TIM S.p.A. (TIIAY) 20-F 16 Apr 19 2018 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2018shares
Document and entity information [abstract]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	TI
Entity Registrant Name	TIM S.p.A.
Entity Central Index Key	0000948642
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	No
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	15,203,122,583

Consolidated Statements of Fina

Consolidated Statements of Financial Position - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Intangible assets
Goodwill	€ 26,769	€ 29,462
Intangible assets with a finite useful life	8,889	7,192
Intangible assets and goodwill	35,658	36,654
Tangible assets
Property, plant and equipment owned	14,251	14,216
Assets held under finance leases	1,895	2,331
Tangible assets	16,146	16,547
Other non-current assets
Investments in associates and joint ventures accounted for using the equity method	16	17
Other investments	49	51
Non-current financial assets	1,594	1,768
Miscellaneous receivables and other non-current assets	2,291	2,422
Deferred tax assets	1,136	993
Other non current assets	5,086	5,251
TOTAL NON-CURRENT ASSETS (A)	56,890	58,452
CURRENT ASSETS
Inventories	389	290
Trade and miscellaneous receivables and other current assets	4,706	4,959
Current income tax receivables	251	77
Current financial assets
Securities other than investments, financial receivables and other current financial assets	1,466	1,430
Cash and cash equivalents	1,917	3,575
Current financial assets	3,383	5,005
Current assets sub-total	8,729	10,331
Discontinued operations /Non-current assets held for sale
of a financial nature	0	0
of a non-financial nature	0	0
TOTAL CURRENT ASSETS (B)	8,729	10,331
TOTAL ASSETS	65,619	68,783
Equity
Share capital issued	11,677	11,677
Less: treasury shares	(90)	(90)
Share capital	11,587	11,587
Additional paid-in capital	2,094	2,094
Other reserves and retained earnings (accumulated losses), including profit (loss) for the year	5,847	7,876
Equity attributable to owners of the Parent	19,528	21,557
Non-controlling interests	2,219	2,226
TOTAL EQUITY (A)	21,747	23,783
Non-current liabilities
Non-current financial liabilities	25,059	28,108
Employee benefits	1,567	1,736
Deferred tax liabilities	192	265
Provisions	876	825
Miscellaneous payables and other non-current liabilities	3,297	1,678
TOTAL NON-CURRENT LIABILITIES (B)	30,991	32,612
CURRENT LIABILITIES
Current financial liabilities	5,913	4,756
Trade and miscellaneous payables and other current liabilities	6,901	7,520
Current income tax payables	67	112
Current liabilities sub-total	12,881	12,388
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0	0
of a financial nature	0	0
of a non-financial nature	0	0
TOTAL CURRENT LIABILITIES (C)	12,881	12,388
TOTAL LIABILITIES (D=B+C)	43,872	45,000
TOTAL EQUITY AND LIABILITIES (A+D)	€ 65,619	€ 68,783

Separate Consolidated Income St

Separate Consolidated Income Statements - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Profit or loss [abstract]
Revenues	€ 18,940	€ 19,828	€ 19,025
Other income	341	523	311
Total operating revenues and other income	19,281	20,351	19,336
Acquisition of goods and services	(8,186)	(8,388)	(7,793)
Employee benefits expenses	(3,105)	(3,626)	(3,106)
Other operating expenses	(1,259)	(1,208)	(1,083)
Change in inventories	102	35	9
Internally generated assets	570	626	639
Depreciation and amortization	(4,255)	(4,473)	(4,291)
Gains (losses) on disposals of non-current assets	(1)	11	14
Impairment reversals (losses) on non-current assets	(2,586)	(37)	(3)
Operating profit (loss)	561	3,291	3,722
Share of profits (losses) of associates and joint ventures accounted for using the equity method	(1)	(1)	(23)
Other income (expenses) from investments	11	(18)	7
Finance income	1,056	1,808	2,543
Finance expenses	(2,404)	(3,303)	(3,450)
Profit (loss) before tax from continuing operations	(777)	1,777	2,799
Income tax expense	(375)	(490)	(880)
Profit (loss) from continuing operations	(1,152)	1,287	1,919
Profit (loss) from Discontinued operations/Non-current assets held for sale			47
Profit (loss) for the year	(1,152)	1,287	1,966
Attributable to:
Owners of the Parent	(1,411)	1,121	1,808
Non-controlling interests	259	166	158
Profit (loss) for the year	€ (1,152)	€ 1,287	€ 1,966
Basic Earnings Per Share (EPS)
Ordinary Share	€ (0.07)	€ 0.05	€ 0.08
Savings Share	(0.07)	0.06	0.09
From continuing operations attributable to Owners of the Parent
Ordinary Share	(0.07)	0.05	0.08
Savings Share	(0.07)	0.06	0.09
Diluted Earnings Per Share (EPS)
Ordinary Share	(0.06)	0.05	0.08
Savings Share	(0.06)	0.06	0.09
From continuing operations attributable to Owners of the Parent
Ordinary Share	(0.06)	0.05	0.08
Savings Share	€ (0.06)	€ 0.06	€ 0.09

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of comprehensive income [abstract]
Profit (loss) for the year	€ (1,152)	€ 1,287	€ 1,966
Financial assets measured at fair value through other comprehensive income:
Profit (loss) from fair value adjustments	(5)
Income tax effect	0	0	0
Financial assets measured at fair value through other comprehensive income	(5)
Remeasurements of employee defined benefit plans (IAS19):
Actuarial gains (losses)	19	10	(33)
Income tax effect	(5)	(1)	7
Re-measurements of employees defined benefit plans, net of tax	14	9	(26)
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method:
Profit (loss)	0	0	0
Income tax effect	0	0	0
Share of other comprehensive income of associates	0	0	0
Total other components that will not be reclassified subsequently to Separate Consolidated Income Statement	9	9	(26)
Financial assets measured at fair value through other comprehensive income:
Profit (loss) from fair value adjustments	(14)	63	46
Loss (profit) transferred to Separate Consolidated Income Statement	(4)	(62)	(37)
Income tax effect	2	2	(2)
Financial assets measured at fair value through other comprehensive income	(16)	3	7
Hedging instruments:
Profit (loss) from fair value adjustments	362	(854)	(312)
Loss (profit) transferred to Separate Consolidated Income Statement	(336)	826	(80)
Income tax effect	(7)	(3)	90
Hedging instruments, net of tax	19	(31)	(302)
Exchange differences on translating foreign operations:
Profit (loss) on translating foreign operations	(554)	(830)	852
Loss (profit) on translating foreign operations transferred to Separate Consolidated Income Statement		19	304
Income tax effect	0	0	0
Exchange differences on translating foreign operations, net of tax	(554)	(811)	1,156
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method:
Loss (profit) transferred to Separate Consolidated Income Statement	0	0	0
Income tax effect	0	0	0
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method, net of tax	0	0	0
Total other components that will be reclassified subsequently to Separate Consolidated Income Statement	(551)	(839)	861
Total other components of the Consolidated Statement of Comprehensive Income	(542)	(830)	835
Total comprehensive income (loss) for the year	(1,694)	457	2,801
Attributable to:
Owners of the Parent	(1,784)	527	2,534
Non-controlling interests	90	(70)	267
Total comprehensive income (loss) for the year	€ (1,694)	€ 457	€ 2,801

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - EUR (€) € in Millions	Total	IFRS 9 and IFRS 15 [member]	Share capital [member]	Additional paid-in capital [member]	Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member]	Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member]IFRS 9 and IFRS 15 [member]	Reserve for hedging instruments [member]	Reserve for exchange differences on translating foreign operations [member]	Reserve for remeasurements of employee defined benefit plans (IAS 19) [member]	Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method [member]	Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year [member]	Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year [member]IFRS 9 and IFRS 15 [member]	Equity attributable to owners of the parent [member]	Equity attributable to owners of the parent [member]IFRS 9 and IFRS 15 [member]	Non-controlling interests [member]	Non-controlling interests [member]IFRS 9 and IFRS 15 [member]	Reserve for available-for-sale financial assets [member]
Beginning Balance at Dec. 31, 2015	€ 21,249		€ 10,650	€ 1,731			€ (249)	€ (1,413)	€ (87)		€ 6,890		€ 17,554		€ 3,695		€ 32
Dividends approved	(204)										(166)		(166)		(38)
Total comprehensive income (loss) for the period	2,801						(302)	1,047	(26)		1,808		2,534		267		7
Disposal of the Sofora-Telecom Argentina group	(1,582)														(1,582)
Conversion of the Guaranteed Subordinated Mandatory Convertible Bonds due 2016	1,300		937	363									1,300
Grant of equity instruments	1										1		1
Other changes	(12)										(16)		(16)		4
Ending balance at Dec. 31, 2016	23,553		11,587	2,094			(551)	(366)	(113)	€ (113)	8,517		21,207		2,346		39
Dividends approved	(230)										(166)		(166)		(64)
Total comprehensive income (loss) for the period	457						(31)	(575)		9	1,121		527		(70)		3
Grant of equity instruments	(6)										(6)		(6)
Other changes	9							(14)			9		(5)		14
Ending balance (Adjustment [member]) at Dec. 31, 2017	23,695		11,587	2,094	€ 51		(582)	(955)	(104)		9,383		21,474		2,221
Ending balance at Dec. 31, 2017	23,783		11,587	2,094	42		(582)	(955)	(104)	€ (104)	9,475		21,557		2,226		€ 42
Adoption of IFRS 15 and IFRS 9		€ (88)				€ 9						€ (92)		€ (83)		€ (5)
Dividends approved	(281)										(166)		(166)		(115)
Total comprehensive income (loss) for the period	(1,694)				(21)		19	(385)	14		(1,411)		(1,784)		90
Grant of equity instruments	2										2		2
Other changes	25										2		2		23
Ending balance at Dec. 31, 2018	€ 21,747		€ 11,587	€ 2,094	€ 30		€ (563)	€ (1,340)	€ (90)		€ 7,810		€ 19,528		€ 2,219

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Profit (loss) from continuing operations	€ (1,152)	€ 1,287	€ 1,919
Adjustments for:
Depreciation and amortization	4,255	4,473	4,291
Impairment losses (reversals) on non-current assets (including investments)	2,589	50	6
Net change in deferred tax assets and liabilities	(195)	(147)	38
Losses (gains) realized on disposals of non-current assets (including investments)	1	(11)	(15)
Share of losses (profits) of associates and joint ventures accounted for using the equity method	1	1	23
Change in provisions for employee benefits	(208)	437	(131)
Change in inventories	(99)	(30)	(10)
Change in trade receivables and net amounts due from customers on construction contracts	(49)	379	(310)
Change in trade payables	(163)	(605)	229
Net change in current income tax receivables/payables	(210)	(515)	581
Net change in miscellaneous receivables/payables and other assets/liabilities	(178)	80	(915)
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES (A)	4,592	5,399	5,706
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of intangible assets	(3,647)	(2,292)	(1,641)
Purchase of tangible assets	(2,831)	(3,477)	(3,467)
Total purchase of intangible and tangible assets on an accrual basis	(6,478)	(5,769)	(5,108)
Change in amounts due for purchases of intangible and tangible assets	1,947	455	450
Total purchase of intangible and tangible assets on a cash basis	(4,531)	(5,314)	(4,658)
Capital grants received	108	82
Acquisition of control of companies or other businesses, net of cash acquired			(10)
Acquisitions/disposals of other investments	(3)	(4)	(5)
Change in financial receivables and other financial assets (excluding hedging and non-hedging derivatives under financial assets)	96	466	175
Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of			492
Proceeds from sale/repayments of intangible, tangible and other non-current assets	16	30	42
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES (B)	(4,314)	(4,740)	(3,964)
CASH FLOWS FROM FINANCING ACTIVITIES:
Change in current financial liabilities and other	394	(1,188)	(437)
Proceeds from non-current financial liabilities (including current portion)	2,546	2,630	3,561
Repayments of non-current financial liabilities (including current portion)	(4,426)	(3,426)	(4,164)
Changes in hedging and non-hedging derivatives	(110)	997
Share capital proceeds/reimbursements (including subsidiaries)	22	16	4
Dividends paid	(256)	(235)	(227)
Changes in ownership interests in consolidated subsidiaries		(4)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES (C)	(1,830)	(1,210)	(1,263)
CASH FLOWS FROM (USED IN) DISCONTINUED OPERATIONS/NON-CURRENT ASSETS HELD FOR SALE (D)			(45)
AGGREGATE CASH FLOWS (E=A+B+C+D)	(1,552)	(551)	434
Cash and cash equivalents beginning balance	3,246	3,952	3,216
Net foreign exchange differences on net cash and cash equivalents (G)	(63)	(155)	302
Cash and cash equivalents ending balance	1,631	3,246	3,952
Income taxes (paid) received	(739)	(1,100)	(218)
Interest expense paid	(1,978)	(2,899)	(2,306)
Interest income received	871	1,636	934
Dividends received	2	1	8
Cash and cash equivalents-from continuing operations	3,575	3,964	3,559
Bank overdrafts repayable on demand-from continuing operations	(329)	(12)	(441)
Cash and cash equivalents-from Discontinued operations/Non-current assets held for sale			98
Bank overdrafts repayable on demand-from Discontinued operations/Non-current assets held for sale	0	0	0
Cash and cash equivalents beginning balance	3,246	3,952	3,216
Cash and cash equivalents-from continuing operations	1,917	3,575	3,964
Bank overdrafts repayable on demand-from continuing operations	(286)	(329)	(12)
Bank overdrafts repayable on demand-from Discontinued operations/Non-current assets held for sale	0	0	0
Cash and cash equivalents ending balance	€ 1,631	€ 3,246	€ 3,952

Form, Content and Other General

Form, Content and Other General Information	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Form, Content and Other General Information	NOTE 1—FORM, CONTENT AND OTHER GENERAL INFORMATION Form and content Telecom Italia S.p.A. (the “Parent”), also known in short as “TIM S.p.A.”, and its subsidiaries form the “TIM Group” or the “Group”. TIM is a joint-stock company (S.p.A.) organized under the laws of the Republic of Italy. The registered offices of the Parent, TIM, are located in Milan, Italy at Via Gaetano Negri 1. The duration of TIM S.p.A., as stated in the company’s bylaws, extends until December 31, 2100. On May 16, 2018, the Board of Directors of TIM S.p.A. acknowledged that the grounds for considering Vivendi the entity exercising direction and coordination powers over TIM no longer applied. Subsequently, on June 25, 2018, the Board of Directors approved amendments to the internal procedure governing transactions with related parties, and updated the relative related party boundary to reflect the new situation, whereby Vivendi no longer qualifies as the de facto controlling entity over TIM. The TIM Group operates mainly in Europe, the Mediterranean Basin and South America. The Group is engaged principally in the communications sector and, particularly, the fixed and mobile national and international telecommunications sector. The TIM Group Consolidated Financial Statements at December 31, 2018 have been prepared on a going concern basis (further details are provided in the Note “Accounting Policies”) and in accordance with the International Financial Reporting Standards issued by the International Accounting Standards Board (designated as “ IFRS Furthermore, during 2018, the Group applied accounting policies consistent with those applied for the previous year, except for the new accounting standards adopted as of January 1, 2018, the impact of which is illustrated in the section “Adoption of the new IFRS 9 and IFRS 15 standards”, to which readers are referred for more details. The consolidated financial statements have been prepared under the historical cost convention except for financial assets measured at fair value through other comprehensive income, financial assets measured at fair value through profit or loss and derivative financial instruments which have been measured at fair value. The carrying amounts of hedged assets and liabilities have been adjusted to reflect the changes in fair value of the hedged risks (fair value hedge). In accordance with IAS 1 (Presentation of Financial Statements) comparative information included in the consolidated financial statements is, unless otherwise indicated, that of the preceding two years. The TIM Group consolidated financial statements as at December 31, 2018 are expressed in euro (rounded to the nearest million unless otherwise indicated). Publication of the TIM Group consolidated financial statements for the year ended December 31, 2018 was approved by resolution of the Board of Directors’ meeting held on February 21, 2019. Financial statement formats The financial statement formats adopted are consistent with those indicated in IAS 1. In particular: · the consolidated statements of financial position have been prepared by classifying assets and liabilities according to the “current and non-current” · the separate consolidated income statements have been prepared by classifying operating expenses by nature of expense as this form of presentation is considered more appropriate and representative of the specific business of the Group, conforms to internal reporting and is in line with the TIM Group’s industrial sector; · the Consolidated statements of comprehensive income include the profit or loss for the year as shown in the separate consolidated income statements and all other non-owner · the Consolidated statements of cash flows have been prepared by presenting cash flows from operating activities according to the “indirect method”, as permitted by IAS 7 (Statement of Cash Flows). Furthermore, according to IAS 1 (paragraphs 97 and 98), certain expense and income items that are material in terms of nature and amount are separately disclosed in the notes to the separate consolidated income statement. Specifically, such items include: income/expenses arising from the disposal of property, plant and equipment, business segments and investments; expenses stemming from company reorganization and streamlining processes and projects, also in connection with corporate transactions (mergers, spin-offs, etc.); expenses resulting from litigation and regulatory fines and related liabilities; other provisions and related reversals; costs for the settlement of disputes; items related to corrections and re-alignments Segment Reporting An operating segment is a component of an entity: · that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same entity); · whose operating results are regularly reviewed by the entity’s chief operating decision maker to make decisions about resources (for the TIM Group, the Board of Directors of the Parent) to be allocated to the segment and assess its performance; and · for which discrete financial information is available. In particular, the operating segments of the TIM Group are organized according to geographic location (Domestic and Brazil) for the telecommunications business. The Sofora-Telecom Argentina group, which was sold on March 8, 2016, has been recognized under Discontinued operations. The term “operating segment” is considered synonymous with “Business Unit”. The operating segments of the TIM Group are as follows: · Domestic · Brazil · Other Operations

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Accounting Policies	NOTE 2—ACCOUNTING POLICIES Going concern The consolidated financial statements for 2018 have been prepared on a going concern basis as there is the reasonable expectation that TIM will continue its operational activities in the foreseeable future (and in any event with a time horizon of at least twelve months). In particular, the following factors have been taken into consideration: · the main risks and uncertainties (that are for the most part of an external nature) to which the Group and the various activities of the TIM Group are exposed: · changes in the general macroeconomic situation in the Italian, European and Brazilian markets, as well as the volatility of financial markets in the Eurozone also as a result of the “Brexit” referendum in the United Kingdom; · variations in business conditions, also related to competition; · changes to laws and regulations (price and rate variations); · outcomes of legal disputes and proceedings with regulatory authorities, competitors and other parties; · financial risks (interest rate and/or exchange rate trends, changes in the Group’s credit rating by rating agencies); · the optimal mix between risk capital and debt capital as well as the policy for the remuneration of risk capital, as described in the paragraph “Share capital information” under the Note “Equity”; · the policy for financial risk management (market risk, credit risk and liquidity risk), as described in the Note “Financial risk management”. Based on these factors, the Management believes that, at the present time, there are no elements of uncertainty regarding the Group’s ability to continue as a going concern. Principles of consolidation The consolidated financial statements include the financial statements of all subsidiaries from the date control over such subsidiaries commences until the date that control ceases. The date of all the subsidiaries’ financial statements coincides with that of the Parent TIM. Control exists when the Parent TIM S.p.A. has all the following: · power over the investee, which includes the ability to direct the relevant activities of the investee, i.e. the activities that significantly affect the investee’s returns; · exposure, or rights, to variable returns from its involvement with the investee; · the ability to use its power over the investee to affect the amount of the investor’s returns. TIM assesses whether it controls an investee if facts and circumstances indicate that there are changes in one or more of the three control elements. In the preparation of the consolidated financial statements, assets, liabilities, revenues and expenses of the consolidated companies are consolidated on a line-by-line non-controlling Under IFRS 10 (Consolidated financial statements), the total comprehensive loss (including the profit or loss for the year) is attributed to the owners of the parent and to the non-controlling non-controlling All intragroup balances and transactions and any gains and losses arising from intragroup transactions are eliminated in consolidation. The carrying amount of the investment in each subsidiary is eliminated against the corresponding share of equity in each subsidiary, after adjustment, if any, to fair value at the acquisition date of control. At that date, goodwill is recorded as an intangible asset, as described below, whereas any gain from a bargain purchase or negative goodwill is recognized in the separate consolidated income statements. Assets and liabilities of foreign consolidated subsidiaries expressed in currencies other than euro are translated using the exchange rates in effect at the statement of financial position date (the current method); income and expenses are translated at the average exchange rates for the year. Exchange differences resulting from the application of this method are classified as equity until the entire disposal of the investment or upon loss of control of the foreign subsidiary. Upon partial disposal, without losing control, the proportionate share of the cumulative amount of exchange differences related to the disposed interest is recognized in non-controlling Goodwill and fair value adjustments arising from the allocation of the purchase price of a foreign entity are recorded in the relevant foreign currency and are translated using the year-end Under IFRS 10, changes in a parent’s ownership interest in a subsidiary that do not result in a loss or acquisition of control are accounted for as equity transactions. In such circumstances the carrying amounts of the controlling and non-controlling non-controlling Under IFRS 10, the parent company in case of loss of control of a subsidiary: derecognizes: · the assets (including any goodwill) and the liabilities; · the carrying amount of any non-controlling recognizes: · the fair value of the consideration received, if any, from the transaction; · any investment retained in the former subsidiary at its fair value at the date when control is lost; · any gain or loss, resulting from the transaction, in the separate consolidated income statements; · the reclassification to the separate consolidated income statements, of the amounts previously recognized in other comprehensive income in relation to the subsidiary. In the consolidated financial statements, investments in associates and joint ventures are accounted for using the equity method, as provided, respectively, by IAS 28 (Investments in Associates and Joint Ventures) and IFRS 11 (Joint Arrangements). Associates are enterprises in which the Group holds at least 20% of the voting rights or exercises significant influence, but no control or joint control over the financial and operating policies. A joint venture is a joint arrangement whereby the parties that have joint control of the arrangement have rights to the net assets of the arrangement. Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Associates and joint ventures are included in the consolidated financial statements from the date that significant influence or joint control commences until the date such significant influence or joint control ceases. Under the equity method, on initial recognition the investment in an associate or a joint venture is recognized at cost, and the carrying amount is increased or decreased to recognize the investor’s share of the profit or loss of the investee after the date of acquisition. The investor’s share of the investee’s profit or loss is recognized in the investor’s income statements. Dividends received from an investee reduce the carrying amount of the investment. Adjustments to the carrying amount may also be necessary for changes in the investee’s other comprehensive income (i.e. those arising from foreign exchange translation differences). The investor’s share of those changes is recognized in the investor’s other comprehensive income. If an investor’s share of losses of an associate or a joint venture equals or exceeds its interest in the associate or joint venture, the investor discontinues recognizing its share of further losses. After the investor’s interest is reduced to zero, additional losses are provided for, and a liability is recognized, only to the extent that the investor has incurred legal or constructive obligations or made payments on behalf of the associate or joint venture. If the associate or joint venture subsequently reports profits, the investor resumes recognizing its share of those profits only after its share of the profits equals the share of losses not recognized. Gains and losses resulting from “upstream” and “downstream” transactions between an investor (including its consolidated subsidiaries) and its associate or joint venture are recognized in the investor’s financial statements only to the extent of unrelated investors’ interests in the associate or joint venture. Gains and losses arising from transactions with associates or joint ventures are eliminated to the extent of the Group’s interest in those entities. Intangible assets Goodwill Under IFRS 3 ( Business Combinations a) the aggregate of: · the consideration transferred (measured in accordance with IFRS 3; it is generally recognized on the basis of the acquisition date fair value); · the amount of any non-controlling non-controlling · in a business combination achieved in stages, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree; b) the acquisition date fair value of the identifiable assets acquired net of the identifiable liabilities assumed measured at the acquisition date of control. IFRS 3 requires, inter alia · incidental costs incurred in connection with a business combination are charged to the separate consolidated income statement; · in a business combination achieved in stages, the acquirer shall remeasure its previously held equity interest in the acquiree at its fair value at the acquisition date of control and recognize the resulting gain or loss, if any, in the separate consolidated income statement. Goodwill is classified in the statement of financial position as an intangible asset with an indefinite useful life. Goodwill initially recorded is subsequently reduced only for impairment losses. Further details are provided in the accounting policy Impairment of tangible and intangible assets—Goodwill, reported below. In case of loss of control of a subsidiary, the relative amount of goodwill is taken into account in calculating the gain or loss on disposal. Development costs Costs incurred internally for the development of new products and services represent either intangible assets (mainly costs for software development) or tangible assets. These costs are capitalized only when all the following conditions are satisfied: i) the cost attributable to the development phase of the asset can be measured reliably, ii) there is the intention, the availability of financial resources and the technical ability to complete the asset and make it available for use or sale and iii) it can be demonstrated that the asset will be able to generate future economic benefits. Capitalized development costs comprise only expenditures that can be attributed directly to the development process for new products and services. Capitalized development costs are amortized systematically over the estimated product or service life so that the amortization method reflects the way which the asset’s future economic benefits are expected to be consumed by the entity. Other intangible assets with a finite useful life Other purchased or internally-generated intangible assets with a finite useful life are recognized as assets, in accordance with IAS 38 (Intangible Assets), where it is probable that the use of the asset will generate future economic benefits and where the cost of the asset can be measured reliably. Such assets are recorded at purchase or production cost and amortized on a straight-line basis over their estimated useful lives; the amortization rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized prospectively in the separate consolidated income statements. Tangible assets Property, plant and equipment owned Property, plant and equipment owned is stated at acquisition or production cost. Subsequent expenditures are capitalized only if they increase the future economic benefits embodied in the related item of property, plant and equipment. All other expenditures are expensed as incurred. Cost also includes the expected costs of dismantling the asset and restoring the site if a legal or constructive obligation exists. The corresponding liability is recognized at its present value as a provision in the statement of financial position. These capitalized costs are depreciated and charged to the separate consolidated income statements over the useful life of the related tangible assets. The recalculation of estimates for dismantling costs, discount rates and the dates in which such costs are expected to be incurred is reviewed annually, at each financial year-end. Depreciation of property, plant and equipment owned is calculated on a straight-line basis over the estimated useful life of the assets. The depreciation rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized prospectively in the separate consolidated income statements. Land, including land pertaining to buildings, is not depreciated. Assets held under finance leases Assets held under finance leases, in which substantially all the risks and rewards of ownership are transferred to the Group, are initially recognized as assets of the Group at fair value or, if lower, at the present value of the minimum lease payments, including bargain purchase options. The corresponding liability due to the lessor is included in the statement of financial position under financial liabilities. Lease payments are apportioned between interest (recognized in the separate consolidated income statements) and principal (recognized as a deduction from liabilities). This split is determined so as to produce a constant periodic rate of interest on the remaining balance of the liability. Furthermore, gains realized on sale and leaseback transactions that are recorded under finance lease contracts are deferred over the lease term. The depreciation policy for depreciable assets held under finance leases is consistent with that for depreciable assets that are owned. If there is no reasonable certainty over the acquisition of the ownership of the asset at the end of the lease period, assets held under finance leases are depreciated over the shorter of the lease term and their useful lives. Leases where the lessor retains substantially all the risks and rewards of ownership of the assets are accounted for as operating leases. Operating lease rentals are charged to the separate consolidated income statements on a straight-line basis over the lease term. When a lease includes both land and buildings, an entity assesses the classification of each element as a finance or an operating lease separately. Capitalized borrowing costs Under IAS 23 ( Borrowing Costs Capitalized borrowing costs are recorded in the separate consolidated income statements and deducted directly from the “finance expense” line item to which they relate. Impairment of intangible and tangible assets Goodwill Goodwill is tested for impairment at least annually or more frequently whenever events or changes in circumstances indicate that goodwill may be impaired, as set forth in IAS 36 ( Impairment of Assets The test is generally conducted at the end of every year so the date of testing is the year-end To test for impairment, goodwill is allocated at the date of acquisition to each cash-generating unit or group of cash-generating units which is expected to benefit from the acquisition. If the carrying amount of the cash-generating unit (or group of cash-generating units) exceeds the recoverable amount, an impairment loss is recognized in the separate consolidated income statements. The impairment loss is first recognized as a deduction of the carrying amount of goodwill allocated to the cash-generating unit (or group of cash-generating units) and then only applied to the other assets of the cash-generating unit in proportion to their carrying amount, up to the recoverable amount of the assets with a finite useful life. The recoverable amount of a cash-generating unit (or group of cash-generating units) to which goodwill is allocated is the higher of fair value less costs to sell and its value in use. In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. The future cash flows are those arising from an explicit time horizon between three and five years as well as those extrapolated to estimate the terminal value. The long-term growth rate used to estimate the terminal value of the cash-generating unit (or group of cash-generating units) is assumed not to be higher than the average long-term growth rate of the segment, country or market in which the cash-generating unit (or group of cash-generating units) operates. The value in use of cash-generating units denominated in foreign currency is estimated in the local currency by discounting cash flows to present value on the basis of an appropriate rate for that currency. The present value obtained is translated to euro at the spot rate on the date of the impairment test (in the case of the TIM Group, the date of the financial statements). Future cash flows are estimated by referring to the current operating conditions of the cash generating unit (or group of cash-generating units) and, therefore, do not include either benefits originating from future restructuring for which the entity is not yet committed, or future investments for the improvement or optimization of the cash-generating unit. For the purpose of calculating impairment, the carrying amount of the cash-generating unit is established based on the same criteria used to determine the recoverable amount of the cash generating unit, excluding surplus assets (that is, financial assets, deferred tax assets and net non-current non-controlling After conducting the goodwill impairment test for the cash-generating unit (or groups of cash-generating units), a second level of impairment testing is carried out which includes the corporate assets which do not generate positive cash flows and which cannot be allocated by a reasonable and consistent criterion to the single units. At this second level, the total recoverable amount of all cash-generating units (or groups of cash-generating units) is compared to the carrying amount of all cash-generating units (or groups of cash-generating units), including also those cash-generating units to which no goodwill was allocated, and the corporate assets. Intangible and tangible assets with a finite useful life At every closing date, the Group assesses whether there are any indications of impairment of intangible and tangible assets with a finite useful life. Both internal and external sources of information are used for this purpose. Internal sources include obsolescence or physical damage, and significant changes in the use of the asset and the economic performance of the asset compared to estimated performance. External sources include the market value of the asset, changes in technology, markets or laws, trend in market interest rates and the cost of capital used to evaluate investments, and an excess of the carrying amount of the net assets of the Group over market capitalization. When indicators of impairment exist, the carrying amount of the assets is reduced to the recoverable amount. The recoverable amount of an asset is the higher of fair value less costs to sell and its value in use. In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. Where it is not possible to estimate the recoverable amount of an individual asset, the Group estimates the recoverable amount of the cash-generating unit to which the asset belongs. Impairment losses are recognized in the separate consolidated income statements. When the conditions that gave rise to an impairment loss no longer exist, the carrying amount of the asset or cash-generating unit is increased to the revised estimate of its recoverable amount, up to the carrying amount that would have been recorded had no impairment loss been recognized. The reversal of an impairment loss is recognized as income in the separate consolidated income statements. Financial instruments Business models for managing the financial assets Under IAS 39, financial assets were classified and measured according to the categories established by IAS 39 (Loans and Receivables, Financial assets Held-to-Maturity, Under IFRS 9, the business models for financial assets (other than trade receivables due from customers) have been defined on the basis of how the financial instruments are managed and their cash flows used; this is done to ensure an adequate level of financial flexibility and to best manage, in terms of risks and returns, the financial resources immediately available through the treasuries of Group companies and in accordance with the strategies set forth by the Parent TIM. As required by IFRS 9, the business models adopted by the TIM Group are: · Hold to Collect · Hold to Collect and Sell · Hold to Sell The comparison between the new category determined in compliance with IFRS 9 with the original category determined in compliance with IAS 39 as of January 1, 2018 is provided elsewhere herein in Note— Supplementary disclosures on financial instruments. Other investments Other investments (other than those in subsidiaries, associates and joint ventures) are classified as non-current Other investments (other than those in subsidiaries, associates and joint ventures) are classified in “financial assets measured at fair value through consolidated profit or loss” (FVTPL) as current assets. At initial recognition of each investment, IFRS 9 provides the irrevocable election of recognizing such investments as “financial assets measured at fair value through other consolidated comprehensive income” (FVTOCI) as non-current Other investments classified as “financial assets measured at fair value through other comprehensive income” are measured at fair value; changes in the fair value of these investments are recognized in a specific equity reserve under the other components of the statements of comprehensive income ( Reserve for financial assets measured at fair value through other comprehensive income Changes in the value of other investments classified as “financial assets at fair value through profit or loss” are recognized directly in the separate consolidated income statements. Securities other than investments Securities other than investments included among non-current Securities other than investments classified as current assets are those that, by decision of the directors, are intended to be kept in the Group’s portfolio for a period of not more than 12 months, and are classified: · as “financial assets measured at amortized cost” (AC) when held to maturity (originally more than 3 months but less than 12 months, or, with an original maturity of more than 12 months but the remaining maturity at the date of purchase is more than 3 months but less than 12 months); · as “financial assets measured at fair value through other consolidated comprehensive income” (FVTOCI) when held in the scope of a business model whose objective is to sell the financial asset and/or collect the contractual flows. The “Reserve for financial assets measured at fair value through other consolidated comprehensive income” is reversed to the separate consolidated income statements when the financial asset is disposed of or impaired; · as “financial assets measured at fair value through consolidated profit or loss” (FVTPL) in the other cases. Cash and cash equivalents Cash and cash equivalents are recorded, according to their nature, at nominal value or amortized cost. Cash equivalents are short-term and highly liquid investments that are readily convertible to known amounts of cash, subject to an insignificant risk of change in value and their original maturity or the remaining maturity at the date of purchase does not exceed 3 months. Impairment of financial assets At every closing date, assessments are made as to whether there is any objective evidence that a financial asset or a group of financial assets may be impaired. Under IAS 39. if any of the above-mentioned evidence exists, an impairment loss is recognized in the separate consolidated income statement for financial assets measured at cost or amortized cost. Under IFRS 9, the impairment of financial assets is based on the expected credit loss model. In particular: · impairment on trade receivables and on contract assets is carried out using the simplified approach that involves estimating the loss expected over the life of the receivable at the time of initial recognition and on subsequent measurements. For each customer segment, the estimate is principally made by calculating the average expected uncollectibility, based on historical and statistical indicators, possibly adjusted using forward-looking elements. For some categories of receivables characterized by specific risk elements, specific measurements are made on individual credit positions; · impairment on financial assets other than trade receivables is carried out on the basis of a general model which estimates expected credit losses over the following 12 months, or over the residual life of the asset in the event of a substantial increase in its credit risk. Derivatives As allowed by IFRS 9, the TIM Group decided to continue to apply the hedge accounting provisions contained in IAS 39, instead of those of IFRS 9. Derivatives are used by the TIM Group to manage its exposure to exchange rate and interest rate risks and to diversify the parameters of debt so that costs and volatility can be reduced to within pre-established In accordance with IAS 39, derivative financial instruments qualify for hedge accounting only when: · at the inception of the hedge, the hedging relationship is formally designated and documented; · the hedge is expected to be highly effective; · its effectiveness can be reliably measured; · the hedge is highly effective throughout the financial reporting periods for which it is designated. All derivative financial instruments are measured at fair value in accordance with IAS 39. When derivative financial instruments qualify for hedge accounting, the following accounting treatment applies: · Fair value hedge—Where a derivative financial instrument is designated as a hedge of the exposure to changes in fair value of an asset or liability due to a particular risk, the gain or loss from re-measuring · Cash flow hedge—Where a derivative financial instrument is designated as a hedge of the exposure to variability in cash flows of an asset or liability or a highly probable expected transaction, the effective portion of any gain or loss on the derivative financial instrument is recognized directly in a specific equity reserve (Reserve for cash flow hedges). The cumulative gain or loss is removed from equity and recognized in the separate consolidated income statements at the same time the hedged transaction affects the separate consolidated income statements. The gain or loss associated with the ineffective portion of a hedge is recognized in the separate consolidated income statements immediately. If the hedged transaction is no longer probable, the cumulative gains or losses included in the equity reserve are immediately recognized in the separate consolidated income statements. If hedge accounting is not appropriate, gains or losses arising from the measurement at fair value of derivative financial instruments are directly recognized in the separate consolidated income statements. Financial liabilities Financial liabilities comprise financial debt, including advances received on the assignment of accounts receivable, and other financial liabilities such as derivatives and finance lease obligations. In accordance with IFRS 9, they also include trade and other payables. Financial liabilities other than derivatives are initially recognized at fair value and subsequently measured at amortized cost. Financial liabilities hedged by derivative instruments designed to manage exposure to changes in fair value of the liabilities (fair value hedge derivatives) are measured at fair value in accordance with the hedge accounting principles of IAS 39. Gains and losses arising from re-measurement re-measurement Financial liabilities hedged by derivative instruments designed to manage exposure to variability in cash flows (cash flow hedge derivatives) are measured at amortized cost in accordance with the hedge accounting principles of IAS 39. Sales of receivables The TIM Group carries out sales of receivables under factoring contracts. These sales, in the majority of cases, are characterized by the transfer of substantially all the risks and rewards of ownership of the receivables to third parties, meeting the requirements of IFRS 9 for derecognition. Specificservicing contracts, through which the buyer confers a mandate to TIM S.p.A. for the collection and management of the receivables, leave the current Company/customer relationship unaffected. Amounts due from customers on construction contracts Amounts due from customers on construction contracts, regardless of the duration of the contracts, are recognized in accordance with the percentage of completion method and classified under current assets. Inventories Inventories are measured at the lower of purchase and production cost and estimated realizable value; cost is determined on a weighted average basis. Provision is made for obsolete and slow-moving inventories based on their expected future use and estimated realizable value. Non-current Non-current non-current An operating asset sold ( Discontinued Operations · represents a major line of business or geographical area of operations; · is part of a single coordinated plan to dispose of a separate major line of business or geographical area of operations; or · is a subsidiary acquired exclusively with a view to resale. The results arising from Discontinued Operations—whether disposed of or classified as held for sale—are shown separately in the separate consolidated income statements, net of tax effects. The corresponding values for the previous periods, where present, are reclassified and reported separately in the separate consolidated income statements, net of tax effects, for comparative purposes. Non-current Any subsequent impairment losses are recognized as a direct adjustment to the non-current An entity shall recognize a gain for any subsequent increase in fair value less costs to sell of an asset, but not in excess of the cumulative impairment loss that has been recognized. As required by IFRS 5 ( Non-current non-current The finance expenses and other expenses attributable to the liabilities of a disposal group classified as held for sale shall continue to be recognized. Employee benefits Provision for employee severance indemnity Employee severance indemnity, mandatory for Italian companies pursuant to Article 2120 of the Italian Civil Code, is deferred compensation and is based on the employees’ years of service and the compensation earned by the employee during the service period. Under IAS 19 ( Employee Benefits The remeasurements of actuarial gains and losses are recognized in other components of comprehensive income. Service cost of Italian companies that employ less than 50 employees, as well as interest expenses related to the “time value” component of the actuarial calculations (the latter classified as Finance expenses), are recognized in the separate consolidated income statements. Starting from January 1, 2007, Italian Law introduced for employees the choice to direct their accruing indemnity either to supplementary pension funds or leave the indemnity as an obligation of the Company. Companies that employ at least 50 employees should transfer the employee severance indemnity to the “Treasury fund” managed by INPS, the Italian Social Security Institute. Consequently, the Group’s obligation to INPS and the contributions to supplementary pension funds take the form, under IAS 19, of a “Defined contribution plan”. Equity compensation plans The companies of the Group provide additional benefits to certain managers of the Group through equity compensation plans (for example stock options and long-term incentive plans). The above plans are recognized in accordance with IFRS 2 ( Share-Based Payment In accordance with IFRS 2, such plans represent a component of the beneficiaries’ compensation. Therefore, for the plans that provide for compensation in equity instruments, the cost is represented by the fair value of such instruments at the grant date, and is recognized in the separate consolidated income statements in “Employee benefits expenses” over the period between the gra

Scope of Consolidation

Scope of Consolidation	12 Months Ended
	Dec. 31, 2018
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Scope of Consolidation	NOTE 3—SCOPE OF CONSOLIDATION Investments in consolidated subsidiaries Composition of the Group TIM holds a majority of the voting rights in all the subsidiaries included in the scope of consolidation. A complete list of consolidated subsidiaries is provided in the Note “List of companies of the TIM Group”. Scope of consolidation The changes in the scope of consolidation at December 31, 2018 compared to December 31, 2017 are listed below. These changes did not have any significant impacts on the Consolidated Financial Statements of the TIM Group at December 31, 2018. Subsidiaries exiting/merged into the scope of consolidation: Company Business Unit Month Exit: OLIVETTI ESPAÑA S.A. (in liquidation) Liquidated Other Operations December 2018 Merger: TI SPARKLE MED S.p.A. Merged into TI Sparkle S.p.A. Domestic April 2018 TIM CELULAR S.A. Merged into TIM S.A. Brazil October 2018 The breakdown by number of subsidiaries and associates of the TIM Group is as follows: As of December 31, 2018 Companies Italy Outside Italy Total subsidiaries consolidated line-by-line 21 42 63 joint ventures accounted for using the equity method 1 — 1 associates accounted for using the equity method 16 — 16 Total companies 38 42 80 As of December 31, 2017 Companies Italy Outside Italy Total subsidiaries consolidated line-by-line 22 44 66 joint ventures accounted for using the equity method 1 — 1 associates accounted for using the equity method 19 — 19 Total companies 42 44 86 Further details are provided in the Note “List of companies of the TIM Group”. Subsidiaries with significant non-controlling At December 31, 2018, the TIM Group held investments in subsidiaries, with significant non-controlling The figures provided below, stated before the netting and elimination of intragroup accounts, have been prepared in accordance with IFRS and reflect adjustments made at the acquisition date to align the assets and liabilities acquired to their fair value. TIM Brasil group—Brazil Business Unit Non-controlling Statement of Financial Position Data—TIM Brasil group Year ended December 31, 2018 2017 (millions of euros) Non-current 6,257 6,819 Current assets 1,387 1,929 Total Assets 7,644 8,748 Non-current 959 1,703 Current liabilities 1,678 1,852 Total Liabilities 2,637 3,555 Equity 5,007 5,193 of which, Non-controlling 1,518 1,556 Income Statement Data—TIM Brasil group Year ended December 31, 2018 2017 2016 (millions of euros) Revenues 3,943 4,502 4,047 Profit (loss) for the year 586 340 194 of which, Non-controlling 200 114 65 Financial Data—TIM Brasil group In 2018, aggregate cash flows generated a negative amount of 512 million euros, essentially due to a negative exchange rate effect of 67 million euros, without which cash flow would have generated a negative 445 million euros. In 2017, aggregate cash flows generated a negative amount of 744 million euros, essentially due to a negative exchange rate effect of 146 million euros, without which cash flow would have generated a negative 598 million euros. Lastly, again with reference to the Tim Brasil group and in line with the information given in the Report on Operations—Main risks and uncertainties Section, the main risk factors that could, even significantly, restrict the operations of the Tim Brasil group are listed below: · strategic risks (risks related to macroeconomic and political factors, as well as risks associated with foreign exchange restrictions and competition); · operational risks (risks related to business continuity and development of the fixed and mobile networks, as well as risks associated with litigation and disputes); · financial risks; · Regulatory and Compliance risks.

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2018
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Business Combinations	NOTE 4—BUSINESS COMBINATIONS YEAR 2018 In 2018, there were no material business combination transactions, as defined in IFRS 3. YEAR 2017 In 2017, there were no material business combination transactions, as defined in IFRS 3. YEAR 2016 In 2016, there were no material business combination transactions, as defined in IFRS 3.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2018
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Goodwill	NOTE 5—GOODWILL Goodwill shows the following breakdown and changes during 2017 and 2018: As of Reclassification Increase Decrease Impairments Exchange As of (millions of euros) Domestic 28,489 28,489 Core Domestic 28,077 28,077 International Wholesale 412 412 Brazil 1,123 (150 ) 973 Other operations — — Total 29,612 — — — — (150 ) 29,462 As of Reclassification Increase Decrease Impairments Exchange As of (millions of euros) Domestic 28,489 (2,590 ) 25,899 Core Domestic 28,077 (2,450 ) 25,627 International Wholesale 412 (140 ) 272 Brazil 973 (103 ) 870 Other operations — — Total 29,462 — — — (2,590 ) (103 ) 26,769 In accordance with IAS 36, goodwill is not subject to amortization, but is tested for impairment annually when preparing the company’s consolidated financial statements. In 2018 Goodwill fell by 2,693 million euros, from 29,462 million euros at the end of 2017 to 26,769 million euros at December 31, 2018, due to the 2,590 million-euro impairment loss recognized during the year related to the Domestic Business Unit, as well as the goodwill allocated for the exchange difference of the Brazil Cash Generating Unit. The Domestic Business Unit is made up of the Core Domestic CGU and the International Wholesale CGU. In relation to the Core Domestic CGU, as of September 30, 2018, events and circumstances of an exogenous and endogenous nature had occurred which led the company to carry out impairment testing on the CGU, this led to an impairment loss recognized for an amount of 2,000 million euros. The impairment testing carried out during the preparation of the 2018 financial statements led to an additional impairment loss of 450 million euros of the goodwill attributed to the Core Domestic CGU—as well as an impairment loss of 140 million euros of goodwill attributed to the International Wholesale CGU. The impairment testing did not reveal any impairment in relation to the Brazil CGU. The gross carrying amounts of goodwill and the relative accumulated impairment losses from January 1, 2004 (date of allocation to the Cash Generating Units—CGUs) to December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2018 As of December 31, 2017 Gross Accumulated Net Gross Accumulated Net (millions of euros) Domestic 42,457 (16,558 ) 25,899 42,457 (13,968 ) 28,489 Core Domestic 42,045 (16,418 ) 25,627 42,045 (13,968 ) 28,077 International Wholesale 412 (140 ) 272 412 — 412 Brazil 1,077 (207 ) 870 1,204 (231 ) 973 Other operations — — — — — — Total 43,534 (16,765 ) 26,769 43,661 (14,199 ) 29,462 The figures for the Brazil CGU are stated in euros, converted at the spot exchange rate at the closing date of the financial statements; the carrying amount of goodwill for the CGU corresponds to 3,854 million reais. The impairment test was conducted at two levels; at the first level, the recoverable amount was estimated for the assets assigned to the individual cash-generating units to which goodwill is allocated; at the second level, the assets of the Group as a whole were considered. With regard to the first level test, goodwill was allocated to the following cash-generating units (or groups of units): Segment Cash Generating Units (or groups of units) Domestic Core Domestic International Wholesale Brazil Brazil At December 31, 2018 the “recoverable amount” of the CGUs was equal to the greater of the “fair value less disposal costs” and the “value in use”. The value used to determine the recoverable value were the value in use for Core Domestic, fair value for International Wholesale and Brazil. In particular, for Brazil, the fair value was determined on the basis of the market capitalization at the end of the period; for International Wholesale, the fair value was determined on the basis of direct market multiples relating to a sample of comparable companies, taking into account the average values of the Enterprise Value/EBITDA ratio, applied to the forecast 2019 EBITDA of the CGU (level 3 fair value in the reference standard’s hierarchy, corresponding to “prices calculated using inputs that are not based on observable market data”). The values used were expressed in the local currency, and hence in EUR for the Core Domestic and International Wholesale CGUs and BRL for the Brazil CGU. For the Brazil CGU, the recoverable amount of the assets was denominated in the functional currency and subsequently translated at the spot exchange rate at the reporting date. For the Core Domestic CGU value in use estimates were made, in accordance with IAS 36 and with valuation principles and best practices, based on the expected cash flows in different scenarios. The various expected cash flows were then summarized into an average normal cash flow, determined with the aid of Experts (expert appraisers and industry experts) and based on the data from the 2019-2021 Industrial Plan approved by the Board of Directors. The expected average cash flows were measured for the three years of the 2019-2021 Industrial Plan, plus an additional two years on the basis of extrapolated data, for which future cash flows were explicitly forecast for a period of five years (2019-2023). The extrapolation of data for 2022-2023 enabled market and competition trends that will become manifest beyond the time horizon of the Industrial Plan to be captured. For the estimate of the terminal value, the sustainable long-term cash flow was assumed to be the extrapolation of the estimated cash flow at 2023, adjusted as necessary to take into consideration a suitable level of long-term capital expenditure. Furthermore, with specific reference to the valuation of the incremental share of the value deriving from 5G license use and therefore from the development of new and innovative business areas, an evaluation model has been adopted that takes into account the net incremental flows for a period of defined time which only concerns the duration of the license. This approach is consistent with the need in the value used to capture on one hand the outgoing flows deriving from the payment of the license (2019-2022) and the supporting capex, and on the other to capture the positive net flows from the incremental business component of the license acquisition that will develop over a broad period of time and over the 5 years of explicit forecast. The Industrial Plan (2019-2021) incorporates some valuations of potential risk factors and the actions adopted to mitigate them. In defining the average normal flows for the purposes of impairment testing, management, with the help of the experts, identified additional risk factors, modifying the amount and/or distribution over time of future cash flows, giving a greater weighting to external data available. The cost of capital used to discount the future cash flows for estimating the value in use of the Core Domestic: · was estimated using the Capital Asset Pricing Model (CAPM), which is one of the generally accepted application criteria referred to in IAS 36; · reflects the current market estimates of the time value of money and the specific risks of the groups of assets; it includes appropriate yield premiums for country risk and the risk associated with the depreciation of the currency of denomination of the cash flows; · was calculated using comparative market parameters to estimate the “Beta coefficient” and the weighting coefficient of the equity and debt capital components. Details are provided below for the Core domestic CGU: · of the weighted average cost of capital (WACC rate) used to discount the future cash flows, and the equivalent rate before tax; · of the growth rate used to estimate the residual value after the explicit forecast period (the G-Rate), · of the implicit capitalization rates resulting from the difference between the cost of capital, after tax, and the G-Rate. Principal parameters for the estimates of value in use Core % WACC 6.60 WACC before tax 8.91 Growth rate beyond the explicit period (g) 0.50 Capitalization rate net of tax (WACC -g 6.10 Capitalization rate before taxes (WACC -g 8.41 Capex/Revenues, % perpetual 20.15 The growth rate of the terminal value “g” of the Core Domestic CGU was estimated taking into account the expected outlook during the explicit forecast period and are consistent with the range of growth rates applied by analysts who monitor TIM shares. In estimating the level of capital expenditure required to sustain the perpetual generation of cash flows after the explicit forecast period, according to the phase of capital expenditure, competitive positioning and the technological infrastructure operated were taken into account. In addition to average normal cash flows, to take into account the market operator’s perspective, sensitivity analyses were conducted on the risk factors identified with the experts to determine the value in use of the Core Domestic CGU. The difference between the recoverable amounts and the net carrying amounts of the CGUs considered totaled: Core International Brazil (millions of euros) Difference between recoverable amounts and net carrying amounts (2,450 ) (140 ) 1,246 Therefore, in the light of the factors above, the impairment loss of the goodwill allocated to the Core Domestic Cash Generating Unit amounted to 2,450 million euros and the impairment loss of the goodwill allocated to the International Wholesale Cash Generating Unit is equal 140 million euros. The Brazil Cash Generating Unit on the other hand showed a positive difference of 1.2 billion euros. As the recoverable amount, determined on the basis of fair value, was higher than the carrying amounts, the value in use was not calculated for the Brazil CGU. In relation to the Brazil CGU, the sensitivity analyzes showed that the change necessary to make the recoverable value equal to the carrying amount was equal to -25% With regard to value testing at overall Group level, the sum of the recoverable amounts of all the CGUs was compared against the carrying amount of the net operating assets in the consolidated financial statements. No impairment losses were recorded at this additional level of impairment testing.

Intangible Assets with a Finite

Intangible Assets with a Finite Useful Life	12 Months Ended
	Dec. 31, 2018
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Intangible Assets with a Finite Useful Life	NOTE 6—INTANGIBLE ASSETS WITH A FINITE USEFUL LIFE Intangible assets with a finite useful life increased by 1,697 million euros compared to December 31, 2017. The breakdown and movements are as follows: As of Addition Amortization Impairment Disposals Exchange Capitalized Other As of (millions of euros) Industrial patents and intellectual property rights 2,458 771 (1,263 ) (147 ) 374 2,193 Concessions, licenses, trademarks and similar rights 2,854 140 (396 ) (96 ) 248 2,750 Other intangible assets 109 157 (134 ) (5 ) 7 134 Work in progress and advance payments 1,530 1,224 (30 ) (143 ) 73 (539 ) 2,115 Total 6,951 2,292 (1,793 ) (30 ) — (391 ) 73 90 7,192 As of IFRS 15 Addition Amortization Impairment Disposals Exchange Capitalized Other As of (millions of euros) Industrial patents and intellectual property rights 2,193 703 (1,171 ) (98 ) 468 2,095 Concessions, licenses, trademarks and similar rights 2,750 103 (422 ) (64 ) 894 3,261 Other intangible assets 134 (110 ) 11 (6 ) (1 ) 5 33 Work in progress and advance payments 2,115 2,830 4 (1 ) (88 ) 37 (1,397 ) 3,500 Total 7,192 (110 ) 3,647 (1,599 ) 4 (1 ) (251 ) 37 (30 ) 8,889 Additions in 2018, equal to 3,647 million euros (increased by 1,355 million euros compared to 2017) and particularly were affected by the impacts caused by the acquisitions of user rights for mobile telephone frequencies in Italy (2,399 million euros), recognized in Works in Progress. Additions in 2018 also included 248 million euros of internally generated assets (272 million euros in 2017); Further details are provided in the Note “Internally generated assets”. Industrial patents and intellectual property rights at December 31, 2018 consisted mainly of application software purchased outright and user licenses acquired, amortized over a period between 2 and 5 years. They mainly related to TIM S.p.A. (1,256 million euros) and to the Brazil Business Unit (794 million euros). Concessions, licenses, trademarks and similar rights at December 31, 2018 mainly related to: · the remaining cost of telephone licenses and similar rights (2,040 million euros for TIM S.p.A., 615 million euros for the Brazil Business Unit); they increased by 502 million euros, mainly following the reclassification of the Parent to the extension of the user rights to the 900 and 1800 MHz band (GSM license) acquired in 2017 with starting date July 1, 2018 and the reclassification from the Brazil Business Unit of the right to use the 700 MHz frequencies that came into operation; · Indefeasible Rights of Use—IRU (412 million euros), mainly relating to companies of the Telecom Italia Sparkle group—International Wholesale (270 million euros), the Parent (110 million euros) and the Brazil Business Unit (32 million euros); · TV frequencies of the company Persidera in the Core Domestic segment (104 million euros). The user licenses for the frequencies used for digital terrestrial transmission will expire in 2032. The residual amount of telephone licenses and similar rights (2,655 million euros) and their useful lives are detailed below: Type of license Residual amount at Useful life Maturity date Amortization TIM S.p.A.: UMTS 403 18 12/31/2021 134 UMTS 2100 MHz 22 12 12/31/2021 7 WiMax 4 15 05/31/2023 1 LTE 1800 MHz 94 18 12/31/2029 9 LTE 800 MHz 661 17 12/31/2029 60 LTE 2600 MHz 73 17 12/31/2029 7 1452-1492 MHz band 181 14 12/31/2029 16 GSM (extension) — 3 06/30/2018 17 900 and 1800 MHz band 602 12 12/31/2029 27 Tim Brasil group: GSM and 3G (UMTS) 129 15 From 2023 to 2031 41 4G (LTE—700 MHz) 486 15 2030 36 Other intangible assets fell mainly due to the introduction of IFRS 15, under which mobile customer acquisition costs (Subscriber Acquisition Costs—SACs), relating to contracts with minimum term clauses, are no longer capitalized and amortized. Instead they are reclassified as deferred contract costs and then subsequently recognized in the income statement over the term of the contract in the item “Acquisition of goods and services”, at December 31, 2017 SACs amounted to 110 million euros. The figure for other intangible assets at December 31, 2018 mainly consisted of surface rights acquired by INWIT. Work in progress and advance payments mainly included: · the investment by the Parent in the acquisition of user rights to frequencies in the 694-790 26.5-27.5 · the amount of the user rights for the 700 MHz frequencies, equal to 461 million euros, acquired in 2014 by the Tim Brasil group for a total of 2.9 billion reais (equal to around 1 billion euros), but not yet in operation. In 2018, part of the user rights, amounting to 261 million euros, came into operation and was consequently reclassified under the item “Concessions, licenses, trademarks and similar rights”. The finance expenses directly attributable to the purchase of these rights have been capitalized since 2014. In 2018, the capitalized finance expenses totaled 37 million euros, at an annual interest rate of 8.37%; expenses capitalized were deducted directly in the income statement from “Finance expenses”. In 2018, the Parent also carried out an adjustment of 4 million euros for Construction contracts previously subject to impairment. Work in progress and advance payments at December 31, 2017 included the payment of 630 million euros for the extension of the user rights to the 900 and 1800 MHz band from July 1, 2018 until December 31, 2029. As a result, in 2018 the value of the license extension was reclassified under the line item “Concessions, licenses, trademarks and similar rights”. Depreciation and impairment losses have been recorded in the income statement as components of Operating Profit. The gross carrying amount, accumulated impairment losses and accumulated amortization at December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2017 Gross Accumulated Accumulated Net carrying (millions of euros) Industrial patents and intellectual property rights 12,266 (7 ) (10,066 ) 2,193 Concessions, licenses, trademarks and similar rights 7,044 (273 ) (4,021 ) 2,750 Other intangible assets 522 (388 ) 134 Work in progress and advance payments 2,145 (30 ) 2,115 Total intangible assets with a finite useful life 21,977 (310 ) (14,475 ) 7,192 As of December 31, 2018 Gross Accumulated Accumulated Net carrying (millions of euros) Industrial patents and intellectual property rights 10,832 (8,737 ) 2,095 Concessions, licenses, trademarks and similar rights 7,839 (277 ) (4,301 ) 3,261 Other intangible assets 241 (208 ) 33 Work in progress and advance payments 3,526 (26 ) 3,500 Total intangible assets with a finite useful life 22,438 (303 ) (13,246 ) 8,889 Impairment losses on “Concessions, licenses, trademarks and similar rights”, mainly relating to reporting periods prior to 2004, refer to the Indefeasible Rights of Use (IRU) for the transmission capacity and cables for international connections acquired by the Telecom Italia Sparkle group. With regard to the gross carrying amounts of intangible assets with a finite life, in 2018 disposals were made by the Parent for a total amount of 2,195 million euros, mainly in relation to obsolete releases of software systems of the Parent; consequently, where present, the accumulated impairment losses and the accumulated depreciation related to them were also canceled.

Tangible Assets (Owned and Unde

Tangible Assets (Owned and Under Finance Leases)	12 Months Ended
	Dec. 31, 2018
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Tangible Assets (Owned and Under Finance Leases)	NOTE 7—TANGIBLE ASSETS (OWNED AND UNDER FINANCE LEASES) Property, plant and equipment owned Property, plant and equipment owned increased by 35 million euros compared to December 31, 2017. The breakdown and movements are as follows: As of Addition Depreciation Impairment Disposals Exchange Other As of (millions of euros) Land 203 6 (2 ) 6 213 Buildings (civil and industrial) 509 10 (39 ) (3 ) 11 488 Plant and equipment 11,709 2,601 (2,286 ) (8 ) (8 ) (332 ) 373 12,049 Manufacturing and distribution equipment 38 12 (16 ) 2 36 Other 391 88 (159 ) (2 ) (18 ) 76 376 Construction in progress and advance payments 1,097 541 1 (1 ) (41 ) (543 ) 1,054 Total 13,947 3,258 (2,500 ) (7 ) (11 ) (396 ) (75 ) 14,216 As of Addition Depreciation Impairment Disposals Exchange Other As of (millions of euros) Land 213 6 (1 ) 32 250 Buildings (civil and industrial) 488 79 (36 ) (2 ) 59 588 Plant and equipment 12,049 2,013 (2,229 ) (7 ) (217 ) 487 12,096 Manufacturing and distribution equipment 36 8 (14 ) 1 31 Other 376 94 (162 ) (2 ) (13 ) 65 358 Construction in progress and advance payments 1,054 488 (4 ) (21 ) (589 ) 928 Total 14,216 2,688 (2,441 ) — (13 ) (254 ) 55 14,251 Land built-up Buildings Plant and equipment Manufacturing and distribution equipment The item Other Construction in progress and advance payments Capital expenditures in 2018 decreased by 570 million euros compared to the previous year, driven mainly by a greater selectivity in capex dedicated to network infrastructure, and include 322 million euros of internally generated assets (354 million euros in 2017); Further details are provided in the Note “Internally generated assets”. Depreciation, impairment losses and reversals have been recorded in the income statement as components of Operating Profit. Depreciation for the years 2018 and 2017 was calculated on a straight-line basis over the estimated useful lives of the assets according to the following minimum and maximum rates: Buildings (civil and industrial) 2%-5.55% Plant and equipment 3%-50% Manufacturing and distribution equipment 20% Other 10%-50% The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2017 Gross Accumulated Accumulated Net (millions of euros) Land 218 (5 ) 213 Buildings (civil and industrial) 1,717 — (1,229 ) 488 Plant and equipment 68,964 (62 ) (56,853 ) 12,049 Manufacturing and distribution equipment 310 (1 ) (273 ) 36 Other 3,988 (2 ) (3,610 ) 376 Construction in progress and advance payments 1,054 — 1,054 Total 76,251 (70 ) (61,965 ) 14,216 As of December 31, 2018 Gross Accumulated Accumulated Net (millions of euros) Land 253 (3 ) 250 Buildings (civil and industrial) 1,862 — (1,274 ) 588 Plant and equipment 70,525 (62 ) (58,367 ) 12,096 Manufacturing and distribution equipment 318 (1 ) (286 ) 31 Other 3,885 (2 ) (3,525 ) 358 Construction in progress and advance payments 928 — — 928 Total 77,771 (68 ) (63,452 ) 14,251 Impairment losses on “Plant and equipment”, mainly relating to years prior to 2004, refer to the Telecom Italia Sparkle group. With respect to the gross carrying amounts of tangible assets, in 2018 TIM S.p.A. carried out disposals for a total amount of 431 million euros, mainly in relation to fully depreciated assets. Disposals mainly involved plant and equipment for around 288 million euros, consequently, where present, the accumulated impairment losses and the accumulated depreciation related to them were also canceled. Assets held under finance leases Assets held under finance lease decreased by 436 million euros compared to December 31, 2017. The breakdown and movements are as follows: As of Addition Increases Depreciation Exchange Other As of (millions of euros) Land 16 16 Buildings (civil and industrial) 1,835 47 2 (130 ) 14 1,768 Plant and equipment 365 72 14 (21 ) (43 ) (34 ) 353 Other 125 52 (29 ) (1 ) (9 ) 138 Construction in progress and advance payments 72 32 (48 ) 56 Total 2,413 151 68 (180 ) (44 ) (77 ) 2,331 As of Addition Increases Depreciation Exchange Other As of (millions of euros) Land 16 16 Buildings (civil and industrial) 1,768 32 12 (159 ) — (288 ) 1,365 Plant and equipment 353 9 6 (18 ) (26 ) (22 ) 302 Other 138 52 (38 ) (1 ) (3 ) 148 Construction in progress and advance payments 56 32 (24 ) 64 Total 2,331 73 70 (215 ) (27 ) (337 ) 1,895 Additions in 2018 referred to TIM S.p.A. and consisted mainly of the acquisition of IRU transmission capacity, in view of the payment at the beginning of the contract, and improvements and incremental expenses incurred for movable and immovable third-party assets used on the basis of finance lease agreements. The increases in finance leasing contracts refers mainly to TIM S.p.A. (58 million euros) and only on a residual basis to the Brazil Business Unit. Buildings Plant and equipment Other Depreciation and impairment losses have been recorded in the income statement as components of Operating Profit. The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2017 Gross Accumulated Accumulated Net (millions of euros) Land 16 16 Buildings (civil and industrial) 3,391 (27 ) (1,596 ) 1,768 Plant and equipment 397 (44 ) 353 Other 200 (62 ) 138 Construction in progress and advance payments 56 56 Total 4,060 (27 ) (1,702 ) 2,331 As of December 31, 2018 Gross Accumulated Accumulated Net (millions of euros) Land 16 16 Buildings (civil and industrial) 2,792 (13 ) (1,414 ) 1,365 Plant and equipment 370 (68 ) 302 Other 243 (95 ) 148 Construction in progress and advance payments 64 64 Total 3,485 (13 ) (1,577 ) 1,895 At December 31, 2018 and 2017, finance lease payments due in future years and their present value are as follows: As of December 31, 2018 2017 Minimum Present value of Minimum lease Present value of (millions of euros) Within 1 year 227 210 271 234 From 2 to 5 years 993 782 1,031 691 Beyond 5 years 1,745 831 2,878 1,391 Total 2,965 1,823 4,180 2,316 As of December 31, 2018 2017 (millions of euros) Future net minimum lease payments 2,965 4,180 Interest portion (1,142 ) (1,864 ) Present value of lease payments 1,823 2,316 Financial lease liabilities 1,948 2,430 Financial receivables for lease contracts (124 ) (114 ) Total net finance lease liabilities 1,823 2,316 At December 31, 2018, adjustments to lease payments based on the ISTAT price index totaled 13 million euros (13 million euros at December 31, 2017) and related to TIM S.p.A.

Investments

Investments	12 Months Ended
	Dec. 31, 2018
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Investments	NOTE 8—INVESTMENTS INVESTMENTS IN ASSOCIATES AND JOINT VENTURES ACCOUNTED FOR USING THE EQUITY METHOD Investments in associates and joint ventures accounted for using the equity method As of December 31, 2018 2017 (millions of euros) Tiglio I 5 7 NordCom 5 5 W.A.Y. 3 3 Others 3 2 Total Associates 16 17 Alfiere — — Total Joint Ventures — — Total Investments accounted for using the equity method 16 17 The changes in this item are broken down as follows: As of Investments Disposals and Valuation As of (millions of euros) Tiglio I S.r.l 8 (1 ) 7 NordCom 5 5 W.A.Y. 3 3 Others 2 2 Total Associates 18 — — (1 ) 17 Alfiere — — Total Joint Ventures — — — — — Total Investments accounted for using the equity method 18 — — (1 ) 17 As of Investments Disposals and Valuation As of (millions of euros) Tiglio I S.r.l 7 (2 ) 5 NordCom 5 5 W.A.Y. 3 3 Others 2 1 3 Total Associates 17 — — (1 ) 16 Alfiere — — — — — Total Joint Ventures — — — — — Total Investments accounted for using the equity method 17 — — (1 ) 16 The item joint ventures related to the investment in Alfiere S.p.A., a company that owns several buildings in the EUR area in Rome, whose value was essentially written down to nil in 2016 . The financial statements as of December 31, 2018 of Alfiere S.p.A. are currently not available. The main aggregated figures prepared with regard to the portion attributable to the TIM Group show amounts referring to the financial statements for 2017. 2017 Alfiere S.p.A. Telecom Italia (millions of euros) Non-current 156.6 78.3 Current assets 3.5 1.8 Total assets 160.1 80.1 Non-current 142.9 71.5 Current liabilities 13.6 6.8 Total liabilities 156.5 78.3 Equity 3.6 1.8 Total Equity and liabilities 160.1 80.1 Profit (loss) for the year (5.7 ) (2.9 ) The list of investments accounted for using the equity method is presented in the Note “List of companies of the TIM Group”. Investments in associates accounted for using the equity method of the TIM Group are not material either individually or in aggregate form. INVESTMENTS IN STRUCTURED ENTITIES TIM Group does not hold investments in structured entities. OTHER INVESTMENTS Other investments refer to the following: As of Investments Disposals and Measurement Other As of (millions of euros) Assicurazioni Generali 2 1 3 Fin.Priv. 17 3 20 Northgate Comms Tech Innovations Partners L.P. (ex Northgate Telecom Innovations Partners L.P.) 14 3 17 Others 13 (2 ) 11 Total 46 3 — 4 (2 ) 51 As of IFRS 9 Investments Disposals and Measurement Other As of (millions of euros) Assicurazioni Generali 3 3 Fin.Priv. 20 (4 ) 16 Northgate Comms Tech Innovations Partners L.P. (ex Northgate Telecom Innovations Partners L.P.) 17 (3 ) 2 16 Others 11 3 1 (1 ) 14 Total 51 — 3 (1 ) (4 ) — 49 As permitted by IFRS 9, TIM now measures all Other Investments at fair value through other comprehensive income (FVTOCI). Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

Financial Assets (Non-Current a

Financial Assets (Non-Current and Current)	12 Months Ended
	Dec. 31, 2018
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Financial Assets (Non-Current and Current)	NOTE 9—FINANCIAL ASSETS (NON-CURRENT Financial assets (non-current As of 2018 2017 (millions of Non-current Securities, financial receivables and other non-current Securities other than investments — — Receivables from employees 43 47 Financial receivables for lease contracts 54 69 Hedging derivatives relating to hedged items classified as non-current 1,490 1,495 Non-hedging 7 7 Other financial receivables — 150 Total non-current (A) 1,594 1,768 Current financial assets Securities other than investments Held for trading — — Held to maturity — — Available for sale — 993 Measured at amortized cost (AC) — — Measured at fair value through other comprehensive income (FVTOCI) 945 — Measured at fair value through profit or loss (FVPTL) 181 — 1,126 993 Financial receivables and other current financial assets: Liquid assets with banks, financial institutions and post offices (with a maturity greater than 3 months) — 100 Receivables from employees 14 16 Financial receivables for lease contracts 70 45 Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature 242 260 Non-hedging 12 15 Other short-term financial receivables 2 1 340 437 Cash and cash equivalents 1,917 3,575 Total current financial assets (B) 3,383 5,005 Financial assets relating to Discontinued operations/Non-current (C) — — Total non-current (A+B+C) 4,977 6,773 Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”. Financial receivables for lease contracts refer to: · Teleleasing lease contracts entered into directly with customers in previous years and for which TIM is the guarantor; · the portion of rental contracts, with the rendering of accessory services; · finance leases on user rights and equipment. Hedging derivatives relating to hedged items classified as non-current mark-to-market The Non-hedging mark-to-market non-hedging Further details are provided in the Note “Derivatives”. Securities other than investments included in current financial assets relate to: · 945 million euros of listed securities, of which 558 million euros of Italian treasury bonds purchased by TIM S.p.A. (252 million euros), Telecom Italia Finance S.A. (296 million euros) and INWIT S.p.A. (10 million euros), as well as 387 million euros of bonds purchased by Telecom Italia Finance S.A. with different maturities, all with an active market and consequently readily convertible into cash. Under IFRS 9, such securities are classified as financial assets measured at fair value through other comprehensive income (FVTOCI). The purchases of the above government bonds, which, pursuant to Consob Communication no. DEM/11070007 of August 5, 2011, represent investments in “Sovereign debt securities”, have been made in accordance with the Guidelines for the “Management and control of financial risk” adopted by the TIM Group since August 2012, in replacement of the previous policies in force; · 181 million euros of investments in monetary funds by the Brazil Business Unit, which, under IFRS 9, are classified as financial assets measured at fair value through profit or loss (FVTPL). Further details are provided in the Note “Accounting standards”. Cash and cash equivalents fell by 1,658 million euros compared to December 31, 2017. The figure breaks down as follows: As of December 31, 2018 2017 (millions of euros) Liquid assets with banks, financial institutions and post offices 1,694 2,828 Checks, cash and other receivables and deposits for cash flexibility 1 2 Securities other than investments (due within 3 months) 222 745 Total 1,917 3,575 The different technical forms of investing available cash at December 31, 2018 had the following characteristics: · maturities: all deposits have a maximum maturity date of three months; · counterparty risk: deposits have been made with leading high-credit-quality banks and financial institutions with a rating of at least BBB- · Country risk: deposits have been made mainly in major European financial markets. Securities other than investments (due within 3 months) included 221 million euros (744 million euros at December 31, 2017) of Brazilian bank certificates of deposit (Certificado de Depósito Bancário) held by the Brazil Business Unit with premier local banking and financial institutions.

Miscellaneous Receivables and O

Miscellaneous Receivables and Other Non-Current Assets	12 Months Ended
	Dec. 31, 2018
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Miscellaneous Receivables and Other Non-Current Assets	NOTE 10—MISCELLANEOUS RECEIVABLES AND OTHER NON-CURRENT Miscellaneous receivables and other non-current As of December 31, 2018 2017 Of which Of which (millions of euros) Miscellaneous receivables ( non-current) (a) 697 326 704 371 Other non-current Deferred contract costs 1,531 Other cost deferrals 63 Medium/long-term prepaid expenses 1,718 Total other non-current (b) 1,594 1,718 Total (a+b ) 2,291 326 2,422 371 Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”. The impacts caused by the adoption of IFRS 15 are summarized below: As of 2018 Adoption of new accounting As of 2018 IFRS 15 IFRS 15 (millions of euros) Miscellaneous receivables (non-current) (a) 704 704 Other non-current Deferred contract costs — 1,714 (319 ) 1,395 Other cost deferrals — 54 — 54 Medium/long-term prepaid expenses 1,718 (1,718 ) — — Total other non-current (b) 1,718 50 (319 ) 1,449 Total (a+b ) 2,422 50 (319 ) 2,153 For more detailed information on the impacts caused by the adoption of IFRS 15, please refer to the Note “Accounting Standards”. Miscellaneous receivables (non-current) Other non-current · Deferred contract costs totaling 1,531 million euros, relating to the deferral of costs connected with the activation and acquisition of new contracts with customers, classified at December 31, 2017 as Medium/long-term prepaid expenses. Under previous accounting policies, contract costs (incremental costs of obtaining a contract and costs to fulfill a contract) were capitalized or deferred and recognized in the income statement on the basis of the expected duration of the contract and the type of customer. That approach is substantially confirmed under IFRS 15, with the exception of the reclassification of subscriber acquisition costs (SACs) connected to contracts with lock-in Activation costs for telephone services are deferred throughout the expected life of the relationship with the customer, taking also into account the reasonable expectations of cash flows arising from these services. The average expected duration at December 31, 2018 was 3 years for mobile business and 7 years for fixed business. · Other cost deferrals of 63 million euros were attributable mainly to the companies of the Domestic Business Unit. · Medium/long-term prepaid expenses: no longer present at December 31, 2018 as included in the aforementioned items; as at December 31, 2017, they mainly referred to the Domestic Business Unit and the deferral of costs connected with the activation and acquisition of new contracts with customers. The breakdown of the total deferred contract costs (non-current As of December 31, 2018 (millions of euros) Deferred contract cost Costs of obtaining a contract 1,132 Costs to fulfil a contract 1,033 Total 2,165 As of Increase Release to Exchange other changes As of (millions of euros) Costs of obtaining a contract 1,031 473 (367 ) (5 ) 1,132 Costs to fulfil a contract 905 348 (220 ) — 1,033 Total 1,936 821 (587 ) (5 ) 2,165

Income Taxes (Current and Defer

Income Taxes (Current and Deferred)	12 Months Ended
	Dec. 31, 2018
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Income Taxes (Current and Deferred)	NOTE 11—INCOME TAXES (CURRENT AND DEFERRED) Income tax receivables Non-current Specifically, they consisted of: · non-current · current income tax receivables of 251 million euros (77 million euros at December 31, 2017), mainly relating to companies belonging to the Brazil Business Unit (78 million euros) and to the Domestic Business Unit (171 million euros). Deferred tax assets and deferred tax liabilities The net balance of 944 million euros at December 31, 2018 (728 million euros at December 31, 2017) breaks down as follows. As of December 31, 2018 2017 (millions of euros) Deferred tax assets 1,136 993 Deferred tax liabilities (192 ) (265 ) Total 944 728 Deferred tax assets mainly consisted of 917 million euros for the Domestic Business Unit (939 million euros at December 31, 2017) and 177 million euros for the Brazil Business Unit. Compared to December 31, 2017, they rose basically following the recognition of deferred tax assets of around 200 million euros, connected with tax recoverability of prior losses recorded in previous years that became recoverable based on the perspective of profits, of the Brazil Business Unit companies. Deferred tax liabilities mainly consisted of 155 million euros for Telecom Italia Capital (174 million euros at December 31, 2017) and 25 million euros for the Domestic Business Unit (54 million euros at December 31, 2017). Since the presentation of deferred tax assets and liabilities in the financial statements takes into account the offsets by legal entity when applicable, the composition of the gross amounts before offsets is presented below: As of December 31, 2018 2017 (millions of euros) Deferred tax assets 1,592 1,429 Deferred tax liabilities (648 ) (701 ) Total 944 728 The temporary differences which made up this line item at December 31, 2018 and 2017, as well as the movements during 2018 were as follows: As of IFRS 9 IFRS 15 Recognized in Recognized in Change in As of (millions of euros) Deferred tax assets: Tax loss carryforwards 32 181 (8 ) 205 Derivatives 589 (7 ) (9 ) 573 Provision for bad debts 142 27 11 6 186 Provisions 452 (12 ) (8 ) 432 Taxed depreciation and amortization 106 8 114 Other deferred tax assets 108 (23 ) (5 ) 2 82 Total 1,429 27 — 158 (14 ) (8 ) 1,592 Deferred tax liabilities: Derivatives (422 ) (1 ) 2 (421 ) Business combinations—for step-up (131 ) 4 13 (114 ) Deferred gains (2 ) 2 — Accelerated depreciation (14 ) (14 ) Other deferred tax liabilities (132 ) 11 (8 ) 35 (5 ) (99 ) Total (701 ) 11 (8 ) 38 4 8 (648 ) Total net deferred tax assets (liabilities) 728 38 (8 ) 196 (10 ) — 944 The expirations of deferred tax assets and deferred tax liabilities at December 31, 2018 were as follows: Within 1 year Beyond 1 year Total at December 31, (millions of euros) Deferred tax assets 383 1,209 1,592 Deferred tax liabilities (18 ) (630 ) (648 ) Total net deferred tax assets (liabilities) 365 579 944 At December 31, 2018, the TIM Group had unused tax loss carryforwards of 2,163 million euros, mainly relating to the Brazil Business Unit and the company Telecom Italia Finance, with the following expiration dates: Year of expiration (millions of euros) 2019 — 2020 — 2021 — 2022 1 2023 — Expiration after 2023 39 Without expiration 2,123 Total unused tax loss carryforwards 2,163 Unused tax loss carryforwards considered in the calculation of deferred tax assets amounted to 609 million euros at December 31, 2018 (91 million euros at December 31, 2017) and mainly referred to the Brazil Business Unit. Deferred tax assets were recognized as it was considered probable that taxable income will be available in the future against which the tax losses can be utilized. On the other hand, deferred tax assets of 406 million euros (647 million euros at December 31, 2017) were not recognized on 1,554 million euros of tax loss carryforwards since, at the reporting date, their recoverability was not considered probable. At December 31, 2018, deferred tax liabilities were not recognized on approximately 1 billion euros of tax-suspended Current income tax payables Income tax payables amounted to 109 million euros (157 million euros at December 31, 2017). They break down as follows: At 2018 2017 (millions of Income tax payables: Non-current 42 45 Current 67 112 Total 109 157 Specifically, the non-current Income tax expense Income tax expense totaled 375 million euros, dropping by 115 million euros compared to 2017 (490 million euros), mainly because of the recognition of deferred tax assets of the Brazil Business Unit (about 200 million euros) connected with tax recoverability of prior losses recognized in the previous years, becoming recoverable based on the perspective of profits of the Business Unit companies. Income tax expense breaks down as follows: 2018 2017 2016 (millions of euros) Current taxes for the year 547 646 900 Net difference in prior years estimates 24 (6 ) (54 ) Total current taxes 571 640 846 Deferred taxes (196 ) (150 ) 34 Total taxes on continuing operations (A) 375 490 880 Total taxes on Discontinued operations/Non-current (B) — — 48 Total income tax expense for the year (A+B) 375 490 928 The reconciliation between the theoretical tax expense, using the IRES tax rate in force in Italy (24%), and the effective tax expense for the years ended December 31, 2018, 2017 and 2016 is the follows: 2018 2017 2016 (millions of euros) Profit (loss) before tax from continuing operations (777 ) 1,777 2,799 Theoretical income tax from continuing operations (186 ) 426 770 Income tax effect on increases (decreases) in variations: Tax losses of the year not considered recoverable 9 3 17 Tax losses from prior years not recoverable (recoverable) in future years (225 ) (2 ) (1 ) Non-deductible 621 — — Effect of change in IRES tax rate — — 25 Prior years’ IRES 25 (26 ) (38 ) Brazil: different rate compared to theoretical rate in force in Italy 44 34 11 Brazil: incentive on investments in the north-east of the country (34 ) (31 ) (31 ) Other net differences (19 ) (55 ) (26 ) Effective income tax recognized in income statement from continuing operations, excluding IRAP tax 235 349 727 IRAP tax 140 141 153 Total effective income tax recognized in income statement from continuing operations (A ) 375 490 880 Effective income tax recognized in income statement from Discontinued operations/Non-current (B ) — — 48 Total effective income tax recognized in income statements (A+B ) 375 490 928 For the analysis of the tax burden related to the Profit (loss) before tax from continuing operations, the impact of IRAP tax has not been taken into consideration in order to avoid any distorting effect, since that tax only applies to Italian companies and is calculated on a tax base other than pre-tax

Inventories

Inventories	12 Months Ended
	Dec. 31, 2018
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Inventories	NOTE 12—INVENTORIES Inventories increased by 99 million euros compared to December 31, 2017 and consisted of the following: As of December 31, 2018 2017 (millions of euros) Raw materials and supplies 1 1 Work in progress and semi-finished products 1 3 Finished goods 387 286 Total 389 290 The inventories mainly consist of equipment, handsets fixed and mobile telecommunications and relative accessories, as well as office products, special printers and gaming terminals. Inventories mainly consisted of 348 million euros for the Domestic Business Unit (259 million euros at December 31, 2017) and 41 million euros for the Brazil Business Unit (31 million euros at December 31, 2017). Inventories are stated net of a provision for bad debts amounting to 11 million euros (13 million euros at December 31, 2017).

Trade and Miscellaneous Receiva

Trade and Miscellaneous Receivables and Other Current Assets	12 Months Ended
	Dec. 31, 2018
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Trade and Miscellaneous Receivables and Other Current Assets	NOTE 13—TRADE AND MISCELLANEOUS RECEIVABLES AND OTHER CURRENT ASSETS Trade and miscellaneous receivables and other current assets fell by 253 million euros compared to December 31, 2017. The figure breaks down as follows. As of December 31, 2018 2017 Of which Of which (millions of euros) Amounts due on construction contracts (a ) 55 34 Trade receivables Receivables from customers 2,290 2,290 2,528 2,528 Receivables from other telecommunications operators 1,037 1,037 972 972 (b ) 3,327 3,327 3,500 3,500 Miscellaneous receivables (current) Other receivables (c ) 424 125 645 154 Other current assets Activities deriving from contracts (Contract Assets) 46 46 Deferred contract costs 634 Other cost deferrals 220 Trade and miscellaneous prepaid expenses 780 (d ) 900 46 780 — Total 4,706 3,498 4,959 3,654 Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”. The impacts caused by the adoption of IFRS 9 and IFRS 15 are summarized below: As of Adoption of new standards As of IFRS 15 reclassifications IFRS 9 adjustments IFRS 15 adjustments (millions of euros) Amounts due on construction contracts (a) 34 — — — 34 Trade receivables Receivables from customers 2,528 — (141 ) — 2,387 Receivables from other telecommunications operators 972 — (6 ) — 966 (b) 3,500 — (147 ) — 3,353 Miscellaneous receivables (current) Other receivables (c) 645 — — — 645 Other current assets Activities deriving from contracts (Contract Assets) — — — 35 35 Deferred contract costs — 594 — (53 ) 541 Other cost deferrals — 246 — — 246 Trade and miscellaneous prepaid expenses 780 (780 ) — — — (d) 780 60 — (18 ) 822 Total (a+b+c+d) 4,959 60 (147 ) (18 ) 4,854 For more detailed information on the impacts caused by the adoption of IFRS 9 and IFRS 15, please refer to the Note “Accounting Standards”. The analyses of the aging of trade and miscellaneous receivables at December 31, 2018 and 2017 are provided below: Overdue: As of Total Total 0-90 91-180 181-365 More than (millions of euros) Trade and miscellaneous receivables and other current assets 3,498 2,715 783 175 134 158 316 Overdue: As of Total Total 0-90 91-180 181-365 More than (millions of euros) Trade and miscellaneous receivables and other current assets 3,654 2,781 873 300 178 188 207 Overdue receivables fell by 66 million euros compared to December 31, 2017. The main contributors to this decrease are TIM S.p.A. (73 million euros) and Olivetti S.p.A. (14 million euros), while for the Brazil Business Unit there was an increase of 25 million euros, net of a negative exchange rate effect for approximately 54 million euros. Overdue receivables fell by 90 million euros compared to December 31, 2017 of which 62 million euros refer to TIM S.p.A.. The Brazil Business Unit also showed a drop, equal to 3 million euros and net of a negative exchange difference of approximately 15 million euros. The growth of receivables overdue by more than 365 days is mainly attributable to the Parent’s greater receivables with other telecommunications operators. Trade receivables amounted to 3,327 million euros (3,500 million euros at December 31, 2017) and are stated net of the provision for bad debts of 769 million euros (597 million euros at December 31, 2017). They included 39 million euros (43 million euros at December 31, 2017) of medium/long-term receivables, principally in respect of agreements for the sale of Indefeasible Rights of Use (IRU). Trade receivables mainly related to TIM S.p.A. (2,268 million euros) and to the Brazil Business Unit (669 million euros). Movements in the provision for bad debts were as follows: 2018 2017 (millions of euros) At January 1 597 648 Effects of IFRS 9 adoption 147 Provision charges to the income statement 320 242 Utilization and decreases (281 ) (278 ) Exchange differences and other changes (14 ) (15 ) At December 31 769 597 The application of the new standard IFRS 9 (Financial Instruments) resulted in the recognition at January 1, 2018 of 147 million euros of higher write-downs for expected credit losses on trade receivables, due to the introduction of the expected credit loss model as per IFRS 9, replacing the incurred loss model required by IAS 39. Miscellaneous receivables (current) As of December 31, 2018 2017 (millions of euros) Advances to suppliers 24 69 Receivables from employees 11 12 Tax receivables 87 135 Receivables for grants from the government and public entities 91 207 Sundry receivables 211 222 Total 424 645 Tax receivables included, inter alia Receivables for grants from the government and public entities (91 million euros) referred mainly to the Ultra-Broadband-UBB Broadband-BB Sundry receivables mainly included: · receivables for with-recourse assignments to other factoring companies (60 million euros); · receivables from social security and assistance agencies due to TIM S.p.A. (23 million euros); · miscellaneous receivables due to TIM S.p.A. from other licensed TLC operators (42 million euros). Other current assets · Contract assets 24-month · Deferred contract costs Under previous accounting policies, contract costs (incremental costs of obtaining a contract and costs to fulfill a contract) were capitalized or deferred and recognized in the income statement on the basis of the expected duration of the contract and the type of customer. That approach is substantially confirmed under IFRS 15, with the exception of the reclassification of subscriber acquisition costs (SACs) connected to contracts with lock-in For additional details on the deferred contract costs and their movement during the year, please refer to the Note ”Miscellaneous receivables and other non-current · Other cost deferrals · to the Parent, primarily for deferred costs connected with rent payments (59 million euros), building leases (17 million euros), insurance premiums (5 million euros) and maintenance fees (2 million euros); · to INWIT S.p.A. for 24 million euros in advance lease payments; · to the Brazil Business Unit, mainly relating to marketing and insurance premiums for approximately 17 million euros. · Trade and miscellaneous prepaid expenses

Discontinued Operations_Non-cur

Discontinued Operations/Non-current Assets Held for Sale	12 Months Ended
	Dec. 31, 2018
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Discontinued Operations/Non-current Assets Held for Sale	NOTE 14—DISCONTINUED OPERATIONS/NON-CURRENT On March 8, 2016, the TIM Group completed the sale of the remaining interest in Sofora -Telecom Argentina following approval by the Enacom, the Argentinian communications regulatory authority. The total amount from the transaction was over 960 million USD, including: · 550.6 million USD received on March 8, 2016 for the investment in Sofora-Telecom Argentina. The impact on the statement of cash flows (item “Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of”) was 492 million euros; · 50 million USD, also received on March 8, 2016, from other shareholders of Sofora-Telecom Argentina, with respect to ancillary agreements to the transaction; · 329.5 million USD received previously in connection with sales of investments and other associated assets to Fintech, completed between December 2013 and October 2014; and · 30 million USD generated by making technical support services available to Telecom Argentina group companies. — · Below is a summary of the income statement impacts from the Sofora—Telecom Argentina group and its sale. The figures for 2016 have been translated at the average exchange rate for the period January 1 – March 8 (15.7981 pesos per euro), whereas the figures for 2015 have been translated at the annual average exchange rate (10.2689 pesos per euro). Year ended December 31, 2018 2017 1.1-3.8 2016 (millions of euros) Income statement effects from Discontinued operations/Non-current Revenues — — 504 Other income — — 1 Operating expenses — — (372 ) Gains (losses) on disposals of non-current — — — Goodwill and other non-current — — — Operating profit (loss) — — 133 Finance income (expenses) — — (42 ) Profit (loss) before tax from Discontinued operations/Non-current — — 91 Income tax expense — — (32 ) Profit (loss) after tax from Discontinued operations/Non-current (A) — — 59 Other minor income statement effects: Other income/(expenses) connected to sales in previous years — — Other minor entries — — (B) — — — Profit (loss) from Discontinued operations/Non-current (C=A+B) — — 59 Income statement effects on the selling entities: Net gains on disposal — — 307 Transfer to the separate consolidated dated income statement of the Reserve for exchange differences on translating foreign operations — — (304 ) Income tax expense relating to the disposal — — (15 ) (D) — — (12 ) Profit (loss) from Discontinued operations/Non-current (C+D) — — 47 Attributable to: — — Owners of the Parent — — (3 ) Non-controlling — — 50 The earnings per share from Discontinued operations/Non-current Year ended December 31, 2018 2017 1.1-3.8 2016 (Euros) Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-current Ordinary Share — — — Savings Share — — — (*) Basic EPS is equal to Diluted EPS. — · Within the consolidated statements of cash flows the net impacts, expressed in terms of contribution to the consolidation, of the “Discontinued operations/Non-current Year ended December 31, 2018 2017 1.1-3.8 2016 (millions of euros) Discontinued operations/Non-current Cash flows from (used in) operating activities — — 130 Cash flows from (used in) investing activities — — (117 ) Cash flows from (used in) financing activities — — (58 ) Total — — (45 )

Equity

Equity	12 Months Ended
	Dec. 31, 2018
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Equity	NOTE 15—EQUITY Equity consisted of: As of December 31, 2018 2017 (millions of euros) Equity attributable to owners of the Parent 19,528 21,557 Non-controlling 2,219 2,226 Total 21,747 23,783 The composition of the “ Equity attributable to owners of the Parent” As of December 31, 2018 2017 (millions of euros) Share capital 11,587 11,587 Additional paid-in 2,094 2,094 Other reserves and retained earnings (accumulated losses), including profit (loss) for the year(*) 5,847 7,876 Total 19,528 21,557 (*) of which: Reserve for financial assets measured at fair value through other comprehensive income (*) 30 42 Reserve for hedging instruments (563 ) (582 ) Reserve for exchange differences on translating foreign operations (1,340 ) (955 ) Reserve for remeasurements of employee defined benefit plans (IAS 19) (90 ) (104 ) Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method — — Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year 7,810 9,475 (*) At December 31, 2017 the item included the “Reserve for available-for-sale Movements in Share Capital in 2018, amounting to 11,587 million euros, net of treasury shares of 90 million euros, are shown in the tables below: Reconciliation between the number of outstanding shares at December 31, 2015 and December 31, 2016 Shares as of Shares issued for the Shares as of Percentage of (number of shares) Ordinary Shares issued (a) 13,499,911,771 1,703,210,812 15,203,122,583 71.61 % Less: Treasury Shares (b) (163,754,388 ) — (163,754,388 ) Ordinary Shares Outstanding (c) 13,336,157,383 1,703,210,812 15,039,368,195 Savings Shares Issued and Outstanding (d) 6,027,791,699 — 6,027,791,699 28.39 % Total TIM S.p.A. shares issued (a+d) 19,527,703,470 1,703,210,812 21,230,914,282 100.00 % Total TIM S.p.A. shares outstanding (c+d) 19,363,949,082 1,703,210,812 21,067,159,894 Reconciliation between the number of outstanding shares at December 31, 2016 and December 31, 2017 Shares as of Share Shares as of Percentage of (number of shares) Ordinary Shares issued (a) 15,203,122,583 — 15,203,122,583 71.61 % Less: Treasury Shares (b) (163,754,388 ) (163,754,388 ) Ordinary Shares Outstanding (c) 15,039,368,195 — 15,039,368,195 Savings Shares Issued and Outstanding (d) 6,027,791,699 6,027,791,699 28.39 % Total TIM S.p.A. shares issued (a+d) 21,230,914,282 — 21,230,914,282 100.00 % Total TIM S.p.A. shares outstanding (c+d) 21,067,159,894 — 21,067,159,894 Reconciliation between the number of outstanding shares at December 31, 2017 and December 31, 2018 Shares as of Share Shares as of Percentage of (number of shares) Ordinary Shares issued (a) 15,203,122,583 — 15,203,122,583 71.61 % Less: Treasury Shares (b) (163,754,388 ) (163,754,388 ) Ordinary Shares Outstanding (c) 15,039,368,195 — 15,039,368,195 Savings Shares Issued and Outstanding (d) 6,027,791,699 6,027,791,699 28.39 % Total TIM S.p.A. shares issued (a+d) 21,230,914,282 — 21,230,914,282 100.00 % Total TIM S.p.A. shares outstanding (c+d) 21,067,159,894 — 21,067,159,894 Reconciliation between the value of the outstanding shares as of December 31, 2015 and December 31, 2016 Share capital as of Change in share Share capital as of (millions of euros) Ordinary Shares issued (a) 7,425 937 8,362 Less: Treasury Shares (b) (90 ) — (90 ) Ordinary Shares Outstanding (c) 7,335 937 8,272 Savings Shares Issued and Outstanding (d) 3,315 — 3,315 Total TIM S.p.A. share capital issued (a+d) 10,740 937 11,677 Total TIM S.p.A. share capital outstanding (c+d) 10,650 937 11,587 Reconciliation between the value of the outstanding shares as of December 31, 2016 and December 31, 2017 Share capital as of Change in share capital Share capital as of (millions of euros) Ordinary Shares issued (a) 8,362 — 8,362 Less: Treasury Shares (b) (90 ) — (90 ) Ordinary Shares Outstanding (c ) 8,272 — 8,272 Savings Shares Issued and Outstanding (d) 3,315 — 3,315 Total TIM S.p.A. share capital issued (a+d) 11,677 — 11,677 Total TIM S.p.A. share capital outstanding (c+d) 11,587 — 11,587 Reconciliation between the value of the outstanding shares as of December 31, 2017 and December 31, 2018 Share capital as of Change in share capital Share capital as of (millions of euros) Ordinary Shares issued (a) 8,362 — 8,362 Less: Treasury Shares (b) (90 ) — (90 ) Ordinary Shares Outstanding (c ) 8,272 — 8,272 Savings Shares Issued and Outstanding (d) 3,315 — 3,315 Total TIM S.p.A. share capital issued (a+d) 11,677 — 11,677 Total TIM S.p.A. share capital outstanding (c+d) 11,587 — 11,587 The total value of the ordinary treasury shares at December 31, 2018, amounting to 510 million euros, was recorded as follows: the part relating to accounting par value (90 million euros) was recognized as a deduction from share capital issued and the remaining part as a deduction from Other reserves and retained earnings (accumulated losses), including profit (loss) for the year. Share capital information The TIM S.p.A. ordinary and savings shares are listed respectively in Italy (FTSE index) and on the NYSE in the form of American Depositary Shares, each ADS corresponding to 10 shares of ordinary or savings shares, respectively, represented by American Depositary Receipts (ADRs) issued by JPMorgan Chase Bank. In the shareholder resolutions passed to increase share capital against cash payments, the pre-emptive pre-existing The Group sources itself with the capital necessary to fund its requirements for business development and operations; the sources of funds are found in a balanced mix of equity, permanently invested by the shareholders, and debt capital, to guarantee a balanced financial structure and minimize the total cost of capital, with a resulting advantage to all the stakeholders. Debt capital is structured according to different maturities and currencies to ensure an adequate diversification of the sources of funding and an efficient access to external sources of financing (taking advantage of the best opportunities offered in the financial markets of the euro, U.S. dollar and Pound sterling areas to minimize costs), taking care to reduce the refinancing risk. The remuneration of equity is proposed by the board of directors to the shareholders’ meeting, which meets to approve the annual financial statements, based upon market trends and business performance, once all the other obligations are met, including debt servicing. Therefore, in order to guarantee an adequate remuneration of capital, safeguard company continuity and business development, the Group constantly monitors the change in debt levels in relation to equity, the level of net debt and the operating margin of industrial operations. Rights of savings shares The rights of the TIM S.p.A. savings shares are indicated below: · the profit shown in the duly approved separate financial statements, less the amount appropriated to the legal reserve, must be distributed to the holders of savings shares in an amount up to 5% of the 0.55 euros per share; · after assigning preferred dividends to the savings shares, the distribution of which is approved by the shareholders’ meeting, the remaining profit shall be assigned to all the shares so that the savings shares have the right to dividends that are higher, than the dividends to which the ordinary shares are entitled, by 2% of 0.55 euros per share; · if in any one year dividends of below 5% of the 0.55 euros per share are paid to the savings shares, the difference is carried over and added to the preferred dividends for the next two successive years; · in the case of the distribution of reserves, the savings shares have the same rights as ordinary shares. Moreover, when there is no profit or insufficient profit reported in the separate financial statements for the year to satisfy the rights of the savings shares, the shareholders’ meeting called to approve those separate financial statements may choose to satisfy the dividend right and/or the additional right by distributing available reserves. The distribution of available reserves for such payments excludes the application of the mechanism extending the right to the preferred dividend not paid through the distribution of profits for the following two years; · the reduction of share capital as a result of losses does not affect the savings shares except for the amount of the loss which is not covered by the portion of the share capital represented by the other shares; · upon the wind-up pre-emptive · in the event of the cessation of trading in the Company’s ordinary or savings shares, the holder of savings shares may ask TIM S.p.A. to convert its shares into ordinary shares, according to the manner resolved by the special session of the shareholders’ meeting called for that purpose within two months of being excluded from trading. Additional paid-in Other reserves moved through the Statements of comprehensive income · The Reserve for financial assets measured at fair value through other comprehensive income available-for-sale · The Reserve for cash flow hedges · The Reserve for exchange differences on translating foreign operations · The Reserve for re-measurements · The Share of other profits (losses) of associates and joint ventures Other sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year Year ended 2018 2017 (millions of euros) IFRS 9 and IFRS 15 Adoption (92 ) — Profit (loss) for the year attributable to Owners of the Parent (1,411 ) 1,121 Dividends approved—TIM S.p.A. (166 ) (166 ) Grant of equity instruments 2 (6 ) Other changes 2 9 Change for the year in Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year (1,665 ) 958 The dividends paid by TIM S.p.A., amounting to 166 million euros in 2018 and in 2017, relate to savings shares with a dividend per share of 0.0275 euros. Non-controlling Year ended 2018 2017 (millions of euros) IFRS 9 and IFRS 15 Adoption (5 ) — Profit (loss) for the year attributable to Non-controlling 259 166 Group Company dividends paid to non-controlling (115 ) (64 ) Changes in the Reserve for exchange differences on translating foreign operations (169 ) (236 ) Other changes 23 14 Change for the year in Equity attributable to Non-Controlling (7 ) (120 ) The dividends of Group companies to minority shareholders refer mainly to INWIT for 46 million euros (35 million euros in 2017) and the Brazil Business Unit for 66 million euros (25 million euros in 2017). The Reserve for exchange differences on translating foreign operations attributable to non-controlling Future Potential changes in share capital “Future potential changes in share capital” are presented in the Note “Earnings per share”.

Financial Liabilities (Non-curr

Financial Liabilities (Non-current and Current)	12 Months Ended
	Dec. 31, 2018
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Financial Liabilities (Non-current and Current)	NOTE 16—FINANCIAL LIABILITIES (NON—CURRENT AND CURRENT) Non-current As of December 31, 2018 2017 (millions of euros) Financial payables (medium/long-term): Bonds 16,686 18,119 Convertible Bonds 1,893 1,862 Amounts due to banks 3,160 3,798 Other financial payables 155 161 21,894 23,940 Finance lease liabilities (medium/long-term) 1,740 2,249 Other financial liabilities (medium/long-term): Hedging derivatives relating to hedged items classified as non-current 1,423 1,914 Non-hedging 2 5 Other liabilities — — 1,425 1,919 Total Non-current (A) 25,059 28,108 Financial payables (short-term): Bonds 2,912 2,215 Convertible Bonds 6 6 Amounts due to banks 2,385 2,183 Other financial payables 64 96 5,367 4,500 Finance lease liabilities (short-term) 208 181 Other financial liabilities (short-term): Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature 338 71 Non-hedging — 4 Other liabilities — — 338 75 Total Current financial liabilities (B) 5,913 4,756 Financial liabilities directly associated with Discontinued operations/Non-current (C) — — Total Financial liabilities (Gross financial debt) (A+B+C) 30,972 32,864 Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”. Gross financial debt according to the original currency of the transaction is as follows: As of December 31, 2018 As of December 31, 2017 (millions of (millions of (millions of (millions of USD 6,450 5,633 7,168 5,977 GBP 1,267 1,416 1,266 1,427 BRL 2,609 588 5,863 1,478 JPY 20,033 159 20,031 148 EURO — 23,176 — 23,834 Total 30,972 32,864 The breakdown of gross financial debt by effective interest rate bracket related to the original transaction excluding the effect of any hedging instruments, is provided below: As of December 31, 2018 2017 (millions of euros) Up to 2.5% 5,173 5,005 From 2.5% to 5% 10,534 10,571 From 5% to 7.5% 10,130 11,265 From 7.5% to 10% 2,209 2,690 Over 10% 443 589 Accruals/deferrals, MTM and derivatives 2,483 2,744 Total 30,972 32,864 Following the use of derivative hedging instruments, on the other hand, the gross financial debt by nominal interest rate bracket is: As of December 31, 2018 2017 (millions of euros) Up to 2.5% 12,667 13,071 From 2.5% to 5% 7,881 6,631 From 5% to 7.5% 6,155 7,366 From 7.5% to 10% 1,343 1,849 Over 10% 443 1,203 Accruals/deferrals, MTM and derivatives 2,483 2,744 Total 30,972 32,864 The maturities of financial liabilities according to the expected nominal repayment amount, as defined by contract, are the following: Details of the maturities of Financial liabilities—at nominal repayment amount Maturing by December 31, of the year 2019 2020 2021 2022 2023 After Total (millions of euros) Bonds 2,446 1,267 564 3,087 2,419 11,238 21,021 Loans and other financial liabilities 1,293 384 1,343 819 331 221 4,391 Finance lease liabilities 190 181 172 132 130 1,124 1,929 Total 3,929 1,832 2,079 4,038 2,880 12,583 27,341 Current financial liabilities 1,308 — — — — — 1,308 Total 5,237 1,832 2,079 4,038 2,880 12,583 28,649 The main components of financial liabilities are commented below. Bonds As of December 31, 2018 2017 (millions of euros) Non-current 16,686 18,119 Current portion 2,912 2,215 Total carrying amount 19,598 20,334 Fair value adjustment and measurement at amortized cost (577 ) (559 ) Total nominal repayment amount 19,021 19,775 The convertible bonds As of December 31, 2018 2017 (millions of euros) Non-current 1,893 1,862 Current portion 6 6 Total carrying amount 1,899 1,868 Fair value adjustment and measurement at amortized cost 101 132 Total nominal repayment amount 2,000 2,000 The nominal repayment amount of bonds and convertible bonds totaled 21,021 million euros, down by 754 million euros compared to December 31, 2017 (21,775 million euros) as a result of new issues, repayments and the exchange effect in 2018. The following table lists the bonds issued by companies of the TIM Group, by issuing company, expressed at the nominal repayment amount, net of bond repurchases, and also at market value: Currency Amount Nominal Coupon Issue Maturity Issue Market price Market value Bonds issued by TIM S.p.A. Euro 832.4 832.4 5.375% 1/29/04 1/29/19 99.070 100.486 836 GBP 850.0 950.2 6.375% 6/24/04 6/24/19 98.850 101.761 967 Euro 719.4 719.4 4.000% 12/21/12 1/21/20 99.184 103.331 743 Euro 547.5 547.5 4.875% 9/25/13 9/25/20 98.966 106.290 582 Euro 563.6 563.6 4.500% 1/23/14 1/25/21 99.447 105.849 597 Euro (b) 202.7 202.7 6 month Euribor (base 365) 01/01/02 01/01/22 100 100 203 Euro 883.9 883.9 5.250% 02/10/10 02/10/22 99.295 108.430 958 Euro (c)2,000 2,000 1.125% 3/26/15 3/26/22 100 99.934 1,879 Euro 1,000 1,000 3.250% 1/16/15 1/16/23 99.446 102.010 1,020 GBP 375 419.2 5.875% 5/19/06 5/19/23 99.622 104,518 438 Euro 1,000 1,000 2.500% 1/19/17 7/19/23 99.288 98.417 984 Euro 750 750 3.625% 1/20/16 1/19/24 99.632 103.328 775 USD 1,500 1,310 5.303% 5/30/14 5/30/24 100 95.530 1,251 Euro 1,000 1,000 3.000% 9/30/16 9/30/25 99.806 97.468 975 Euro 750 750 2.875% 06/28/18 01/28/26 100 95.218 714 Euro 1,000 1,000 3.625% 5/25/16 5/25/26 100 99.952 1,000 Euro 1,250 1,250 2.375% 10/12/17 10/12/27 99.185 89.357 1,117 Euro 670 670 5.250% 03/17/05 03/17/55 99.667 97.104 651 Sub-Total 15,849 15,690 Bonds issued by Telecom Italia Finance S.A. and guaranteed by TIM S.p.A. Euro 1,015 1,015 7.750% 01/24/03 01/24/33 (a) 109.646 125.429 1,273 Sub-Total 1,015 1,273 Bonds issued by Telecom Italia Capital S.A. and guaranteed by TIM S.p.A. USD (d) 759.7 663.4 7.175% 06/18/09 06/18/19 100 101.358 672 USD 1,000 873.4 6.375% 10/29/03 11/15/33 99.558 90.113 787 USD 1,000 873.4 6.000% 10/06/04 09/30/34 99.081 87.489 764 USD 1,000 873.4 7.200% 07/18/06 07/18/36 99.440 96.061 839 USD 1,000 873.4 7.721% 06/04/08 06/04/38 100 99.471 869 Sub-Total 4,157 3,931 Total 21,021 20,894 (a) Weighted average issue price for bonds issued with more than one tranche. (b) Reserved for employees. (c) Bond convertible into newly-issued TIM S.p.A. ordinary treasury shares. (d) Net of the securities bought back by TIM S.p.A. on July 20, 2015. The following table lists the changes in bonds during 2018: New issues Currency Amount Issue date Telecom Italia S.p.A. 750 million euros 2.875% maturing 01/28/2026 Euro 750 6/28/2018 Repayments Currency Amount Repayment date Telecom Italia S.p.A. 593 million euros 4.750% (1) Euro 593 5/25/2018 Telecom Italia S.p.A. 677 million US dollars 6.999% (2) USD 677 6/4/2018 Telecom Italia S.p.A. 582 million euros 6.125% (3) Euro 582 12/14/2018 (1) Net of buy-backs (2) Net of the securities bought back by TIM S.p.A. (323 million US dollars) on July 20, 2015. (3) Net of buy-backs Medium/long-term amounts due to banks repurchase agreements Medium/long-term other financial payables Medium/long-term finance lease liabilities Hedging derivatives non-current Non-hedging non-current non-hedging Covenants and negative pledges in place at December 31, 2018 Bonds issued by the TIM Group do not contain financial covenants (1) Since the bonds were placed principally with institutional investors in major world capital markets (Euromarket and the U.S.A.), the terms which regulate the bonds are in line with market practice With regard to loans taken out by TIM S.p.A. with the European Investment Bank (EIB), at December 31, 2018, the nominal amount of outstanding loans amounted to 1,350 million euros, of which 800 million euros at direct risk and 550 million euros secured. EIB loans not secured by bank guarantees for a nominal amount equal to 800 million euros are subject to the following covenants: · in the event the company becomes the target of a merger, demerger or contribution of a business segment outside the Group, or sells, disposes of or transfers assets or business segments (except in certain cases, expressly provided for), it shall immediately inform the EIB which shall have the right to ask for guarantees to be provided or changes to be made to the loan contract, or, only for certain loan contracts, the EIB shall have the option to demand the immediate repayment of the loan (should the merger, demerger or contribution of a business segment outside the Group compromise the Project execution or cause a prejudice to EIB in its capacity as creditor); · with the 500 million euros loan, signed on December 14, 2015, TIM undertook to ensure that, for the entire duration of the loan, the total financial debt of the Group companies other than TIM S.p.A.—except for the cases when that debt is fully and irrevocably secured by TIM S.p.A.—is lower than 35% (thirty-five percent) of the Group’s total financial debt. EIB loans secured by banks or entities approved by the EIB for a total nominal amount of 550 million euros, and direct risk loans are subject to the following covenants: · “Inclusion clause”, under which, in the event TIM commits to uphold financial covenants in other loan contracts (and even more restrictive clauses for 2014 and 2015 direct risk loans, including, for instance, cross default clauses and commitments restricting the sale of goods) that are not present in or are stricter than those granted to the EIB, the EIB will have the right—if, in its reasonable opinion, it considers that such changes may have a negative impact on TIM’s financial capacity—to request the provision of guarantees or an amendment of the loan contract in order to establish an equivalent provision in favor of the EIB; · “Network Event”, under which, in the event of the disposal of the entire fixed network or of a substantial part of it (in any case, more than half in quantitative terms) to third parties not controlled by the Company, or in the event of disposal of the controlling interest in the company in which the network or a substantial part of it has previously been transferred, TIM must immediately inform the EIB, which may then opt to demand collateral or an amendment of the loan contract or choose an alternative solution. The loan agreements of TIM S.p.A. do not contain financial covenants ( The loan agreements contain the usual other types of covenants assets negative pledge fair market value Covenants export credit loan agreements In the Loan Agreements and the Bonds, TIM is required to provide notification of change of control. Identification of the occurrence of a change of control and the applicable consequences—including, at the discretion of the (1) A change of control event investors, the establishment of guarantees or the early repayment of the amount paid in cash or as shares and the cancellation of the commitment in the absence of agreements to the contrary—are specifically covered in the individual agreements. In addition, the outstanding loans generally contain a commitment by TIM, whose breach is an Event of Default, not to implement mergers, demergers or transfers of business, involving entities outside the Group. Such an Event of Default may entail, upon request of the Lender, the early redemption of the drawn amounts and/or the annulment of the undrawn commitment. In the documentation of the loans granted to certain companies of the Tim Brasil group, the companies must generally respect certain financial ratios ( Finally, as at December 31, 2018, no covenant negative pledge Revolving Credit Facility The following table shows the composition and the drawdown of the committed credit lines available at December 31, 2018: As of December 31, 2018 2017 Agreed Drawn down Agreed Drawn down (billions of euros) Revolving Credit Facility—maturing May 2019 — — 4.00 — Revolving Credit Facility—maturing March 2020 — — 3.00 — Revolving Credit-Facility—maturing January 2023 5.00 — — — Total 5.00 — 7.00 — On January 16, 2018, two syndicated Revolving Credit Facilities existing at December 31, 2017 were closed in advance and replaced by a new syndicated Revolving Credit Facility for a total of 5 billion euros, maturing on January 16, 2023, currently not drawn. At December 31, 2018, TIM had bilateral Term Loans for 1,475 million euros and overdraft facilities for 250 million euros, drawn down for the full amount. TIM rating at December 31, 2018 At December 31, 2018, the three rating agencies—Standard & Poor’s, Moody’s and Fitch Ratings—rated TIM as follows: Rating Outlook STANDARD &POOR’S BB+ Stable MOODY’S Ba1 Stable FITCH RATINGS BBB- Negative Additional cash flow information required by IAS 7. Cash transactions Non cash transactions As of Receipts Payments and/or Exchange Fair Other As of (millions of euros) Financial payables (medium/long-term): Bonds 20,334 750 (1,751 ) 249 15 1 19,598 Convertible Bonds 1,868 31 1,899 Amounts due to banks 5,080 1,705 (2,425 ) (86 ) 23 4,297 Other financial payables 175 (4 ) 9 (23 ) 157 (a) 27,457 2,455 (4,180 ) 172 15 32 25,951 of which short term 3,517 4,057 Finance lease liabilities (medium/long-term) 2,430 91 (246 ) (42 ) (285 ) 1,948 (b) 2,430 91 (246 ) (42 ) — (285 ) 1,948 of which short term 181 208 Other financial liabilities (medium/long-term): Hedging derivatives relating to hedged items classified as non-current 1,985 (28 ) (190 ) (6 ) 1,761 Non-hedging 9 (4 ) (3 ) 2 Other liabilities — — (c) 1,994 — — (32 ) (190 ) (9 ) 1,763 of which short term 75 338 Financial payables (short-term): Amounts due to banks 901 1,793 (1,446 ) — 1,248 Other financial payables 82 (20 ) 62 (d) 983 1,793 (1,446 ) — — (20 ) 1,310 Total Financial liabilities (Gross financial debt) (e=a+b+ c+d) 32,864 4,339 (5,872 ) 98 (175 ) (282 ) 30,972 Hedging derivatives relating to hedged items classified as current and non-current (f) 1,755 89 (115 ) 3 1,732 Non hedging derivatives (g) 22 (1 ) (2 ) 19 Total (h=e-f-g) 31,087 4,339 (5,872 ) 10 (58 ) (285 ) 29,221 Additional cash flow information The value of the paid and collected interest expense reported in the Report on Operations takes into account the movements relating to transactions in CCIRS derivatives to hedge underlying assets in both the assets component (collections) and the liabilities component (payments) without netting the positions. 2018 2017 (millions of euros) Interest expense paid (1,978 ) (2,899 ) Interest income received 871 1,636 Net total (1,107 ) (1,263 ) To consider the components of CCIRS derivatives as a single transaction, a representation is given with interest flows in and out shown net. This approach gives the following results: 2018 2017 (millions of euros) Interest expense paid (1,485 ) (2,304 ) Interest income received 378 1,041 Net total (1,107 ) (1,263 )

Financial Risk Management

Financial Risk Management	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Financial Risk Management	NOTE 17—FINANCIAL RISK MANAGEMENT Financial risk management objectives and policies of the TIM Group The TIM Group is exposed to the following financial risks in the ordinary course of its business operations: · market risk: stemming from changes in interest rates and exchange rates in connection with financial assets that have been originated and financial liabilities that have been assumed; · credit risk: representing the risk of non-fulfillment · liquidity risk: connected with the need to meet short-term financial commitments. These financial risks are managed by: · the establishment, at central level, of guidelines for directing operations; · the work of an internal committee that monitors the level of exposure to market risks in accordance with preestablished general objectives; · the identification of the most suitable financial instruments, including derivatives, to reach preestablished objectives; · the monitoring of the results achieved; · the exclusion of the use of financial instruments for speculative purposes. The policies for the management and the sensitivity analyses of the above financial risks by the TIM Group are described below. Identification of risks and analysis The TIM Group is exposed to market risks, as a result of changes in interest rates and exchange rates, in the markets in which it operates or has bond issues, mainly in Europe, the United States, Great Britain and Latin America. The financial risk management policies of the TIM Group are directed towards diversifying market risks, hedging exchange rate risk in full and minimizing interest rate exposure by an appropriate diversification of the portfolio, which is also achieved by using carefully selected derivative financial instruments. The Group sets an optimum composition for the fixed-rate and variable-rate debt structure and uses derivative financial instruments to achieve that set composition. In consideration of the Group’s operating activities, the optimum combination of medium/long-term non-current 65%-75% 25%-35% In managing market risk, the Group has adopted Guidelines on “Management and control of financial risk” and mainly uses the following financial derivatives: · Interest Rate Swaps (IRS), to modify the profile of the original exposure to interest rate risks on loans and bonds, both fixed and variable; · Cross Currency and Interest Rate Swaps (CCIRS) and Currency Forwards, to convert loans and bonds issued in currencies other than euro—principally in US dollars and British pounds—to the functional currencies of the operating companies. Derivative financial instruments are designated as fair value hedges for managing exchange rate and interest rate risk on instruments denominated in currencies other than euro and for managing interest rate risk on fixed-rate loans. Derivative financial instruments are designated as cash flow hedges when the objective is to pre-set All derivative financial instruments are entered into with banking and financial counterparties with at least a “BBB-” · sensitivity analyses were performed by applying reasonably likely changes in the relevant risk variables to the amounts in the consolidated financial statements at December 31, 2018; · the changes in value of fixed-rate financial instruments, other than derivatives, produced by changes in the reference interest rates, generate an impact on profit only when, in accordance with IAS 39 and IFRS 9, they are accounted for at their fair value through profit and loss. All fixed-rate instruments, which are accounted for at amortized cost, are not subject to interest rate risk as defined by IFRS 7; · in the case of fair value hedge relationships, fair value changes of the underlying hedged item and of the derivative instrument, due to changes in the reference interest rates, offset each other almost entirely in the income statement for the year. As a result, these financial instruments are not exposed to interest rate risk; · the changes in value of designated financial instruments in a cash flow hedge relationship, produced by changes in interest rates, generate an impact on the debt level and on equity; accordingly, they are included in this analysis; · the changes in value, produced by changes in the reference interest rates, of variable-rate financial instruments, other than derivatives, which are not part of a cash flow hedge relationship, generate an impact on the finance income and expenses for the year; accordingly they are included in this analysis. Exchange rate risk—Sensitivity analysis At December 31, 2018 (and also at December 31, 2017), the exchange rate risk of the Group’s loans denominated in currencies other than the functional currency of the consolidated financial statements was hedged in full. Accordingly, a sensitivity analysis was not performed on exchange risk. Interest rate risk—Sensitivity analysis The change in interest rates on the variable component of payables and liquidity may lead to higher or lower finance income and expenses, while the changes in the level of the expected interest rate affect the fair value measurement of the Group’s derivatives. In particular: · with regard to derivatives that convert the liabilities contracted by the Group to fixed rates (cash flow hedging), in line with international accounting standards that regulate hedge accounting, the fair value (mark-to-market) mark-to-market · if at December 31, 2018 the interest rates in the various markets in which the TIM Group operates had been 100 basis points higher/lower compared to the actual rates, then higher/lower finance expenses, before the income tax effect, would have been recognized in the income statement of 63 million euros (50 million euros at December 31, 2017). Allocation of the financial structure between fixed rate and variable rate As for the allocation of the financial structure between the fixed-rate component and the variable-rate component, for both financial assets and liabilities, reference should be made to the following tables. They show the nominal repayment/investment amount (insofar as that amount expresses the effective interest rate exposure of the Group) and, as far as financial assets are concerned, the intrinsic nature (financial characteristics and duration) of the transactions under consideration rather than just the stated contractual terms alone. Bearing that in mind, a transaction whose characteristics (short or very short time frame and frequent renewal) are such that the interest rate is periodically reset on the basis of market parameters, even though the contract does not call for re-fixing Total financial liabilities (at the nominal repayment amount) As of December 31, 2018 As of December 31, 2017 Fixed Variable Total Fixed Variable Total (millions of euros) Bonds 16,484 4,537 21,021 17,237 4,538 21,775 Loans and other financial liabilities(*) 2,820 3,500 6,320 3,689 3,881 7,570 Total non-current 19,304 8,037 27,341 20,926 8,419 29,345 Total current financial liabilities(*) 857 451 1,308 282 700 982 Total 20,161 8,488 28,649 21,208 9,119 30,327 (*) At December 31, 2017, variable-rate current liabilities included 38 million euros of payables to other lenders for installments paid in advance, which are classified in this line item even though they are not correlated to a definite rate parameter. Total financial assets (at the nominal investment amount) As of December 31, 2018 As of December 31, 2017 Fixed Variable Total Fixed Variable Total (millions of euros) Cash and cash equivalents — 1,695 1,695 — 2,930 2,930 Securities 950 401 1,351 623 1,100 1,723 Other receivables 879 71 950 927 79 1,006 Total 1,829 2,167 3,996 1,550 4,109 5,659 With respect to variable-rate financial instruments, the contracts provide for revisions of the relative parameters to take place within the subsequent 12 months. Effective interest rate As to the effective interest rate, for the categories where that parameter can be determined, such parameter refers to the original transaction net of the effect of any derivative hedging instruments. The disclosure, since it is provided by class of financial asset and liability, was determined, for purposes of calculating the weighted average, using the carrying amount adjusted by accruals, prepayments, deferrals and changes in fair value: this is therefore the amortized cost, net of accruals and any changes in fair value as a consequence of hedge accounting. Total financial liabilities As of December 31, 2018 As of December 31, 2017 Adjusted Effective Adjusted Effective (millions of (%) (millions of (%) Bonds 20,808 4.83 21,521 4.96 Loans and other financial liabilities 7,681 3.02 8,599 3.59 Total 28,489 4.34 30,120 4.57 Total financial assets As of December 31, 2018 As of December 31, 2017 Adjusted Effective Adjusted Effective (millions of (%) (millions of (%) Cash and cash equivalents 1,695 0.12 2,930 0.05 Securities 1,351 3.13 1,723 4.07 Other receivables 182 2.96 326 2.03 Total 3,228 1.54 4,979 1.57 As for financial assets, the weighted average effective interest rate is not essentially influenced by the existence of derivatives. As for market risk management using derivatives, reference should be made to the Note “Derivatives”. Credit risk Exposure to credit risk for the TIM Group consists of possible losses that could arise from the failure of either commercial or financial counterparties to fulfill their assumed obligations. To measure this risk over time for impairment of financial assets (trade receivables due from customers included), the introduction of IFRS 9 required switching from the incurred loss model pursuant to IAS 39 to the expected credit loss model. Such exposure mainly stems from general economic and financial factors, the potential occurrence of specific insolvency situations of some borrowers and other more strictly technical-commercial or administrative factors. The TIM Group’s maximum theoretical exposure to credit risk is represented by the carrying amount of the financial assets and trade receivables recorded in the financial statements. Risk related to trade receivables is managed using customer scoring and analysis systems. For specific categories of trade receivables, the Group also makes use of factoring, mainly on a “non-recourse” Provision charges for bad debts are recorded for specific credit positions that have an element of individual risk. On credit positions that do not have such characteristics, provision charges are recorded by customer segment according to the average uncollectibility estimated on the basis of statistics. Further details are provided in the Note “Trade and miscellaneous receivables and other current assets”. Financial assets other than trade receivables are written down for impairment on the basis of a general model which estimates expected credit losses over the following 12 months, or over the residual life of the asset in the event of a substantial increase in its credit risk. The expected credit loss is calculated based on the default probability and the percentage of credit that cannot be recovered in the event of a default (the loss given default). Moreover, as regards credit risk relating to the asset components which contribute to the determination of “Net financial debt”, it should be noted that the management of the Group’s liquidity is guided by conservative criteria and is principally based on the following: · money market management: the investment of temporary excess cash resources; · bond portfolio management: the investment of a permanent level of liquidity and the investment of that part of medium term liquidity, as well as the improvement in the average yield. In order to limit the risk of the non-fulfillment In order to minimize credit risk, the Group also pursues a diversification policy for its investments of liquidity and allocation of its credit positions among different banking counterparties. Consequently, there are no significant positions with any one single counterparty. Liquidity risk The Group pursues the objective of achieving an “adequate level of financial flexibility” which is expressed by maintaining a current treasury margin to cover the refinancing requirements at least for the next 12 months with irrevocable bank lines and liquidity. 18% of gross financial debt at December 31, 2018 (nominal repayment amount) will become due in the next 12 months. Current financial assets at December 31, 2018, together with unused committed bank lines, are sufficient to fully cover the Group’s financial liabilities due at least for the next 24 months. The following tables report the contractual cash flows, not discounted to present value, relative to gross financial debt at nominal repayment amounts and the interest flows, determined using the terms and the interest and exchange rates in place at December 31, 2018. The portions of principal and interest of the hedged liabilities includes both the disbursements and the receipts of the relative hedging derivatives. Specifically, the interest portions of “Loans and other financial liabilities” also include that relating to derivatives hedging for both loans and bonds. Financial liabilities—Maturities of contractually expected disbursements Maturing by December 31, of the year 2019 2020 2021 2022 2023 After 2023 Total (millions of euros) Bonds Principal 2,446 1,267 564 3,087 2,419 11,238 21,021 Interest 927 799 743 706 649 5,255 9,079 Loans and other financial liabilities (*) Principal 1,293 384 1,343 819 331 221 4,391 Interest (52 ) (55 ) (71 ) (85 ) (96 ) (808 ) (1,167 ) Finance lease liabilities Principal 190 181 172 132 130 1,124 1,929 Interest 135 126 116 108 100 561 1,146 Non-current Principal 3,929 1,832 2,079 4,038 2,880 12,583 27,341 Interest 1,010 870 788 729 653 5,008 9,058 Current financial liabilities Principal 1,308 — — — — — 1,308 Interest 3 — — — — — 3 Total financial liabilities Principal 5,237 1,832 2,079 4,038 2,880 12,583 28,649 Interest 1,013 870 788 729 653 5,008 9,061 (*) These include hedging and non-hedging Derivatives on financial liabilities—Contractually expected interest flows Maturing by December 31, of the year 2019 2020 2021 2022 2023 After 2023 Total (millions of euros) Disbursements 350 298 297 297 289 2,343 3,874 Receipts (499 ) (424 ) (424 ) (424 ) (414 ) (3,313 ) (5,498 ) Hedging derivatives—net (receipts) disbursements (149 ) (126 ) (127 ) (127 ) (125 ) (970 ) (1,624 ) Disbursements 39 27 18 16 9 23 132 Receipts (12 ) (7 ) (4 ) (4 ) (2 ) (6 ) (35 ) Non-hedging 27 20 14 12 7 17 97 Total net (receipts) disbursements (122 ) (106 ) (113 ) (115 ) (118 ) (953 ) (1,527 ) Market value of derivatives In order to determine the fair value of derivatives, the TIM Group uses various valuation models. The mark-to-market The notional amount of IRS does not represent the amount exchanged between the parties and therefore does not constitute a measurement of credit risk exposure which, instead, is limited to the amount of the difference between the interest rates paid/received. The market value of CCIRSs, on the other hand, also depends on the differential between the reference exchange rate at the date of signing the contract and the exchange rate at the date of measurement, since CCIRSs involve the exchange of the reference interest and principal, in the respective currencies of denomination. The options are measured according to the Black & Scholes or Binomial models and involve the use of various measurements factors, such as: time horizon of the life of the option, risk-free rate of return, current price, volatility and any cash flows (e.g. dividend) of the underlying instrument, and exercise price.

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Derivatives	NOTE 18—DERIVATIVES The hedge accounting rules provided by IAS 39 continued to be applied in the first half for derivatives. Derivative financial instruments are used by the TIM Group to hedge its exposure to foreign exchange rate risk, to manage interest rate risk and to diversify the parameters of debt so that costs and volatility can be reduced to within predetermined operational limits. Derivative financial instruments in place at December 31, 2018 are principally used to manage debt positions. They include interest rate swaps (IRSs) to reduce interest rate exposure on fixed-rate and variable-rate bank loans and bonds, as well as cross currency and interest rate swaps (CCIRSs), currency forwards and foreign exchange options to convert the loans/receivables secured in currencies different from the functional currencies of the various Group companies. IRS transactions, provide for or may entail, at specified maturity dates, the exchange of flows of interest, calculated on the notional amount, at the agreed fixed or variable rates. The same also applies to CCIRS transactions which, in addition to the settlement of periodic interest flows, may provide for the exchange of principal, in the respective currencies of denomination, at maturity and possibly spot. Hedging: economic relationship between the underlying and derivatives Hedging relationships recorded in hedge accounting at 12/31/2018 belong to two categories: i) hedging of the fair value of bond issues denominated in euros and ii) hedging of cash flows from coupon flows of bond issues denominated in currencies other than the euro. In the first case, the hedged risk is represented by the fair value of the bond attributable to euro interest rates and is hedged by IRS. The present value of both instruments, the underlying and derivatives, depends on the structure of interest rates on the euro market, used to calculate the discount factor and variable interest flows of the derivative. In particular, oscillating rates will translate as changes in the discount factor of the fixed interest expense on the underlying; on the derivative, changes in the discount factor of interest income will occur, as well as changes in the nominal flow of variable interest (only partially corrected by the discounting effect). The effects on the derivative will be opposite, in accounting terms, to the effects on the underlying. In the second case, the hedged risk is represented by the variability in cash flows (and the repayment of the nominal amount) generated by exchange rates; hedging comprises combinations of IRS and CCIRS that synthetically transform fixed rate coupon flows into currency into fixed rate flows in euro. In this case, exchange rate oscillations will usually produce contrary effects on the underlying and on the derivative as the asset leg of the latter faithfully reflects the underlying, while the liability leg is denominated in euros and is therefore insensitive to the exchange rate. Hedging: determination of the hedge ratio The types of hedging adopted by the Group require a hedge ratio equal to 1:1, as the types of risk hedged (interest rate and exchange risks) are such as to generate economic effects on the underlying instruments that can only be offset by the same notional quantities of derivative instruments. Hedging: potential sources of ineffectiveness The contractualization of derivatives to hedge financial risks takes place at arm’s length and aims to fully neutralize the effects of such risks. However, in practice, both fair value hedges and cash flows hedges, although financially perfect, cannot guarantee absolute effectiveness due to the many banks involved, the particular nature of some derivatives attributable to fixing and/or the indexing of variable parameters, and the possible imperfect correspondence of critical terms. The following table indicates total financial derivatives of the TIM Group at December 31, 2018 and in 2017; in compliance with the requirements of IFRS 7, a move has been made from the representation of the synthetic notional value of the hedge to the current representation, where the notional amounts are shown in relation to all derivative instruments involved in hedging. The following tables break down the financial derivatives by type of risk for each kind of hedging, separating financial assets and liabilities. For CCIRS, the notional amount refers to the contractual value in euros, for IRS in a currency other than the euro, the value is indicated at the market exchange rate. Type Hedged Risk Notional amount Notional amount Spot (*) Mark-to-Market Spot (*) Mark-to-Market (millions of euros) Interest rate swaps Interest rate risk 4,334 4,334 52 2 Cross Currency and Interest Rate Swaps Interest rate risk and currency exchange rate risk — — — — Total Fair Value Hedge Derivatives 4,334 4,334 52 2 Interest rate swaps Interest rate risk 4,992 5,178 182 346 Cross Currency and Interest Rate Swaps Interest rate risk and currency exchange rate risk 6,804 7,239 (365 ) (672 ) Total Cash Flow Hedge Derivatives 11,796 12,417 (183 ) (325 ) Total Non-Hedge 223 213 17 15 Total TIM Group Derivatives 16,353 16,964 (114 ) (308 ) (*) Spot Mark-to-market Fair value hedges Accounting item Nominal Carrying Change in fair value for the year (millions of euro) Interest rate swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (a) 4,334 52 50 Assets 52 Liabilities — — Cross Currency and Interest Rate Swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (b) — — — Assets — — Liabilities — — Derivatives (spot value) (a+b) 4,334 52 50 Accruals 21 Derivatives (gross value) 73 Underlying instruments (1) Bonds—Current / non-current 4,334 (4,368 ) of which the fair value adjustment Fair value adjustment and measurements at amortized cost (c) (58 ) (53 ) Ineffectiveness (a+b+c) (3 ) Fair value adjustment for hedging settled in advance (2) (157 ) (1) Includes the amortized cost value of bonds currently hedged plus the fair value adjustment. (2) Referred to bonds no longer hedged, which are therefore not presented in the table. Cash flow hedges Accounting item Nominal Carrying Change in fair value for the year Change in (millions of euro) Interest rate swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (a) 4,992 182 (165 ) Assets 923 (180 ) Liabilities (741 ) 15 Cross Currency and Interest Rate Swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (b) 6,804 (365 ) 307 Assets 590 122 Liabilities (955 ) 185 Derivatives (spot value) (a+b) 11,796 (183 ) 142 Accruals 81 Derivatives (gross value) (102 ) of which equity reserve gains and losses 20 Determination of ineffectiveness Change in derivatives (c) 28 Change in underlying instruments (3) (d) (18 ) Ineffectiveness (4) Positive fair value adjustment of financial derivatives—non-hedging (c+d) 10 Equity reserve Equity reserve balance (720 ) of which due to the fair value of hedging settled in advance (6 ) Reclassification to P&L Negative reversal of the reserve for the fair value adjustment of hedging derivatives (cash flow hedges) (2 ) (3) Hypothetical derivatives used in measuring the effectiveness of cash flow hedges. (4) The ineffectiveness, due to its nature and calculation, does not necessarily coincide with the difference in cumulative changes in the fair value of derivatives and the underlying; the effect due to the adoption of CVA/DVA is not considered. The change in the equity reserve attributable to the effective hedging component is equal to 26 million euros and comprises: Change Changes in the equity cash As of Hedging instrument Reversal from Reversal for the fair value adjustment of Other As of (millions of euros) (746 ) (720 ) Change in the effective fair value of derivatives 20 Change in the CVA/DVA 8 Reversal for ineffectiveness 2017 (5 ) Amortization in P&L of the fair value of hedging settled in advance 2 Other 1 Overall change 26 None of the parameters represented includes any income tax effect. The transactions hedged by cash flow hedges will generate cash flows and produce economic effects in the income statement in the periods indicated in the following table: Currency of Notional amount Start of End of Rate applied Interest period Notional in Rate in euro GBP 850 Jan-19 Jun-19 6.375% Annually 1,214 5.311% GBP 375 Jan-19 May-23 5.875% Annually 552 5.535% JPY* 20,000 Jan-19 Oct-29 5.000% Semiannually 174 5.940% JPY** 20,000 Jan-19 Oct-29 0.750% Semiannually 138 0.696% USD 1,000 Jan-19 Nov-33 6.375% Semiannually 849 5.994% USD 1,500 Jan-19 May-24 5.303% Semiannually 1,099 4.226% USD 760 Jan-19 Jun-19 7.175% Semiannually 549 6.689% USD 1,000 Jan-19 Sept-34 6.000% Semiannually 794 4.332% USD 1,000 Jan-19 July-36 7.200% Semiannually 791 5.884% USD 1,000 Jan-19 Jun-38 7.721% Semiannually 645 7.470% * Coupon-bearing bond flows are denominated in USD and calculated on a notional of 187.6 million USD. ** Only hedging of coupon-bearing bond flow as a result of step-up The method selected to test the effectiveness retrospectively and, whenever the principal terms do not fully coincide, prospectively, for cash flow hedge derivatives and fair value hedge derivatives is the Volatility Risk Reduction (VRR) Test. This test assesses the ratio between the portfolio risk (where the portfolio means the derivative and the item hedged) and the risk of the hedged item taken separately. In essence, the portfolio risk must be significantly less than the risk of the hedged item.

Supplementary Disclosures on Fi

Supplementary Disclosures on Financial Instruments	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Supplementary Disclosures on Financial Instruments	NOTE 19—SUPPLEMENTARY DISCLOSURES ON FINANCIAL INSTRUMENTS Measurement at fair value For the purposes of the comparative information between the carrying amounts and the fair value of financial instruments, required by IFRS 7, the majority of the non-current (non-current · for variable-rate loans: the nominal repayment amount has been assumed; · for fixed-rate loans: fair value has been assumed to be the present value of future cash flows using market interest rates at December 31, 2018; · for some types of loans granted by government institutions for social development purposes, for which fair value cannot be reliably calculated, the carrying amount has been used. Lastly, for the majority of financial assets, their carrying amount constitutes a reasonable approximation of their fair value The fair value measurement of the financial instruments of the Group is classified according to the three levels set out in IFRS 7. In particular, the fair value · Level 1: quoted prices in active market; · Level 2: prices calculated using observable market inputs; · Level 3: prices calculated using inputs that are not based on observable market data. Supplementary disclosure on financial instruments required by IFRS 7 and the schedules of gains and losses are provided in the tables below. In particular: · the assets and liabilities at December 31, 2018 are presented based on the categories established by IFRS 9 (adopted commencing on January 1, 2018); · classification of the financial assets and liabilities is presented at the date of first application of IFRS 9 (January 1, 2018); · the assets and liabilities at December 31, 2017 are presented based on the categories established in IAS 39. Key for IFRS 9 categories Acronym Financial assets measured at: Amortized Cost AC Fair Value Through Other Comprehensive Income FVTOCI Fair Value Through Profit or Loss FVTPL Financial liabilities measured at: Amortized Cost AC Fair Value Through Profit or Loss FVTPL Hedging Derivatives HD Not applicable n.a. Key for IAS 39 categories Acronym Loans and Receivables LaR Financial assets Held-to-Maturity HtM Available-for-Sale AfS Financial Assets/Liabilities Held for Trading FAHfT/FLHfT Financial Liabilities at Amortized Cost FLAC Hedging Derivatives HD Not applicable n.a. Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2018 Amounts recognized in the financial statements Levels of hierarchy or of IFRS 9 Note Carrying Amortized Fair value Fair value Level 1 Level 2 Level 3 Amounts Fair Value at (millions of euros) Assets Financial assets measured at ammortized cost AC 5,800 5,800 — — 5,800 Non-current Receivables from employees 9 43 43 Other financial receivables 9 — — Miscellaneous receivables ( non-current) 10 326 326 Current Assets Receivables from employees 9 14 14 Other short-term financial receivables 9 2 2 Cash and cash equivalents 9 1,917 1,917 Trade receivables 13 3,327 3,327 Other receivables (current) 13 125 125 Contract Assets 46 46 Financial assets measured at fair value through other comprehensive income FTVOCI 994 — 994 — 994 Non-current Other investments 9 49 49 3 16 30 Securities other than investments — — — Current Assets 9 Trade receivables — Securities other than investments 945 945 945 Financial assets measured at fair value through profit or loss FVTPL 9 200 — — 200 200 Non-current Non-hedging 9 7 7 7 — Current Assets Securities other than investments: 181 181 181 Non-hedging 12 12 12 Hedging derivatives HD 9 1,732 — 1,659 73 1,732 Non-current Hedging derivatives 9 1,490 1,438 52 1,490 — Current Assets Hedging derivatives 9 242 221 21 242 — Financial receivables for lease contracts n.a. 9 124 124 124 Non-current 8 54 54 Current Assets 70 70 Total 8,850 5,800 2,653 273 1,129 1,767 30 124 8,850 The financial instruments belonging to hierarchy level 3 of fair value are represented by the following Other investments recognized as Non-current · Northgate CommsTech Innovations Partners L.P. · Banca UBAE · Istituto Europeo di Oncologia · Other minor companies. Northgate CommsTech Innovations Partners L.P. was measured based on the latest available Net Asset Value reported by the fund manager. Banca UBAE, Istituto Europeo di Oncologia and the other minor companies were measured on the basis of an analysis, deemed reliable, of the financial elements recognized. The profit/(loss) recognized in Other components of the Consolidated Statements of Comprehensive Income were recognized within the scope of the Reserve for financial assets measured at fair value through other comprehensive income. Amounts recognized in the financial statements Levels of IFRS 9 Note Carrying amounts Amortized Fair value Fair value Level 1 Level 2 Amounts Fair Value at (millions of euros) Liabilities Financial liabilities measured at ammortized cost AC/HD 32,064 32,064 32,123 Non-current Financial payables 16 21,894 21,894 — Current liabilities Financial payables 16 5,367 5,367 — Trade and miscellaneous payables and other current liabilities 23 4,610 4,610 Contract Liabilities 193 193 Financial liabilities measured at fair value through profit or loss FVTPL 2 2 2 Non-current Non-hedging 2 2 2 Current liabilities Non-hedging — — — Hedging derivatives HD 1,761 1,761 — 1,761 Non-current Hedging derivatives 16 1,423 1,423 — 1,423 Current liabilities Hedging derivatives 16 338 338 — 338 Finance lease liabilities n.a. 1,948 1,948 3,359 Non-current 16 1,740 1,740 Current liabilities 16 208 208 Total 35,775 32,064 1,761 2 — 1,763 1,948 37,245 Classification of financial assets and liabilities at the date of first application of IFRS 9 (1/1/2018) (*) The following tables state the financial assets and liabilities at 1/1/2018 broken down by: · new category determined in compliance with IFRS 9. · original category determined in compliance with IAS 39; IFRS 9 Note Carrying amounts IAS 39 Carrying amounts (millions of euros) Assets Financial assets measured at ammortized cost AC 7,802 LaR 7,914 Non-current Receivables from employees 9 47 47 Other financial receivables 9 150 150 Miscellaneous receivables ( non-current) 10 371 371 Current Assets Receivables from employees 9 16 16 Other short-term financial receivables 9 101 101 Cash and cash equivalents 9 3,575 3,575 Trade receivables 13 3,353 3,500 Other receivables (current) 13 154 154 Contract Assets 13 35 — Financial assets measured at fair value through other comprehensive income FVTOCI 1,044 AfS 1,044 Non-current Other investments 8 51 51 Securities other than investments 9 — — Current Assets Trade receivables 13 — — Securities other than investments 9 993 993 Financial assets measured at fair value through profit or loss FVTPL 22 FAHfT 22 Non-current Non-hedging 9 7 7 Current Assets Securities other than investments 9 — — Non-hedging 9 15 15 Hedging derivatives HD 1,755 HD 1,755 Non-current Hedging derivatives 9 1,495 1,495 Current Assets Hedging derivatives 9 260 260 Financial receivables for lease contracts n.a. 114 n.a. 114 Non-current 9 69 69 Current Assets 9 45 45 Total 10,737 10,849 (*) For additional details, please refer to what is explained in the Note “Accounting standards” and in the respective notes. IFRS 9 Note Carrying amounts IAS 39 Carrying amounts (millions of euros) Liabilities Financial liabilities measured at ammortized cost AC/HD 33,389 FLAC/HD 33,355 Non-current Financial payables 16 23,940 23,940 Current liabilities Financial payables 16 4,500 4,500 Trade and miscellaneous payables and other current liabilities 4,915 4,915 Contract Liabilities 22 34 — Financial liabilities measured at fair value through profit or loss FVTPL 22 9 FLHfT 9 Non-current Non-hedging 16 5 5 Current liabilities Non-hedging 16 4 4 Hedging derivatives HD 1,985 1,985 Non-current Hedging derivatives 16 1,914 1,914 Current liabilities Hedging derivatives 16 71 71 Finance lease liabilities n.a. 2,430 2,430 Non-current 2,249 2,249 Current liabilities 181 181 Total 37,813 37,779 (*) For additional details, please refer to what is explained in the Note “Accounting standards” and in the respective notes. Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2017 Amounts recognized in the financial Levels of IAS 39 Note Carrying Amortized Cost Fair value Fair value Level 1 Level 2 Amounts Fair Value at (millions of euros) Assets Loans and receivables LaR 7,914 7,913 1 7,914 Non-current Receivables from employees 9 47 47 Other financial receivables 9 150 150 Miscellaneous receivables (non-current) 10 371 370 1 Current Assets Receivables from employees 9 16 16 Other short-term financial receivables 9 101 101 Cash and cash equivalents 9 3,575 3,575 Trade receivables 13 3,500 3,500 Other receivables (current) 13 154 154 Available-for-sale Afs 1,044 28 1,016 1,044 Non-current Other investments 8 51 28 23 3 20 Securities other than investments 9 — — — Current Assets Securities other than investments available for sale 9 993 993 993 Financial assets at fair value through profit or loss held for trading FAHfT 22 22 22 Non-current Non-hedging 9 7 7 7 Current Assets Non-hedging 9 15 15 15 Securities other than investments: held for trading — — — Hedging derivatives HD 1,755 1,713 42 1,755 Non-current Hedging derivatives 9 1,495 1,474 21 1,495 Current Assets Hedging derivatives 9 260 239 21 260 Financial receivables for lease contracts n.a. 114 114 114 Non-current 9 69 69 Current Assets 9 45 45 Total 10,849 7,913 29 2,729 64 996 1,797 114 10,849 Amounts recognized in the financial Levels of ifrs 9 Note Carrying Amortized Cost Fair value Fair value Level 1 Level 2 Amounts Fair Value at (millions of euros) Liabilities Financial liabilities at amortized cost FLAC/HD 33,355 33,355 36,023 Non-current Financial payables 16 23,940 23,940 — Current liabilities Financial payables 16 4,500 4,500 — Trade and miscellaneous payables and other current liabilities 22 4,915 4,915 Financial liabilities at fair value through profit or loss held for trading FLHfT 9 9 9 Non-current Non-hedging 16 5 5 5 Current liabilities Non-hedging 16 4 4 4 Hedging derivatives HD 1,985 1,966 19 1,985 Non-current Hedging derivatives 16 1,914 1,895 19 1,914 Current liabilities Hedging derivatives 16 71 71 — 71 Finance lease liabilities n.a. 2,430 2,430 3,604 Non-current 16 2,249 2,249 Current liabilities 16 181 181 Total 37,779 33,355 — 1,966 28 — 1,994 2,430 41,621 Gains and losses by IFRS 9 category—Year 2018 IFRS 9 Net gains/ of which (millions of euros) Assets measured at amortized cost AC (540 ) 40 Assets and liabilities measured at fair value through profit or loss FVTPL 25 Assets measured at fair value recognized in the statements of comprehensive income FVTOCI 7 Liabilities measured at amortized cost AC (1,160 ) 1,178 Total (1,668 ) 1,218 (1) Of which 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss. Gains and losses by IAS 39 category—Year 2017 IAS 39 Net gains/(losses) of which (millions of euros) Loans and Receivables LaR (356 ) 118 Available-for-Sale AfS 8 Financial Assets/Liabilities Held for Trading FAHfT/FLHfT (19 ) Financial Liabilities at Amortized Cost FLAC (1,338 ) 1,376 Total (1,705 ) 1,494 (1) Of which, 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss.

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Employee Benefits	NOTE 20—EMPLOYEE BENEFITS Employee benefits decreased by 214 million euros compared to December 31, 2017 and are summarized as follows: As of Increases/ Present Decrease Exchange As of (millions of euros) Provision for employee severance indemnities (A) 1,009 (51 ) 958 Provision for pension plans and other 28 (2 ) (1 ) (3 ) 22 Provision for termination benefit incentives and Corporate restructuring expenses 348 689 (177 ) (7 ) 853 Total other provisions for employee benefits (B) 376 687 (178 ) (10 ) 875 Total (A+B) 1,385 687 (229 ) (10 ) 1,833 Of which: Non-current 1,355 1,736 Current portion (*) 30 97 (*) The current portion refers only to Other provisions for employee benefits. As of Increases/ Decrease Exchange As of (millions of euros) Provision for employee severance indemnities (A) 958 (8 ) (63 ) — 887 Provision for pension plans and other 22 3 (3 ) 22 Provision for termination benefit incentives and Corporate restructuring expenses 853 205 (348 ) 710 Total other provisions for employee benefits (B) 875 208 (351 ) — 732 Total (A+B) 1,833 200 (414 ) — 1,619 Of which: Non-current 1,736 1,567 Current portion (*) 97 52 (*) The current portion refers only to Other provisions for employee benefits. The Provision for employee severance indemnities only refers to Italian companies and decreased overall by 71 million euros. The reduction of 63 million euros under “Decreases” refers to ordinary advances and uses paid during the year to employees who terminated employment. The lower cost of the item “increases/discounting” mainly includes the following: Year ended December 31, 2018 2017 2016 (millions of euros) (Positive)/negative effect of curtailment — (6 ) — Current service cost (*) — — — Finance expenses 13 14 16 Net actuarial (gains) losses for the year (23 ) (8 ) 33 Total (10 ) — 49 Effective return on plan assets there are no assets servicing the plan (*) The portions intended for the INPS Treasury Fund or for the supplementary pension funds have been recorded under “Employee benefits expenses” and “Social security expenses”. The latter account is used only for the severance indemnity expenses of companies with less than 50 employees. Net actuarial gains at December 31, 2018 amounted to 23 million euros (net actuarial gains of 8 million euros in 2017). They are basically associated with the balance of the change in the discount rate, which was 1.57% as compared to the 1.30% used at December 31, 2017, and with the turn-over effect related to the company restructuring plans already started in the previous year. The inflation rate was 1.50%, unchanged compared to 2017. According to national law, the amount of provision for employee severance indemnities to which each employee is entitled depends on the period of service and must be paid when the employee leaves the company. The amount of severance indemnity due upon termination of employment is calculated on the basis of the period of employment and the taxable compensation of each employee. This liability is adjusted annually based on the official cost-of-living legally-set Under the regulations introduced by Italian Legislative Decree 252/2005 and Law no. 296/2006 with which, for companies with at least 50 employees, the severance indemnities accruing from 2007 are assigned, as elected by the employees, to either the INPS Treasury Fund or to supplementary pension funds and take the form of a “defined contribution plan”. However, for all companies, the revaluations of the amounts in the provision for employee severance indemnities existing at the election date, and also the amounts accrued and not assigned to supplementary pension plans for companies with less than 50 employees, are retained in the provision for employee severance indemnities. In accordance with IAS 19, the provision has been recognized as a “defined benefit plan”. In application of IAS 19, the employee severance indemnities have been calculated using the “Projected Unit Credit Method” as follows: · the future possible benefits which could be paid to each employee registered in the program in the event of retirement, death, disability, resignation etc. have been projected on the basis of a series of financial assumptions (cost-of-living · the average present value of future benefits has been calculated, at the measurement date, on the basis of the annual interest rate adopted and the probability that each benefit actually has to be paid; · the liability of each company concerned has been calculated as the average present value of future benefits that will be generated by the existing provision at the measurement date, without considering any future accruals (for companies with at least 50 employees during the year 2006) or by identifying the amount of the average present value of future benefits which refer to the past service already accrued by the employee in the company at the measurement date (for the others), i.e. adopting the “service pro-rate”. The following assumptions have been made: FINANCIAL ASSUMPTIONS Executives Non-executives Inflation rate 1.50% per annum 1.50% per annum Discount rate 1.57% per annum 1.57% per annum Employee severance indemnities annual increase rate 2.625% per annum 2.625% per annum Annual real wage growth: equal to or less than 40 years of age 1.0% per annum 1.0% per annum over 40 but equal to or less than 55 years of age 0.5% per annum 0.5% per annum over 55 years of age 0.0% per annum 0.0% per annum DEMOGRAPHIC ASSUMPTIONS Executives Non-executives Probability of death RG 48 mortality tables published by “Ragioneria RG 48 mortality tables published by “Ragioneria Probability of disability INPS tables divided by age and sex INPS tables divided by age and sex Probability of resignation: up to 40 years of age 6.50% 1.00% From 41 to 50 years of age 2.00% 0.50% From 51 to 59 years of age 2.00% 0.50% From 60 to 64 years of age 20.00% 6.50% Over 65 years of age None None Probability of retirement Reaching the minimum requisites established by the Obligatory General Insurance updated on the basis of Italian Law 214 of December 22, 2011 Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70% 1.5% per annum 1.5% per annum The adoption of the above assumptions resulted in a liability for employee severance indemnities at December 31, 2018 of 887 million euros (958 million euros at the end of 2017). Reported below is a sensitivity analysis for each significant actuarial assumption adopted to calculate the liability as at year end, showing how the liability would have been affected by changes in the relevant actuarial assumption that were reasonably possible at that date, stated in amounts. The weighted average duration of the obligation is 11.9 years. CHANGES IN ASSUMPTIONS Amounts (millions of euros) Turnover rate: +0.25 p.p. (2 ) - 0.25 p.p. 2 Annual inflation rate: +0.25 p.p. 19 - 0.25 p.p. (18 ) Annual discount rate: +0.25 p.p. (25 ) - 0.25 p.p. 26 The Provision for pension and other plans amounted to 22 million euros at December 31, 2018 (22 million euros at December 31, 2017) and mainly represented pension plans in place at foreign companies of the Group. The provision for termination benefit incentives and corporate restructuring showed a drop of 143 million euros mainly as the balance between the drawdowns (348 million euros) for personnel leaving the Group resulting from the staff leaving incentive plans already allocated in previous years and adjustment of the provision (204 million euros); Specifically, a plan was launched at the end of 2017 for executive and non-executive 4(1–7-ter) take-up

Provisions

Provisions	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Provisions	NOTE 21—PROVISIONS Provisions increased by 103 million euros compared to December 31, 2017. The figure breaks down as follows: As of Increase Used Used Exchange As of (millions of euros) Provision for taxation and tax risks 93 30 — (21 ) 2 104 Provision for restoration costs 350 10 — (13 ) 1 348 Provision for legal disputes 605 244 — (134 ) (6 ) 709 Provision for commercial risks 28 18 — (12 ) (1 ) 33 Provision for risks and charges on investments and corporate-related transactions 32 — (5 ) (6 ) — 21 Other provisions 9 3 (4 ) (8 ) 5 5 Total 1,117 305 (9 ) (194 ) 1 1,220 Of which: Non-current 825 876 Current portion 292 344 The non-current re-measuring The provision for taxation and tax risks rose by 11 million euros compared to December 31, 2017. The end of year balance reflects provisions and uses mainly carried out by the Brazil Business Unit and the Domestic Business Unit. The provision for restoration costs related to the provision for restoration of leased real estate and sites used for mobile telephony and the dismantling of tangible assets (specifically: batteries and wooden poles) of the companies of the Domestic Business Unit (341 million euros) and of the Brazil Business Unit (7 million euros). The provision for legal disputes included the provision for litigation with employees, social security entities, regulatory authorities and other counterparties. The balance of the provision at December 31, 2018 is attributable for 578 million euros to the Domestic Business Unit, including the provision associated with the sanction connected with the Golden Power case, and the Brazil Business Unit (131 million euros). Draw downs mainly related to the Brazil Business Unit (86 million euros) and the Domestic Business Unit (48 million euros) and were essentially related to settlement agreements reached. The provision for commercial risks, basically unchanged compared to the previous year, relates to the Domestic Business Unit. The provision for risks and charges on investments and corporate-related transactions, decreased by 11 million euros, following use by the Parent TIM S.p.A.. Other provisions showed no significant changes compared to December 31, 2017 and mainly refer to companies belonging to the Domestic Business Unit.

Miscellaneous Payables and Othe

Miscellaneous Payables and Other Non-Current Liabilities	12 Months Ended
	Dec. 31, 2018
Investments accounted for using equity method [abstract]
Miscellaneous Payables and Other Non-Current Liabilities	NOTE 22—MISCELLANEOUS PAYABLES AND OTHER NON—CURRENT LIABILITIES Miscellaneous payables and other non-current As of December 31, 2018 2017 (millions of euros) Miscellaneous payables ( non-current) Payables to social security agencies 275 238 Income tax payables (*) 42 45 Other liabilities 1,919 16 (a) 2,236 299 Other non current liabilities Deferred revenues from contract with customers (Contract liabilities) 109 Other deferred revenue and income 595 Capital grants 357 391 Deferred income 988 (b ) 1,061 1,379 Miscellaneous payables and other non-current (a+b ) 3,297 1,678 (*) Analyzed in the Note “Income tax expense”. The impact caused by the adoption of IFRS 15 are summarized as below: New IFRS Adoption As of IFRS 15 IFRS 15 As of (millions of euros) Miscellaneous payables (non-current) Payables to social security agencies 238 — — 238 Income tax payables (*) 45 — — 45 Other liabilities 16 — — 16 299 — — 299 Other non current liabilities Deferred revenues from contract with customers (Contract liabilities) — 350 (251 ) 99 Other deferred revenue and income — 638 638 Capital grants 391 — 391 Deferred income 988 (988 ) — — 1,379 — (251 ) 1,128 Miscellaneous payables and other non-current 1,678 — (251 ) 1,427 For more detailed information on the impacts caused by the adoption of IFRS 15, please refer to the Note “Accounting Standards”. Miscellaneous payables (non-current) · payables to social security agencies 1-7ter, Details are as follows: As of December 31, 2018 2017 (millions of euros) Non-current Due from 2 to 5 years after the end of the reporting period 259 226 Due beyond 5 years after the end of the reporting period 16 12 275 238 Current payables 173 58 Total 448 296 · other payables non-current · 19 million euros by September 2019; · 110 million euros by September 2020; · 55 million euros by September 2021; · 1,738 million euros by September 2022. Other non-current · Contract liabilities · deferred revenues for activation and installation fees charged on new TIM S.p.A. customer contracts (20 million euros at December 31, 2018): to this regard, under previous accounting policies, revenues for activation and installation were deferred over the expected duration of the customer relationship. IFRS 15 instead requires that such revenues—given that they are not allocated to separate performance obligations—be allocated to other contract obligations and recognized throughout the period of performance of the contract; · deferred revenues for TIM S.p.A. network access fees (32 million euros at December 31, 2018); · deferred revenues for TIM S.p.A. subscription fees and rent and maintenance (49 million euros at December 31, 2018). · Other deferred revenue non-current · Capital grants, Ultra-Broadband-UBB Broadband-BB · Deferred income: · the effect of the deferral of revenues from the activation of the telephone service of TIM S.p.A.; · the non-current · the deferral of revenues from the sale of transmission capacity.

Trade and Miscellaneous Payable

Trade and Miscellaneous Payables and Other Current Liabilities	12 Months Ended
	Dec. 31, 2018
Investments accounted for using equity method [abstract]
Trade and Miscellaneous Payables and Other Current Liabilities	NOTE 23—TRADE AND MISCELLANEOUS PAYABLES AND OTHER CURRENT LIABILITIES Trade and miscellaneous payables and other current liabilities fell by 619 million euros compared to December 31, 2017 and were broken down as follows: As of December 31, 2018 2017 Of which Of which (millions of euros) Payables on construction work (A) 18 19 Trade payables: Payables to suppliers 4,090 4,090 4,262 4,262 Payables to other telecommunication operators 380 380 383 383 (B) 4,470 4,470 4,645 4,645 Tax payables (C) 262 584 Miscellaneous payables: Payables for employee compensation 151 245 Payables to social security agencies 338 202 Payables for “TLC operating fee” 15 15 Dividends approved, but not yet paid to shareholders 35 35 19 19 Other 164 105 223 174 Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year 52 97 Provisions for risks and charges for the current portion expected to be settled within 1 year 344 292 (D) 1,099 140 1,093 193 Other current liabilities Liabilities from contract with customers (Contract liabilities) 931 193 Customer-related items 602 77 Advances received 69 Other deferred revenue and income 121 Trade and miscellaneous deferred income 508 (E) 1,052 193 1,179 77 Trade and miscellaneous payables and other current liabilities (A+B+C+E ) 6,901 4,803 7,520 4,915 Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”. The impacts caused by the adoption of IFRS 15 are summarized below: As of 2017 New IFRS adoption As of 2018 IFRS 15 IFRS 15 (millions of euros) Payables on construction work (A) 19 — — 19 Trade payables: Payables to suppliers 4,262 — — 4,262 Payables to other telecommunication operators 383 — — 383 (B) 4,645 — — 4,645 Tax payables (C) 584 584 Miscellaneous payables: Payables for employee compensation 245 — — 245 Payables to social security agencies 202 — — 202 Payables for “TLC operating fee” 15 — — 15 Dividends approved, but not yet paid to shareholders 19 — — 19 Other 223 — — 223 Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year 97 — — 97 Provisions for risks and charges for the current portion expected to be settled within 1 year 292 — — 292 (D) 1,093 — — 1,093 Other current liabilities Liabilities from contract with customers (Contract liabilities) — 1,033 (113 ) 920 Customer-related items 602 (602 ) — — Advances received 69 (69 ) — — Other deferred revenue and income 146 — 146 Trade and miscellaneous deferred income 508 (508 ) — — (E) 1,179 — (113 ) 1,066 Trade and miscellaneous payables and other current liabilities (A+B+C+D+E) 7,520 — (113 ) 7,407 For more detailed information on the impacts caused by the adoption of IFRS 15, please refer to the Note “Accounting Standards”. Trade payables amounting to 4,470 million euros (4,645 million euros at December 31, 2017), mainly refer to TIM S.p.A. (2,925 million euros) and to the companies of the Brazil Business Unit (1,044 million euros); as regards TIM S.p.A., the reduction in trade payables reflects the trend in payments of bills payable. Tax payables are equal to 262 million euros and refer to both tax payables of the Brazil Business Unit (139 million euros) and TIM S.p.A. payables relating to: withholding tax payables to the tax authorities as withholding agent (69 million euros), payables for government concession tax (21 million euros) and VAT payable (12 million euros). Miscellaneous payables include, among others, the amount due to INPS for the application of the 2015 arrangements relating to Article 4 paragraphs 1-7ter, non-current Other current liabilities amounted to 1,052 million euros (1,179 million euros at December 31, 2017). They break down as follows: · Liabilities from customer contracts (Contract liabilities), totaling 931 million euros. The item emerged following the application of IFRS 15 to show the liabilities with customers associated with the Company’s obligations to transfer goods and services for which it has received a consideration. Liabilities with customers are shown below, which generally have a maturity within 12 months; therefore, the balance as at December 31, 2017 was substantially reversed by December 31, 2018 while the balance as at December 31, 2018 is expected to be reversed to the income statement on average within the following year. In particular: · contract liabilities, equal to 119 million euros and recognized following the adoption of IFRS 15 due to contracts having performance obligations with different revenue recognition time schedules (such as bundled goods and services), where the services (recognized based on actual consumption) are offered to the customer at a discounted price. The increase of the year (84 million euros) is mainly connected to the start-up · customer-related items, equal to 391 million euros; the item includes trade payables following contractual relationships, such as the payable for prepaid traffic and the subscription charges charged in advance; the decrease posted during the year is mainly attributable to the changes in the commercial offers, with less recourse to the advance of fees and charges, also as a result of changes in the billing procedures; · progress payments and advances equal to 121 million euros relating to trade payables following prepayments, such as deposits made by subscribers for telephone calls; · deferred revenues from customer contracts, equal to 300 million euros essentially include: – deferred revenues for the Parent interconnection charges (121 million euros); – deferred revenues for the Parent rent and maintenance (97 million euros); – deferred revenues for the Parent activation and installation fees charged on new customer contracts (59 million euros): to this regard, under previous accounting policies, revenues for activation and installation were deferred over the expected duration of the customer relationship. IFRS 15 requires that such revenues—given that they are not allocated to separate performance obligations—are allocated to other contract obligations, recognized on the basis of their performance. · Other deferred revenue and income amounted to 121 million euros. At December 31, 2017, other deferred revenue and income was included in Trade and miscellaneous deferred income and referred mainly to deferred revenues from sales of transmission capacity and deferred revenues from real estate lease agreements (lease operating assets). · Trade and miscellaneous deferred income: no longer present at December 31, 2018 as included in the aforementioned items. At December 31, 2017, these referred mainly to the Parent and included deferred interconnection charges, revenue for the activation of the telephone service, and rent and maintenance, traffic and outsourcing charges.

Contingent Liabilities, Other I

Contingent Liabilities, Other Information, Commitments and Guarantees	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Contingent Liabilities, Other Information, Commitments and Guarantees	NOTE 24—CONTINGENT LIABILITIES, OTHER INFORMATION, COMMITMENTS AND GUARANTEES A description is provided below of the most significant judicial, arbitration and tax disputes in which TIM Group companies are involved as at December 31, 2018, as well as those that came to an end during the period. The TIM Group has provisioned 508 million euros for those disputes described below where the risk of losing the case has been considered probable. It should be noted that for some disputes described below, on the basis of the information available at the closing date of the Annual Report and with particular reference to the complexity of the proceedings, to their progress, and to elements of uncertainty of a technical-trial nature, it was not possible to make a reliable estimate of the size and/or times of possible payments, if any. Moreover, in those cases in which disclosure of information on a dispute could seriously jeopardize the position of TIM or its subsidiaries, only the general nature of the dispute is described. In relation to the proceedings with the Italian Competition Authority, based on Article 15, paragraph 1 of Italian Law 287/1990 (“Antitrust regulations”), the Italian Antitrust Authority has the right to impose an administrative sanction calculated on the turnover of the Group in cases of serious breaches. A) SIGNIFICANT DISPUTES AND PENDING LEGAL ACTIONS International tax and regulatory disputes As at December 31, 2018, the Brazil Business Unit is involved in tax and regulatory disputes, the outcome of which is estimated as a possible loss amounting to 16.5 billion reais. The main types of disputes involved are listed below, classified on the basis of the taxation level to which they relate. Federal Taxes On March 22, 2011, TIM Celular S.A. (a company incorporated into TIM S.A. starting from October 31, 2018) was served notice of a tax assessment issued by the Federal Tax Authorities of Brazil for a total sum of 1,265 million reais as of the date of the notification, including fines and interest, as a result of the completion of a tax investigation of financial years 2006, 2007, 2008 and 2009 for the companies TIM Nordeste Telecomunicações S.A. and TIM Nordeste S.A. (formerly Maxitel), companies which have been progressively incorporated into TIM Celular with the aim of rationalizing the corporate structure in Brazil. The assessment notice includes various adjustments; the main claims may be summarized as follows: · non-recognition · non-recognition tax-deductibility · denial of certain tax offsets; and · denial of the SUDENE territorial tax benefit due to alleged irregularities in the management and reporting of the benefit. The adjustments included in the assessment notice were challenged by TIM Celular, in administrative proceedings, through the presentation of its first objections on April 20, 2011. On April 20, 2012, TIM Celular received notification of the decision of the administrative court of first instance which confirmed the findings set out in the assessment notice; TIM Celular promptly filed an appeal against this decision on May 21, 2012. The Company, as confirmed by fitting legal opinions, believes it is unlikely that the company could suffer any negative consequences in relation to these matters. At the federal level, disputes involving the following are also noted: · use of tax losses; · tax deductibility of the amortization of goodwill; · taxation on income from certain types of exchange movements; · withholding of taxes on certain types of payments made abroad (for example, payments for international roaming); and · offsetting between debt taxes and credit positions of group companies. The overall risk involved in connection with these cases that is considered possible amounts to 4.0 billion reais as of December 31, 2018. State Taxes In connection with state taxes, there are numerous disputes regarding ICMS, and in particular: · disputes concerning the reduction of the tax base through discounts granted to customers: in addition to disputes regarding the use of tax credits declared by group companies against the repayment of telephone terminals on loan, and following the detection of subscription fraud perpetrated against the companies, subjecting certain types of fees to ICMS, accrued in favor of group companies and classified by them as fees for services other than telecommunications; · disputes concerning the use of the “PRO-DF” · disputes relating to the use of credits for ICMS, recognized by Group companies as a result of the acquisition of tangible assets, and in relation to the supply of electricity to the Companies, as well as in the application of the provisions on acting as a withholding agent; and · penalties imposed on group companies for irregularities in tax return compliance. In February 2018 the State of São Paulo notified two tax assessments regarding ICMS to TIM Celular, for a total amount of 679 million reais (at the date of the assessment, including fines and interest). The first assessment (344 million reais) regarded a challenge of ICMS credits in relation to acting as a withholding agent, applicable when equipment is bought and distributed in different States. The second assessment (335 million reais) challenged ICMS credits deriving from the “special credit” recognized by the company to its prepaid customers, against subsequent top-ups. In June 2018 the State of São Paulo notified TIM Celular of two further tax assessments, again relating to ICMS, for a total amount of 369 million reais (as of the date of the assessment, including fines and interest). This assessment relates to ICMS credits deriving from the “special credit” recognized by TIM Celular (incorporated by TIM S/A to its prepaid customers against subsequent top-ups, , Overall, the risk for these cases that considered possible amounts to 8.9 billion reais as of December 31, 2018. Municipal Taxes Among disputes classified with a “possible” degree of risk, there are some relating to municipal taxes for a total amounting to around 0.7 billion reais as of December 31, 2018. FUST and FUNTTEL The main complaints concerning the contributions to the regulatory body (Anatel), and in particular in terms of FUST and FUNTTEL, concern the subjection of revenues from interconnection to these withdrawals. Altogether the risk for such cases, considered possible, amounts to 2.9 billion reais as of December 31, 2018. Exclusion of ICMS from the PIS/COFINS tax base In March 2017, the Supreme Federal Court of Brazil recognized the inclusion of ICMS in the calculation of the PIS/COFINS contribution as unconstitutional. TIM Participações, through its subsidiary company TIM S.A. (previously named “Intelig Telecomunicações Ltda”), as the incorporating company of TIM Celular S.A., as well as other companies belonging in the past to the Tim Brasil Group, that submitted applications of the same nature, have been involved in legal proceedings since 2006, requesting reimbursements within the statutory period of five years (from 2001). Taking into account the ruling of the aforementioned Supreme Court, in favor of taxpayers, TIM Celular with the approval of its legal advisors, decided not to include ICMS when calculating the PIS/COFINS contribution, beginning in April of 2017. For some of these proceedings, the Court of Appeal has already given a favorable decision, in line with that of the Supreme Court, and the appeals presented by the tax authorities were rejected, on the basis of the same arguments. Despite the tax authorities representative’s request to limit the retroactive nature of the decisions, the Company—again with the approval of its legal advisors, believes that the decisions will not affect the rights claimed through legal proceedings. The Company has estimated that at the end of the proceedings, after the definitive rulings and completion of consequential activities, the receivables would amount to approximately 3.3 billion reais, of which 1.9 billion reais from tax, and 1.4 billion reais from legal revaluation. Moreover, in respect of this potential tax credit, in the course of 2018, following a definitive and indisputable decision, the Company recognized a receivable of to 353 million reais. Administrative offense charge pursuant to Legislative Decree 231/2001 for the so-called In December 2008 TIM received notification of the application for its committal for trial for the administrative offense specified in articles 21 and 25, subsections 2 and 4, of legislative decree no. 231/2001 in relation to the affairs that involved several former employees of the Security function and former collaborators of the Company charged among other things with offences involving corruption of public officials, with the object of acquiring information from confidential files. In May 2010 TIM ceased being a defendant in the criminal trial, after the Judge for the Preliminary Hearing approved the motion for settlement of the proceedings (plea bargaining) presented by the Company. In the hearing before Section One of the Milan Court of Assizes, TIM acted in the dual role of civil party and civilly liable party. In fact, on the one hand it was admitted as civil party against all the defendants for all charges, and on the other it was also cited as the party with civil liability pursuant to article 2049 of the Italian Civil Code for the actions of the defendants in relation to 32 civil parties. Telecom Italia Latam and Telecom Italia Audit and Compliance Services (now incorporated into TIM) also participated in the hearing as civil parties, having filed appearances since the Preliminary Hearing and brought charges against the defendants for hacking. After the lengthy evidentiary hearings, 22 civil parties filed claims for compensation, including against TIM as civilly liable party, for over 60 million euros (of which over 42 million euros was requested by a single civil party). The Company itself, as civil party, also summarized its conclusions against the defendants, requesting that they be found liable for all the damages suffered as a result of the facts of the case. In February 2013, Section 1 of the Milan Court of Assizes issued the first instance judgment, sentencing the defendants to terms of imprisonment of between 7 years and 6 months and one year. The Court also recognized that there had been non-pecuniary non-pecuniary non-pecuniary In April 2018 the Supreme Court of Italy confirmed the convictions of the defendants and canceled the civil rulings, remanding the issue generically to the civil court, for a more careful assessment of the claims made, above all concerning the quantum of evidence. It also canceled and remanding the confiscation in favor of the State, which will have to be reassessed by a different section of the Milan Court of Assizes of Appeal. Golden Power Case In August 2017 the office of the Prime Minister initiated proceedings against TIM and Vivendi in order to verify the fact that TIM has an obligation to notify, pursuant to the Golden Power provisions, Vivendi’s acquisition of corporate control of TIM and the strategic assets it holds. In September 2017, the proceedings in question concluded by ascertaining that this obligation did exist for TIM effective as of May 4, 2017 the date of the shareholders’ meeting that renewed TIM’s corporate bodies. As a result of this decision of the office of the Prime Minister a new administrative procedure was started for the possible imposition on TIM of a pecuniary sanction according to the Golden Power provisions for non-compliance The Company believe it will be able to demonstrate that there were no obligations to notify with respect to Vivendi’s control and it has already submitted an extraordinary appeal to the President of the Republic to request the cancellation of the order of September 2017 and appealed the aforementioned fine and decision of May 8, 2018 requesting its precautionary suspension. With an order in July 2018, the Lazio TAR Moreover, the office of the Prime Minister exercised the special powers laid down by the Golden Power provision through two specific rulings in October and November 2017 with which it set specific prescriptions and conditions on TIM S.p.A. and the companies of the Telecom Italia Group, Telecom Italia Sparkle and Telsy Elettronica e Telecomunicazioni. The prescriptions, according to the Administrative Authority, are premised on understanding that these companies, in part, perform activities relevant for national security and as far as TIM is concerned to the fact that it owns the infrastructure and the systems used to provide access to end-users Any failure on the part of the recipients of the orders to execute the conditions and prescriptions is sanctioned in the same way as failure to notify significant acts for the purpose of the application of Golden Power provisions. The companies subject to the prescriptions are required to send periodic reports to a special Monitoring Committee established at the office of the Prime Minister in order to verify compliance with the aforementioned prescriptions. In December 2017 the Group sent the office of the Prime Minister the first compliance report outlining all the proposals and activities put in place to follow through with the prescriptions. TIM has also submitted an extraordinary appeal to the President of the Republic in this instance to request cancellation of the orders in question. The premise for exercising special powers was referred to the de facto control resulting from the outcome of the shareholders’ meeting of May 4, 2017 and to the direction and coordination of TIM by Vivendi. Both of these circumstances no longer apply, given: · at the shareholders’ meeting of May 4, 2018, the slate presented by the shareholders Elliott lnternational LP, Elliott Associates LP and The Liverpool Limited Partnership received the majority vote; · the Board of Directors was re-appointed · Vivendi no longer has direction and coordination, nor is there de facto Consequently, the Company requested the office of the Prime Minister to revoke the two decrees and communicated that, in the alternative, it was willing to cooperate with the office to define new measures applicable to TIM in view of the changed situation. In a decree of July 6, 2018, the Prime Minister’s Office did not consider an additional exercise of special powers, upholding the validity of the two Decrees already issued and rejecting the request to revoke them. The office of the Prime Minister reasoned that the new governance structures of the Company would be highly variable and thus would not allow for the rulings according to which the special powers were exercised to be overruled, save for the need to protect the public interest as regards network security and operation. The Company filed additional arguments against the Prime Minister’s resolution of July 6, 2018, rejecting the appeal for revocation presented by the Company on the outcome of their changed corporate governance situation in the previous appeals filed against the Prime Minister’s decrees of October 16 and November 2, 2017. Italian Competition Authority Case A428 At the conclusion of case A428, in May 2013, Italian Competition Authority AGCM imposed two administrative sanctions of 88,182,000 euros and 15,612,000 euros on TIM for abuse of its dominant position. The Company allegedly (i) hindered or delayed activation of access services requested by OLOs through unjustified and spurious refusals; (ii) offered its access services to final customers at economic and technical conditions that allegedly could not be matched by competitors purchasing wholesale access services from TIM itself, only in those geographic areas of the Country where disaggregated access services to the local network are available, and hence where other operators can compete more effectively with the Company. TIM contested the decision with the Lazio Regional Administrative Court (TAR) in July 2013, requesting suspension of payment of the fine. Specifically, TIM argued that: the right of defense in the proceedings had been infringed; that the alleged organizational arrangements disputed by the AGCM and purportedly at the basis of the infringement of provisioning processes for OLOs had been the subject of specific provisions by the Authority for the sector (AGCom); that a comparative analysis of internal/external provisioning processes in truth resulted in improved outcomes for the OLOs with respect to TIM’s Retail division and as such no form of inequality of treatment and/or opportunistic conduct by TIM existed; and (with reference to the second count of abuse) that the conduct challenged was not capable of squeezing the margins of the OLOs. In May 2014, the judgment of the Lazio TAR was published, rejecting TIM’s appeal and confirming the fines imposed in the original order challenged. In September 2014 the Company appealed against this decision. In May 2015, with the judgment no. 2497/15, the Council of State found the decision of the court of first instance did not present the deficiencies alleged by TIM and confirmed the AGCM ruling. The company had already proceeded to pay the fines and the accrued interest. In a decision notified in July 2015, AGCM started proceedings for non-compliance On January 13, 2017 TIM was notified of the conclusive assessment of the Italian Competition Authority (AGCM), acknowledging that TIM has fully complied with the judgment in proceedings A428 and that therefore the conditions did not exist for the imposition of any sanctions for non-compliance. AGCM also recognized that TIM’s behavior subsequent to the 2013 proceedings had been focused on continuous improvement of its performance in the supply of wholesale access services concerning not only the services which were the subject of the investigation, but also new, super-fast broadband access services. In assessing compliance, AGCM recognized the positive impact of the ongoing implementation of TIM’s New Equivalence Model (NME). The AGCM decision orders TIM to: (i) proceed with the implementation of the NME until its completion which is expected to be by April 30, 2017; (ii) to inform the Authority about the performance levels of the systems for providing wholesale access services and about the completion of the corresponding internal reorganization plan by the end of May 2017. The Company quickly complied with both orders, and AGCM communicated its satisfaction on August 9, 2017. Vodafone lodged an appeal with the Lazio Regional Administrative Court against the final decision in the proceedings for non-compliance Vodafone (A428) In August 2013, Vodafone, as incorporating company of operator Teletu, submitted to the Milan Court a huge claim for damages for presumed abusive and anticompetitive behavior (founded principally on ICA case A428) which TIM allegedly implemented in the period 2008-2013. The pecuniary claim was quantified by Vodafone as an estimated sum of between 876 million euros and 1,029 million euros. In particular, Vodafone alleged technical boycotting activities, with refusal to activate lines requested for Teletu customers (in the period from 2008 to the month of June 2013), together with the adoption of allegedly abusive price policies for wholesale network access services (period from 2008 to the month of June 2013). Furthermore, the other party complained of the presumed application of discounts to business customers capable of squeezing competitors’ margins (“margin squeeze”) and the carrying out of presumed illegal and anticompetitive winback practices (in the period from the second half of 2012 to the month of June 2013). TIM filed an appearance, challenging the claims made by the other party regarding the merits and the amount and making a counterclaim. Following the August 2016 decision by the Court of Cassation which confirmed that the Milan Court had jurisdiction to decide the dispute, the merits of the case will be decided at the hearing in December 2016. With a writ of summons dated May 28, 2015 before the Milan Court, Vodafone has advanced further claims for compensation, based on alleged practices similar to those ascertained by the ICA in case A428 and referring to alleged damages it suffered in the period July 2013-December 2014 (and therefore over a period of time subsequent to the period of the similar compensatory judgment mentioned above), for approximately 568.5 million euros. The case also contains a reservation of further damages to be quantified, during the proceedings, for the following periods, the claimant alleging that the presumed abusive conduct of TIM continued. TIM filed an appearance, challenging the claims made by the other party regarding the merits and the amount and making a counterclaim. In an order made on October 6, 2016, the judge accepted Vodafone’s petition to join the two A428 proceedings it had initiated. At the end of the reinstatement proceedings of December 21, the terms were established for the preliminary briefs and a hearing was fixed for July 11, 2017 for the admission of evidence. When the first preliminary brief was filed, following the favorable outcome for TIM of proceedings A428-C COLT TECHNOLOGY SERVICES With a writ of summons served in August 2015 before the Milan Court, operator Colt Technology Services claimed damages based on the decisive order in case A428, referring to alleged damages suffered over the period 2009/2011, due to the presumed inefficient and discriminatory conduct of TIM in the process of supplying wholesale services. The damage claim was quantified as 27 million euros in loss of profits for the alleged non-acquisition KPNQWest Italia S.p.A. With a writ of summons before the Rome Court, KPNQWest Italia sued TIM, claiming damages totaling 37 million euros for alleged abusive and anti- competitive conduct in the period 2009-2011, through technical boycotting (refusals to activate wholesale services—KOs); these claims were based on the content of the Italian Competition Authority decision in the A428 case. TIM filed an appearance, contesting all of the plaintiff’s allegations. The first hearing took place in May 2016. TELEUNIT With a writ of summons before the Rome Court, Teleunit claimed 35.4 million euros in compensation from TIM, based on the known decision of the Italian Competition Authority that settled the A428 case. Specifically, the other party complained that in the period 2009/2010 it had suffered abusive conduct on TIM’s part in the form of technical boycotting (refusals to activate network access services—KOs), and anticompetitive practices in the form of margin squeezing (excessive squeezing of discount margins, considered abusive inasmuch as it cannot be replicated by competitors). TIM filed an appearance, contesting all of the plaintiff’s allegations. With a writ of summons issued in October 2009 before the Milan Appeal Court, Teleunit asked that TIM alleged acts of abuse of its dominant position in the premium services market be ascertained. The plaintiff quantified its damages at a total of approximately 362 million euros. TIM filed an appearance, contesting the claims of the other party. After the ruling of January 2014 with which the Court of Appeal declared that it was not competent in this matter and referred the case to the Court, Teleunit reinstated the case before the Milan Court the following April. TIM filed an appearance in the reinstated proceedings challenging the plaintiff’s claims. In its May 2017 judgment, the Milan Court rejected Teleunit’s claim in its entirety, and ordered the company to pay the legal costs of the case. This judgment was appealed by Teleunit, in June 2017, before the Milan Court of Appeal. TIM filed an appeal challenging the arguments presented by the other party and asking that the judgment in the first instance be fully confirmed. In its March 2018 order, the Milan Court of Appeal declared Teleunit’s appeal (pursuant to Article 348-bis SIPORTAL The claim brought against TIM by Siportal is pending before the Rome Court. It claims a total of approximately 48.4 million euros for alleged damages due to the technical boycotting it suffered from 2009 to 2011 and the inertial effects of the abuse until 2015, with the loss of commercial partners and further customer acquisitions (the last damage item has been quantified as 25 million euros). The suit is based on the known Competition Authority ruling that settled case A428. The Company filed an appearance, rejecting all of the other party’s allegations. MC-Link MC-Link Italian Competition Authority Case I-761 With a ruling issued on July 10, 2013, AGCM (the Italian Competition Authority) included TIM in the investigation started in March 2013 into firms active in the fixed network maintenance sector. The investigation aims to establish if an agreement prohibited under article 101 of the Treaty on the Functioning of the European Union existed among firms. The proceedings were initiated after Wind filed two complaints in which the ICA was informed that, based on an invitation to bid for the assignment of network corrective maintenance services, it had encountered substantial uniformity of prices offered by the aforementioned enterprises and a significant difference from the offers submitted subsequently by other and different companies. The ICA alleged that TIM carried out a role of coordinating the other parts of the procedure, both during the formulation of the offers requested by Wind and in relation to the positions represented to communications regulator AGCom. TIM challenged these proceedings before the Administrative Court (TAR), sustaining that the ICA does not have competence in this matter. On July 7, 2014, the ICA announced the extension of the proceedings to confirm whether the Company, abusing its dominant position, put in place initiatives that might influence the conditions of the offer of accessory technical services when the offers of the maintenance businesses to Wind and Fastweb were being formulated. With the extension provision, the ICA has also extended the deadline for closing the proceedings from the original date of July 31, 2014 to July 31, 2015. This extension was also challenged before the Lazio Administrative Court (TAR) sustaining that the Italian Competition Authority does not have competence in this matter. In November 2014, for reasons of procedural economy and also convinced that it was acting legitimately, TIM presented to the Authority a proposal of undertakings in order to resolve the competition concerns subject of the investigation. In its resolution of December 19, 2014 the ICA considered that these undertakings were not manifestly groundless and later ordered their publication for the purposes of market testing. On March 25, 2015, the ICA definitively rejected the aforesaid undertakings, considering them not suitable for removing the anticompetitive aspects investigated. On July 21, 2015 the Communication of the Results of the Investigation was served on the parties to the proceedings, in which the Offices of ICA expressed their position in the sense of (i) archiving the complaints regarding the abuse of dominant position and (ii) confirming, instead, that there exists between TIM and the maintenance firms an agreement to coordinate the economic offers drawn up for Wind and Fastweb, and to prevent the unbundled supply of the ancillary technical services. On December 16, 2015, the final order was issued, confirming the conclusions of the Communication of the Results of the Investigation, sustaining that, between 2012 and 2013, there existed an agreement that restricted competition, and as a result imposed on the Company a fine of 21.5 million euros. In March 2016, the Company payed it. The relevant market is the corrective maintenance (assurance) market and, more precisely, the market for troubleshooting the TIM LLU lines. The purpose of the conduct maintained by the Company and the network firms would have been to limit competition and prevent the evolution of forms of unbundled supply of ancillary technical services. TIM appealed the order before the Lazio Regional Administrative Court. In judgment no. 09554/2016 issued in September 2016, the appeal was dismissed, and the Company appealed this decision to the Council of State. The appeal before the Council of State is still pending. WIND (I-761) With a writ of summons before the Court of Milan, Wind sought a 57 million euro compensation from TIM for damages arising from alleged anti-competitive conduct censured in the ICA case I-761 VODAFONE (I-761) With a writ of summons before the Milan Court, Vodafone sued TIM and other network companies, seeking compensation from the Company (and from the other network companies) of approximately 193 million euros for damages arising from alleged anti-competitive conduct censured in the ICA case I-761 More precisely, Vodafone alleges TIM breached competition rules in the wholesale markets for the access to its fixed network (LLU lines; Bitstream; WLR), through the abuse of a dominant position and an unlawful agreement with the maintenance companies to keep the monopoly on the offer of corrective maintenance services on its network. In particular, this restrictive agreement would have concerned the coordination, by the Company, of the financial conditions contained in the offers submitted by the aforementioned maintenance companies to the OLOs at artificially high prices, in order to give the impression that the unbundling of the service itself were not convenient. The Company filed an appearance, contesting all of the other party’s requests. The proceeding is still pending. Italian Competition Authority Case A514 In June 2017 the Italian Antitrust Authority (AGCM) started proceedings A514 against TIM, to ascertain a possible abuse of its dominant market position in breach of article 102 of the “Treaty on the Functioning of the European Union”. The proceedings were started based on complaints filed in May and June 2017, by Infratel, Enel, Open Fiber, Vodafone and Wind Tre, and concerns a presumed abuse of TIM’s dominant position in the market for wholesale access services and for retail services using the broadband and ultrabroadband fixed network. In particular, the AGCM hypothesized that TIM had adopted conduct aimed at: i) slowing and hindering the course of the Infratel tender processes so as to delay, or render less remunerative the entry of another operator in the wholesale market; ii) pre-emptively After the start of the proceedings, the Authority’s officials carried out an inspection at some of TIM’s offices in the month of July 2017. On November 2, 2017, TIM filed a defense in which, in support of the correctness of its actions, it challenged all the arguments that the behavior it had allegedly indulged in, and which are the object of the case, were actually unlawful. On February 14, 2018, AGCM resolved to extend the scope of the case to investigate further behavior concerning TIM’s wholesale pricing strategy on the market for wholesale access to broadband and ultra-broadband and the use of the confidential information of customers of the alternative operators. On July 5, 2018, TIM filed proposed undertakings which, if accepted by the Authority, would close the investigation without any offense being established or sanction being administered. The undertakings were considered as admissible by the Authority, that market tested them in August and September 2018. On October 30, 2018, TIM replied to observations made by third parties during the market test. Third parties expressed concerns about the effectiveness of the undertakings offered by TIM. As a result, in order to meet these concerns, TIM modified its proposed undertakings. In its December 4, 2018 decision, the Italian Antitrust Authority (AGCM) ultimately rejected the proposed series of undertakings as it considered them unsuitable in light of the objections raised. The proceeding is currently set to end by May 31, 2019. Antitrust Case I799 On February 1, 2017, AGCM initiated investigation proceedings for possible breaches of Article 101 TFEU (ban on competition-restricting agreements) against TIM S.p.A. and Fastweb S.p.A., following the signing of an agreement aimed at establishing a joint cooperative enterprise Flash Fiber S.r.l.. In agreement with Fastweb, TIM has submitted several amendments to the agreements signed to the AGCM, in the form of proposed commitments, aimed at settling the proceedings without accepting the violation and, therefore, without any financial penalty. On March 28, 2018 AGCM resolved to approve the undertakings, make them bin

Revenues

Revenues	12 Months Ended
	Dec. 31, 2018
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Revenues	NOTE 25—REVENUES Revenues amounted to 18,940 million euros in 2018, 19,828 million euros in 2017 and 19,025 million euros in 2016, decreased by 888 million euros from 2017 to 2018 compared to a increase by 803 million euros from 2016 to 2017. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Equipment sales 1,538 1,560 1,378 Services 17,379 18,264 17,655 Revenues on construction contracts 23 4 (8 ) Total 18,940 19,828 19,025 Revenues from telecommunications services are presented gross of amounts due to other TLC operators, equal to 1,616 million euros (1,737 million euros in 2017), included in Costs of services. Revenues from services in 2018 include revenues for voice and data services on fixed and mobile networks for retail customers for 10,920 million euros and for other wholesale operators for 3,063 million euros. Please note that in 2018, in applying IFRS 15, the Parent recognized a significant financial component in the offerings contemplating a time extension between fulfillment of the performance obligation and collection by the customer (“installment sales”); as a result, it reduced related revenues for a total amount of about 60 million euros. For a breakdown of revenues by operating segment/geographical area, reference should be made to the Note “Segment Reporting”.

Other Income

Other Income	12 Months Ended
	Dec. 31, 2018
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Other Income	NOTE 26—OTHER INCOME Other income amounted to 341 million euros in 2018, 523 million euros in 2017 and 311 million euros in 2016, decreased by 182 million euros from 2017 to 2018 compared to an increasing by 212 million euros from 2016 to 2017. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Late payment fees charged for telephone services 60 59 60 Recovery of employee benefit expenses, purchases and services rendered 27 22 33 Capital and operating grants 39 51 36 Damages, penalties and recoveries connected with litigation 29 40 24 Partnership agreements and other arrangements with suppliers 22 129 71 Estimate revisions and other adjustments 73 188 Other income 91 34 87 Total 341 523 311 They include, inter alia · contribution fees resulting from partnership and other agreements with leading counterparties, designed to develop the collaboration between the parties, in order to strengthen and stabilize industrial, commercial and real estate relations over time; · 37 million euros connected to the Brazil Business Unit tax recovery following the favorable outcome of the tax dispute relative to the unconstitutional grounds of the law that entailed the inclusion of ICMS indirect tax in the base for calculating taxes on PIS and COFINS revenues.

Acquisition of Goods and Servic

Acquisition of Goods and Services	12 Months Ended
	Dec. 31, 2018
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Acquisition of Goods and Services	NOTE 27—ACQUISITION OF GOODS AND SERVICES Acquisition of goods and services amounted to 8,186 million euros in 2018, 8,388 million euros in 2017 and 7,793 million euros in 2016, decreasing by 202 million euros from 2017 to 2018 compared to a increasing by 595 million euros from 2016 to 2017. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Acquisition of raw materials and merchandise (A) 1,957 1,863 1,614 Costs of services: Revenues due to other TLC operators 1,616 1,737 1,686 Costs for access services to Tlc networks 171 217 244 Commissions, sales commissions and other selling expenses 1,158 1,109 937 Advertising and promotion expenses 236 277 294 Professional and consulting services 242 223 186 Utilities 417 467 484 Maintenance 221 240 287 Outsourcing costs for other services 465 513 447 Mailing and delivery expenses for telephone bills, directories and other materials to customers 84 96 98 Other service expenses 634 664 609 (B) 5,244 5,543 5,272 Lease and rental costs: Rent and leases 607 645 616 TLC circuit lease rents 126 119 82 Other lease and rental costs 252 218 209 (C) 985 982 907 Total (A+B+C ) 8,186 8,388 7,793 During 2018, in connection with the analyses and examinations preparatory for applying the new IFRS 16 standard, the TLC circuit rents, the rents for use of satellite systems—when considered costs of services—and the services component of the lease of real estate and Base Transceiver Stations were reclassified from “Lease and rental costs” to “Costs of services” in order to better represent the nature of these costs. So that the data can be more easily compared, the reclassification was also made on the 2017 data (for a total amount of 279 million euros), and on the 2016 data (for a total amount of 301 million euros).

Employee Benefits Expenses

Employee Benefits Expenses	12 Months Ended
	Dec. 31, 2018
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Employee Benefits Expenses	NOTE 28—EMPLOYEE BENEFITS EXPENSES Employee benefits expenses amounted to 3,105 million euros in 2018, 3,626 million euros in 2017 and 3,106 million euros in 2016, decreasing by 521 million euros from 2017 to 2018 compared to a increasing by 520 million euros from 2016 to 2017. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Employee benefits expenses Wages and salaries 1,994 2,056 2,116 Social security expenses 738 745 770 Other employee benefits 144 110 37 (A) 2,876 2,911 2,923 Costs and provisions for temp work (B) — — — Miscellaneous expenses for personnel and other labor-related services rendered: Charges for termination benefit incentives 8 28 10 Corporate restructuring expenses 216 680 156 Other 5 7 17 (C) 229 715 183 Total (A+B+C) 3,105 3,626 3,106 Employee benefits expenses mainly related to the Domestic Business Unit for 2,781 million euros (3,266 million euros in 2017) and to the Brazil Business Unit for 317 million euros (353 million euros in 2017). “Restructuring expenses” amounted to 216 million euros; Specifically, a plan was launched at the end of 2017 for executive and non-executive 4(1–7-ter) take-up The average salaried workforce, including personnel with temp work contracts, stood at 54,423 employees in 2018 (54,946 in 2017). A breakdown by category is as follows: Year ended December 31, 2018 2017 2016 (Full time equivalent units) Executives 646 707 837 Middle management 4,271 4,269 4,450 White collars 49,505 49,967 52,563 Blue collars 1 1 1 Employees on payroll 54,423 54,944 57,851 Employees with temp work contracts 2 4 Total average headcount of salaried workforce 54,423 54,946 57,855 Headcount in service at December 31, 2018, including personnel with temp work contracts, stood at 57,901 employees (59,429 at December 31, 2017), showing a decrease of 1,528 employees.

Other Operating Expenses

Other Operating Expenses	12 Months Ended
	Dec. 31, 2018
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Other Operating Expenses	NOTE 29—OTHER OPERATING EXPENSES Other operating expenses amounted to 1,259 million euros in 2018, 1,208 million euros in 2017 and 1,083 million euros in 2016, increasing by 51 million euros from 2017 to 2018, compared to an increasing by 125 million euros from 2016 to 2017. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Write-downs and expenses in connection with credit management 518 400 335 Provision charges 189 228 144 TLC operating fees and charges 286 356 373 Indirect duties and taxes 125 111 100 Penalties, settlement compensation and administrative fines 73 33 44 Association dues and fees, donations, scholarships and traineeships 12 15 18 Sundry expenses 56 65 69 Total 1,259 1,208 1,083 of which, included in the supplementary disclosure on financial instruments 518 400 335 This item includes, inter alia, higher provision charges for bad debts (+10 million euros) compared to 2017, mainly attributable to difficulties and delays in the receipts of some South American and Mediterranean Basin operators. Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”.

Internally Generated Assets

Internally Generated Assets	12 Months Ended
	Dec. 31, 2018
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Internally Generated Assets	NOTE 30—INTERNALLY GENERATED ASSETS Internally generated assets amounted to 570 million euros in 2018, 626 million euros in 2017, and 639 million euros in 2016, decreasing by 56 million euros from 2017 to 2018 compared to a decreasing by 13 million euros from 2016 to 2017. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Intangible assets with a finite useful life 248 272 289 Tangible assets owned 322 354 350 Total 570 626 639 Internally generated assets mainly include labor costs of dedicated technical staff for software development and the development of network solutions, applications and innovative services as well as work in connection with the design, construction and testing of network installations.

Depreciation and Amortization

Depreciation and Amortization	12 Months Ended
	Dec. 31, 2018
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Depreciation and Amortization	NOTE 31—DEPRECIATION AND AMORTIZATION Depreciation and amortization amounted to 4,255 million euros in 2018, 4,473 million euros in 2017, and 4,291 million euros in 2016, decreased by 218 million euros from 2017 to 2018 compared to an increasing by 182 million euros from 2016 to 2017. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Amortization of intangible assets with a finite useful life: Industrial patents and intellectual property rights 1,171 1,263 1,243 Concessions, licenses, trademarks and similar rights 422 396 393 Other intangible assets 6 134 107 (A) 1,599 1,793 1,743 Depreciation of tangible assets owned: Buildings (civil and industrial) 36 39 48 Plant and equipment 2,229 2,286 2,170 Manufacturing and distribution equipment 14 16 15 Other 162 159 157 (B) 2,441 2,500 2,390 Depreciation of tangible assets held under finance leases: Buildings (civil and industrial) 159 130 125 Plant and equipment 18 21 17 Other 38 29 16 (C) 215 180 158 Total (A+B+C) 4,255 4,473 4,291 Further details are provided in the Notes “Intangible assets with a finite useful life” and “Tangible assets (owned and under finance leases)”. For a breakdown of depreciation and amortization by operating segment/geographical area, reference should be made to the Note “Segment Reporting”.

Gains (Losses) on Disposals of

Gains (Losses) on Disposals of Non-current Assets	12 Months Ended
	Dec. 31, 2018
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Gains (Losses) on Disposals of Non-current Assets	NOTE 32—GAINS (LOSSES) ON DISPOSALS OF NON—CURRENT ASSETS Gains (losses) on disposals of non—current assets amounted to a loss of 1 million euros in 2018, a gain of 11 million euros in 2017 and a gain of 14 million euros in 2016. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Gains on disposals of non-current Gains on the retirement/disposal of intangible and tangible assets 13 15 28 Gains on the disposal of investments in subsidiaries — — — (A) 13 15 28 Losses on disposals of non-current Losses on the retirement/disposal of intangible and tangible assets 14 4 14 Losses on the disposals of investments in subsidiaries — — — (B) 14 4 14 Total (A—B) (1 ) 11 14 In 2018 this item was negative for 1 million euros while in 2017 it was positive (11 million euros), connected with the ordinary asset renewal process. In 2017, gains on disposals of non-current In 2016, gains on disposals of non-current

Impairment Reversals (Losses) o

Impairment Reversals (Losses) on Non-Current Assets	12 Months Ended
	Dec. 31, 2018
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Impairment Reversals (Losses) on Non-Current Assets	NOTE 33—IMPAIRMENT REVERSALS (LOSSES) ON NON—CURRENT ASSETS Impairment losses on non-current Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Reversals of impairment losses on non-current on intangible assets 4 — — on tangible assets — — — (A ) 4 — — Impairment losses on non-current on intangible assets 2,590 30 — on tangible assets — 7 3 (B) 2,590 37 3 Total (A-B) (2,586 ) (37 ) (3 ) Impairment losses for 2018 amounted to 2,590 million euros and mainly refer to the goodwill impairment loss attributable to the Core Domestic unit and International Wholesale. In accordance with IAS 36, goodwill is not subject to amortization, but is tested for impairment Cash-Generating Unit impairment testing In the 2018 Financial Statements, the annual impairment test resulted in an additional impairment loss of 450 million euros on the goodwill attributed to the Core Domestic Cash-Generating Unit Cash-Generating Unit With reference to the Brazil Cash Generating Units Reversals totaled 4 million euros following an update by the Parent of the assessment of some construction contracts subject to prior impairment. A more detailed analysis is provided in the Note “Goodwill”. Write-downs in 2017 totaled 37 million euros and were mainly represented by write-downs of intangible assets. In 2016, impairment losses on non-current

Other Income (Expenses) from In

Other Income (Expenses) from Investments	12 Months Ended
	Dec. 31, 2018
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Other Income (Expenses) from Investments	NOTE 34—OTHER INCOME (EXPENSES) FROM INVESTMENTS Other income (expenses) from investments reflected an income of 11 million euros, an expense of 18 million euros in 2017, and an income of 7 million euros in 2016. Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Dividends from Other investments 11 1 7 Net gains on disposals of Other investments — — — Loss and impairment losses on Other investments — (19 ) — Total 11 (18 ) 7 In 2018, this item showed a positive figure of 11 million euros and mainly included the dividends paid to TIM S.p.A. by the company Emittenti Titoli. In 2017, this item amounted to an expense of 18 million euros and essentially included the allocation to the income statement of the Reserve for exchange differences on translating foreign operations for the investee company Tierra Argentea S.A., the liquidation of which was completed that year. In 2016, the item showed an income of 7 million euros, including mainly dividends received from Emittenti Titoli S.p.A.

Finance Income and Expenses

Finance Income and Expenses	12 Months Ended
	Dec. 31, 2018
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Finance Income and Expenses	NOTE 35—FINANCE INCOME AND EXPENSES Finance income (expenses) showed a net expense of 1,348 millions euros in 2018, 1,495 million euros in 2017 and 907 million euros in 2016, and comprises: Year ended December 31, 2018 2017 2016 (millions of euros) Finance income 1,056 1,808 2,543 Finance expenses (2,404 ) (3,303 ) (3,450 ) Finance income (expenses), net (1,348 ) (1,495 ) (907 ) The items break down as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Interest expenses and other finance expenses: Interest expenses and other costs relating to bonds (1,012 ) (1,100 ) (1,162 ) Interest expenses to banks (72 ) (113 ) (117 ) Interest expenses to others (204 ) (250 ) (246 ) Total interest expenses (1,288 ) (1,463 ) (1,525 ) Commissions (70 ) (91 ) (95 ) Miscellaneous finance expenses(*) (232 ) (256 ) (221 ) Total other finance expenses (302 ) (347 ) (316 ) Interest income and other finance income: Interest income 52 129 151 Income from financial receivables recorded in non-current — — — Income from securities other than investments, recorded in non-current — — — Income from securities other than investments, recorded in current assets 11 14 16 Miscellaneous finance income (*) 61 26 37 Total interest income and other finance income 124 169 204 Total net interest / financial charges (a) (1,466 ) (1,641 ) (1,637 ) Other components of financial income and expense: Net exchange gains and losses (1 ) 23 246 Net result from derivatives 114 132 114 Net fair value adjustment to fair value hedge derivatives and underlying (3 ) 8 — Net fair value adjustments to non-hedging 8 (17 ) 370 Total other components (b) 118 146 730 Total net financial income (expenses) (c=a+b) (1,348 ) (1,495 ) (907 ) of which, included in the supplementary disclosure on financial instruments (1,161 ) (1,306 ) (916 ) (*) Of which IFRS 9 impact: Year ended December 31, 2018 2017 2016 (millions of euros) Income from negative adjustment of IFRS 9 impairment reserve on financial assets measured through FVTOCI 2 — — Expenses from positive adjustment of IFRS 9 impairment reserve on financial assets measured through FVTOCI (12 ) — — Reversal of IFRS 9 impairment reserve on financial assets measured through FVTOCI 4 — — Impairment losses on financial assets other than investments — — — Further details on Financial Instruments are provided in the Note “Supplementary disclosure on financial instruments”. For greater clarity of presentation, the net effects relating to derivative financial instruments are summarized in the following table: Year ended December 31, 2018 2017 2016 (millions of euros) NET EXCHANGE GAINS AND LOSSES Exchange gains 265 782 713 Exchange losses (266 ) (759 ) (467 ) (1 ) 23 246 NET RESULT FROM DERIVATIVES Income from fair value hedge derivatives 41 66 65 Charges from fair value hedge derivatives — — (1 ) Net result from fair value hedge derivatives (A) 41 66 64 Positive effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component 524 568 649 Negative effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component (446 ) (489 ) (548 ) Net effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component (B) 78 79 101 Income from non-hedging 4 9 13 Charges from non-hedging (9 ) (22 ) (64 ) Net result from non-hedging (C) (5 ) (13 ) (51 ) Net result from derivatives (A+B+C) 114 132 114 Positive fair value adjustment to fair value hedge derivatives 50 — 50 Negative fair value adjustment to underlying financial assets and liabilities of fair value hedge derivatives (53 ) — (45 ) Net fair value adjustments (D) (3 ) — 5 Positive fair value adjustments to underlying financial assets and liabilities of fair value hedge derivatives — 95 173 Negative fair value adjustments to fair value hedge derivatives — (87 ) (178 ) Net fair value adjustments (E) — 8 (5 ) Net fair value adjustment to fair value hedge derivatives and underlying (D+E) (3 ) 8 — NET FAIR VALUE ADJUSTMENTS TO NON-HEDGING Positive fair value adjustments to non-hedging (F) 48 119 676 Negative fair value adjustments to non-hedging (G) (40 ) (136 ) (306 ) Net fair value adjustments to non-hedging (F+G) 8 (17 ) 370

Profit (Loss) for the Year

Profit (Loss) for the Year	12 Months Ended
	Dec. 31, 2018
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Profit (Loss) for the Year	NOTE 36—PROFIT (LOSS) FOR THE YEAR Profits (losses) for the years ended December 31, 2018, 2017 and 2016 are summarized as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Profit (loss) for the year (1,152 ) 1,287 1,966 Attributable to: Owners of the Parent Profit (loss) from continuing operations (1,411 ) 1,121 1,811 Profit (loss) from Discontinued operations/Non-current — — (3 ) Profit (loss) for the year attributable to owners of the Parent (1,411 ) 1,121 1,808 Non-controlling Profit (loss) from continuing operations 259 166 108 Profit (loss) from Discontinued operations/Non-current — — 50 Profit (loss) for the year attributable to Non-Controlling 259 166 158

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
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Earnings Per Share	NOTE 37—EARNINGS PER SHARE Year ended December 31, 2018 2017 2016 Basic Earnings Per Share Profit (loss) for the year attributable to owners of the Parent (1,411 ) 1,121 1,808 Less: additional dividends for the savings shares (0.011 per share and up to capacity) — (66 ) (66 ) (millions of euros) (1,411 ) 1,055 1,742 Average number of Ordinary and Savings Shares (millions) 21,067 21,067 21,067 Basic earnings per share— Ordinary Shares (0.07 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Basic earnings per share— Savings Shares (euro) (0.07 ) 0.06 0.09 Basic Earnings Per Share From continuing Operations Profit (loss) from continuing operations attributable to owners of the Parent (1,411 ) 1,121 1,811 Less: additional dividends for the Savings Shares — (66 ) (66 ) (millions of euros) (1,411 ) 1,055 1,745 Average number of Ordinary and Savings Shares (millions) 21,067 21,067 21,067 Basic earnings (loss) per share from continuing operations— Ordinary Shares (0.07 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Basic earnings (loss) per share from continuing operations— Savings Shares (Euro) (0.07 ) 0.06 0.09 Basic Earnings Per Share From Discontinued operations/Non-current Profit (loss) from Discontinued operations/Non-current (millions of euros) — — 47 Average number of Ordinary and Savings Shares (millions) 21,067 21,067 21,067 Basic earnings (loss) per share from Discontinued operations/ Non-current (euro) — — — Basic earnings (loss) per share from Discontinued operations/ Non-current (euro) — — — Year ended December 31, 2018 2017 2016 Average number of Ordinary Shares 15,039,368,195 15,039,368,195 15,039,128,128 Average number of Savings Shares 6,027,791,699 6,027,791,699 6,027,791,699 Total 21,067,159,894 21,067,159,894 21,066,919,827 Year ended December 31, 2018 2017 2016 Diluted Earnings Per Share Profit (loss) for the year attributable to Owners of the Parent (1,411 ) 1,121 1,808 Dilution effect of stock option plans and convertible bonds (*) 40 32 43 Less: additional dividends for the savings shares (0.011 per share and up to capacity) — (66 ) (66 ) (millions of euros) (1,371 ) 1,087 1,785 Average number of Ordinary and Savings Shares (millions) 22,167 22,167 22,194 Diluted earnings per share—Ordinary Shares (0.06 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Diluted earnings per share—Savings Shares (euro) (0.06 ) 0.06 0.09 Diluted Earnings Per Share From continuing Operations Profit (loss) from continuing operations attributable to owners of the Parent (1,411 ) 1,121 1,811 Dilution effect of stock option plans and convertible bonds (*) 40 32 43 Less: additional dividends for the Savings Shares — (66 ) (66 ) (millions of euros) (1,371 ) 1,087 1,788 Average number of Ordinary and Savings Shares (millions) 22,167 22,167 22,194 Diluted earnings (loss) per share from continuing operations—Ordinary Shares (0.06 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Diluted earnings (loss) per share from continuing operations—Savings Shares (euro) (0.06 ) 0.06 0.09 Diluted Earnings Per Share From Discontinued operations/Non-current Profit (loss) from Discontinued operations/Non-current (millions of euros) — — 47 Dilution effect of stock option plans and convertible bonds Average number of Ordinary and Savings Shares (millions) 22,167 22,167 22,194 Diluted earnings per share from Discontinued operations/ Non-current (euro) — — — Diluted earnings per share from Discontinued operations/ Non-current (euro) — — — Year ended December 31, 2018 2017 2016 Average number of Ordinary Shares (*) 16,139,213,020 16,139,681,521 16,166,142,282 Average number of Savings Shares 6,027,791,699 6,027,791,699 6,027,791,699 Total 22,167,004,719 22,167,473,220 22,193,933,981 * The average number of ordinary shares also includes the potential ordinary shares relating to the equity compensation plans of employees for which the (market and non-market) Future potential changes in share capital The table below shows future potential changes in share capital, based on the issuance of the convertible bond by TIM S.p.A. in March 2015, the authorizations to increase the share capital in place at December 31, 2018, and the options and rights granted under equity compensation plans, still outstanding at December 31, 2018. Number of Share capital Additional paid-in capital Subscription Capital increases already approved (ordinary shares) 2014-2016 Stock Option Plan 133,042 73 80 1.15 343,069 189 158 1.01 893,617 492 393 0.99 13,497,406 7,423 5,264 0.94 Stock Options 14,867,134 8,177 5,895 2015 Convertible Bond (ordinary shares) (*) 1,082,485,386 2,000,000 n.a. n.a. Convertible bonds 2,000,000 Total 2,008,177 (*) The number of shares potentially issuable shown may be subject to adjustments. Further information is provided in the Notes “Financial liabilities (non-current

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2018
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Segment Reporting	NOTE 38—SEGMENT REPORTING a) Reporting by operating segment Segment reporting is based on the following operating segments: · Domestic; · Brazil; · Other Operations. SEPARATE CONSOLIDATED INCOME STATEMENTS BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and eliminations Consolidated Total 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 (millions of euros) Third-party revenues 14,998 15,328 14,971 3,942 4,500 4,044 — — 10 — — — 18,940 19,828 19,025 Intragroup revenues 33 26 35 1 2 3 — — 1 (34 ) (28 ) (39 ) — — — Revenues by operating segment 15,031 15,354 15,006 3,943 4,502 4,047 — — 11 (34 ) (28 ) (39 ) 18,940 19,828 19,025 Other income 273 471 259 69 52 51 — — 1 (1 ) — — 341 523 311 Total operating revenues and other income 15,304 15,825 15,265 4,012 4,554 4,098 — — 12 (35 ) (28 ) (39 ) 19,281 20,351 19,336 Acquisition of goods and services (6,360 ) (6,235 ) (5,785 ) (1,846 ) (2,168 ) (2,028 ) (7 ) (4 ) (9 ) 27 19 29 (8,186 ) (8,388 ) (7,793 ) Employee benefits expenses (2,781 ) (3,266 ) (2,759 ) (317 ) (353 ) (336 ) (6 ) (7 ) (11 ) (1 ) — — (3,105 ) (3,626 ) (3,106 ) of which: accruals to employee severance indemnities (1 ) (6 ) (1 ) — — — — — — — — — (1 ) (6 ) (1 ) Other operating expenses (763 ) (704 ) (574 ) (491 ) (500 ) (505 ) (6 ) (5 ) (2 ) 1 1 (2 ) (1,259 ) (1,208 ) (1,083 ) of which: write-downs and expenses in connection with credit management and provision charges (501 ) (468 ) (317 ) (208 ) (160 ) (162 ) — — — 1 — — (708 ) (628 ) (479 ) Change in inventories 88 41 16 14 (6 ) 1 — — (8 ) — — — 102 35 9 Internally generated assets 467 510 535 95 108 95 — — — 8 8 9 570 626 639 Depreciation and amortization (3,340 ) (3,360 ) (3,310 ) (915 ) (1,114 ) (980 ) — — — — 1 (1 ) (4,255 ) (4,473 ) (4,291 ) Gains (losses) on disposals of non-current (13 ) (2 ) (9 ) 12 14 23 — — — — (1 ) — (1 ) 11 14 Impairment reversals (losses) on non-current (2,586 ) (37 ) (3 ) — — — — — — — — — (2,586 ) (37 ) (3 ) Operating profit (loss) 16 2,772 3,376 564 535 368 (19 ) (16 ) (18 ) — — (4 ) 561 3,291 3,722 Share of losses (profits) of associates and joint ventures accounted for using the equity method (1 ) (1 ) (23 ) — — — — — — — — — (1 ) (1 ) (23 ) Other income (expenses) from investments 11 (18 ) 7 Finance income 1,056 1,808 2,543 Finance expenses (2,404 ) (3,303 ) (3,450 ) Profit (loss) before tax from continuing operations (777 ) 1,777 2,799 Income tax expense (375 ) (490 ) (880 ) Profit (loss) from continuing operations (1,152 ) 1,287 1,919 Profit (loss) from Discontinued operations/Non-current — — 47 Profit (loss) for the year (1,152 ) 1,287 1,966 Attributable to: Owners of the Parent (1,411 ) 1,121 1,808 Non-controlling 259 166 158 REVENUES BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and eliminations Consolidated Total 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 (millions of euros) Revenues from equipment sales—third party 1,358 1,350 1,136 180 210 232 — — 10 — — — 1,538 1,560 1,378 Revenues from equipment sales—intragroup — — — — 1 — — — 1 — (1 ) (1 ) — — — Total revenues from equipment sales 1,358 1,350 1,136 180 211 232 — — 11 — (1 ) (1 ) 1,538 1,560 1,378 Revenues from services—third party 13,617 13,974 13,843 3,762 4,290 3,812 — — — — — — 17,379 18,264 17,655 Revenues from services—intragroup 33 26 35 1 1 3 — — — (34 ) (27 ) (38 ) — — — Total revenues from services 13,650 14,000 13,878 3,763 4,291 3,815 — — — (34 ) (27 ) (38 ) 17,379 18,264 17,655 Revenues on construction contracts—third party 23 4 (8 ) — — — — — — — 23 4 (8 ) Revenues on construction contracts—intragroup — — — — — — — — — — — — — — — Total revenues on construction contracts 23 4 (8 ) — — — — — — — 23 4 (8 ) Total third-party revenues 14,998 15,328 14,971 3,942 4,500 4,044 — — 10 — — — 18,940 19,828 19,025 Total intragroup revenues 33 26 35 1 2 3 — — 1 (34 ) (28 ) (39 ) — — — Total revenues by operating segment 15,031 15,354 15,006 3,943 4,502 4,047 — — 11 (34 ) (28 ) (39 ) 18,940 19,828 19,025 PURCHASE OF INTANGIBLE AND TANGIBLE ASSETS BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and Consolidated Total 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 (millions of euros) Purchase of intangible assets 3,385 1,763 1,113 262 529 528 — — — — — — 3,647 2,292 1,641 Purchase of tangible assets 2,194 2,842 2,792 637 635 675 — — — — — — 2,831 3,477 3,467 Purchase of intangible and tangible assets 5,579 4,605 3,905 899 1,164 1,203 — — — — — — 6,478 5,769 5,108 of which capital expenditures 5,518 4,551 3,709 890 1,150 1,167 — — — — — — 6,408 5,701 4,876 of which increases in finance leasing contracts 61 54 196 9 14 36 — — — — — — 70 68 232 HEADCOUNT BY OPERATING SEGMENT Domestic Brazil Other operations Consolidated Total As of As of As of As of As of As of As of As of (number of employees) Headcount 48,200 49,851 9,658 9,508 43 70 57,901 59,429 ASSETS AND LIABILITIES BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and eliminations Consolidated Total As of As of As of As of As of As of As of As of As of As of (millions of euros) Non-current 48,056 48,850 6,037 6,769 3 3 (1 ) 1 54,095 55,623 Current operating assets 4,233 4,363 874 898 5 (2 ) (17 ) (10 ) 5,095 5,249 Total operating assets 52,289 53,213 6,911 7,667 8 1 (18 ) (9 ) 59,190 60,872 Investments accounted for using the equity method 16 17 — — — — — — 16 17 Discontinued operations /Non-current — — Unallocated assets 6,413 7,894 Total Assets 65,619 68,783 Total operating liabilities 10,732 9,829 1,885 1,855 48 58 (69 ) (26 ) 12,596 11,716 Liabilities directly associated with Discontinued operations/Non-current — — Unallocated liabilities 31,276 33,284 Equity 21,747 23,783 Total Equity and liabilities 65,619 68,783 b) Reporting by geographical area Revenues Non-current Breakdown by location of Breakdown by location of Breakdown by location of 2018 2017 2016 2018 2017 2016 As of As of (millions of euros) Italy (A) 14,711 15,015 14,635 13,839 14,064 13,657 47,795 48,591 Outside Italy (B) 4,229 4,813 4,390 5,101 5,764 5,368 6,300 7,032 Total (A+B) 18,940 19,828 19,025 18,940 19,828 19,025 54,095 55,623 c) Information about major customers None of the TIM Group’s customers exceeds 10% of consolidated revenues.

Related Party Transactions and

Related Party Transactions and Direction and Coordination Activity	12 Months Ended
	Dec. 31, 2018
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Related Party Transactions and Direction and Coordination Activity	NOTE 39—RELATED PARTY TRANSACTIONS AND DIRECTION AND COORDINATION ACTIVITY The following tables show the figures relating to related party transactions and the impact of those amounts on the separate consolidated income statements, consolidated statements of financial position and consolidated statements of cash flows. On May 16, 2018, the Board of Directors of TIM S.p.A. acknowledged that the grounds for considering Vivendi the entity exercising direction and coordination powers over TIM no longer applied. Furthermore, on June 25, 2018, the Board of Directors of TIM approved amendments to the internal procedure governing transactions with related parties, and updated the relative related-party boundary to reflect the new situation, whereby Vivendi no longer qualifies as the de facto controlling entity over TIM. The procedure was lastly updated by the Board of Directors with some improvements on July 24, 2018. Related-party transactions, when not dictated by specific laws, were conducted at arm’s length; the transactions were carried out in accordance with the internal procedure that contains the rules aimed at ensure the transaparency and fairness of related party transactions in accordance with Consob Regulation 17221/2010. The current procedure is available on the website www.telecomitalia.com, under the Group section/Governance System channel. The effects of the related party transactions on the Group separate consolidated income statement line items for 2018 and 2017 are as follows: The effects of the related party transactions on the Group separate consolidated income statements Separate consolidated income statement line items 2018 Total (a) Associates, Other (*) Pension Key Total % (millions of euros) Revenues 18,940 2 3 5 0.0 Acquisition of goods and services 8,186 5 157 162 2.0 Employee benefits expenses 3,105 — — 78 14 92 3.0 Finance income 1,056 — 8 8 0.8 Finance expenses 2,404 3 6 9 0.4 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Separated consolidated income statement line items 2017 Total (a) Associates, Other (*) Pension Key Total % (millions of euros) Revenues 19,828 3 115 118 0.6 Other income 523 4 4 8 1.5 Acquisition of goods and services 8,388 22 170 192 2.3 Employee benefits expenses 3,626 1 74 37 112 3.1 Finance income 1,808 45 45 2.5 Finance expenses 3,303 11 38 49 1.5 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Separate consolidated income statement line items 2016 Total (a) Associates, Other (*) Pension Key Total Transactions Total related % (millions of euros) Revenues 19,025 10 355 365 (23 ) 342 1.8 Other income 311 1 1 1 0.3 Acquisition of goods and services 7,793 21 231 252 (14 ) 238 3.1 Employee benefits expenses 3,106 2 83 36 121 121 3.9 Other operating expenses 1,083 1 1 1 0.1 Finance income 2,543 108 108 108 4.2 Finance expenses 3,450 114 114 114 3.3 Profit (loss) from Discontinued operations/Non-current 47 (1 ) 10 9 (*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties. The effects of the related party transactions on the Group separate consolidated statements of financial position Consolidated statement of financial position line items at December 31, 2018 Total (a) Associates, Other (*) Pension Total % on line (millions of euros) Non-current (1,594 ) — Current financial assets (3,383 ) — Non-current 25,059 — Current financial liabilities 5,913 — Trade and miscellaneous receivables and other current assets 4,706 3 19 22 0.5 Miscellaneous payables and other non-current 3,297 1 1 0.0 Trade and miscellaneous payables and other current liabilities 6,901 3 46 24 73 1.1 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Consolidated statement of financial position line items at December 31, 2017 Total (a) Associates, Other (*) Pension Total % on line (millions of euros) Non-current (1,768 ) — Securities other than investments (current assets) (993 ) (15 ) (15 ) 1.5 Financial receivables and other current financial assets (437 ) (38 ) (38 ) 8.7 Cash and cash equivalents (3,575 ) — Current financial assets (5,005 ) (53 ) (53 ) 1.1 Non-current 28,108 100 100 0.4 Current financial liabilities 4,756 163 163 3.4 Trade and miscellaneous receivables and other current assets 4,959 3 33 36 0.7 Trade and miscellaneous payables and other current liabilities 7,520 3 33 24 60 0.8 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. The effects of the related party transactions on the Group consolidated statements of cash flows Consolidated statement of cash flows line items 2018 Total (a) Associates, Other (*) Pension Total (b) % on line (millions of euros) Purchase of intangible and tangible assets on an accrual basis 6,478 3 3 0.0 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Consolidated statement of cash flows line items 2017 Total (a) Associates, Other (*) Pension Total % on line (millions of euros) Purchase of intangible and tangible assets on an accrual basis 5,769 135 135 2.3 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Consolidated statement of cash flows line items 2016 Total (a) Associates, Other (*) Pension Total Transactions Total related % on line (millions of euros) Purchase of intangible and tangible assets on an accrual basis 5,108 159 — 159 159 3.1 (*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties. TRANSACTIONS WITH ASSOCIATES, SUBSIDIARIES OF ASSOCIATES AND JOINT VENTURES Italtel S.p.A. was recapitalized in 2017. The TIM Group did not participate, leading to the disposal of the equity interests it held. The recapitalization concluded on December 14, 2017, as of which date the Italtel group was no longer a related party of the TIM Group. Separate consolidated income statement line items 2018 2017 2016 Type of contract (millions of euros) Revenues Asscom S.r.l. 1 1 1 Insurance brokerage Italtel group 1 7 Provision of equipment rental, fixed and mobile telephone and outsourced communication services NordCom S.p.A. 1 1 1 Fixed and mobile voice services, equipment, data network connections and outsourced Other minor companies — — 1 Total revenues 2 3 10 Other income — 4 Contributionsgoverned by partnership agreements and penalties with respect to the Italtel group. Acquisition of goods and services Italtel group 17 16 Supply and maintenance of switching equipment, software development and platforms upgrading, and customized products and services, as part of TIM offerings to the Italtel group customers, and extension of professional services for the new Multimedia Video Data Center for the provision of the TIM Vision service NordCom S.p.A. — — 1 Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing W.A.Y. S.r.l. 4 4 4 Supply, installation and assistance services for geolocation equipment provided as part of offers to TIM customers and development and integration services provided under the Consip agreement. Other minor companies 1 1 Total acquisition of goods and services 5 22 21 Finance expenses 3 11 — Write-down of the financial receivable due from Alfiere. Consolidated statement of financial position line items As of As of Type of contract (millions of euros) Trade and miscellaneous receivables and other current assets Alfiere S.p.A. 1 1 Contracts for project management, administration, corporate and compliance services, and sundry chargebacks. W.A.Y. S.r.l. 1 1 Supply of fixed-line and mobile services Other minor companies 1 1 Total trade and miscellaneous receivables and other current assets 3 3 Trade and miscellaneous payables and other current liabilities Movenda S.p.A. 1 1 Supply and certification of SIM-cards, W.A.Y. S.r.l. 1 1 Supply, installation and assistance services for geolocation equipment provided as part of offers to TIM customers and development and integration services provided under the Consip agreement. Other minor companies 1 1 Total trade and miscellaneous payables and other current liabilities 3 3 Consolidated statement of cash flows line items 2018 2017 2016 Type of contract (millions of euros) Purchase of intangible and tangible assets on an accrual basis Italtel group 132 157 Purchases of telecommunications equipment Movenda S.p.A. 2 2 2 Information technology services and licenses for Mobile Connect Cardlets Other minor companies 1 1 Total purchase of intangible and tangible assets on an accrual basis 3 135 159 The shareholder loan with the joint venture Alfiere S.p.A. in place at December 31, 2017 (11 million euros) was used to cover losses for 3 million euros and was subsequently increased by 3 million euros during 2018. The remaining amount, of 11 million euros, was fully written down. At December 31, 2018, TIM S.p.A. had issued guarantees in favor of Alfiere S.p.A. for 1 million euros. TRANSACTIONS WITH OTHER RELATED PARTIES Details are provided below of the transactions with: · Vivendi Group and the companies of the group it belongs to (as a result of the resolutions of the Board of Directors of TIM S.p.A. of May 3 and June 1, 2017); · Related companies through Directors appointed on May 4, 2018; · Former Telco company and related companies through Directors whose term of office ended on May 4, 2018. The most significant amounts are summarized as follows: Separate consolidated income statement line items 2018 2017 2016 Type of contract (millions of euros) Revenues Other Directors or through 1 Fixed-line and mobile voice services and devices. Mediobanca group 1 4 7 Telephone services, sale of equipment, data network services and Internet accesses. Former Telco Companies 110 348 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Other minor companies 1 1 — Total revenues 3 115 355 Interconnection services, roaming, broadband access fees, supply of “IRU” transmission capacity and software Other income — 4 1 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Acquisition of goods and services Havas group 146 91 — Purchase of media space on behalf of the TIM Group and, to a lesser extent, development and delivery of advertising campaigns. Mediobanca group — 1 1 Credit recovery activities. Vivendi group 9 9 8 Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames). Former Telco Companies 69 221 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Other Directors or through 2 — 1 Amounts recognized for telephone services to be paid back. Total acquisition of goods and services 157 170 231 Employee benefits expenses — 1 2 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Other operating expenses — — 1 Expenses for penalties and contractual breaches towards the Intesa Sanpaolo group Finance income Mediobanca group 8 15 18 Bank accounts, deposits and hedging derivatives. Former Telco Companies 30 90 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Total finance income 8 45 108 Finance expenses Mediobanca group 6 15 26 Term Loan Facility and Revolving Credit Facility and hedging derivatives. Former Telco Companies 23 88 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Total finance expenses 6 3 114 Consolidated statement of financial position line items As of As of Type of contract (millions of euros) Securities other than investments (current assets) 15 Bonds issued by Mediobanca. Financial receivables and other current financial assets 38 Hedging derivatives, loans, financing and finance leases made with Mediobanca. Non-current 100 Hedging derivatives, loans, financing and finance leases made with Mediobanca. Current financial liabilities 163 Hedging derivatives and loans made with Mediobanca. Consolidated statement of financial position line items As of As of Type of contract Trade and miscellaneous receivables and other current assets Other Directos or through 1 3 Fixed-line and mobile voice services and devices. Havas group 17 29 Purchase of media space on behalf of the TIM Group and, to a lesser extent, development and delivery of advertising campaigns. Vivendi Group 1 TIM Show 2018 service and TV series rights. Other minor companies 1 Total trade and miscellaneous receivables and other current assets 19 33 Miscellaneous payables and other non-current 1 Deferred income for IRU sale to the Vivendi group. Trade and miscellaneous payables and oher current liabilities Havas group 44 30 Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns Mediobanca group 1 Credit recovery activities. Vivendi group 2 2 Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames). Total trade and miscellaneous payables and other current liabilities 46 33 TRANSACTIONS WITH PENSION FUNDS Separate consolidated income statements line items 2018 2017 2016 Type of contract (millions of euros) Employee benefits expenses Contributions to pension funds Fontedir 8 10 11 Telemaco 66 67 69 Other pension funds 4 (3 ) 3 Total employee benefits expenses 78 74 83 Consolidated statement of financial position line items As of As of Type of contract (millions of euros) Trade and miscellaneous payables and other current liabilities Payables for contributions to pension funds Fontedir 3 3 Telemaco 21 21 Total trade and miscellaneous payables and other current liabilities 24 24 * * * REMUNERATION TO KEY MANAGERS In 2018, the total remuneration recorded on an accrual basis by TIM or by Group subsidiaries in respect of key managers amounted to 14.0 million euros (37.0 million euros in 2017). The figure breaks down as follows: 2018 2017 2016 (millions of euros) Short-term remuneration 6.8 (1) 10.4 (4) 13.1 (1) Long-term remuneration 0.5 0.1 (5) 1.9 Employment termination benefit incentives 5.6 (2) 25.5 12.0 (7) Share-based payments(*) 1.0 (3) 1.0 (6) 9.1 (3) 14.0 37.0 36.1 (*) These refer to the fair value of the rights, accrued to December 31, under the share-based incentive plans of TIM S.p.A. and its subsidiaries (Long Term Incentive 2018 and Plans of the subsidiaries). (1) of which 1.1 million euros recorded by the subsidiaries; (2) of which 2.4 million euros recorded by the subsidiaries; (3) of which 0.2 million euros recorded by the subsidiaries; (4) of which 1.6 million euros recorded by the subsidiaries; (5) of which 0.1 million euros recorded by the subsidiaries; (6) of which 1.0 million euros recorded by the subsidiaries. (7) of which 0.6 million euros recorded by the subsidiaries. Short-term remuneration Employment termination benefit incentives In 2018, contributions to defined contribution plans (Assida and Fontedir) paid by TIM S.p.A. or subsidiaries of the Group in favor of Key Managers totaled 119,000 euros (97,000 euros in 2017). In 2018, “Key managers”, i.e. those who have the power and responsibility, directly or indirectly, for the planning, direction and control of the operations of the TIM Group, including directors, were the following: Directors: Arnaud Roy de Puyfontaine (1) Executive Chairman of TIM S.p.A. Giuseppe Recchi (2) Deputy Executive Chairman of TIM S.p.A. Fulvio Conti (3) Executive Chairman of TIM S.p.A. Amos Genish (4) Managing Director and Chief Executive Officer of TIM S.p.A. (5) General Manager of TIM S.p.A. Luigi Gubitosi (6) Managing Director and Chief Executive Officer of TIM S.p.A. (6) General Manager of TIM S.p.A. Managers: Stefano De Angelis (7) Diretor Presidente Tim Participações S.A. Sami Foguel (8) Stefano Azzi (9) Head of Consumer & Small Enterprise (18) Chief Consumer Office Stefano Ciurli (9) Head of Wholesale Giovanni Ferigo (9) Head of Technology Lorenzo Forina (9) Head of Business & Top Clients (18) Chief Business & Top Clients Office Mario Di Mauro (10) Strategy, Innovation & Customer Experience Riccardo Meloni (11) Head of Human Resources & Organizational Development Cristoforo Morandini (9) Head of Regulatory Affairs and Equivalence Agostino Nuzzolo (12) Head of Legal, Regulatory and Tax Piergiorgio Peluso Head of Administration, Finance and Control Elisabetta Romano (13) Chief Technology Office Pietro Scott Iovane (14) Chief Commercial Office Michel Sibony (15) Head of the Procurement Unit & Real Estate Anna Spinelli (16) Head of the Procurement Unit & Real Estate Stefano Siragusa (17) Chief Wholesale Infrastructures Network and Systems Office (1) to April 24, 2018; (2) to March 22, 2018; (3) from November 13, 2018 to November 17, 2018; (4) to April 24, 2018 and from May 7 to November 13, 2018; (5) to November 14, 2018; (6) from November 18, 2018; (7) to July 22, 2018; (8) from July 23, 2018; (9) to March 5, 2018; (10) from March 6, 2018; with organization communication dated January 7, 2019, the structure was renamed: Innovation and Customer Experience; (11) from March 16, 2018; (12) with organization communication dated January 7, 2019, the structure was renamed: Legal & Tax; (13) from July 1, 2018; (14) from April 19, 2018 to September 11, 2018; (15) to May 16, 2018; (16) from September 1, 2018; (17) from March 12, 2018; (18) from September 24, 2018.

Equity Compensation Plans

Equity Compensation Plans	12 Months Ended
	Dec. 31, 2018
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Equity Compensation Plans	NOTE 40—EQUITY COMPENSATION PLANS Equity compensation plans in place at December 31, 2018 are used for retention purposes and to offer long-term incentives to Group managers and personnel. A summary is provided below of the plans in place at December 31, 2018. DESCRIPTION OF STOCK OPTION PLANS TIM S.p.A. 2014-2016 Stock Option Plan The objective of the 2014–2016 Stock Option Plan, introduced following its approval by the Board of Directors of the Company on June 26, 2014, was to encourage management holding organizational positions that are crucial to the company business to focus on the medium/long-term growth in value of company shares. It was aimed at the then Chief Executive Officer, Top Management (including Key Officers) and select TIM Group managers. Please refer to the Financial Statements at December 31, 2017 for a description of the plan. The three-year exercise period (March 24, 2017—March 24, 2020) commenced following the approval of the financial statements for 2016 by the Board of Directors on March 23, 2017. Based on final data approved, the number of exercisable options is 20% of the total options assigned to targets. The exercise price was set, by the Board of Directors meeting that initiated the plan at 0.94 euros per option (strike price). For the allocations made in 2015 and 2016, the strike price was determined as the higher of the price established upon initial allocation and the price resulting from the application of the above criteria at the time of allocation of the options. Below is the situation at December 31, 2018: – 133,042 shares at a unit price of 1.15 euros; – 343,069 shares at a unit price of 1.01 euros; – 893,617 shares at a unit price of 0.99 euros; – 13,497,406 shares at a unit price of 0.94 euros. Tim Participações S.A. Stock Option Plan · 2011-2013 Plan On August 5, 2011, the General Meeting of Shareholders of Tim Participações S.A. approved the long-term incentive plan for managers in key positions in the company and its subsidiaries. Exercise of the options is subject to achieving two objectives simultaneously: – absolute performance: increase in value of the Tim Participações S.A.’s shares; – relative performance: performance of the price of Tim Participações S.A.’s shares against a benchmark index mainly composed of in the Telecommunications, Information Technology and Media industry. Performance targets refer to the three-year period 2011-2013 and performance is recorded in July of each year. The vesting period is 3 years (33% the first year, 66% the second year and the balance in the third year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form. · 2011 The grantees of the options were granted the right to purchase a total of 2,833,596 shares. The exercise period expired in August 2017. As such, the plan is now closed. · 2012 On September 5, 2012 the grantees of the options were granted the right to purchase a total of 2,661,752 shares. The exercise period expired in September 2018; the 194,756 pending options were canceled and so the plan was closed. · 2013 On July 30, 2013, the grantees of the options were granted the right to purchase a total of 3,072,418 shares. As at December 31, 2018 all pending options were vested, and 543,583 options were still valid. · 2014-2016 Plan On April 10, 2014, the General Meeting of Shareholders of Tim Participações S.A. approved the long-term incentive plan for managers in key positions in the company and its subsidiaries. Exercise of the options is not subject to the achievement of specific performance targets, but the exercise price is adjusted upwards or downwards according to the performance of the Tim Participações S.A. shares in a ranking of Total Shareholder Return, in which companies in the Telecommunications, Information Technology and Media industry are compared during each year of validity of the plan. If the performance of the Tim Participações S.A. shares, in the 30 days prior to September 29 of each year, is in last place in that ranking, the participant loses the right to 25% of the options vesting at that time. The vesting period is 3 years (a third per year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form. · 2014 On September 29, 2014, the grantees of the options were granted the right to purchase a total of 1,687,686 shares. At the end of December 2018, 531,972 options were still valid. · 2015 On October 16, 2015, the grantees of the options were granted the right to purchase a total of 3,355,229 shares. In 2018, 656,268 options were exercised and 291,949 expired due to terminations. The first wave exercised was valued at 8.7341 reais, up 3.33% based on the position in the ranking of benchmarked companies. In the second wave, options were exercised at a price of 8.4625 reais, thanks to the improvement in the above ranking. In the last wave, options were exercised at a price of 7.6074 reais, with a 10% discount based on the position in the ranking of benchmarked Companies. At the end of December 2018, 292,523 options were still valid. · 2016 On November 8, 2016, the grantees of the options were granted the right to purchase a total of 3,922,204 shares. In December 2018, 510,884 options were exercised at a price of 7.6928 reais, due to the 5% readjustment of the price as a result of being ranked first in the list of benchmarked companies. At the same time, 1,277,878 options expired due to terminations. The first wave exercised was valued at 7.6928 reais, discounted 5% based on the position in the ranking of benchmarked companies. In the second wave, options were exercised at a price of 7.2879 reais, with a 10% discount based on the position in the ranking of benchmarked Companies. At the end of December 2018, 895,522 options were still valid. DESCRIPTION OF OTHER EQUITY COMPENSATION PLANS TIM S.p.A.—2018-2020 Long Term Incentive Plan On April 24, 2018, the Shareholders’ Meeting of Telecom Italia S.p.A. (“TIM”, the “Company” or the “Issuer”), approved a Long Term Incentive Plan 2018 (the “Plan”). The objective of the Plan is to create incentives for Beneficiaries upon achievement of Group corporate objectives set out in the industrial plan, bringing the interests of management holding organizational positions that are crucial to the company business into line with the interests of TIM owners in terms of growth in value of the Share over the medium to long term. The Plan envisages two grants: a first grant reserved to the Chief Executive Officer, serviced by a maximum of 30,000,000 shares; a second grant for a select number of Group management (serviced by a maximum of 55,000,000 shares). It provides for a three-year vesting period (2018–2020) and the bonus allocation of ordinary shares of the company Telecom Italia subject to the achievement of the performance conditions stated below, as assessed by the Board of Directors when approving the TM Group consolidated financial statements at December 31, 2020: · Stock performance · Equity Free Cash Flow · (+) adjusted EBITDA, i.e. reported EBITDA adjusted for any non-recurring · (-) capital expenditures (capex; not including the investment in frequencies); · (+/-) changes in adjusted net working capital (reported adjusted for any non-recurring · (-) total finance expenses; · (-) taxes This amount is the Free Cash Flow available for paying dividends, debt repayment, the impact of IAS 17 (finance lease) and the investment in frequencies, and does not include the financial impact of investment acquisition and/or disposal transactions (M&A). Following assignment, all shares will be subject to the lock-up The operating terms and conditions of the Plan are set forth in the Plan Rules, approved by the Board of Directors on July 24, 2018, which resolved its start-up. TIM S.p.A.—Special Award 2016—2019 For the description of the Special Award 2016-2019, launched in 2016, see the Consolidated financial statements at December 31, 2017. At December 31, 2018 the Key Managers, identified in 2017 as beneficiaries in relation to the 1.5% share of the 2016 over-performance, were granted a total amount of 1 million euros (of which 0.8 million euros consisted of 1,025,640 TIM S.p.A. ordinary shares and the remainder in cash). The payment is scheduled for after the approval of the Financial Statements for the year 2019. TIM Participações S.A.—2018—2020 Plan On April 19, 2018, the General Meeting of Shareholders of Tim Participações S.A. approved the long-term incentive plan for managers in key positions in the company and its subsidiaries. The plan aims to remunerate participants with shares issued by the company, subject to specific temporal and/or performance conditions (upon reaching specific targets). The 2018-2020 Plan does not cover criteria for setting the purchase or exercise price because the shares are granted at market value. The vesting period is 3 years (a third per year) and the company does not have the legal obligation to repurchase or liquidate the shares in cash or in any other form. The portion of shares linked to performance (70%) is granted 1/3 each year, if the performance target is achieved; the remaining portion of shares (30%) is granted 3 years after allocation. The plan allows for the shares to be transferred and also allows for payment to be made in the equivalent cash value. · 2018 On April 20, 2018, the grantees were granted the right to obtain a total of 849,932 shares. As at December 31, 2018, the first vesting period has not yet finished. However, 383,418 shares were canceled due to the participants leaving the company. At the end of December 2018, 466,514 shares were still valid. INWIT S.p.A. Long Term Incentive 2018—2020 The INWIT S.p.A. Shareholders’ Meeting approved the Long Term Incentive Plan 2018 – 2020 (the “Plan”) on April 13, 2018 and authorized the Board of Directors to purchase and make available Company shares in one or more times and for an eighteen-month period starting from the date of the shareholders’ meeting resolution. These shares serve to establish the aforementioned share incentive plan. The purchases will concern a maximum number of 400,000 ordinary shares of the Company, representing about 0.07% of the INWIT share capital. The objective of the Plan is to create incentives for Beneficiaries upon achievement of Company strategic objectives set out in the industrial plan communicated to the market, bringing the interests of management holding organizational positions that are crucial to the company business into line with the interests of INWIT owners in terms of growth in value of the share over the medium to long term. The Plan provides for a three-year vesting period (2018–2020) and the bonus allocation of shares subject to the achievement of two performance conditions, as assessed by the Board of Directors when approving the Company financial statements at December 31, 2020: – Total Shareholder Return regarding INWIT ( 60% weighting). The parameter measures INWIT’s TSR position in the Italian and foreign TowerCo TSR (“peer group”) rankings; – cumulative Recurring Free Cash Flow over the period 2018-2020 (40% weighting). This indicates the cash flow generated by operational management after investments to maintain infrastructures and after finance expenses. On the other hand, development investments are not included. The operating terms and conditions of the Plan are set forth in the Plan Rules, approved by the Board of Directors during its meeting on July 23, 2018. Start-up Purchase of 222,118 treasury shares through Mediobanca—Banca di Credito Finanziario S.p.A., representing 0.037% of the share capital implemented by INWIT for funding the service of the 2018-2020 Long Term Incentive Plan, was finalized on November 15, 2018. The shares are deposited on a securities account held by Inwit S.p.A. at Intesa Sanpaolo S.p.A.. CALCULATION OF FAIR VALUE MEASUREMENT OF THE GRANTED OPTIONS AND RIGHTS Parameters used to determine fair value—Tim S.p.A. LTI 2018-2020 Plan Plans/Parameters Exercise Nominal (1) Volatility (2) Period Expected Risk-free (3) LTI 2018-2020 Plan—equity component 0 0.63 n.a. 3 years 0 -0.552% at 3 years LTI 2018-2020 Plan—equity component (New CEO) 0 0.51 n.a. 2 years 0 -0.594% at 2 years (1) Arithmetic mean of the official prices of the Shares recognized starting from the stock market trading day prior to that of assignment until the thirtieth previous ordinary calendar day (both included) on the Electronic Stock Exchange organized and managed by Borsa Italiana S.p.A., calculated using only the days to which the prices taken as the basis of calculation refer as the divisor, cut off at the second decimal. (2) Based on the performance objectives of the plan, the TIM share volatility values were considered and, if necessary, also those of the securities of the major companies of the telecommunications sector (“peer basket”). (3) The risk-free interest rate refers to the rate of government securities of the Federal Republic of Germany (market benchmark for transactions in euros) with due date consistent with the period of reference at the valuation date. Parameters used to determine fair value—Tim Participações S.A. Plan/parameter Exercise Nominal Volatility Period Expected Risk-free Stock Option Plan 2011 8.84 51.73% 6 years — 11.94% per annum Stock Option Plan 2012 8.96 50.46% 6 years — 8.89% per annum Stock Option Plan 2013 8.13 48.45% 6 years — 10.66% per annum Stock Option Plan 2014 13.42 44.60% 6 years — 10.66% per annum Stock Option Plan 2015 8.45 35.50% 6 years — 16.10% per annum Stock Option Plan 2016 8.1 36.70% 6 years — 11.73 per annum 2018-2020 Plan 14.41 3 years — n.a. Parameters used to determine fair value—INWIT S.p.A. Plans/Parameters Exercise Nominal (1) Volatility Period Expected Interest rate INWIT LTI 2018-2020 0 6.208 n.a. 3 years 0.19 -0.1 annual (1) Arithmetic mean of the official prices of the INWIT S.p.A. ordinary shares recognized on the Electronic Stock Exchange organized and managed by Borsa Italiana S.p.A. over the 30 calendar days prior to the date of the Board of Directors meeting held November 6, 2018 (October 6, 2018—November 5, 2018). Effects on the income statement and statement of financial position Equity compensation plans which call for payment in equity instruments are recorded at fair value (except for the 2018 Plan of TIM Participações) which represents the cost of such instruments at the grant date and is recorded in the separate income statements under “Employee benefits expenses” over the period between the grant date and the vesting period with a contra-entry to the equity reserve “Other equity instruments”. For the portion of the plans that provide for the payment of compensation in cash, the amount is recognized in liabilities as a contra-entry to “Employee benefits expenses”; at the end of each year such liability is measured at fair value (except for the 2018 Plan of TIM Participações). Equity compensation plans which call for payment in equity instruments did not have significant impacts either on the income statements or the statements of financial position or of cash flows of the TIM Group at December 31, 2018.

Other Information

Other Information	12 Months Ended
	Dec. 31, 2018
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Other Information	NOTE 41 OTHER INFORMATION a) Exchange rates used to translate the financial statements of foreign operations (*) Year-end Average exchange rates for the year (Local Currency against 12/31/2018 12/31/2017 12/31/2016 Year 2018 Year 2017 Year 2016 Europe BGN Bulgarian Lev 1.95580 1.95580 1.95580 1.95580 1.95580 1.95580 CZK Czech Koruna 25.72400 25.53500 27.02100 25.64653 26.32658 27.03443 CHF Swiss Franc 1.12690 1.17020 1.07390 1.15517 1.11171 1.09004 TRY Turkish Lira 6.05880 4.54640 3.70720 5.69649 4.12109 3.34284 GBP Pound Sterling 0.89453 0.88723 0.85618 8.88474 0.87640 0.81905 RON Romanian Leu 4.66350 4.65850 4.53900 4.65441 4.56884 4.49053 RUB Russian Ruble 79.71500 69.39200 64.30000 74.03808 65.90160 74.15831 North America USD U.S. Dollar 1.14500 1.19930 1.05410 1.18121 1.12946 1.10666 Latin America VEF Venezuelan Bolivar -Fuerte n.a. 16.19055 14.23035 n.a. 15.18018 14.90133 VES Venezuelan Bolivar -Soberano 729.80267 n.a. n.a. (**)139.15438 n.a. n.a. BOB Bolivian 7.91200 8.28720 7.28383 8.16214 7.80453 7.64702 PEN Peruvian Nuevo Sol 3.86300 3.88540 3.54020 3.87979 3.68247 3.73505 ARS Argentinean Peso 43.15930 22.93100 16.74880 32.85850 18.73314 16.33204 CLP Chilean Peso 794.37000 737.29000 704.94500 756.93992 732.28973 748.49536 COP Colombian Peso 3,721.81000 3,580.19000 3,169.49000 3,488.43046 3,334.88410 3,376.68116 BRL Brazilian Real 4.43664 3.96728 3.43542 4.30628 3.60584 3.85935 Other countries ILS Israeli Shekel 4.26270 4.16350 4.04770 4.24360 4.06091 4.24812 (*) Source: data processed by the European Central Bank, Reuters and major Central Banks. (**) On August 20, 2018 the Venezuelan Central Bank introduced a new currency (Bolivar Soberano, VES) to replace the previous currency (Bolivar Fuerte, VEF). . The average 2018 exchange rate therefore relates to the period from August 20 to December 31, 2018. b) Research and development Expenditures for research and development activities are represented by external costs, labor costs of dedicated staff and depreciation and amortization. Details are as follows: 2018 2017 2016 (millions of euros) Research and development costs expensed during the year 44 43 44 Development costs capitalized 1,168 1,949 1,704 Total research and development costs (expensed and capitalized) 1,212 1,992 1,748 The decrease in 2018 is mainly connected to the completion of the engineering, expansion and development of next generation networks, i.e. LTE and NGAN, which have not reached maturity on the part of the Parent. In the 2018 separate consolidated income statements, a total of 820 million euros of amortization expense was recorded for development costs, capitalized during the year and in prior years. c) Operating leases In accordance with IAS 17, the Group also considers as non-cancelable In particular: Revenue related The Group has entered into agreements for line lease and hosting which cannot be canceled. At December 31, 2018 and 2017 the amount of lease installments receivables is as follows: At December 31, At December 31, (millions of euros) Within 1 year 89 124 From 2 to 5 years 244 238 Beyond 5 years 134 98 Total 467 460 Expense related The TIM Group has entered into non-cancelable The measurement perimeter shown excludes—in addition to leases already classified as finance leases (mainly real estate leases and leases on equipment and vehicles) whose Asset and Liability value is recognized in the financial statements—also for the variable and accessory components of these leases (e.g. underlying land of leased buildings), as well as leases considered cancelable, as defined above. At December 31, 2018 the amount of lease installments receivable is as follows: At December 31, At December 31, (millions of euros) Within 1 year 153 177 From 2 to 5 years 307 298 Beyond 5 years 35 60 Total 495 535 It should also be noted that, in addition to the above, the IFRS 16 accounting standard—Leases (applied from January 1, 2019) includes subscription charges relating to operating leases outstanding at December 31, 2018 relating to cancelable passive real estate contracts or lease periods classified as cancelable (for example, subsequent lease renewals). For further details on the application of the new IFRS 16 accounting standard, see the Note “Accounting Policies”. d) Public funds Italian Law 124/2017 requires that information on subsidies, contributions, paid assignments and economic benefits of any kind received from Italian public administrations be provided. In relation to this, funds received by the TIM Group are shown in the following table: Distributing entity Intervention segment 2018 collections (millions of euros) Fondimpresa training 5 Fondirigenti training 1 Infratel construction of ultrabroadband infrastructure 106 Ministry of Economic Development construction of mobile network infrastructure 1 technological innovation projects 1 MIUR research and energy efficiency projects 1 Autonomous Province of Trento Eschooling project 1 Total 116

Events Subsequent to December 3

Events Subsequent to December 31, 2018	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Events Subsequent to December 31, 2018	NOTE 42—EVENTS SUBSEQUENT TO DECEMBER 31, 2018 TIM: BOND ISSUE AT 5 YEARS AND 3 MONTHS FOR 1 BILLION 250 MILLION EUROS On January 8, TIM S.p.A. successfully concluded the launch of a fixed-rate bond issue for 1 billion 250 million euros intended for institutional investors, financing itself below its average cost of debt. The yield of the issue, equal to 4.125%, is lower than the Group’s average cost of debt, which was about 4.4% at the end of September 2018. The issue is part of the maturing debt optimization and refunding process. Issuer: Telecom Italia S.p.A. Amount: 1 billion 250 million euros Settlement date: January 11, 2019 Maturity: April 11, 2024 Coupon: 4.000% Issue price: 99.436% Repayment price: 100.000% Actual yield upon maturity, 4.125%, corresponds to a yield of 387.6 basis points above the reference rate (mid swap). The securities were issued as part of the Group 20 billion-euro EMTN program and will be listed on the Luxembourg Stock Exchange. VODAFONE ITALIA AND TELECOM ITALIA INTEND TO BEGIN A NEW PARTNERSHIP FOR MOBILE NETWORK SHARING Vodafone Italia (“Vodafone”) and the Telecom Italia Group (“TIM”) intend to begin a partnership to share the active component of the 5G network, assess the possibility of sharing active devices on the 4G network and expand the current passive sharing agreement; the partnership will allow for more rapid 5G development, across a wider geographical area and at a lower cost. The two companies: · intend to cooperate to adapt their fiber transmission networks for mobile backhauling; · intend to assess merging the respective passive infrastructures into a single entity, for a total of 22,000 towers in Italy; · have signed a Memorandum of Understanding and have agreed to begin exclusive negotiations on the overall project. On February 21, 2019 Vodafone and TIM announced that they had signed a non-binding The Parties are also assessing the feasibility and contents of a possible merger agreement for their respective transmission towers in Italy into a single entity. To allow assessment of these initiatives, Vodafone and TIM have agreed a period of negotiation exclusivity. In relation to the project to share the active network, Vodafone and TIM intend to sign an agreement that would allow joint development of the 5G infrastructure. This project will allow for more rapid 5G development, across a wider geographical area and at a lower cost. Vodafone and TIM will assess the technical and commercial feasibility of jointly installing their active 5G equipment across the country, including in some large cities where each company may wish to maintain strategic flexibility and ensure its ability to respond to the needs of its customers. Vodafone and TIM also intend to assess the possibility of also sharing active equipment on the existing 4G networks, in support of 5G network active sharing; this could also generate further efficiencies. In addition, Vodafone and TIM intend to adapt their respective mobile transmission networks, through the use of higher capacity fiber-optic cables (“Fiber-to-the-Site” Vodafone and TIM also intend to extend their current passive infrastructure network agreement, moving from the current 10,000 sites (about 45% of the two companies’ total tower numbers) to national coverage, with the aim of accelerating and strengthening 5G technology development and of using the network infrastructure more efficiently, in both urban and rural areas. In relation to the potential combination, Vodafone and TIM have agreed to assess a potential transaction to allow them to consolidate approximately 22,000 telecommunication towers in Italy, merging into a single entity the passive network infrastructures of Vodafone with those of Infrastrutture Wireless Italiane (“Inwit”), a listed company 60% owned by TIM. The combination would be structured to create value for all the parties involved. The companies intend to assess the opportunity, where possible, to move active network equipment currently hosted on third-party towers to the new company over time. The expanded tower infrastructure would allow the continued pursuit of the objective to increase other operator hosting, generating further efficiencies. The potential combination would be structured to give Vodafone and TIM the same equity investment and equal governance rights in Inwit, as well to ensure the parties do not have to launch a public tender offer on Inwit shares. As a whole, the initiative aims to promote sector competition and facilitate an open environment for 5G development. All the projects described are covered, in their essential terms, in a non-binding Vodafone and TIM aim to conclude one or more of the Initiatives during 2019.

List of Companies of the Tim Gr

List of Companies of the Tim Group	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
List of Companies of the Tim Group	NOTE 43—LIST OF COMPANIES OF THE TIM GROUP The list is divided by type of investment, consolidation method and operating segment. The following is indicated for each company: name, head office, country and share capital in the original currency, in addition to the percentage holding of share capital, the percentage of voting rights in the ordinary shareholders’ meeting if different than the percentage holding of share capital, and which companies hold the investment. TIM Group Name Head Office Currency ShareCapital % % of Held by PARENT COMPANY TIM S.p.A. MILAN EUR 11,677,002,855 (ITALY) Subsidiaries consolidated line-by-line DOMESTIC BUSINESS UNIT 4G RETAIL S.r.l. MILAN EUR 2,402,241 100.0000 TIM S.p.A. (sale of fixed and mobile telecommunications products and services and all analog and digital broadcasting equipment) (ITALY) ADVANCED CARING CENTER S.r.l. ROME EUR 600,000 100.0000 TELECONTACT CENTER S.p.A. (telemarketing, market research and surveys activities and development) (ITALY) CD FIBER S.r.l. ROME EUR 50,000 100.0000 TIM S.p.A. (design, construction, maintenance and management of network infrastructure services and high-speed electronic communication systems) (ITALY) FLASH FIBER S.r.l. MILAN EUR 30,000 80.000 TIM S.p.A. (development, implementation, maintenance and supply of the fiber network in Italy) (ITALY) H.R. SERVICES S.r.l. L’AQUILA EUR 500,000 100.0000 TIM S.p.A. (personnel training and services) (ITALY) INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. MILAN EUR 600,000,000 60.0333 0,0370 60,0556 TIM S.p.A. INFRASTUTTURE WIRELESS (installation and operation of installations and infrastructure for the management and the sale of telecommunications services) (ITALY) MED-1 RAMAT GAN ILS 55,886,866 100.0000 TELECOM ITALIA SPARKLE (construction and management of submarine cable Lev1) (ISRAEL) NOVERCA S.r.l. ROME EUR 10,000 100.0000 TIM S.p.A. (development and provision of services in the TLC and multimedia sector in Italy and abroad) (ITALY) OLIVETTI S.p.A. IVREA EUR 10,000,000 100.0000 TIM S.p.A. (production and sale of office equipment and information technology services) (TURIN— OLIVETTI SCUOLA (on-line TURIN (ITALY) EUR 100,000 100.0000 OLIVETTI S.p.A. PERSIDERA S.p.A. ROME EUR 21,428,572 70.0000 TIM S.p.A. (purchase, sale and (ITALY) TELECOM ITALIA SAN MARINO S.p.A. BORGO MAGGIORE EUR 1,808,000 100.0000 TIM S.p.A. (San Marino telecommunications management) (REPUBLIC OF TELECOM ITALIA SPARKLE S.p.A. ROME EUR 200,000,000 100.0000 TIM S.p.A. (completion and management of telecommunications services for public and private use) (ITALY) TELECOM ITALIA TRUST TECHNOLOGIES S.r.l. POMEZIA EUR 7,000,000 100.0000 TIM S.p.A. (other operations related to non-classified (ROME – TELECOM ITALIA VENTURES S.r.l. MILAN EUR 10,000 100.0000 TIM S.p.A. (investment holding company) (ITALY) TELECONTACT CENTER S.p.A. NAPLES EUR 3,000,000 100.0000 TIM S.p.A. (telemarketing services) (ITALY) TELEFONIA MOBILE SAMMARINESE S.p.A. BORGO EUR 78,000 51.0000 TELECOM ITALIA SAN (development and management of mobile telecommunications plants and services) (REPUBLIC OF TELENERGIA S.r.l. ROME EUR 50,000 100.0000 TIM S.p.A. (import, export, purchase, sale and trade of electricity) (ITALY) TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A. TURIN EUR 390,000 100.0000 TIM S.p.A. (production and sale of equipment and systems for crypto telecommunications) (ITALY) TI SPARKLE AMERICAS Inc. MIAMI USD 10,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (USA) TI SPARKLE ARGENTINA S.A. BUENOS ARS 9,998,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (ARGENTINA) TI SPARKLE AUSTRIA GmbH VIENNA EUR 2,735,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (AUSTRIA) TI SPARKLE BELGIUM S.P.R.L.—B.V.B.A BRUSSELS EUR 2,200,000 99.9999 TELECOM ITALIA SPARKLE (telecommunications services) (BELGIUM) 0.0001 TI SPARKLE UK Ltd TI SPARKLE BOLIVIA SRL LA PAZ BOB 1,747,600 99.9999 TELECOM ITALIA SPARKLE (managed bandwidth services) (BOLIVIA) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE BRASIL PARTICIPACOES Ltda RIO DE BRL 71,563,866 99.9999 TELECOM ITALIA SPARKLE (investment holding company) (BRAZIL) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE BRASIL TELECOMUNICACIONES Ltda RIO DE BRL 69,337,363 99.9999 TI SPARKLE BRASIL (managed bandwidth services) (BRAZIL) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE BULGARIA EOOD SOFIA BGN 100,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (BULGARIA) TI SPARKLE CHILE S.p.A. SANTIAGO CLP 5,852,430,960 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (CHILE) TI SPARKLE COLOMBIA Ltda BOGOTA’ COP 5,246,906,000 99.9999 TELECOM ITALIA SPARKLE (managed bandwidth services) (COLOMBIA) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE CZECH S.R.O. PRAGUE CZK 6,720,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (CZECH TI SPARKLE FRANCE S.A.S. PARIS EUR 18,295,000 100.0000 TELECOM ITALIA SPARKLE (installation and management of telecommunications services for fixed network and related activities) (FRANCE) TI SPARKLE GERMANY GmbH FRANKFURT EUR 25,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (GERMANY) TI SPARKLE GREECE S.A. ATHENS EUR 368,760 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (GREECE) TI SPARKLE ISRAEL Ltd RAMAT GAN ILS 1,000 100.0000 TELECOM ITALIA SPARKLE (international wholesale telecommunication services) (ISRAEL) TI SPARKLE NETHERLANDS B.V. AMSTERDAM EUR 18,200 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (NETHERLANDS) TI SPARKLE NORTH AMERICA. INC. NEW YORK USD 15,550,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications and promotional services) (USA) TI SPARKLE PANAMA S.A. PANAMA USD 10,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) TI SPARKLE PERU’ S.A. LIMA PEN 57,101,788 99.9999 TELECOM ITALIA SPARKLE (managed bandwidth services) (PERÙ) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE PUERTO RICO LLC SAN JUAN USD 50,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (PUERTO RICO) TI SPARKLE ROMANIA S.R.L. BUCHAREST RON 3,021,560 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (ROMANIA) TI SPARKLE RUSSIA LLC MOSCOW RUB 8,520,000 99.0000 TELECOM ITALIA SPARKLE (telecommunications services) (RUSSIA) 1.0000 TI SPARKLE UK Ltd TI SPARKLE SINGAPORE PTE. Ltd SINGAPORE USD 5,121,120 99.9999 TELECOM ITALIA SPARKLE (telecommunications services) 0.0001 TI SPARKLE NORTH TI SPARKLE SLOVAKIA S.R.O. BRATISLAVA EUR 300,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (SLOVAKIA) TI SPARKLE SPAIN TELECOMMUNICATIONS SL MADRID EUR 1,687,124 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (SPAIN) TI SPARKLE St. Croix LLC VIRGIN ISLANDS USD 10,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (USA) TI SPARKLE SWITZERLAND GmbH ZURICH CHF 2,000,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (SWITZERLAND) TI SPARKLE TURKEY TELEKOMÜNIKASYON ANONIM SIRKETI YENISBONA TRY 65,000,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (ISTANBUL- TI SPARKLE UK Ltd LONDON EUR 3,983,254 100.0000 TELECOM ITALIA SPARKLE (value-added and networking services) (UK) TI SPARKLE VENEZUELA C.A. CARACAS VES 10 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth service) (VENEZUELA) TIMB2 S.r.l. ROME EUR 10,000 99.0000 PERSIDERA S.p.A. (management of television frequency user rights) (ITALY) 1.0000 TIM S.p.A. TIMVISION S.r.l. ROME EUR 50,000 100.0000 TIM S.p.A. (production, co-production, (ITALY) TN FIBER S.r.l. TRENTO EUR 55,918,000 100.0000 TIM S.p.A. (design, construction, maintenance and supply of optical network access to users in the province of Trento) (ITALY) BRAZIL BUSINESS UNIT TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A. RIO DEJANEIRO BRL 7,169,029,859 99.9999 TELECOM ITALIA FINANCE (investment holding company) (BRAZIL) 0.0001 TIM S.p.A. TIM PARTICIPAÇÕES S.A. RIO DEJANEIRO BRL 9,913,414,422 66.5819 66,6035 TIM BRASIL SERVIÇOS E (investment holding company) (BRAZIL) 0.0324 TIM PARTICIPAÇÕES S.A. TIM S.A. RIO DE BRL 13,476,717,765 100.0000 TIM PARTICIPAÇÕES S.A. (telecommunications services) (BRAZIL) OTHER OPERATIONS OLIVETTI DEUTSCHLAND GmbH NURNBERG EUR 25,600,000 100.0000 OLIVETTI S.p.A. (sale of office equipment and supplies) (GERMANY) OLIVETTI UK Ltd NORTHAMPTON GBP 6,295,712 100.0000 OLIVETTI S.p.A. (sale of office equipment and supplies) (UK) TELECOM ITALIA CAPITAL S.A. LUXEMBOURG EUR 2,336,000 100.0000 TIM S.p.A. (financial company) (LUXEMBOURG) TELECOM ITALIA FINANCE S.A. LUXEMBOURG EUR 1,818,691,979 100.0000 TIM S.p.A. (financial company) (LUXEMBOURG) TELECOM ITALIA LATAM PARTICIPACOES E GESTAO ADMINISTRATIVA Ltda SAO PAULO BRL 118,925,803 100.0000 TIM S.p.A. (provision of telecommunications and representation services) (BRAZIL) TIAUDIT COMPLIANCE LATAM S.A. (IN LIQUIDATION) RIO DE BRL 1,500,000 69.9996 TIM S.p.A. (internal auditing services) (BRAZIL) 30.0004 TIM BRASIL SERVICOS E TIESSE S.c.p.A. IVREA EUR 103,292 61.0000 OLIVETTI S.p.A. (installation and assistance for electronic, IT, telematics and telecommunications equipment) (TURIN-ITALY) TIM TANK S.r.l. MILAN EUR 18,600,000 100.0000 TIM S.p.A. (fund and securities investments) (ITALY) Associates and joint ventures accounted for using the equity method ALFIERE S.p.A. (*) ROME EUR 9,250,000 50.0000 TIM S.p.A. (real estate management) (ITALY) AREE URBANE S.r.l. (IN LIQUIDATION) MILAN EUR 100,000 32.6200 TIM S.p.A. (real estate management) (ITALY) ASSCOM INSURANCE BROKERS S.r.l. MILAN EUR 100,000 20.0000 TIM S.p.A. (insurance brokerage) (ITALY) CLOUDESIRE.COM S.r.l. PISA EUR 11,671 (** ) TELECOM ITALIA VENTURES (design, implementation and marketing of a marketplace platform for the sale of a software as-a-service (ITALY) CONSORZIO ANTENNA COLBUCCARO ASCOLI PICENO EUR 121,000 20.0000 PERSIDERA S.p.A. (installation, management and maintenance ofmetal pylons complete with workstations for device recovery) (ITALY) CONSORZIO ANTENNA MONTECONERO SIROLO EUR 51,100 22.2211 PERSIDERA S.p.A. (multimedia services) (ANCONA-ITALY) CONSORZIO E O (IN LIQUIDATION) ROME EUR 30,987 50.0000 TIM S.p.A. (training services) (ITALY) ECO4CLOUD S.r.l. RENDE EUR 19,532 (**) TELECOM ITALIA VENTURES (development, production and sale of innovative products or services with high technological value (COSENZA-ITALY) KOPJRA S.r.l. SCHIO EUR 16,207 22.8491 TELECOM ITALIA VENTURES (development , production and sale of innovative products or services with high-tech value) (VICENZA-ITALY) MOVENDA S.p.A. ROME EUR 133,333 24.9998 TELECOM ITALIA FINANCE (design, construction and diffusion of internet sites, products and computer media) (ITALY) NORDCOM S.p.A. MILAN EUR 5,000,000 42.0000 TIM S.p.A. (application service provider) (ITALY) OILPROJECT S.r.l. MILAN EUR 13,556 (**) TELECOM ITALIA VENTURES (research, development, marketing and patenting of all intellectual property related to technology, information technology and TLC) (ITALY) PEDIUS S.r.l. ROME EUR 181 (**) TELECOM ITALIA VENTURES (implementation of specialized telecommunications applications, telecommunications services over telephone connections, VoIP services) (ITALY) TIGLIO I S.r.l. MILAN EUR 5,255,704 47.8019 TIM S.p.A. (real estate management) (ITALY) TIGLIO II S.r.l. (IN LIQUIDATION) MILAN EUR 10,000 49.4700 TIM S.p.A. (real estate management) (ITALY) W.A.Y. S.r.l. TURIN EUR 136,383 39.9999 OLIVETTI S.p.A. (development and sale of geolocation products and systems for security and logistics) (ITALY) WIMAN S.r.l. MATTINATA EUR 22,233 (**) TELECOM ITALIA VENTURES (development, management and implementation of platforms for social-based Wi-Fi (FOGGIA-ITALY) Other significant investments CONSORZIO ANTENNA TOLENTINO RECANATI EUR 86,000 16.6674 PERSIDERA S.p.A. (installation, management and maintenance of pylons complete with workstation for device recovery) (MACERATA- CONSORZIO EMITTENTI RADIOTELEVISIVE BOLOGNA EUR 119,309 18.6600 PERSIDERA S.p.A. (broadcasting activities) (ITALY) CONSORZIO HEALTH INNOVATION HUB (IN LIQUIDATION) TRENTO EUR 48,000 12.5000 TIM S.p.A. (development of the market for systems and services for the sector social and health) (ITALY) DAHLIA TV S.p.A. (IN LIQUIDATION) ROME EUR 11,318,833 10.0800 TIM S.p.A. (pay-per-view (ITALY) FIN.PRIV. S.r.l. MILAN EUR 20,000 14.2900 TIM S.p.A. (financial company) (ITALY) IGOON. S.r.l. NAPLES EUR 16,498 14.2805 TELECOM ITALIA VENTURES (development of mobile platforms and applications able to provide user with innovative solutions for organizing and sharing all their digital content) (ITALY) INNAAS S.r.l. ROME EUR 108,700 15.2548 TELECOM ITALIA VENTURES (design, development and sale of high-tech software and hardware) (ITALY) ITALBIZ.COM Inc. DELAWARE USD 4,721 19.5000 TIM S.p.A. (internet services) (USA) MIX S.r.l. MILAN EUR 1,000,000 11.0937 TIM S.p.A. (internet service provider) (ITALY) (*) Joint Venture. (**) Associates over which TIM S.p.A., directly and indirectly, exercise significant influence pursuant to IAS 28 (Investments in Associates and Joint Ventures).

Accounting Policies (Policies)

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Statement [LineItems]
Going concern	Going concern The consolidated financial statements for 2018 have been prepared on a going concern basis as there is the reasonable expectation that TIM will continue its operational activities in the foreseeable future (and in any event with a time horizon of at least twelve months). In particular, the following factors have been taken into consideration: · the main risks and uncertainties (that are for the most part of an external nature) to which the Group and the various activities of the TIM Group are exposed: · changes in the general macroeconomic situation in the Italian, European and Brazilian markets, as well as the volatility of financial markets in the Eurozone also as a result of the “Brexit” referendum in the United Kingdom; · variations in business conditions, also related to competition; · changes to laws and regulations (price and rate variations); · outcomes of legal disputes and proceedings with regulatory authorities, competitors and other parties; · financial risks (interest rate and/or exchange rate trends, changes in the Group’s credit rating by rating agencies); · the optimal mix between risk capital and debt capital as well as the policy for the remuneration of risk capital, as described in the paragraph “Share capital information” under the Note “Equity”; · the policy for financial risk management (market risk, credit risk and liquidity risk), as described in the Note “Financial risk management”. Based on these factors, the Management believes that, at the present time, there are no elements of uncertainty regarding the Group’s ability to continue as a going concern.
Principles of consolidation	Principles of consolidation The consolidated financial statements include the financial statements of all subsidiaries from the date control over such subsidiaries commences until the date that control ceases. The date of all the subsidiaries’ financial statements coincides with that of the Parent TIM. Control exists when the Parent TIM S.p.A. has all the following: · power over the investee, which includes the ability to direct the relevant activities of the investee, i.e. the activities that significantly affect the investee’s returns; · exposure, or rights, to variable returns from its involvement with the investee; · the ability to use its power over the investee to affect the amount of the investor’s returns. TIM assesses whether it controls an investee if facts and circumstances indicate that there are changes in one or more of the three control elements. In the preparation of the consolidated financial statements, assets, liabilities, revenues and expenses of the consolidated companies are consolidated on a line-by-line non-controlling Under IFRS 10 (Consolidated financial statements), the total comprehensive loss (including the profit or loss for the year) is attributed to the owners of the parent and to the non-controlling non-controlling All intragroup balances and transactions and any gains and losses arising from intragroup transactions are eliminated in consolidation. The carrying amount of the investment in each subsidiary is eliminated against the corresponding share of equity in each subsidiary, after adjustment, if any, to fair value at the acquisition date of control. At that date, goodwill is recorded as an intangible asset, as described below, whereas any gain from a bargain purchase or negative goodwill is recognized in the separate consolidated income statements. Assets and liabilities of foreign consolidated subsidiaries expressed in currencies other than euro are translated using the exchange rates in effect at the statement of financial position date (the current method); income and expenses are translated at the average exchange rates for the year. Exchange differences resulting from the application of this method are classified as equity until the entire disposal of the investment or upon loss of control of the foreign subsidiary. Upon partial disposal, without losing control, the proportionate share of the cumulative amount of exchange differences related to the disposed interest is recognized in non-controlling Goodwill and fair value adjustments arising from the allocation of the purchase price of a foreign entity are recorded in the relevant foreign currency and are translated using the year-end Under IFRS 10, changes in a parent’s ownership interest in a subsidiary that do not result in a loss or acquisition of control are accounted for as equity transactions. In such circumstances the carrying amounts of the controlling and non-controlling non-controlling Under IFRS 10, the parent company in case of loss of control of a subsidiary: derecognizes: · the assets (including any goodwill) and the liabilities; · the carrying amount of any non-controlling recognizes: · the fair value of the consideration received, if any, from the transaction; · any investment retained in the former subsidiary at its fair value at the date when control is lost; · any gain or loss, resulting from the transaction, in the separate consolidated income statements; · the reclassification to the separate consolidated income statements, of the amounts previously recognized in other comprehensive income in relation to the subsidiary. In the consolidated financial statements, investments in associates and joint ventures are accounted for using the equity method, as provided, respectively, by IAS 28 (Investments in Associates and Joint Ventures) and IFRS 11 (Joint Arrangements). Associates are enterprises in which the Group holds at least 20% of the voting rights or exercises significant influence, but no control or joint control over the financial and operating policies. A joint venture is a joint arrangement whereby the parties that have joint control of the arrangement have rights to the net assets of the arrangement. Joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Associates and joint ventures are included in the consolidated financial statements from the date that significant influence or joint control commences until the date such significant influence or joint control ceases. Under the equity method, on initial recognition the investment in an associate or a joint venture is recognized at cost, and the carrying amount is increased or decreased to recognize the investor’s share of the profit or loss of the investee after the date of acquisition. The investor’s share of the investee’s profit or loss is recognized in the investor’s income statements. Dividends received from an investee reduce the carrying amount of the investment. Adjustments to the carrying amount may also be necessary for changes in the investee’s other comprehensive income (i.e. those arising from foreign exchange translation differences). The investor’s share of those changes is recognized in the investor’s other comprehensive income. If an investor’s share of losses of an associate or a joint venture equals or exceeds its interest in the associate or joint venture, the investor discontinues recognizing its share of further losses. After the investor’s interest is reduced to zero, additional losses are provided for, and a liability is recognized, only to the extent that the investor has incurred legal or constructive obligations or made payments on behalf of the associate or joint venture. If the associate or joint venture subsequently reports profits, the investor resumes recognizing its share of those profits only after its share of the profits equals the share of losses not recognized. Gains and losses resulting from “upstream” and “downstream” transactions between an investor (including its consolidated subsidiaries) and its associate or joint venture are recognized in the investor’s financial statements only to the extent of unrelated investors’ interests in the associate or joint venture. Gains and losses arising from transactions with associates or joint ventures are eliminated to the extent of the Group’s interest in those entities.
Intangible assets	Intangible assets Goodwill Under IFRS 3 ( Business Combinations a) the aggregate of: · the consideration transferred (measured in accordance with IFRS 3; it is generally recognized on the basis of the acquisition date fair value); · the amount of any non-controlling non-controlling · in a business combination achieved in stages, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree; b) the acquisition date fair value of the identifiable assets acquired net of the identifiable liabilities assumed measured at the acquisition date of control. IFRS 3 requires, inter alia · incidental costs incurred in connection with a business combination are charged to the separate consolidated income statement; · in a business combination achieved in stages, the acquirer shall remeasure its previously held equity interest in the acquiree at its fair value at the acquisition date of control and recognize the resulting gain or loss, if any, in the separate consolidated income statement. Goodwill is classified in the statement of financial position as an intangible asset with an indefinite useful life. Goodwill initially recorded is subsequently reduced only for impairment losses. Further details are provided in the accounting policy Impairment of tangible and intangible assets—Goodwill, reported below. In case of loss of control of a subsidiary, the relative amount of goodwill is taken into account in calculating the gain or loss on disposal. Development costs Costs incurred internally for the development of new products and services represent either intangible assets (mainly costs for software development) or tangible assets. These costs are capitalized only when all the following conditions are satisfied: i) the cost attributable to the development phase of the asset can be measured reliably, ii) there is the intention, the availability of financial resources and the technical ability to complete the asset and make it available for use or sale and iii) it can be demonstrated that the asset will be able to generate future economic benefits. Capitalized development costs comprise only expenditures that can be attributed directly to the development process for new products and services. Capitalized development costs are amortized systematically over the estimated product or service life so that the amortization method reflects the way which the asset’s future economic benefits are expected to be consumed by the entity. Other intangible assets with a finite useful life Other purchased or internally-generated intangible assets with a finite useful life are recognized as assets, in accordance with IAS 38 (Intangible Assets), where it is probable that the use of the asset will generate future economic benefits and where the cost of the asset can be measured reliably. Such assets are recorded at purchase or production cost and amortized on a straight-line basis over their estimated useful lives; the amortization rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized prospectively in the separate consolidated income statements.
Tangible assets	Tangible assets Property, plant and equipment owned Property, plant and equipment owned is stated at acquisition or production cost. Subsequent expenditures are capitalized only if they increase the future economic benefits embodied in the related item of property, plant and equipment. All other expenditures are expensed as incurred. Cost also includes the expected costs of dismantling the asset and restoring the site if a legal or constructive obligation exists. The corresponding liability is recognized at its present value as a provision in the statement of financial position. These capitalized costs are depreciated and charged to the separate consolidated income statements over the useful life of the related tangible assets. The recalculation of estimates for dismantling costs, discount rates and the dates in which such costs are expected to be incurred is reviewed annually, at each financial year-end. Depreciation of property, plant and equipment owned is calculated on a straight-line basis over the estimated useful life of the assets. The depreciation rates are reviewed annually and revised if the current estimated useful life is different from that estimated previously. The effect of such changes is recognized prospectively in the separate consolidated income statements. Land, including land pertaining to buildings, is not depreciated. Assets held under finance leases Assets held under finance leases, in which substantially all the risks and rewards of ownership are transferred to the Group, are initially recognized as assets of the Group at fair value or, if lower, at the present value of the minimum lease payments, including bargain purchase options. The corresponding liability due to the lessor is included in the statement of financial position under financial liabilities. Lease payments are apportioned between interest (recognized in the separate consolidated income statements) and principal (recognized as a deduction from liabilities). This split is determined so as to produce a constant periodic rate of interest on the remaining balance of the liability. Furthermore, gains realized on sale and leaseback transactions that are recorded under finance lease contracts are deferred over the lease term. The depreciation policy for depreciable assets held under finance leases is consistent with that for depreciable assets that are owned. If there is no reasonable certainty over the acquisition of the ownership of the asset at the end of the lease period, assets held under finance leases are depreciated over the shorter of the lease term and their useful lives. Leases where the lessor retains substantially all the risks and rewards of ownership of the assets are accounted for as operating leases. Operating lease rentals are charged to the separate consolidated income statements on a straight-line basis over the lease term. When a lease includes both land and buildings, an entity assesses the classification of each element as a finance or an operating lease separately.
Capitalized borrowing costs	Capitalized borrowing costs Under IAS 23 ( Borrowing Costs Capitalized borrowing costs are recorded in the separate consolidated income statements and deducted directly from the “finance expense” line item to which they relate.
Impairment of intangible and tangible assets	Impairment of intangible and tangible assets Goodwill Goodwill is tested for impairment at least annually or more frequently whenever events or changes in circumstances indicate that goodwill may be impaired, as set forth in IAS 36 ( Impairment of Assets The test is generally conducted at the end of every year so the date of testing is the year-end To test for impairment, goodwill is allocated at the date of acquisition to each cash-generating unit or group of cash-generating units which is expected to benefit from the acquisition. If the carrying amount of the cash-generating unit (or group of cash-generating units) exceeds the recoverable amount, an impairment loss is recognized in the separate consolidated income statements. The impairment loss is first recognized as a deduction of the carrying amount of goodwill allocated to the cash-generating unit (or group of cash-generating units) and then only applied to the other assets of the cash-generating unit in proportion to their carrying amount, up to the recoverable amount of the assets with a finite useful life. The recoverable amount of a cash-generating unit (or group of cash-generating units) to which goodwill is allocated is the higher of fair value less costs to sell and its value in use. In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. The future cash flows are those arising from an explicit time horizon between three and five years as well as those extrapolated to estimate the terminal value. The long-term growth rate used to estimate the terminal value of the cash-generating unit (or group of cash-generating units) is assumed not to be higher than the average long-term growth rate of the segment, country or market in which the cash-generating unit (or group of cash-generating units) operates. The value in use of cash-generating units denominated in foreign currency is estimated in the local currency by discounting cash flows to present value on the basis of an appropriate rate for that currency. The present value obtained is translated to euro at the spot rate on the date of the impairment test (in the case of the TIM Group, the date of the financial statements). Future cash flows are estimated by referring to the current operating conditions of the cash generating unit (or group of cash-generating units) and, therefore, do not include either benefits originating from future restructuring for which the entity is not yet committed, or future investments for the improvement or optimization of the cash-generating unit. For the purpose of calculating impairment, the carrying amount of the cash-generating unit is established based on the same criteria used to determine the recoverable amount of the cash generating unit, excluding surplus assets (that is, financial assets, deferred tax assets and net non-current non-controlling After conducting the goodwill impairment test for the cash-generating unit (or groups of cash-generating units), a second level of impairment testing is carried out which includes the corporate assets which do not generate positive cash flows and which cannot be allocated by a reasonable and consistent criterion to the single units. At this second level, the total recoverable amount of all cash-generating units (or groups of cash-generating units) is compared to the carrying amount of all cash-generating units (or groups of cash-generating units), including also those cash-generating units to which no goodwill was allocated, and the corporate assets. Intangible and tangible assets with a finite useful life At every closing date, the Group assesses whether there are any indications of impairment of intangible and tangible assets with a finite useful life. Both internal and external sources of information are used for this purpose. Internal sources include obsolescence or physical damage, and significant changes in the use of the asset and the economic performance of the asset compared to estimated performance. External sources include the market value of the asset, changes in technology, markets or laws, trend in market interest rates and the cost of capital used to evaluate investments, and an excess of the carrying amount of the net assets of the Group over market capitalization. When indicators of impairment exist, the carrying amount of the assets is reduced to the recoverable amount. The recoverable amount of an asset is the higher of fair value less costs to sell and its value in use. In calculating the value in use, the estimated future cash flows are discounted to present value using a discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. Where it is not possible to estimate the recoverable amount of an individual asset, the Group estimates the recoverable amount of the cash-generating unit to which the asset belongs. Impairment losses are recognized in the separate consolidated income statements. When the conditions that gave rise to an impairment loss no longer exist, the carrying amount of the asset or cash-generating unit is increased to the revised estimate of its recoverable amount, up to the carrying amount that would have been recorded had no impairment loss been recognized. The reversal of an impairment loss is recognized as income in the separate consolidated income statements.
Financial instruments	Financial instruments Business models for managing the financial assets Under IAS 39, financial assets were classified and measured according to the categories established by IAS 39 (Loans and Receivables, Financial assets Held-to-Maturity, Under IFRS 9, the business models for financial assets (other than trade receivables due from customers) have been defined on the basis of how the financial instruments are managed and their cash flows used; this is done to ensure an adequate level of financial flexibility and to best manage, in terms of risks and returns, the financial resources immediately available through the treasuries of Group companies and in accordance with the strategies set forth by the Parent TIM. As required by IFRS 9, the business models adopted by the TIM Group are: · Hold to Collect · Hold to Collect and Sell · Hold to Sell The comparison between the new category determined in compliance with IFRS 9 with the original category determined in compliance with IAS 39 as of January 1, 2018 is provided elsewhere herein in Note— Supplementary disclosures on financial instruments. Other investments Other investments (other than those in subsidiaries, associates and joint ventures) are classified as non-current Other investments (other than those in subsidiaries, associates and joint ventures) are classified in “financial assets measured at fair value through consolidated profit or loss” (FVTPL) as current assets. At initial recognition of each investment, IFRS 9 provides the irrevocable election of recognizing such investments as “financial assets measured at fair value through other consolidated comprehensive income” (FVTOCI) as non-current Other investments classified as “financial assets measured at fair value through other comprehensive income” are measured at fair value; changes in the fair value of these investments are recognized in a specific equity reserve under the other components of the statements of comprehensive income ( Reserve for financial assets measured at fair value through other comprehensive income Changes in the value of other investments classified as “financial assets at fair value through profit or loss” are recognized directly in the separate consolidated income statements. Securities other than investments Securities other than investments included among non-current Securities other than investments classified as current assets are those that, by decision of the directors, are intended to be kept in the Group’s portfolio for a period of not more than 12 months, and are classified: · as “financial assets measured at amortized cost” (AC) when held to maturity (originally more than 3 months but less than 12 months, or, with an original maturity of more than 12 months but the remaining maturity at the date of purchase is more than 3 months but less than 12 months); · as “financial assets measured at fair value through other consolidated comprehensive income” (FVTOCI) when held in the scope of a business model whose objective is to sell the financial asset and/or collect the contractual flows. The “Reserve for financial assets measured at fair value through other consolidated comprehensive income” is reversed to the separate consolidated income statements when the financial asset is disposed of or impaired; · as “financial assets measured at fair value through consolidated profit or loss” (FVTPL) in the other cases. Cash and cash equivalents Cash and cash equivalents are recorded, according to their nature, at nominal value or amortized cost. Cash equivalents are short-term and highly liquid investments that are readily convertible to known amounts of cash, subject to an insignificant risk of change in value and their original maturity or the remaining maturity at the date of purchase does not exceed 3 months. Impairment of financial assets At every closing date, assessments are made as to whether there is any objective evidence that a financial asset or a group of financial assets may be impaired. Under IAS 39. if any of the above-mentioned evidence exists, an impairment loss is recognized in the separate consolidated income statement for financial assets measured at cost or amortized cost. Under IFRS 9, the impairment of financial assets is based on the expected credit loss model. In particular: · impairment on trade receivables and on contract assets is carried out using the simplified approach that involves estimating the loss expected over the life of the receivable at the time of initial recognition and on subsequent measurements. For each customer segment, the estimate is principally made by calculating the average expected uncollectibility, based on historical and statistical indicators, possibly adjusted using forward-looking elements. For some categories of receivables characterized by specific risk elements, specific measurements are made on individual credit positions; · impairment on financial assets other than trade receivables is carried out on the basis of a general model which estimates expected credit losses over the following 12 months, or over the residual life of the asset in the event of a substantial increase in its credit risk. Derivatives As allowed by IFRS 9, the TIM Group decided to continue to apply the hedge accounting provisions contained in IAS 39, instead of those of IFRS 9. Derivatives are used by the TIM Group to manage its exposure to exchange rate and interest rate risks and to diversify the parameters of debt so that costs and volatility can be reduced to within pre-established In accordance with IAS 39, derivative financial instruments qualify for hedge accounting only when: · at the inception of the hedge, the hedging relationship is formally designated and documented; · the hedge is expected to be highly effective; · its effectiveness can be reliably measured; · the hedge is highly effective throughout the financial reporting periods for which it is designated. All derivative financial instruments are measured at fair value in accordance with IAS 39. When derivative financial instruments qualify for hedge accounting, the following accounting treatment applies: · Fair value hedge—Where a derivative financial instrument is designated as a hedge of the exposure to changes in fair value of an asset or liability due to a particular risk, the gain or loss from re-measuring · Cash flow hedge—Where a derivative financial instrument is designated as a hedge of the exposure to variability in cash flows of an asset or liability or a highly probable expected transaction, the effective portion of any gain or loss on the derivative financial instrument is recognized directly in a specific equity reserve (Reserve for cash flow hedges). The cumulative gain or loss is removed from equity and recognized in the separate consolidated income statements at the same time the hedged transaction affects the separate consolidated income statements. The gain or loss associated with the ineffective portion of a hedge is recognized in the separate consolidated income statements immediately. If the hedged transaction is no longer probable, the cumulative gains or losses included in the equity reserve are immediately recognized in the separate consolidated income statements. If hedge accounting is not appropriate, gains or losses arising from the measurement at fair value of derivative financial instruments are directly recognized in the separate consolidated income statements. Financial liabilities Financial liabilities comprise financial debt, including advances received on the assignment of accounts receivable, and other financial liabilities such as derivatives and finance lease obligations. In accordance with IFRS 9, they also include trade and other payables. Financial liabilities other than derivatives are initially recognized at fair value and subsequently measured at amortized cost. Financial liabilities hedged by derivative instruments designed to manage exposure to changes in fair value of the liabilities (fair value hedge derivatives) are measured at fair value in accordance with the hedge accounting principles of IAS 39. Gains and losses arising from re-measurement re-measurement Financial liabilities hedged by derivative instruments designed to manage exposure to variability in cash flows (cash flow hedge derivatives) are measured at amortized cost in accordance with the hedge accounting principles of IAS 39.
Sales of receivables	Sales of receivables The TIM Group carries out sales of receivables under factoring contracts. These sales, in the majority of cases, are characterized by the transfer of substantially all the risks and rewards of ownership of the receivables to third parties, meeting the requirements of IFRS 9 for derecognition. Specificservicing contracts, through which the buyer confers a mandate to TIM S.p.A. for the collection and management of the receivables, leave the current Company/customer relationship unaffected.
Amounts due from customers on construction contracts	Amounts due from customers on construction contracts Amounts due from customers on construction contracts, regardless of the duration of the contracts, are recognized in accordance with the percentage of completion method and classified under current assets.
Inventories	Inventories Inventories are measured at the lower of purchase and production cost and estimated realizable value; cost is determined on a weighted average basis. Provision is made for obsolete and slow-moving inventories based on their expected future use and estimated realizable value.
Non-current assets held for sale/Discontinued operations	Non-current Non-current non-current An operating asset sold ( Discontinued Operations · represents a major line of business or geographical area of operations; · is part of a single coordinated plan to dispose of a separate major line of business or geographical area of operations; or · is a subsidiary acquired exclusively with a view to resale. The results arising from Discontinued Operations—whether disposed of or classified as held for sale—are shown separately in the separate consolidated income statements, net of tax effects. The corresponding values for the previous periods, where present, are reclassified and reported separately in the separate consolidated income statements, net of tax effects, for comparative purposes. Non-current Any subsequent impairment losses are recognized as a direct adjustment to the non-current An entity shall recognize a gain for any subsequent increase in fair value less costs to sell of an asset, but not in excess of the cumulative impairment loss that has been recognized. As required by IFRS 5 ( Non-current non-current The finance expenses and other expenses attributable to the liabilities of a disposal group classified as held for sale shall continue to be recognized.
Employee benefits	Employee benefits Provision for employee severance indemnity Employee severance indemnity, mandatory for Italian companies pursuant to Article 2120 of the Italian Civil Code, is deferred compensation and is based on the employees’ years of service and the compensation earned by the employee during the service period. Under IAS 19 ( Employee Benefits The remeasurements of actuarial gains and losses are recognized in other components of comprehensive income. Service cost of Italian companies that employ less than 50 employees, as well as interest expenses related to the “time value” component of the actuarial calculations (the latter classified as Finance expenses), are recognized in the separate consolidated income statements. Starting from January 1, 2007, Italian Law introduced for employees the choice to direct their accruing indemnity either to supplementary pension funds or leave the indemnity as an obligation of the Company. Companies that employ at least 50 employees should transfer the employee severance indemnity to the “Treasury fund” managed by INPS, the Italian Social Security Institute. Consequently, the Group’s obligation to INPS and the contributions to supplementary pension funds take the form, under IAS 19, of a “Defined contribution plan”. Equity compensation plans The companies of the Group provide additional benefits to certain managers of the Group through equity compensation plans (for example stock options and long-term incentive plans). The above plans are recognized in accordance with IFRS 2 ( Share-Based Payment In accordance with IFRS 2, such plans represent a component of the beneficiaries’ compensation. Therefore, for the plans that provide for compensation in equity instruments, the cost is represented by the fair value of such instruments at the grant date, and is recognized in the separate consolidated income statements in “Employee benefits expenses” over the period between the grant date and vesting date with a contra-entry to an equity reserve denominated “Other equity instruments”. Changes in the fair value subsequent to the grant date do not affect the initial measurement. At the end of each year, adjustments are made to the estimate of the number of rights that will vest up to expiry. The impact of the change in estimate is deducted from “Other equity instruments” with a contra-entry to “Employee benefits expenses”. For the portion of the plans that provide for the payment of compensation in cash, the amount is recognized in liabilities as a contra-entry to “Employee benefits expenses”; at the end of each year such liability is measured at fair value.
Provisions	Provisions The Group records provisions for risks and charges when it has a present obligation, legal or constructive, to a third party, as a result of a past event, when it is probable that an outflow of Group resources will be required to satisfy the obligation and when the amount of the obligation can be estimated reliably. If the effect of the time value is material, and the payment date of the obligations can be reasonably estimated, provisions to be accrued are the present value of the expected cash flows, taking into account the risks associated with the obligation. The increase in the provision due to the passage of time is recognized in the separate consolidated income statements as “Finance expenses”.
Government grants	Government grants Government grants are recognized when there is a reasonable assurance that they will be received and that the Group will satisfy all the conditions established for their granting by the government, government entities and equivalent local, national or international entities. Government grants are recognized in the separate income statement, on a straight-line basis, over the periods in which the Group recognizes the expenses that the grants are intended to offset as costs. Government grants related to assets received for the acquisition and/or construction of non-current
Treasury shares	Treasury shares Treasury shares are recognized as a deduction from equity. In particular, the treasury shares are reported as a deduction from the share capital issued in the amount corresponding to the “accounting par value”, that is the ratio of total share capital and the number of issued shares, while the excess cost of acquisition over the accounting par value is presented as a deduction from “Other reserves and retained earnings (accumulated losses), including profit (loss) for the year”.
Foreign currency transactions	Foreign currency transactions Transactions in foreign currencies are recorded at the foreign exchange rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated at the foreign exchange rate prevailing at the statement of financial position date. Exchange differences arising from the settlement of monetary items or from their conversion at rates different from those at which they were initially recorded during the year or at the end of the prior year, are recognized in the separate consolidated income statements.
Revenues	Revenues Revenues are the gross inflows of economic benefits during the period arising in the course of the ordinary activities of an entity. Amounts collected on behalf of third parties such as sales taxes, goods and services taxes and value added taxes are not economic benefits which flow to the entity and do not result in increases in equity. Therefore, they are excluded from revenues. The process underlying recognition of revenues follows the steps set out in IFRS 15: · identification of the contract · identification of the performance obligations · determination of the transaction price · allocation of the transaction price to the performance obligations Transaction price related to activating the connectivity service is not a performance obligation; therefore, under IFRS 15, it is allocated to the contractual performance obligations (typically to services). Under IAS 18, they were deferred over the expected duration of the relationship with the customer. For offerings which include the sale of devices and service contracts (bundle offerings), according to IFRS 15, the Group allocates the contractual transaction price to the performance obligations of the contract, proportionately to the stand alone selling prices of the single performance obligations. Under IAS 18, revenues were allocated to the handset sale, for the residual of the amount paid by the customer exceeding the services value; · recognition of revenues · Revenues from services rendered Revenues from services rendered are recognized in the separate income statements according to the stage of completion of the service, that is based on actual consumption. Traffic revenues from interconnection and roaming are reported gross of the amounts due to other TLC operators. Revenues for delivering information or other content are recognized on the basis of the amount invoiced to the customer, when the service is rendered directly by the Group. In the event that the Group is acting as agent (for example non-geographic Revenues from prepaid traffic are recorded on the basis of effective consumption. Deferred revenues for traffic already collected but not yet consumed are recorded in “Trade and miscellaneous payables and other current liabilities” in the consolidated statements of financial position. Revenues for services rendered are generally invoiced and collected monthly (for retail customers) or in 40-60 · Revenues from sales Revenues from sales (telephone and other products) are recognized on delivery, which represents the time of control transfer to the customers. The devices sold separately from services are invoiced at the time of delivery; collection takes place on demand or based on installment plans (up to 48 monthly installments). The devices sold as part of bundle offerings are invoiced at the time of delivery and usually collected in 24 monthly installments. Some contracts (typically the sale of equipment by instalments) include an implicit financial component, which, if significant, results in a reduction in revenues recognized at the time of sale and the subsequent recognition of financial income at the time of collection of the related instalments; this component is determined by using a discount rate that reflects a hypothetical customer loan transaction at the contract date reflecting the creditworthiness by type of customer. The Group avails itself of the practical expedient of not recognizing said component if it is insignificant or the collection extension is less than 12 months. Recognition of revenues may result in the recognition of a contract asset or liability. In particular: · Contract assets · Contract liabilities Contract costs (incremental costs of obtaining a contract and costs to fulfill a contract; for example, the activation costs and the costs for sales network commissions) are extended and recognized in the consolidated income statements based on the expected term of the contractual relationship with the customers (on average, 3 years for the mobile business and 7 years for the fixed business). The TIM Group makes use of the practical expedient provided for by IFRS 15, which allows the incremental costs of obtaining a contract to be recorded in full in the consolidated income statement, if the period of deferral does not exceed 12 months.
Research costs and advertising expenses	Research costs and advertising expenses Research costs and advertising expenses are charged directly to the separate consolidated income statements in the year in which they are incurred.
Finance income and expenses	Finance income and expenses Finance income and expenses are recognized on an accrual basis and include: interest accrued on the related financial assets and liabilities using the effective interest rate method, the changes in fair value of derivatives and other financial instruments measured at fair value through profit or loss, gains and losses on foreign exchange and financial instruments (including derivatives).
Dividends	Dividends Dividends received from companies other than subsidiaries, associates and joint ventures are recognized in the separate consolidated income statements in the year in which they become receivable following the resolution by the shareholders’ meeting for the distribution of dividends of the investee companies. Dividends payable to third parties are reported as a change in equity in the year in which they are approved by the shareholders’ meeting.
Income Tax Expenses (current and deferred)	Income Tax Expenses (current and deferred) Income tax expense includes all taxes calculated on the basis of the taxable income of the companies of the Group. The income tax expense is recognized in the separate consolidated income statements, except to the extent that they relate to items directly charged or credited to equity, in which case the related tax effect is recognized in the relevant equity reserves. In the Statement of comprehensive income, the amount of income tax expense relating to each item included as “Other components of the Consolidated Statements of Comprehensive income” is indicated. The income tax expense that could arise on the remittance of a subsidiary’s undistributed earnings is only recognized where there is the actual intention to remit such earnings. Deferred tax liabilities / assets are recognized using the “Balance sheet liability method”. They are calculated on all temporary differences that arise between the tax base of an asset or liability and the carrying amounts in the consolidated financial statements, except for non tax-deductible Taxes, other than income taxes, are included in “Other operating expenses”.
Earnings per share	Earnings per share Basic earnings per ordinary share is calculated by dividing the Group’s profit attributable to ordinary shares by the weighted average number of ordinary shares outstanding during the year, and excluding treasury shares. Similarly, basic earnings per savings share is calculated by dividing the Group’s profit attributable to savings shares by the weighted average number of savings shares outstanding during the year. For diluted earnings per ordinary share, the weighted average number of shares outstanding during the year is adjusted by all dilutive potential shares (for example, the exercise of rights on shares with dilutive effects). The Group profit is also adjusted to reflect the impact of these transactions net of the related tax effects.
Use of estimates	Use of estimates The preparation of consolidated financial statements and related disclosure in conformity with IFRS requires management to make estimates and assumptions based also on subjective judgments, past experience and assumptions considered reasonable and realistic in relation to the information known at the time of the estimate. Such estimates have an effect on the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the amount of revenues and costs during the year. Actual results could differ, even significantly, from those estimates owing to possible changes in the factors considered in the determination of such estimates. Estimates are reviewed periodically.
New Standards and Interpretations issued by IASB and in force from January 1, 2018	New Standards and Interpretations issued by IASB and in force from January 1, 2018 In accordance with IAS 8 ( Accounting Policies, Changes in Accounting Estimates and Errors Revenue from Contracts with Customers Financial Instruments IFRIC 22—Foreign Currency Transactions and Advance Consideration IFRIC 22 clarifies which exchange rate to use in transactions that involve advance consideration paid or received in a foreign currency. The adoption of said interpretation had no impact on these consolidated financial statements at December 31, 2018. Amendments to IFRS 2 (Share-based Payment) The amendments concern: · the fair value measurement of cash-settled share-based payment transactions at the valuation date (i.e., at the grant date, at the reporting date of each accounting period, and at the settlement date), the calculation of which must take into account market conditions (such as the target price of shares) and any other conditions different to the vesting conditions; · the accounting for equity-settled share-based payment transactions in which the entity acts as a withholding agent for the tax liabilities of the employee (withholding tax); · the accounting for changes in terms and conditions that entail the reclassification of “cash-settled” share-based payments as “equity-settled” share-based payments. The adoption of said amendments had no impact on these consolidated financial statements at December 31, 2018. Improvements to IFRS (2014–2016 cycle) The amendments clarify that if an investment entity (such as a mutual investment fund or similar entity) elects to measure its investments in associates and joint ventures at fair value through profit or loss (rather than applying the equity method), the election must be applied to each and every investment upon initial recognition. A similar clarification applies to entities that are not investment entities, but which hold investments in associates or joint ventures that qualify as investment entities. In that case, when applying the equity method, the entities may maintain the fair value measurement through profit or loss made by their investees in associates and joint ventures. The adoption of said improvements had no impact on these consolidated financial statements at December 31, 2018. Amendments to IAS 40—Transfers of Investment Property Amendments to IAS 40 clarifies that an entity may transfer a property to, or from, investment property only when there is evidence of a change in use. The adoption of said amendments had no impact on these consolidated financial statements at December 31, 2018. ADOPTION OF THE NEW IFRS 9 AND IFRS 15 STANDARDS This section provides an overview of the main elements of IFRS 9 ( Financial Instruments Revenue from Contracts with Customers
IFRS 15 (revenues from contracts with customers)	IFRS 15 (Revenues from contracts with customers) IFRS 15 replaces the standards that formerly governed revenue recognition, namely IAS 18 ( Revenue Construction contracts Customer loyalty programmes Agreements for the construction of real estate Transfers of assets from customers Revenue—Barter transactions involving advertising services The TIM Group has applied the retrospective method with the recognition of the cumulative effect of the first-time application of the standard as an adjustment to the opening balance of equity for the period when the standard is adopted, without restating prior periods, according to IFRS 15, paragraph C3 b). The adoption of IFRS 15 affected the recognition of revenues from fixed-line and mobile offers and the recognition of contract costs. The main differences for the TIM Group with respect to the previous accounting standards applied (IFRS 15 vs. IAS 18, IAS 11 and relative Interpretations) concern: · bundle offers · activation/installation revenues · contract costs The comprehensive net impact (including tax effects) of the adoption of IFRS 15 on consolidated equity at January 1, 2018 (transition date) was not material and mainly connected with the combined effects of: · the change in the types of contract costs that are deferred; · the new approach to recognizing activation/installation revenues and the recognition of contract assets connected with the earlier recognition of revenues from bundle offers.
Impacts of the adoption of IFRS 9 and IFRS 15	IMPACTS OF THE ADOPTION OF IFRS 9 AND IFRS 15 Impacts on the consolidated statements of financial position at 1/1/2018 (transition date) The impacts of the transition on the main line items of the consolidated statements of financial position are shown below. As of IFRS 9 IFRS 15 As of (millions of euros) Assets Non-current Intangible assets Intangible assets with a finite useful life 7,192 (110 ) 7,082 Other non-current Non-current 1,768 1,768 Miscellaneous receivables and other non-current 2,422 (269 ) 2,153 Deferred tax assets 993 27 1,020 Current assets Trade and miscellaneous receivables and other current assets 4,959 (147 ) 42 4,854 Current financial assets 5,005 5,005 Total Assets 68,783 (120 ) (337 ) 68,326 Equity and Liabilities Equity Equity attributable to owners of the Parent 21,557 (100 ) 17 21,474 Non-controlling 2,226 (7 ) 2 2,221 Total Equity 23,783 (107 ) 19 23,695 Non-current Miscellaneous payables and other non-current 1,678 (251 ) 1,427 Deferred tax liabilities 265 (11 ) 8 262 Current liabilities Trade and miscellaneous payables and other current liabilities 7,520 (113 ) 7,407 Current income tax payables 112 (2 ) 110 Total Equity and liabilities 68,783 (120 ) (337 ) 68,326 (*) For further details, see the specific notes to the Consolidated Financial Statements at December 31, 2018. Following the adoption of IFRS 9, the different classification of financial assets had no substantial impact for the TIM Group on the measurement of those assets, while the introduction of the expected credit loss model replacing the incurred loss model required by IAS 39, resulted in a reduction of 107 million euros in consolidated equity at the transition date of January 1, 2018. The comprehensive net impact (including tax effects) of the adoption of IFRS 15 on consolidated equity at January 1, 2018 (transition date) was a positive 19 million euros and mainly connected with the combined effects of: · the change in the types of contract costs that are deferred; · the new approach to recognizing activation/installation revenues and the recognition of contract assets connected with the earlier recognition of revenues from bundle offers. Impact of new accounting standards (IFRS 9 and IFRS 15) on the main line items of the separate consolidated income statements and consolidated statements of financial position for the year 2018 To enable the year-on-year The breakdown of the impact of the new accounting standards on key consolidated income statement figures for year 2018 is shown below. Year ended December New accounting 2018 2018 (a) (b) (c=a-b) (millions of euros) Revenues (1 ) 18,940 19,109 (169 ) Operating expenses (2 ) (11,878 ) (11,737 ) (141 ) Depreciation and amortization (3 ) (4,255 ) (4,399 ) 144 Operating profit (loss) (EBIT) 561 727 (166 ) Other income (expenses) from investments (4 ) 11 10 1 Finance income (expenses) (5 ) (1,348 ) (1,341 ) (7 ) Profit (loss) before tax from continuing operations (777 ) (605 ) (172 ) Income tax expense (6 ) (375 ) (433 ) 58 Profit (loss) for the year (1,152 ) (1,038 ) (114 ) Attributable to: Owners of the Parent (1,411 ) (1,298 ) (113 ) Non-controlling 259 260 (1 ) (1) The change in Revenues (2) The change in Operating expenses non-current (3) The change in Depreciation and amortization non-current (4) The change in Other income (expenses) from investments (5) The change in Finance income (expenses) (6) The change in Income tax expense The impact of the new accounting standards (IFRS 9 and IFRS 15) on the basic Earnings per Ordinary and Savings Share for the year 2018 is equal to -0.01 The breakdown of the impact of the new accounting standards on the main consolidated statements of financial position figures at December 31, 2018 is shown below. As of December 31, New accounting impact (*) 2018 2018 (a) (b) (c=a-b) (millions of euros) Assets Non-current Intangible assets 35,658 35,771 (113 ) Tangible assets 16,146 16,146 — Other non-current 5,086 5,368 (282 ) Non-current 56,890 57,285 (395 ) Current assets 8,729 8,794 (65 ) Total Assets 65,619 66,079 (460 ) Equity and Liabilities Equity Equity attributable to owners of the Parent 19,528 19,716 (188 ) Non-controlling 2,219 2,225 (6 ) Total Equity 21,747 21,941 (194 ) Non-current 30,991 31,276 (285 ) Current liabilities 12,881 12,862 19 Total Liabilities 43,872 44,138 (266 ) Total Equity and liabilities 65,619 66,079 (460 ) (*) For more details, see the information provided on impacts at the transition date.
New standards and interpretations issued by IASB but not yet applicable	NEW STANDARDS AND INTERPRETATIONS ISSUED BY IASB BUT NOT YET IN FORCE At the date of preparation of these financial statements, the following new standards and interpretations, which have not yet entered into force, had been issued by the IASB: IASB/IFRIC documents Mandatory application IFRS 16 ( Leases 1/1/2019 Amendments to IFRS 9: Prepayment Features with Negative Compensation 1/1/2019 IFRIC 23 – Uncertainty over income tax treatments 1/1/2019 Amendments to IAS 28: Long-term interests in Investments in associates and joint ventures 1/1/2019 Improvements to the IFRS (2015–2017 cycle) 1/1/2019 Amendments to IAS 19: plan amendment, curtailment or settlement 1/1/2019 Amendments to References to the Conceptual Framework in IFRS Standards 1/1/2020 IFRS 17: Insurance contracts 1/1/2021 Amendments to IFRS 3 Business combinations 1/1/2020 Amendments to IAS 1 and IAS 8: definition of materiality 1/1/2020 The potential impacts on the consolidated financial statements from application of these standards and interpretations are currently being assessed.
IFRS 16 (leases)	IFRS 16 (Leases) IFRS 16 replaces IAS 17 ( Leases Determining whether an Arrangement Contains a Lease Operating Leases—Incentives Evaluating the Substance of Transactions Involving the Legal Form of a Lease According to IFRS 16, lease agreements (that are not service contracts) are accounted by the lessee through the recognition of a financial liability recognition under assets of the “right of use asset” Contracts classified by the lessee as financial leases according to IAS 17, will not be subject to any change with respect to the current accounting presentation, since they will continue to be classified as finance leases in full accordance with the past. Upon first application of IFRS 16, for the contracts already classified as operating leases according to IAS 17, the TIM Group intends to apply the retrospective method recognizing a financial liability for lease agreements and the corresponding “right of use asset”, measured on the basis of the remaining lease payments at the transition date, according to IFRS 16, paragraph C5 b). Those agreements within the TIM Group that fall within the scope of application of IFRS 16 mainly refer to: · land and buildings for office and industrial use, · infrastructure sites for the mobile telephony network, and · network infrastructure (when not services). With reference to the options and exemptions provided for by IFRS 16, the TIM Group will adopt the following choices: · IFRS 16 is not usually applied to intangible assets or to short-term (i.e. less than 12 months) and to contracts with low unit value; · the “right of use asset” and the financial liabilities relating to lease agreements are classified in specific line items in the statements of financial position; · any service contract component included in the lease payments is generally excluded from the IFRS 16 scope; · contracts with similar characteristics are measured using a single discount rate; · lease contracts already classified as finance lease under IAS 17 retain the previously recognized values. The main impacts on the Group’s consolidated financial statements, which are still being assessed and refined, may be summarized as follows: · Statements of financial position non-current a lease liability in the range of 3.4 – 3.9 billion euros is expected to be recognized upon transition · Separate income statements positive impact on Operating Profit Furthermore, the combination of the straight-line depreciation of the “right of use asset” and the application of the effective interest rate method for lease liabilities will result, compared to IAS 17, in higher income statement expenses in the first few years of the contracts and decreasing expenses in the last years of the contracts · Statements of Cash Flows The process of implementing the new accounting standard entails significant updates and modifications on the IT systems, modification and updating of the control and compliance models and of their processes. The impacts are based on the results of the analyses at the date these financial statements are prepared, and might change since implementation is still in progress. The impacts during transition are not indicative of future developments since the choices of allocating capital might change with resulting economic and financial repercussions on recognition in the financial statements.
IFRS 9 [member]
Statement [LineItems]
Financial instruments	IFRS 9 (Financial Instruments) IFRS 9 ( Financial Instruments As permitted by IFRS 9, the TIM Group: · did not restate the comparative periods in the year of first adoption, considering also the complexity in restatement at the beginning of the first comparative period without the use of hindsight; therefore, the effects deriving from the first adoption of IFRS 9 were recognized in shareholders’ equity at January 1, 2018; · has chosen to continue to apply the hedge accounting requirements of IAS 39, instead of the requirements of IFRS 9. Commencing as of January 1, 2018, TIM has amended the impairment model applied to financial assets (including trade receivables due from customers), by adopting an expected credit loss model as per IFRS 9, which replaces the incurred loss model required by IAS 39. In application of IFRS 9, the classification (and hence measurement) of financial assets has also been modified and is now based on the entity’s business model for managing the financial assets and on the contractual cash flow characteristics of the financial asset. Under IAS 39, financial assets were classified (and hence measured) according to the relative categories prescribed by standard. For further details, please see the Note-Supplementary disclosure on financial instruments. TIM Management has identified its business models for Group financial assets (other than trade receivables due from customers) on the basis of how the financial instruments are managed and their cash flows used. The purpose of the models is to ensure an adequate level of financial flexibility and to best manage, in terms of risks and returns, the financial resources immediately available to the Group through the treasuries of Group companies and in accordance with the strategies set forth by the Parent TIM. As required by IFRS 9, the business models adopted by the TIM Group are: · Hold to Collect · Hold to Collect and Sell · Hold to Sell . Financial assets other than trade receivables are written down for impairment on the basis of a general model which estimates expected credit losses over the following 12 months, or over the residual life of the asset in the event of a substantial increase in its credit risk. The expected credit loss (“ ECL PD LGD To determine the PD and LGD, reference is made to the Bloomberg credit risk model. For the management of trade receivables, TIM Management has identified different business models based on the specific nature of the receivables, the type of counterparty and collection times, in order to optimize the management of working capital through the constant monitoring of the payment performance of customers, the steering of credit collection policies, and the management of programs for the disposal and factoring of receivables, in line with financial planning needs. The business models adopted by the TIM Group for managing trade receivables are: · Hold to Collect · Hold to Collect and Sell Impairment of trade receivables and contract assets is carried out through the simplified approach allowed by the standard. This approach involves estimating the expected loss over the life of the receivable at the time of initial recognition and on subsequent measurements. For each customer segment, the estimate is principally made by calculating the average expected uncollectibility, based on historical and statistical indicators, possibly adjusted using forward-looking elements. For some categories of receivables characterized by specific risk elements, specific measurements are made on individual credit positions. In general, the methodology to recognize the expected loss differs based on the offering content, the customer cluster and payment terms. More specifically, in the case of receivables arising from traditional services offered to consumers and businesses, the expected loss is estimated based on the trend of outstanding receivables with respect to turnover, using the values recorded for turnover generations that have completed the operating cycle as a reference, as well as parameters for measuring the most recent performance, suitable for identifying deviations from the historical trend. As regards receivables arising from offers where products or contribution fees are paid in installments, the assessment of credit default risk for ongoing payment-by-installment For clusters with relational-based credit management (such as major TOP customers, the public administration sector, wholesale customers, sales network dealers), information that can identify specific individual counterparty risk is used in the assessment. At the transition date (January 1, 2018), TIM has chosen to continue to report gains and losses from “other investments (other than those in subsidiaries, associates and joint ventures)”, classified under IAS 39 as “available-for-sale The changes in the classification of financial assets had no material impact on the measurement of such assets for the TIM Group. The comprehensive net impact (including tax effects) of the adoption of IFRS 9 on consolidated equity at the transition date of January 1, 2018 was mainly due to the recognition of higher write-downs for expected losses on trade receivables, connected with the introduction of an expected credit loss model, replacing the incurred loss model required by IAS 39.

Accounting Policies (Tables)

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Effect of Adoption of IFRS 9 and IFRS 15 on Consolidated Statements of Financial Position	The impacts of the transition on the main line items of the consolidated statements of financial position are shown below. As of IFRS 9 IFRS 15 As of (millions of euros) Assets Non-current Intangible assets Intangible assets with a finite useful life 7,192 (110 ) 7,082 Other non-current Non-current 1,768 1,768 Miscellaneous receivables and other non-current 2,422 (269 ) 2,153 Deferred tax assets 993 27 1,020 Current assets Trade and miscellaneous receivables and other current assets 4,959 (147 ) 42 4,854 Current financial assets 5,005 5,005 Total Assets 68,783 (120 ) (337 ) 68,326 Equity and Liabilities Equity Equity attributable to owners of the Parent 21,557 (100 ) 17 21,474 Non-controlling 2,226 (7 ) 2 2,221 Total Equity 23,783 (107 ) 19 23,695 Non-current Miscellaneous payables and other non-current 1,678 (251 ) 1,427 Deferred tax liabilities 265 (11 ) 8 262 Current liabilities Trade and miscellaneous payables and other current liabilities 7,520 (113 ) 7,407 Current income tax payables 112 (2 ) 110 Total Equity and liabilities 68,783 (120 ) (337 ) 68,326 (*) For further details, see the specific notes to the Consolidated Financial Statements at December 31, 2018.
Schedule of Breakdown of Impact of New Accounting Standards on Consolidated Financial Statements	The breakdown of the impact of the new accounting standards on key consolidated income statement figures for year 2018 is shown below. Year ended December New accounting 2018 2018 (a) (b) (c=a-b) (millions of euros) Revenues (1 ) 18,940 19,109 (169 ) Operating expenses (2 ) (11,878 ) (11,737 ) (141 ) Depreciation and amortization (3 ) (4,255 ) (4,399 ) 144 Operating profit (loss) (EBIT) 561 727 (166 ) Other income (expenses) from investments (4 ) 11 10 1 Finance income (expenses) (5 ) (1,348 ) (1,341 ) (7 ) Profit (loss) before tax from continuing operations (777 ) (605 ) (172 ) Income tax expense (6 ) (375 ) (433 ) 58 Profit (loss) for the year (1,152 ) (1,038 ) (114 ) Attributable to: Owners of the Parent (1,411 ) (1,298 ) (113 ) Non-controlling 259 260 (1 ) (1) The change in Revenues (2) The change in Operating expenses non-current (3) The change in Depreciation and amortization non-current (4) The change in Other income (expenses) from investments (5) The change in Finance income (expenses) (6) The change in Income tax expense The impact of the new accounting standards (IFRS 9 and IFRS 15) on the basic Earnings per Ordinary and Savings Share for the year 2018 is equal to -0.01 The breakdown of the impact of the new accounting standards on the main consolidated statements of financial position figures at December 31, 2018 is shown below. As of December 31, New accounting impact (*) 2018 2018 (a) (b) (c=a-b) (millions of euros) Assets Non-current Intangible assets 35,658 35,771 (113 ) Tangible assets 16,146 16,146 — Other non-current 5,086 5,368 (282 ) Non-current 56,890 57,285 (395 ) Current assets 8,729 8,794 (65 ) Total Assets 65,619 66,079 (460 ) Equity and Liabilities Equity Equity attributable to owners of the Parent 19,528 19,716 (188 ) Non-controlling 2,219 2,225 (6 ) Total Equity 21,747 21,941 (194 ) Non-current 30,991 31,276 (285 ) Current liabilities 12,881 12,862 19 Total Liabilities 43,872 44,138 (266 ) Total Equity and liabilities 65,619 66,079 (460 ) (*) For more details, see the information provided on impacts at the transition date.

Scope of Consolidation (Tables)

Scope of Consolidation (Tables)	12 Months Ended
	Dec. 31, 2018
Statement [LineItems]
Summary of Subsidiaries Exiting/ Merged into the Scope of Consolidation	Subsidiaries exiting/merged into the scope of consolidation: Company Business Unit Month Exit: OLIVETTI ESPAÑA S.A. (in liquidation) Liquidated Other Operations December 2018 Merger: TI SPARKLE MED S.p.A. Merged into TI Sparkle S.p.A. Domestic April 2018 TIM CELULAR S.A. Merged into TIM S.A. Brazil October 2018
Summary of Breakdown by Number of Subsidiaries and Associates	The breakdown by number of subsidiaries and associates of the TIM Group is as follows: As of December 31, 2018 Companies Italy Outside Italy Total subsidiaries consolidated line-by-line 21 42 63 joint ventures accounted for using the equity method 1 — 1 associates accounted for using the equity method 16 — 16 Total companies 38 42 80 As of December 31, 2017 Companies Italy Outside Italy Total subsidiaries consolidated line-by-line 22 44 66 joint ventures accounted for using the equity method 1 — 1 associates accounted for using the equity method 19 — 19 Total companies 42 44 86
Consolidated statement of financial position [member] | Tim Brazil Group [member]
Statement [LineItems]
Summary of Statement of Financial Statement - TIM Brasil Group-Brazil Business Unit	Statement of Financial Position Data—TIM Brasil group Year ended December 31, 2018 2017 (millions of euros) Non-current 6,257 6,819 Current assets 1,387 1,929 Total Assets 7,644 8,748 Non-current 959 1,703 Current liabilities 1,678 1,852 Total Liabilities 2,637 3,555 Equity 5,007 5,193 of which, Non-controlling 1,518 1,556
Income Statement [member] | Tim Brazil Group [member]
Statement [LineItems]
Summary of Statement of Financial Statement - TIM Brasil Group-Brazil Business Unit	Income Statement Data—TIM Brasil group Year ended December 31, 2018 2017 2016 (millions of euros) Revenues 3,943 4,502 4,047 Profit (loss) for the year 586 340 194 of which, Non-controlling 200 114 65

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Breakdown and Changes in Goodwill	Goodwill shows the following breakdown and changes during 2017 and 2018: As of Reclassification Increase Decrease Impairments Exchange As of (millions of euros) Domestic 28,489 28,489 Core Domestic 28,077 28,077 International Wholesale 412 412 Brazil 1,123 (150 ) 973 Other operations — — Total 29,612 — — — — (150 ) 29,462 As of Reclassification Increase Decrease Impairments Exchange As of (millions of euros) Domestic 28,489 (2,590 ) 25,899 Core Domestic 28,077 (2,450 ) 25,627 International Wholesale 412 (140 ) 272 Brazil 973 (103 ) 870 Other operations — — Total 29,462 — — — (2,590 ) (103 ) 26,769
Summary of Gross Carrying Amounts, Accumulated Impairment Losses (Details)	The gross carrying amounts of goodwill and the relative accumulated impairment losses from January 1, 2004 (date of allocation to the Cash Generating Units—CGUs) to December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2018 As of December 31, 2017 Gross Accumulated Net Gross Accumulated Net (millions of euros) Domestic 42,457 (16,558 ) 25,899 42,457 (13,968 ) 28,489 Core Domestic 42,045 (16,418 ) 25,627 42,045 (13,968 ) 28,077 International Wholesale 412 (140 ) 272 412 — 412 Brazil 1,077 (207 ) 870 1,204 (231 ) 973 Other operations — — — — — — Total 43,534 (16,765 ) 26,769 43,661 (14,199 ) 29,462
Summary of Principal Parameters for Estimates of Value in Use (Details)	Principal parameters for the estimates of value in use Core % WACC 6.60 WACC before tax 8.91 Growth rate beyond the explicit period (g) 0.50 Capitalization rate net of tax (WACC -g 6.10 Capitalization rate before taxes (WACC -g 8.41 Capex/Revenues, % perpetual 20.15
Summary of Differences Between Recoverable Amounts and Net Carrying Amounts (Details)	The difference between the recoverable amounts and the net carrying amounts of the CGUs considered totaled: Core International Brazil (millions of euros) Difference between recoverable amounts and net carrying amounts (2,450 ) (140 ) 1,246

Intangible Assets with a Fini_2

Intangible Assets with a Finite Useful Life (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Breakdown and Movements in Intangible Assets	The breakdown and movements are as follows: As of Addition Amortization Impairment Disposals Exchange Capitalized Other As of (millions of euros) Industrial patents and intellectual property rights 2,458 771 (1,263 ) (147 ) 374 2,193 Concessions, licenses, trademarks and similar rights 2,854 140 (396 ) (96 ) 248 2,750 Other intangible assets 109 157 (134 ) (5 ) 7 134 Work in progress and advance payments 1,530 1,224 (30 ) (143 ) 73 (539 ) 2,115 Total 6,951 2,292 (1,793 ) (30 ) — (391 ) 73 90 7,192 As of IFRS 15 Addition Amortization Impairment Disposals Exchange Capitalized Other As of (millions of euros) Industrial patents and intellectual property rights 2,193 703 (1,171 ) (98 ) 468 2,095 Concessions, licenses, trademarks and similar rights 2,750 103 (422 ) (64 ) 894 3,261 Other intangible assets 134 (110 ) 11 (6 ) (1 ) 5 33 Work in progress and advance payments 2,115 2,830 4 (1 ) (88 ) 37 (1,397 ) 3,500 Total 7,192 (110 ) 3,647 (1,599 ) 4 (1 ) (251 ) 37 (30 ) 8,889
Summary of Rresidual Amount of Telephone Licenses and Similar Rights and Their Useful Lives	The residual amount of telephone licenses and similar rights (2,655 million euros) and their useful lives are detailed below: Type of license Residual amount at Useful life Maturity date Amortization TIM S.p.A.: UMTS 403 18 12/31/2021 134 UMTS 2100 MHz 22 12 12/31/2021 7 WiMax 4 15 05/31/2023 1 LTE 1800 MHz 94 18 12/31/2029 9 LTE 800 MHz 661 17 12/31/2029 60 LTE 2600 MHz 73 17 12/31/2029 7 1452-1492 MHz band 181 14 12/31/2029 16 GSM (extension) — 3 06/30/2018 17 900 and 1800 MHz band 602 12 12/31/2029 27 Tim Brasil group: GSM and 3G (UMTS) 129 15 From 2023 to 2031 41 4G (LTE—700 MHz) 486 15 2030 36
Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Amortization	The gross carrying amount, accumulated impairment losses and accumulated amortization at December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2017 Gross Accumulated Accumulated Net carrying (millions of euros) Industrial patents and intellectual property rights 12,266 (7 ) (10,066 ) 2,193 Concessions, licenses, trademarks and similar rights 7,044 (273 ) (4,021 ) 2,750 Other intangible assets 522 (388 ) 134 Work in progress and advance payments 2,145 (30 ) 2,115 Total intangible assets with a finite useful life 21,977 (310 ) (14,475 ) 7,192 As of December 31, 2018 Gross Accumulated Accumulated Net carrying (millions of euros) Industrial patents and intellectual property rights 10,832 (8,737 ) 2,095 Concessions, licenses, trademarks and similar rights 7,839 (277 ) (4,301 ) 3,261 Other intangible assets 241 (208 ) 33 Work in progress and advance payments 3,526 (26 ) 3,500 Total intangible assets with a finite useful life 22,438 (303 ) (13,246 ) 8,889

Tangible Assets (Owned and Un_2

Tangible Assets (Owned and Under Finance Leases) (Tables)	12 Months Ended
	Dec. 31, 2018
Statement [LineItems]
Summary Changes in Property, Plant and Equipment	The breakdown and movements are as follows: As of Addition Depreciation Impairment Disposals Exchange Other As of (millions of euros) Land 203 6 (2 ) 6 213 Buildings (civil and industrial) 509 10 (39 ) (3 ) 11 488 Plant and equipment 11,709 2,601 (2,286 ) (8 ) (8 ) (332 ) 373 12,049 Manufacturing and distribution equipment 38 12 (16 ) 2 36 Other 391 88 (159 ) (2 ) (18 ) 76 376 Construction in progress and advance payments 1,097 541 1 (1 ) (41 ) (543 ) 1,054 Total 13,947 3,258 (2,500 ) (7 ) (11 ) (396 ) (75 ) 14,216 As of Addition Depreciation Impairment Disposals Exchange Other As of (millions of euros) Land 213 6 (1 ) 32 250 Buildings (civil and industrial) 488 79 (36 ) (2 ) 59 588 Plant and equipment 12,049 2,013 (2,229 ) (7 ) (217 ) 487 12,096 Manufacturing and distribution equipment 36 8 (14 ) 1 31 Other 376 94 (162 ) (2 ) (13 ) 65 358 Construction in progress and advance payments 1,054 488 (4 ) (21 ) (589 ) 928 Total 14,216 2,688 (2,441 ) — (13 ) (254 ) 55 14,251
Summary of Depreciation on Straight-line Basis Over the Estimated Useful Life of Assets	Depreciation for the years 2018 and 2017 was calculated on a straight-line basis over the estimated useful lives of the assets according to the following minimum and maximum rates: Buildings (civil and industrial) 2%-5.55% Plant and equipment 3%-50% Manufacturing and distribution equipment 20% Other 10%-50%
Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Depreciation	The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2017 Gross Accumulated Accumulated Net (millions of euros) Land 218 (5 ) 213 Buildings (civil and industrial) 1,717 — (1,229 ) 488 Plant and equipment 68,964 (62 ) (56,853 ) 12,049 Manufacturing and distribution equipment 310 (1 ) (273 ) 36 Other 3,988 (2 ) (3,610 ) 376 Construction in progress and advance payments 1,054 — 1,054 Total 76,251 (70 ) (61,965 ) 14,216 As of December 31, 2018 Gross Accumulated Accumulated Net (millions of euros) Land 253 (3 ) 250 Buildings (civil and industrial) 1,862 — (1,274 ) 588 Plant and equipment 70,525 (62 ) (58,367 ) 12,096 Manufacturing and distribution equipment 318 (1 ) (286 ) 31 Other 3,885 (2 ) (3,525 ) 358 Construction in progress and advance payments 928 — — 928 Total 77,771 (68 ) (63,452 ) 14,251
Assets held under finance lease [member]
Statement [LineItems]
Summary Changes in Property, Plant and Equipment	Assets held under finance lease decreased by 436 million euros compared to December 31, 2017. The breakdown and movements are as follows: As of Addition Increases Depreciation Exchange Other As of (millions of euros) Land 16 16 Buildings (civil and industrial) 1,835 47 2 (130 ) 14 1,768 Plant and equipment 365 72 14 (21 ) (43 ) (34 ) 353 Other 125 52 (29 ) (1 ) (9 ) 138 Construction in progress and advance payments 72 32 (48 ) 56 Total 2,413 151 68 (180 ) (44 ) (77 ) 2,331 As of Addition Increases Depreciation Exchange Other As of (millions of euros) Land 16 16 Buildings (civil and industrial) 1,768 32 12 (159 ) — (288 ) 1,365 Plant and equipment 353 9 6 (18 ) (26 ) (22 ) 302 Other 138 52 (38 ) (1 ) (3 ) 148 Construction in progress and advance payments 56 32 (24 ) 64 Total 2,331 73 70 (215 ) (27 ) (337 ) 1,895
Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Depreciation	The gross carrying amount, accumulated impairment losses and accumulated depreciation at December 31, 2018 and 2017 can be summarized as follows: As of December 31, 2017 Gross Accumulated Accumulated Net (millions of euros) Land 16 16 Buildings (civil and industrial) 3,391 (27 ) (1,596 ) 1,768 Plant and equipment 397 (44 ) 353 Other 200 (62 ) 138 Construction in progress and advance payments 56 56 Total 4,060 (27 ) (1,702 ) 2,331 As of December 31, 2018 Gross Accumulated Accumulated Net (millions of euros) Land 16 16 Buildings (civil and industrial) 2,792 (13 ) (1,414 ) 1,365 Plant and equipment 370 (68 ) 302 Other 243 (95 ) 148 Construction in progress and advance payments 64 64 Total 3,485 (13 ) (1,577 ) 1,895
Summsry of Finance Lease Payments Due in Future Years and Present Value	At December 31, 2018 and 2017, finance lease payments due in future years and their present value are as follows: As of December 31, 2018 2017 Minimum Present value of Minimum lease Present value of (millions of euros) Within 1 year 227 210 271 234 From 2 to 5 years 993 782 1,031 691 Beyond 5 years 1,745 831 2,878 1,391 Total 2,965 1,823 4,180 2,316 As of December 31, 2018 2017 (millions of euros) Future net minimum lease payments 2,965 4,180 Interest portion (1,142 ) (1,864 ) Present value of lease payments 1,823 2,316 Financial lease liabilities 1,948 2,430 Financial receivables for lease contracts (124 ) (114 ) Total net finance lease liabilities 1,823 2,316

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Investments in Associates and Joint Ventures Accounted for Using Equity method	Investments in associates and joint ventures accounted for using the equity method As of December 31, 2018 2017 (millions of euros) Tiglio I 5 7 NordCom 5 5 W.A.Y. 3 3 Others 3 2 Total Associates 16 17 Alfiere — — Total Joint Ventures — — Total Investments accounted for using the equity method 16 17
Summary of Changes in Investments in Associates and Joint Ventures	The changes in this item are broken down as follows: As of Investments Disposals and Valuation As of (millions of euros) Tiglio I S.r.l 8 (1 ) 7 NordCom 5 5 W.A.Y. 3 3 Others 2 2 Total Associates 18 — — (1 ) 17 Alfiere — — Total Joint Ventures — — — — — Total Investments accounted for using the equity method 18 — — (1 ) 17 As of Investments Disposals and Valuation As of (millions of euros) Tiglio I S.r.l 7 (2 ) 5 NordCom 5 5 W.A.Y. 3 3 Others 2 1 3 Total Associates 17 — — (1 ) 16 Alfiere — — — — — Total Joint Ventures — — — — — Total Investments accounted for using the equity method 17 — — (1 ) 16
Summary of Financial Statement in Joint Venture	The financial statements as of December 31, 2018 of Alfiere S.p.A. are currently not available. The main aggregated figures prepared with regard to the portion attributable to the TIM Group show amounts referring to the financial statements for 2017. 2017 Alfiere S.p.A. Telecom Italia (millions of euros) Non-current 156.6 78.3 Current assets 3.5 1.8 Total assets 160.1 80.1 Non-current 142.9 71.5 Current liabilities 13.6 6.8 Total liabilities 156.5 78.3 Equity 3.6 1.8 Total Equity and liabilities 160.1 80.1 Profit (loss) for the year (5.7 ) (2.9 )
Summary of Other Investments	Other investments refer to the following: As of Investments Disposals and Measurement Other As of (millions of euros) Assicurazioni Generali 2 1 3 Fin.Priv. 17 3 20 Northgate Comms Tech Innovations Partners L.P. (ex Northgate Telecom Innovations Partners L.P.) 14 3 17 Others 13 (2 ) 11 Total 46 3 — 4 (2 ) 51 As of IFRS 9 Investments Disposals and Measurement Other As of (millions of euros) Assicurazioni Generali 3 3 Fin.Priv. 20 (4 ) 16 Northgate Comms Tech Innovations Partners L.P. (ex Northgate Telecom Innovations Partners L.P.) 17 (3 ) 2 16 Others 11 3 1 (1 ) 14 Total 51 — 3 (1 ) (4 ) — 49

Financial Assets (Non-Current_2

Financial Assets (Non-Current and Current) (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Financial Assets (Non-Current and Current)	Financial assets (non-current As of 2018 2017 (millions of Non-current Securities, financial receivables and other non-current Securities other than investments — — Receivables from employees 43 47 Financial receivables for lease contracts 54 69 Hedging derivatives relating to hedged items classified as non-current 1,490 1,495 Non-hedging 7 7 Other financial receivables — 150 Total non-current (A) 1,594 1,768 Current financial assets Securities other than investments Held for trading — — Held to maturity — — Available for sale — 993 Measured at amortized cost (AC) — — Measured at fair value through other comprehensive income (FVTOCI) 945 — Measured at fair value through profit or loss (FVPTL) 181 — 1,126 993 Financial receivables and other current financial assets: Liquid assets with banks, financial institutions and post offices (with a maturity greater than 3 months) — 100 Receivables from employees 14 16 Financial receivables for lease contracts 70 45 Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature 242 260 Non-hedging 12 15 Other short-term financial receivables 2 1 340 437 Cash and cash equivalents 1,917 3,575 Total current financial assets (B) 3,383 5,005 Financial assets relating to Discontinued operations/Non-current (C) — — Total non-current (A+B+C) 4,977 6,773
Schedule of Decrease In Cash and Cash Equivalents	Cash and cash equivalents fell by 1,658 million euros compared to December 31, 2017. The figure breaks down as follows: As of December 31, 2018 2017 (millions of euros) Liquid assets with banks, financial institutions and post offices 1,694 2,828 Checks, cash and other receivables and deposits for cash flexibility 1 2 Securities other than investments (due within 3 months) 222 745 Total 1,917 3,575

Miscellaneous Receivables and_2

Miscellaneous Receivables and Other Non-Current Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Statement [LineItems]
Schedule of Increase/Decrease in Miscellaneous Receivable and Other Non-Current Assets	Miscellaneous receivables and other non-current As of December 31, 2018 2017 Of which Of which (millions of euros) Miscellaneous receivables ( non-current) (a) 697 326 704 371 Other non-current Deferred contract costs 1,531 Other cost deferrals 63 Medium/long-term prepaid expenses 1,718 Total other non-current (b) 1,594 1,718 Total (a+b ) 2,291 326 2,422 371
Schedule of Break Down of Total Deferred Contract Costs	As of December 31, 2018 (millions of euros) Deferred contract cost Costs of obtaining a contract 1,132 Costs to fulfil a contract 1,033 Total
Schedule of Movements in Total Deferred Contract Costs	As of Increase Release to Exchange other changes As of (millions of euros) Costs of obtaining a contract 1,031 473 (367 ) (5 ) 1,132 Costs to fulfil a contract 905 348 (220 ) — 1,033 Total 1,936 821 (587 ) (5 ) 2,165
Miscellaneous receivables and other non current assets [member]
Statement [LineItems]
Schedule on Impacts by Adoption of IFRS 15	The impacts caused by the adoption of IFRS 15 are summarized below: As of 2018 Adoption of new accounting As of 2018 IFRS 15 IFRS 15 (millions of euros) Miscellaneous receivables (non-current) (a) 704 704 Other non-current Deferred contract costs — 1,714 (319 ) 1,395 Other cost deferrals — 54 — 54 Medium/long-term prepaid expenses 1,718 (1,718 ) — — Total other non-current (b) 1,718 50 (319 ) 1,449 Total (a+b ) 2,422 50 (319 ) 2,153

Income Taxes (Current and Def_2

Income Taxes (Current and Deferred) (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Deferred Tax Assets and Deferred Tax Liabilities	The net balance of 944 million euros at December 31, 2018 (728 million euros at December 31, 2017) breaks down as follows. As of December 31, 2018 2017 (millions of euros) Deferred tax assets 1,136 993 Deferred tax liabilities (192 ) (265 ) Total 944 728
Schedule of Deferred Tax Assets and Deferred Tax Liabilities Before Offsets By Legal Entity	Since the presentation of deferred tax assets and liabilities in the financial statements takes into account the offsets by legal entity when applicable, the composition of the gross amounts before offsets is presented below: As of December 31, 2018 2017 (millions of euros) Deferred tax assets 1,592 1,429 Deferred tax liabilities (648 ) (701 ) Total 944 728
Schedule of Temporary Differences in Deferred Tax Assets and Deferred Tax Liabilities	The temporary differences which made up this line item at December 31, 2018 and 2017, as well as the movements during 2018 were as follows: As of IFRS 9 IFRS 15 Recognized in Recognized in Change in As of (millions of euros) Deferred tax assets: Tax loss carryforwards 32 181 (8 ) 205 Derivatives 589 (7 ) (9 ) 573 Provision for bad debts 142 27 11 6 186 Provisions 452 (12 ) (8 ) 432 Taxed depreciation and amortization 106 8 114 Other deferred tax assets 108 (23 ) (5 ) 2 82 Total 1,429 27 — 158 (14 ) (8 ) 1,592 Deferred tax liabilities: Derivatives (422 ) (1 ) 2 (421 ) Business combinations—for step-up (131 ) 4 13 (114 ) Deferred gains (2 ) 2 — Accelerated depreciation (14 ) (14 ) Other deferred tax liabilities (132 ) 11 (8 ) 35 (5 ) (99 ) Total (701 ) 11 (8 ) 38 4 8 (648 ) Total net deferred tax assets (liabilities) 728 38 (8 ) 196 (10 ) — 944
Schedule of Expirations of Deferred Tax Assets and Deferred Tax Liabilities	The expirations of deferred tax assets and deferred tax liabilities at December 31, 2018 were as follows: Within 1 year Beyond 1 year Total at December 31, (millions of euros) Deferred tax assets 383 1,209 1,592 Deferred tax liabilities (18 ) (630 ) (648 ) Total net deferred tax assets (liabilities) 365 579 944
Schedule of Unused Tax Loss Carryforwards	At December 31, 2018, the TIM Group had unused tax loss carryforwards of 2,163 million euros, mainly relating to the Brazil Business Unit and the company Telecom Italia Finance, with the following expiration dates: Year of expiration (millions of euros) 2019 — 2020 — 2021 — 2022 1 2023 — Expiration after 2023 39 Without expiration 2,123 Total unused tax loss carryforwards 2,163
Schedule of Income Tax Payables	Income tax payables amounted to 109 million euros (157 million euros at December 31, 2017). They break down as follows: At 2018 2017 (millions of Income tax payables: Non-current 42 45 Current 67 112 Total 109 157
Schedule of Income Tax Expense	Income tax expense breaks down as follows: 2018 2017 2016 (millions of euros) Current taxes for the year 547 646 900 Net difference in prior years estimates 24 (6 ) (54 ) Total current taxes 571 640 846 Deferred taxes (196 ) (150 ) 34 Total taxes on continuing operations (A) 375 490 880 Total taxes on Discontinued operations/Non-current (B) — — 48 Total income tax expense for the year (A+B) 375 490 928
Schedule of Reconciliation Between the Theoretical Tax Expense	The reconciliation between the theoretical tax expense, using the IRES tax rate in force in Italy (24%), and the effective tax expense for the years ended December 31, 2018, 2017 and 2016 is the follows: 2018 2017 2016 (millions of euros) Profit (loss) before tax from continuing operations (777 ) 1,777 2,799 Theoretical income tax from continuing operations (186 ) 426 770 Income tax effect on increases (decreases) in variations: Tax losses of the year not considered recoverable 9 3 17 Tax losses from prior years not recoverable (recoverable) in future years (225 ) (2 ) (1 ) Non-deductible 621 — — Effect of change in IRES tax rate — — 25 Prior years’ IRES 25 (26 ) (38 ) Brazil: different rate compared to theoretical rate in force in Italy 44 34 11 Brazil: incentive on investments in the north-east of the country (34 ) (31 ) (31 ) Other net differences (19 ) (55 ) (26 ) Effective income tax recognized in income statement from continuing operations, excluding IRAP tax 235 349 727 IRAP tax 140 141 153 Total effective income tax recognized in income statement from continuing operations (A ) 375 490 880 Effective income tax recognized in income statement from Discontinued operations/Non-current (B ) — — 48 Total effective income tax recognized in income statements (A+B ) 375 490 928

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Inventories	Inventories increased by 99 million euros compared to December 31, 2017 and consisted of the following: As of December 31, 2018 2017 (millions of euros) Raw materials and supplies 1 1 Work in progress and semi-finished products 1 3 Finished goods 387 286 Total 389 290

Trade and Miscellaneous Recei_2

Trade and Miscellaneous Receivables and Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Increase in Trade and Miscellaneous Receivables and Other Current Assets	Trade and miscellaneous receivables and other current assets fell by 253 million euros compared to December 31, 2017. The figure breaks down as follows. As of December 31, 2018 2017 Of which Of which (millions of euros) Amounts due on construction contracts (a ) 55 34 Trade receivables Receivables from customers 2,290 2,290 2,528 2,528 Receivables from other telecommunications operators 1,037 1,037 972 972 (b ) 3,327 3,327 3,500 3,500 Miscellaneous receivables (current) Other receivables (c ) 424 125 645 154 Other current assets Activities deriving from contracts (Contract Assets) 46 46 Deferred contract costs 634 Other cost deferrals 220 Trade and miscellaneous prepaid expenses 780 (d ) 900 46 780 — Total 4,706 3,498 4,959 3,654
Schedule on Impacts By Adoption of IFRS 9 and IFRS 15	The impacts caused by the adoption of IFRS 9 and IFRS 15 are summarized below: As of Adoption of new standards As of IFRS 15 reclassifications IFRS 9 adjustments IFRS 15 adjustments (millions of euros) Amounts due on construction contracts (a) 34 — — — 34 Trade receivables Receivables from customers 2,528 — (141 ) — 2,387 Receivables from other telecommunications operators 972 — (6 ) — 966 (b) 3,500 — (147 ) — 3,353 Miscellaneous receivables (current) Other receivables (c) 645 — — — 645 Other current assets Activities deriving from contracts (Contract Assets) — — — 35 35 Deferred contract costs — 594 — (53 ) 541 Other cost deferrals — 246 — — 246 Trade and miscellaneous prepaid expenses 780 (780 ) — — — (d) 780 60 — (18 ) 822 Total (a+b+c+d) 4,959 60 (147 ) (18 ) 4,854
Summary of Analyses of the Aging of Trade and Miscellaneous Receivables	The analyses of the aging of trade and miscellaneous receivables at December 31, 2018 and 2017 are provided below: Overdue: As of Total Total 0-90 91-180 181-365 More than (millions of euros) Trade and miscellaneous receivables and other current assets 3,498 2,715 783 175 134 158 316 Overdue: As of Total Total 0-90 91-180 181-365 More than (millions of euros) Trade and miscellaneous receivables and other current assets 3,654 2,781 873 300 178 188 207
Summary of Provision for Bad Debts	Movements in the provision for bad debts were as follows: 2018 2017 (millions of euros) At January 1 597 648 Effects of IFRS 9 adoption 147 Provision charges to the income statement 320 242 Utilization and decreases (281 ) (278 ) Exchange differences and other changes (14 ) (15 ) At December 31 769 597
Summary of Other Receivables	Details are as follows: As of December 31, 2018 2017 (millions of euros) Advances to suppliers 24 69 Receivables from employees 11 12 Tax receivables 87 135 Receivables for grants from the government and public entities 91 207 Sundry receivables 211 222 Total 424 645

Discontinued Operations_Non-c_2

Discontinued Operations/Non-current Assets Held for Sale (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Income Statement Impacts from The Sofora-telecom Argentina Group and its Sale	Below is a summary of the income statement impacts from the Sofora—Telecom Argentina group and its sale. The figures for 2016 have been translated at the average exchange rate for the period January 1 – March 8 (15.7981 pesos per euro), whereas the figures for 2015 have been translated at the annual average exchange rate (10.2689 pesos per euro). Year ended December 31, 2018 2017 1.1-3.8 2016 (millions of euros) Income statement effects from Discontinued operations/Non-current Revenues — — 504 Other income — — 1 Operating expenses — — (372 ) Gains (losses) on disposals of non-current — — — Goodwill and other non-current — — — Operating profit (loss) — — 133 Finance income (expenses) — — (42 ) Profit (loss) before tax from Discontinued operations/Non-current — — 91 Income tax expense — — (32 ) Profit (loss) after tax from Discontinued operations/Non-current (A) — — 59 Other minor income statement effects: Other income/(expenses) connected to sales in previous years — — Other minor entries — — (B) — — — Profit (loss) from Discontinued operations/Non-current (C=A+B) — — 59 Income statement effects on the selling entities: Net gains on disposal — — 307 Transfer to the separate consolidated dated income statement of the Reserve for exchange differences on translating foreign operations — — (304 ) Income tax expense relating to the disposal — — (15 ) (D) — — (12 ) Profit (loss) from Discontinued operations/Non-current (C+D) — — 47 Attributable to: — — Owners of the Parent — — (3 ) Non-controlling — — 50
Summary of Earnings Per Share from Discontinued Operations/non-current Assets Held for Sale	The earnings per share from Discontinued operations/Non-current Year ended December 31, 2018 2017 1.1-3.8 2016 (Euros) Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-current Ordinary Share — — — Savings Share — — — (*) Basic EPS is equal to Diluted EPS.
Summary of Consolidated Statements of Cash Flows and its Net Impacts, Expressed in "Discontinued Operations/non-current Assets Held for Sale	Within the consolidated statements of cash flows the net impacts, expressed in terms of contribution to the consolidation, of the “Discontinued operations/Non-current Year ended December 31, 2018 2017 1.1-3.8 2016 (millions of euros) Discontinued operations/Non-current Cash flows from (used in) operating activities — — 130 Cash flows from (used in) investing activities — — (117 ) Cash flows from (used in) financing activities — — (58 ) Total — — (45 )

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Components of Equity	Equity consisted of: As of December 31, 2018 2017 (millions of euros) Equity attributable to owners of the Parent 19,528 21,557 Non-controlling 2,219 2,226 Total 21,747 23,783
Summary of Reserves and Other Equity Interest	The composition of the “ Equity attributable to owners of the Parent” As of December 31, 2018 2017 (millions of euros) Share capital 11,587 11,587 Additional paid-in 2,094 2,094 Other reserves and retained earnings (accumulated losses), including profit (loss) for the year(*) 5,847 7,876 Total 19,528 21,557 (*) of which: Reserve for financial assets measured at fair value through other comprehensive income (*) 30 42 Reserve for hedging instruments (563 ) (582 ) Reserve for exchange differences on translating foreign operations (1,340 ) (955 ) Reserve for remeasurements of employee defined benefit plans (IAS 19) (90 ) (104 ) Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method — — Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year 7,810 9,475 (*) At December 31, 2017 the item included the “Reserve for available-for-sale
Summary of Reconciliation Between the Number of Outstanding Shares	Reconciliation between the number of outstanding shares at December 31, 2015 and December 31, 2016 Shares as of Shares issued for the Shares as of Percentage of (number of shares) Ordinary Shares issued (a) 13,499,911,771 1,703,210,812 15,203,122,583 71.61 % Less: Treasury Shares (b) (163,754,388 ) — (163,754,388 ) Ordinary Shares Outstanding (c) 13,336,157,383 1,703,210,812 15,039,368,195 Savings Shares Issued and Outstanding (d) 6,027,791,699 — 6,027,791,699 28.39 % Total TIM S.p.A. shares issued (a+d) 19,527,703,470 1,703,210,812 21,230,914,282 100.00 % Total TIM S.p.A. shares outstanding (c+d) 19,363,949,082 1,703,210,812 21,067,159,894 Reconciliation between the number of outstanding shares at December 31, 2016 and December 31, 2017 Shares as of Share Shares as of Percentage of (number of shares) Ordinary Shares issued (a) 15,203,122,583 — 15,203,122,583 71.61 % Less: Treasury Shares (b) (163,754,388 ) (163,754,388 ) Ordinary Shares Outstanding (c) 15,039,368,195 — 15,039,368,195 Savings Shares Issued and Outstanding (d) 6,027,791,699 6,027,791,699 28.39 % Total TIM S.p.A. shares issued (a+d) 21,230,914,282 — 21,230,914,282 100.00 % Total TIM S.p.A. shares outstanding (c+d) 21,067,159,894 — 21,067,159,894 Reconciliation between the number of outstanding shares at December 31, 2017 and December 31, 2018 Shares as of Share Shares as of Percentage of (number of shares) Ordinary Shares issued (a) 15,203,122,583 — 15,203,122,583 71.61 % Less: Treasury Shares (b) (163,754,388 ) (163,754,388 ) Ordinary Shares Outstanding (c) 15,039,368,195 — 15,039,368,195 Savings Shares Issued and Outstanding (d) 6,027,791,699 6,027,791,699 28.39 % Total TIM S.p.A. shares issued (a+d) 21,230,914,282 — 21,230,914,282 100.00 % Total TIM S.p.A. shares outstanding (c+d) 21,067,159,894 — 21,067,159,894 Reconciliation between the value of the outstanding shares as of December 31, 2015 and December 31, 2016 Share capital as of Change in share Share capital as of (millions of euros) Ordinary Shares issued (a) 7,425 937 8,362 Less: Treasury Shares (b) (90 ) — (90 ) Ordinary Shares Outstanding (c) 7,335 937 8,272 Savings Shares Issued and Outstanding (d) 3,315 — 3,315 Total TIM S.p.A. share capital issued (a+d) 10,740 937 11,677 Total TIM S.p.A. share capital outstanding (c+d) 10,650 937 11,587 Reconciliation between the value of the outstanding shares as of December 31, 2016 and December 31, 2017 Share capital as of Change in share capital Share capital as of (millions of euros) Ordinary Shares issued (a) 8,362 — 8,362 Less: Treasury Shares (b) (90 ) — (90 ) Ordinary Shares Outstanding (c ) 8,272 — 8,272 Savings Shares Issued and Outstanding (d) 3,315 — 3,315 Total TIM S.p.A. share capital issued (a+d) 11,677 — 11,677 Total TIM S.p.A. share capital outstanding (c+d) 11,587 — 11,587 Reconciliation between the value of the outstanding shares as of December 31, 2017 and December 31, 2018 Share capital as of Change in share capital Share capital as of (millions of euros) Ordinary Shares issued (a) 8,362 — 8,362 Less: Treasury Shares (b) (90 ) — (90 ) Ordinary Shares Outstanding (c ) 8,272 — 8,272 Savings Shares Issued and Outstanding (d) 3,315 — 3,315 Total TIM S.p.A. share capital issued (a+d) 11,677 — 11,677 Total TIM S.p.A. share capital outstanding (c+d) 11,587 — 11,587
Summary of Sundry Reserves and Retained Earnings (Accumulated Losses), Including Profit (Loss)	Other sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year Year ended 2018 2017 (millions of euros) IFRS 9 and IFRS 15 Adoption (92 ) — Profit (loss) for the year attributable to Owners of the Parent (1,411 ) 1,121 Dividends approved—TIM S.p.A. (166 ) (166 ) Grant of equity instruments 2 (6 ) Other changes 2 9 Change for the year in Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year (1,665 ) 958
Summary of Equity Attributable to Non-controlling Interests	Non-controlling Year ended 2018 2017 (millions of euros) IFRS 9 and IFRS 15 Adoption (5 ) — Profit (loss) for the year attributable to Non-controlling 259 166 Group Company dividends paid to non-controlling (115 ) (64 ) Changes in the Reserve for exchange differences on translating foreign operations (169 ) (236 ) Other changes 23 14 Change for the year in Equity attributable to Non-Controlling (7 ) (120 )

Financial Liabilities (Non-cu_2

Financial Liabilities (Non-current and Current) (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Non-current and Current Financial Liabilities	Non-current As of December 31, 2018 2017 (millions of euros) Financial payables (medium/long-term): Bonds 16,686 18,119 Convertible Bonds 1,893 1,862 Amounts due to banks 3,160 3,798 Other financial payables 155 161 21,894 23,940 Finance lease liabilities (medium/long-term) 1,740 2,249 Other financial liabilities (medium/long-term): Hedging derivatives relating to hedged items classified as non-current 1,423 1,914 Non-hedging 2 5 Other liabilities — — 1,425 1,919 Total Non-current (A) 25,059 28,108 Financial payables (short-term): Bonds 2,912 2,215 Convertible Bonds 6 6 Amounts due to banks 2,385 2,183 Other financial payables 64 96 5,367 4,500 Finance lease liabilities (short-term) 208 181 Other financial liabilities (short-term): Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature 338 71 Non-hedging — 4 Other liabilities — — 338 75 Total Current financial liabilities (B) 5,913 4,756 Financial liabilities directly associated with Discontinued operations/Non-current (C) — — Total Financial liabilities (Gross financial debt) (A+B+C) 30,972 32,864
Summary of Gross Financial Debt	Gross financial debt according to the original currency of the transaction is as follows: As of December 31, 2018 As of December 31, 2017 (millions of (millions of (millions of (millions of USD 6,450 5,633 7,168 5,977 GBP 1,267 1,416 1,266 1,427 BRL 2,609 588 5,863 1,478 JPY 20,033 159 20,031 148 EURO — 23,176 — 23,834 Total 30,972 32,864
Summary of Gross Financial Debt by Effective Interest Rate	The breakdown of gross financial debt by effective interest rate bracket related to the original transaction excluding the effect of any hedging instruments, is provided below: As of December 31, 2018 2017 (millions of euros) Up to 2.5% 5,173 5,005 From 2.5% to 5% 10,534 10,571 From 5% to 7.5% 10,130 11,265 From 7.5% to 10% 2,209 2,690 Over 10% 443 589 Accruals/deferrals, MTM and derivatives 2,483 2,744 Total 30,972 32,864
Summary of Gross Financial Debt by Nominal Interest Rate	Following the use of derivative hedging instruments, on the other hand, the gross financial debt by nominal interest rate bracket is: As of December 31, 2018 2017 (millions of euros) Up to 2.5% 12,667 13,071 From 2.5% to 5% 7,881 6,631 From 5% to 7.5% 6,155 7,366 From 7.5% to 10% 1,343 1,849 Over 10% 443 1,203 Accruals/deferrals, MTM and derivatives 2,483 2,744 Total 30,972 32,864
Summary of Maturities of Financial Liabilities	Details of the maturities of Financial liabilities—at nominal repayment amount Maturing by December 31, of the year 2019 2020 2021 2022 2023 After Total (millions of euros) Bonds 2,446 1,267 564 3,087 2,419 11,238 21,021 Loans and other financial liabilities 1,293 384 1,343 819 331 221 4,391 Finance lease liabilities 190 181 172 132 130 1,124 1,929 Total 3,929 1,832 2,079 4,038 2,880 12,583 27,341 Current financial liabilities 1,308 — — — — — 1,308 Total 5,237 1,832 2,079 4,038 2,880 12,583 28,649
Summary of Components of Financial Liabilities	Bonds As of December 31, 2018 2017 (millions of euros) Non-current 16,686 18,119 Current portion 2,912 2,215 Total carrying amount 19,598 20,334 Fair value adjustment and measurement at amortized cost (577 ) (559 ) Total nominal repayment amount 19,021 19,775
Summary of Components of Financial Liabilities	This item was broken down as follows: As of December 31, 2018 2017 (millions of euros) Non-current 1,893 1,862 Current portion 6 6 Total carrying amount 1,899 1,868 Fair value adjustment and measurement at amortized cost 101 132 Total nominal repayment amount 2,000 2,000
Summary of Bonds Issued	The following table lists the bonds issued by companies of the TIM Group, by issuing company, expressed at the nominal repayment amount, net of bond repurchases, and also at market value: Currency Amount Nominal Coupon Issue Maturity Issue Market price Market value Bonds issued by TIM S.p.A. Euro 832.4 832.4 5.375% 1/29/04 1/29/19 99.070 100.486 836 GBP 850.0 950.2 6.375% 6/24/04 6/24/19 98.850 101.761 967 Euro 719.4 719.4 4.000% 12/21/12 1/21/20 99.184 103.331 743 Euro 547.5 547.5 4.875% 9/25/13 9/25/20 98.966 106.290 582 Euro 563.6 563.6 4.500% 1/23/14 1/25/21 99.447 105.849 597 Euro (b) 202.7 202.7 6 month Euribor (base 365) 01/01/02 01/01/22 100 100 203 Euro 883.9 883.9 5.250% 02/10/10 02/10/22 99.295 108.430 958 Euro (c)2,000 2,000 1.125% 3/26/15 3/26/22 100 99.934 1,879 Euro 1,000 1,000 3.250% 1/16/15 1/16/23 99.446 102.010 1,020 GBP 375 419.2 5.875% 5/19/06 5/19/23 99.622 104,518 438 Euro 1,000 1,000 2.500% 1/19/17 7/19/23 99.288 98.417 984 Euro 750 750 3.625% 1/20/16 1/19/24 99.632 103.328 775 USD 1,500 1,310 5.303% 5/30/14 5/30/24 100 95.530 1,251 Euro 1,000 1,000 3.000% 9/30/16 9/30/25 99.806 97.468 975 Euro 750 750 2.875% 06/28/18 01/28/26 100 95.218 714 Euro 1,000 1,000 3.625% 5/25/16 5/25/26 100 99.952 1,000 Euro 1,250 1,250 2.375% 10/12/17 10/12/27 99.185 89.357 1,117 Euro 670 670 5.250% 03/17/05 03/17/55 99.667 97.104 651 Sub-Total 15,849 15,690 Bonds issued by Telecom Italia Finance S.A. and guaranteed by TIM S.p.A. Euro 1,015 1,015 7.750% 01/24/03 01/24/33 (a) 109.646 125.429 1,273 Sub-Total 1,015 1,273 Bonds issued by Telecom Italia Capital S.A. and guaranteed by TIM S.p.A. USD (d) 759.7 663.4 7.175% 06/18/09 06/18/19 100 101.358 672 USD 1,000 873.4 6.375% 10/29/03 11/15/33 99.558 90.113 787 USD 1,000 873.4 6.000% 10/06/04 09/30/34 99.081 87.489 764 USD 1,000 873.4 7.200% 07/18/06 07/18/36 99.440 96.061 839 USD 1,000 873.4 7.721% 06/04/08 06/04/38 100 99.471 869 Sub-Total 4,157 3,931 Total 21,021 20,894 (a) Weighted average issue price for bonds issued with more than one tranche. (b) Reserved for employees. (c) Bond convertible into newly-issued TIM S.p.A. ordinary treasury shares. (d) Net of the securities bought back by TIM S.p.A. on July 20, 2015.
Summary of Changes in Bonds	The following table lists the changes in bonds during 2018: New issues Currency Amount Issue date Telecom Italia S.p.A. 750 million euros 2.875% maturing 01/28/2026 Euro 750 6/28/2018 Repayments Currency Amount Repayment date Telecom Italia S.p.A. 593 million euros 4.750% (1) Euro 593 5/25/2018 Telecom Italia S.p.A. 677 million US dollars 6.999% (2) USD 677 6/4/2018 Telecom Italia S.p.A. 582 million euros 6.125% (3) Euro 582 12/14/2018 (1) Net of buy-backs (2) Net of the securities bought back by TIM S.p.A. (323 million US dollars) on July 20, 2015. (3) Net of buy-backs
Summary of Composition and Drawdown of Committed Credit Lines Available	The following table shows the composition and the drawdown of the committed credit lines available at December 31, 2018: As of December 31, 2018 2017 Agreed Drawn down Agreed Drawn down (billions of euros) Revolving Credit Facility—maturing May 2019 — — 4.00 — Revolving Credit Facility—maturing March 2020 — — 3.00 — Revolving Credit-Facility—maturing January 2023 5.00 — — — Total 5.00 — 7.00 —
Summary of Three Rating Agencies-standard & Poor's, Moody's and Fitch Ratings-rated Tim	At December 31, 2018, the three rating agencies—Standard & Poor’s, Moody’s and Fitch Ratings—rated TIM as follows: Rating Outlook STANDARD &POOR’S BB+ Stable MOODY’S Ba1 Stable FITCH RATINGS BBB- Negative
Summary of Non-current and Current Financial Liabilities	Additional cash flow information required by IAS 7. Cash transactions Non cash transactions As of Receipts Payments and/or Exchange Fair Other As of (millions of euros) Financial payables (medium/long-term): Bonds 20,334 750 (1,751 ) 249 15 1 19,598 Convertible Bonds 1,868 31 1,899 Amounts due to banks 5,080 1,705 (2,425 ) (86 ) 23 4,297 Other financial payables 175 (4 ) 9 (23 ) 157 (a) 27,457 2,455 (4,180 ) 172 15 32 25,951 of which short term 3,517 4,057 Finance lease liabilities (medium/long-term) 2,430 91 (246 ) (42 ) (285 ) 1,948 (b) 2,430 91 (246 ) (42 ) — (285 ) 1,948 of which short term 181 208 Other financial liabilities (medium/long-term): Hedging derivatives relating to hedged items classified as non-current 1,985 (28 ) (190 ) (6 ) 1,761 Non-hedging 9 (4 ) (3 ) 2 Other liabilities — — (c) 1,994 — — (32 ) (190 ) (9 ) 1,763 of which short term 75 338 Financial payables (short-term): Amounts due to banks 901 1,793 (1,446 ) — 1,248 Other financial payables 82 (20 ) 62 (d) 983 1,793 (1,446 ) — — (20 ) 1,310 Total Financial liabilities (Gross financial debt) (e=a+b+ c+d) 32,864 4,339 (5,872 ) 98 (175 ) (282 ) 30,972 Hedging derivatives relating to hedged items classified as current and non-current (f) 1,755 89 (115 ) 3 1,732 Non hedging derivatives (g) 22 (1 ) (2 ) 19 Total (h=e-f-g) 31,087 4,339 (5,872 ) 10 (58 ) (285 ) 29,221
Summary of Additional Cash Flow Information	The value of the paid and collected interest expense reported in the Report on Operations takes into account the movements relating to transactions in CCIRS derivatives to hedge underlying assets in both the assets component (collections) and the liabilities component (payments) without netting the positions. 2018 2017 (millions of euros) Interest expense paid (1,978 ) (2,899 ) Interest income received 871 1,636 Net total (1,107 ) (1,263 ) To consider the components of CCIRS derivatives as a single transaction, a representation is given with interest flows in and out shown net. This approach gives the following results: 2018 2017 (millions of euros) Interest expense paid (1,485 ) (2,304 ) Interest income received 378 1,041 Net total (1,107 ) (1,263 )

Financial Risk Management (Tabl

Financial Risk Management (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Total Financial Liabilities at Nominal Repayment Amount	Total financial liabilities (at the nominal repayment amount) As of December 31, 2018 As of December 31, 2017 Fixed Variable Total Fixed Variable Total (millions of euros) Bonds 16,484 4,537 21,021 17,237 4,538 21,775 Loans and other financial liabilities(*) 2,820 3,500 6,320 3,689 3,881 7,570 Total non-current 19,304 8,037 27,341 20,926 8,419 29,345 Total current financial liabilities(*) 857 451 1,308 282 700 982 Total 20,161 8,488 28,649 21,208 9,119 30,327 (*) At December 31, 2017, variable-rate current liabilities included 38 million euros of payables to other lenders for installments paid in advance, which are classified in this line item even though they are not correlated to a definite rate parameter.
Summary of Total Financial Assets	Total financial assets (at the nominal investment amount) As of December 31, 2018 As of December 31, 2017 Fixed Variable Total Fixed Variable Total (millions of euros) Cash and cash equivalents — 1,695 1,695 — 2,930 2,930 Securities 950 401 1,351 623 1,100 1,723 Other receivables 879 71 950 927 79 1,006 Total 1,829 2,167 3,996 1,550 4,109 5,659
Summary of Total Financial Liabilities	Total financial liabilities As of December 31, 2018 As of December 31, 2017 Adjusted Effective Adjusted Effective (millions of (%) (millions of (%) Bonds 20,808 4.83 21,521 4.96 Loans and other financial liabilities 7,681 3.02 8,599 3.59 Total 28,489 4.34 30,120 4.57
Summary of Total Financial Assets	Total financial assets As of December 31, 2018 As of December 31, 2017 Adjusted Effective Adjusted Effective (millions of (%) (millions of (%) Cash and cash equivalents 1,695 0.12 2,930 0.05 Securities 1,351 3.13 1,723 4.07 Other receivables 182 2.96 326 2.03 Total 3,228 1.54 4,979 1.57
Summary of Financial liabilities-Maturities of Contractually Expected Disbursements	Financial liabilities—Maturities of contractually expected disbursements Maturing by December 31, of the year 2019 2020 2021 2022 2023 After 2023 Total (millions of euros) Bonds Principal 2,446 1,267 564 3,087 2,419 11,238 21,021 Interest 927 799 743 706 649 5,255 9,079 Loans and other financial liabilities (*) Principal 1,293 384 1,343 819 331 221 4,391 Interest (52 ) (55 ) (71 ) (85 ) (96 ) (808 ) (1,167 ) Finance lease liabilities Principal 190 181 172 132 130 1,124 1,929 Interest 135 126 116 108 100 561 1,146 Non-current Principal 3,929 1,832 2,079 4,038 2,880 12,583 27,341 Interest 1,010 870 788 729 653 5,008 9,058 Current financial liabilities Principal 1,308 — — — — — 1,308 Interest 3 — — — — — 3 Total financial liabilities Principal 5,237 1,832 2,079 4,038 2,880 12,583 28,649 Interest 1,013 870 788 729 653 5,008 9,061 (*) These include hedging and non-hedging
Summary of Derivatives on Financial Liabilities-Contractually Expected Interest Flows	Derivatives on financial liabilities—Contractually expected interest flows Maturing by December 31, of the year 2019 2020 2021 2022 2023 After 2023 Total (millions of euros) Disbursements 350 298 297 297 289 2,343 3,874 Receipts (499 ) (424 ) (424 ) (424 ) (414 ) (3,313 ) (5,498 ) Hedging derivatives—net (receipts) disbursements (149 ) (126 ) (127 ) (127 ) (125 ) (970 ) (1,624 ) Disbursements 39 27 18 16 9 23 132 Receipts (12 ) (7 ) (4 ) (4 ) (2 ) (6 ) (35 ) Non-hedging 27 20 14 12 7 17 97 Total net (receipts) disbursements (122 ) (106 ) (113 ) (115 ) (118 ) (953 ) (1,527 )

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Derivative Financial Instrument By Type	The following tables break down the financial derivatives by type of risk for each kind of hedging, separating financial assets and liabilities. For CCIRS, the notional amount refers to the contractual value in euros, for IRS in a currency other than the euro, the value is indicated at the market exchange rate. Type Hedged Risk Notional amount Notional amount Spot (*) Mark-to-Market Spot (*) Mark-to-Market (millions of euros) Interest rate swaps Interest rate risk 4,334 4,334 52 2 Cross Currency and Interest Rate Swaps Interest rate risk and currency exchange rate risk — — — — Total Fair Value Hedge Derivatives 4,334 4,334 52 2 Interest rate swaps Interest rate risk 4,992 5,178 182 346 Cross Currency and Interest Rate Swaps Interest rate risk and currency exchange rate risk 6,804 7,239 (365 ) (672 ) Total Cash Flow Hedge Derivatives 11,796 12,417 (183 ) (325 ) Total Non-Hedge 223 213 17 15 Total TIM Group Derivatives 16,353 16,964 (114 ) (308 ) (*) Spot Mark-to-market Fair value hedges Accounting item Nominal Carrying Change in fair value for the year (millions of euro) Interest rate swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (a) 4,334 52 50 Assets 52 Liabilities — — Cross Currency and Interest Rate Swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (b) — — — Assets — — Liabilities — — Derivatives (spot value) (a+b) 4,334 52 50 Accruals 21 Derivatives (gross value) 73 Underlying instruments (1) Bonds—Current / non-current 4,334 (4,368 ) of which the fair value adjustment Fair value adjustment and measurements at amortized cost (c) (58 ) (53 ) Ineffectiveness (a+b+c) (3 ) Fair value adjustment for hedging settled in advance (2) (157 ) (1) Includes the amortized cost value of bonds currently hedged plus the fair value adjustment. (2) Referred to bonds no longer hedged, which are therefore not presented in the table. Cash flow hedges Accounting item Nominal Carrying Change in fair value for the year Change in (millions of euro) Interest rate swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (a) 4,992 182 (165 ) Assets 923 (180 ) Liabilities (741 ) 15 Cross Currency and Interest Rate Swaps Hedging derivatives relating to hedged items classified as current (non-current) non-current (b) 6,804 (365 ) 307 Assets 590 122 Liabilities (955 ) 185 Derivatives (spot value) (a+b) 11,796 (183 ) 142 Accruals 81 Derivatives (gross value) (102 ) of which equity reserve gains and losses 20 Determination of ineffectiveness Change in derivatives (c) 28 Change in underlying instruments (3) (d) (18 ) Ineffectiveness (4) Positive fair value adjustment of financial derivatives—non-hedging (c+d) 10 Equity reserve Equity reserve balance (720 ) of which due to the fair value of hedging settled in advance (6 ) Reclassification to P&L Negative reversal of the reserve for the fair value adjustment of hedging derivatives (cash flow hedges) (2 ) (3) Hypothetical derivatives used in measuring the effectiveness of cash flow hedges. (4) The ineffectiveness, due to its nature and calculation, does not necessarily coincide with the difference in cumulative changes in the fair value of derivatives and the underlying; the effect due to the adoption of CVA/DVA is not considered.
Summary of Change in the Equity Reserve Attributable to the Effective Hedging Component	The change in the equity reserve attributable to the effective hedging component is equal to 26 million euros and comprises: Change Changes in the equity cash As of Hedging instrument Reversal from Reversal for the fair value adjustment of Other As of (millions of euros) (746 ) (720 ) Change in the effective fair value of derivatives 20 Change in the CVA/DVA 8 Reversal for ineffectiveness 2017 (5 ) Amortization in P&L of the fair value of hedging settled in advance 2 Other 1 Overall change 26
Schedule of Transactions Hedged by Cash Flow Hedges	The transactions hedged by cash flow hedges will generate cash flows and produce economic effects in the income statement in the periods indicated in the following table: Currency of Notional amount Start of End of Rate applied Interest period Notional in Rate in euro GBP 850 Jan-19 Jun-19 6.375% Annually 1,214 5.311% GBP 375 Jan-19 May-23 5.875% Annually 552 5.535% JPY* 20,000 Jan-19 Oct-29 5.000% Semiannually 174 5.940% JPY** 20,000 Jan-19 Oct-29 0.750% Semiannually 138 0.696% USD 1,000 Jan-19 Nov-33 6.375% Semiannually 849 5.994% USD 1,500 Jan-19 May-24 5.303% Semiannually 1,099 4.226% USD 760 Jan-19 Jun-19 7.175% Semiannually 549 6.689% USD 1,000 Jan-19 Sept-34 6.000% Semiannually 794 4.332% USD 1,000 Jan-19 July-36 7.200% Semiannually 791 5.884% USD 1,000 Jan-19 Jun-38 7.721% Semiannually 645 7.470% * Coupon-bearing bond flows are denominated in USD and calculated on a notional of 187.6 million USD. ** Only hedging of coupon-bearing bond flow as a result of step-up

Supplementary Disclosures on _2

Supplementary Disclosures on Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Fair Value Hierarchy for Each Category/Class of Financial Asset/Liability	Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2018 Amounts recognized in the financial statements Levels of hierarchy or of IFRS 9 Note Carrying Amortized Fair value Fair value Level 1 Level 2 Level 3 Amounts Fair Value at (millions of euros) Assets Financial assets measured at ammortized cost AC 5,800 5,800 — — 5,800 Non-current Receivables from employees 9 43 43 Other financial receivables 9 — — Miscellaneous receivables ( non-current) 10 326 326 Current Assets Receivables from employees 9 14 14 Other short-term financial receivables 9 2 2 Cash and cash equivalents 9 1,917 1,917 Trade receivables 13 3,327 3,327 Other receivables (current) 13 125 125 Contract Assets 46 46 Financial assets measured at fair value through other comprehensive income FTVOCI 994 — 994 — 994 Non-current Other investments 9 49 49 3 16 30 Securities other than investments — — — Current Assets 9 Trade receivables — Securities other than investments 945 945 945 Financial assets measured at fair value through profit or loss FVTPL 9 200 — — 200 200 Non-current Non-hedging 9 7 7 7 — Current Assets Securities other than investments: 181 181 181 Non-hedging 12 12 12 Hedging derivatives HD 9 1,732 — 1,659 73 1,732 Non-current Hedging derivatives 9 1,490 1,438 52 1,490 — Current Assets Hedging derivatives 9 242 221 21 242 — Financial receivables for lease contracts n.a. 9 124 124 124 Non-current 8 54 54 Current Assets 70 70 Total 8,850 5,800 2,653 273 1,129 1,767 30 124 8,850 Carrying amount and fair value hierarchy for each category/class of financial asset/liability and comparison with their fair value at December 31, 2017 Amounts recognized in the financial Levels of IAS 39 Note Carrying Amortized Cost Fair value Fair value Level 1 Level 2 Amounts Fair Value at (millions of euros) Assets Loans and receivables LaR 7,914 7,913 1 7,914 Non-current Receivables from employees 9 47 47 Other financial receivables 9 150 150 Miscellaneous receivables (non-current) 10 371 370 1 Current Assets Receivables from employees 9 16 16 Other short-term financial receivables 9 101 101 Cash and cash equivalents 9 3,575 3,575 Trade receivables 13 3,500 3,500 Other receivables (current) 13 154 154 Available-for-sale Afs 1,044 28 1,016 1,044 Non-current Other investments 8 51 28 23 3 20 Securities other than investments 9 — — — Current Assets Securities other than investments available for sale 9 993 993 993 Financial assets at fair value through profit or loss held for trading FAHfT 22 22 22 Non-current Non-hedging 9 7 7 7 Current Assets Non-hedging 9 15 15 15 Securities other than investments: held for trading — — — Hedging derivatives HD 1,755 1,713 42 1,755 Non-current Hedging derivatives 9 1,495 1,474 21 1,495 Current Assets Hedging derivatives 9 260 239 21 260 Financial receivables for lease contracts n.a. 114 114 114 Non-current 9 69 69 Current Assets 9 45 45 Total 10,849 7,913 29 2,729 64 996 1,797 114 10,849 Amounts recognized in the financial Levels of ifrs 9 Note Carrying Amortized Cost Fair value Fair value Level 1 Level 2 Amounts Fair Value at (millions of euros) Liabilities Financial liabilities at amortized cost FLAC/HD 33,355 33,355 36,023 Non-current Financial payables 16 23,940 23,940 — Current liabilities Financial payables 16 4,500 4,500 — Trade and miscellaneous payables and other current liabilities 22 4,915 4,915 Financial liabilities at fair value through profit or loss held for trading FLHfT 9 9 9 Non-current Non-hedging 16 5 5 5 Current liabilities Non-hedging 16 4 4 4 Hedging derivatives HD 1,985 1,966 19 1,985 Non-current Hedging derivatives 16 1,914 1,895 19 1,914 Current liabilities Hedging derivatives 16 71 71 — 71 Finance lease liabilities n.a. 2,430 2,430 3,604 Non-current 16 2,249 2,249 Current liabilities 16 181 181 Total 37,779 33,355 — 1,966 28 — 1,994 2,430 41,621
Classification of Financial Assets and Liabilities at Date of First Application of IFRS 9	Classification of financial assets and liabilities at the date of first application of IFRS 9 (1/1/2018) (*) The following tables state the financial assets and liabilities at 1/1/2018 broken down by: · new category determined in compliance with IFRS 9. · original category determined in compliance with IAS 39; IFRS 9 Note Carrying amounts IAS 39 Carrying amounts (millions of euros) Assets Financial assets measured at ammortized cost AC 7,802 LaR 7,914 Non-current Receivables from employees 9 47 47 Other financial receivables 9 150 150 Miscellaneous receivables ( non-current) 10 371 371 Current Assets Receivables from employees 9 16 16 Other short-term financial receivables 9 101 101 Cash and cash equivalents 9 3,575 3,575 Trade receivables 13 3,353 3,500 Other receivables (current) 13 154 154 Contract Assets 13 35 — Financial assets measured at fair value through other comprehensive income FVTOCI 1,044 AfS 1,044 Non-current Other investments 8 51 51 Securities other than investments 9 — — Current Assets Trade receivables 13 — — Securities other than investments 9 993 993 Financial assets measured at fair value through profit or loss FVTPL 22 FAHfT 22 Non-current Non-hedging 9 7 7 Current Assets Securities other than investments 9 — — Non-hedging 9 15 15 Hedging derivatives HD 1,755 HD 1,755 Non-current Hedging derivatives 9 1,495 1,495 Current Assets Hedging derivatives 9 260 260 Financial receivables for lease contracts n.a. 114 n.a. 114 Non-current 9 69 69 Current Assets 9 45 45 Total 10,737 10,849 (*) For additional details, please refer to what is explained in the Note “Accounting standards” and in the respective notes. IFRS 9 Note Carrying amounts IAS 39 Carrying amounts (millions of euros) Liabilities Financial liabilities measured at ammortized cost AC/HD 33,389 FLAC/HD 33,355 Non-current Financial payables 16 23,940 23,940 Current liabilities Financial payables 16 4,500 4,500 Trade and miscellaneous payables and other current liabilities 4,915 4,915 Contract Liabilities 22 34 — Financial liabilities measured at fair value through profit or loss FVTPL 22 9 FLHfT 9 Non-current Non-hedging 16 5 5 Current liabilities Non-hedging 16 4 4 Hedging derivatives HD 1,985 1,985 Non-current Hedging derivatives 16 1,914 1,914 Current liabilities Hedging derivatives 16 71 71 Finance lease liabilities n.a. 2,430 2,430 Non-current 2,249 2,249 Current liabilities 181 181 Total 37,813 37,779 (*) For additional details, please refer to what is explained in the Note “Accounting standards” and in the respective notes.
Summary of Gains and Losses by IAS 39 Category	Gains and losses by IFRS 9 category—Year 2018 IFRS 9 Net gains/ of which (millions of euros) Assets measured at amortized cost AC (540 ) 40 Assets and liabilities measured at fair value through profit or loss FVTPL 25 Assets measured at fair value recognized in the statements of comprehensive income FVTOCI 7 Liabilities measured at amortized cost AC (1,160 ) 1,178 Total (1,668 ) 1,218 (1) Of which 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss. Gains and losses by IAS 39 category—Year 2017 IAS 39 Net gains/(losses) of which (millions of euros) Loans and Receivables LaR (356 ) 118 Available-for-Sale AfS 8 Financial Assets/Liabilities Held for Trading FAHfT/FLHfT (19 ) Financial Liabilities at Amortized Cost FLAC (1,338 ) 1,376 Total (1,705 ) 1,494 (1) Of which, 2 million euros relates to fees and expenses not included in the effective interest rate calculation on financial assets/liabilities other than those at fair value through profit or loss.

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Provisions for Employee Benefits	Employee benefits decreased by 214 million euros compared to December 31, 2017 and are summarized as follows: As of Increases/ Present Decrease Exchange As of (millions of euros) Provision for employee severance indemnities (A) 1,009 (51 ) 958 Provision for pension plans and other 28 (2 ) (1 ) (3 ) 22 Provision for termination benefit incentives and Corporate restructuring expenses 348 689 (177 ) (7 ) 853 Total other provisions for employee benefits (B) 376 687 (178 ) (10 ) 875 Total (A+B) 1,385 687 (229 ) (10 ) 1,833 Of which: Non-current 1,355 1,736 Current portion (*) 30 97 (*) The current portion refers only to Other provisions for employee benefits. As of Increases/ Decrease Exchange As of (millions of euros) Provision for employee severance indemnities (A) 958 (8 ) (63 ) — 887 Provision for pension plans and other 22 3 (3 ) 22 Provision for termination benefit incentives and Corporate restructuring expenses 853 205 (348 ) 710 Total other provisions for employee benefits (B) 875 208 (351 ) — 732 Total (A+B) 1,833 200 (414 ) — 1,619 Of which: Non-current 1,736 1,567 Current portion (*) 97 52 (*) The current portion refers only to Other provisions for employee benefits.
Summary of Increases in Present Value of Employee Benefits	The Provision for employee severance indemnities only refers to Italian companies and decreased overall by 71 million euros. The reduction of 63 million euros under “Decreases” refers to ordinary advances and uses paid during the year to employees who terminated employment. The lower cost of the item “increases/discounting” mainly includes the following: Year ended December 31, 2018 2017 2016 (millions of euros) (Positive)/negative effect of curtailment — (6 ) — Current service cost (*) — — — Finance expenses 13 14 16 Net actuarial (gains) losses for the year (23 ) (8 ) 33 Total (10 ) — 49 Effective return on plan assets there are no assets servicing the plan (*) The portions intended for the INPS Treasury Fund or for the supplementary pension funds have been recorded under “Employee benefits expenses” and “Social security expenses”. The latter account is used only for the severance indemnity expenses of companies with less than 50 employees.
Summary of Emplyee Benefits Assumptions	The following assumptions have been made: FINANCIAL ASSUMPTIONS Executives Non-executives Inflation rate 1.50% per annum 1.50% per annum Discount rate 1.57% per annum 1.57% per annum Employee severance indemnities annual increase rate 2.625% per annum 2.625% per annum Annual real wage growth: equal to or less than 40 years of age 1.0% per annum 1.0% per annum over 40 but equal to or less than 55 years of age 0.5% per annum 0.5% per annum over 55 years of age 0.0% per annum 0.0% per annum DEMOGRAPHIC ASSUMPTIONS Executives Non-executives Probability of death RG 48 mortality tables published by “Ragioneria RG 48 mortality tables published by “Ragioneria Probability of disability INPS tables divided by age and sex INPS tables divided by age and sex Probability of resignation: up to 40 years of age 6.50% 1.00% From 41 to 50 years of age 2.00% 0.50% From 51 to 59 years of age 2.00% 0.50% From 60 to 64 years of age 20.00% 6.50% Over 65 years of age None None Probability of retirement Reaching the minimum requisites established by the Obligatory General Insurance updated on the basis of Italian Law 214 of December 22, 2011 Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70% 1.5% per annum 1.5% per annum
Summary of Sensitivity Analysis for Actuarial Assumptions	The weighted average duration of the obligation is 11.9 years. CHANGES IN ASSUMPTIONS Amounts (millions of euros) Turnover rate: +0.25 p.p. (2 ) - 0.25 p.p. 2 Annual inflation rate: +0.25 p.p. 19 - 0.25 p.p. (18 ) Annual discount rate: +0.25 p.p. (25 ) - 0.25 p.p. 26

Provisions (Tables)

Provisions (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Other Provisions	Provisions increased by 103 million euros compared to December 31, 2017. The figure breaks down as follows: As of Increase Used Used Exchange As of (millions of euros) Provision for taxation and tax risks 93 30 — (21 ) 2 104 Provision for restoration costs 350 10 — (13 ) 1 348 Provision for legal disputes 605 244 — (134 ) (6 ) 709 Provision for commercial risks 28 18 — (12 ) (1 ) 33 Provision for risks and charges on investments and corporate-related transactions 32 — (5 ) (6 ) — 21 Other provisions 9 3 (4 ) (8 ) 5 5 Total 1,117 305 (9 ) (194 ) 1 1,220 Of which: Non-current 825 876 Current portion 292 344

Miscellaneous Payables and Ot_2

Miscellaneous Payables and Other Non-Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments accounted for using equity method [abstract]
Schedule of Miscellaneous Payables and Other Non-Current Liabilities	Miscellaneous payables and other non-current As of December 31, 2018 2017 (millions of euros) Miscellaneous payables ( non-current) Payables to social security agencies 275 238 Income tax payables (*) 42 45 Other liabilities 1,919 16 (a) 2,236 299 Other non current liabilities Deferred revenues from contract with customers (Contract liabilities) 109 Other deferred revenue and income 595 Capital grants 357 391 Deferred income 988 (b ) 1,061 1,379 Miscellaneous payables and other non-current (a+b ) 3,297 1,678 (*) Analyzed in the Note “Income tax expense”.
Summary of Impact Caused by Adoption of IFRS 15	The impact caused by the adoption of IFRS 15 are summarized as below: New IFRS Adoption As of IFRS 15 IFRS 15 As of (millions of euros) Miscellaneous payables (non-current) Payables to social security agencies 238 — — 238 Income tax payables (*) 45 — — 45 Other liabilities 16 — — 16 299 — — 299 Other non current liabilities Deferred revenues from contract with customers (Contract liabilities) — 350 (251 ) 99 Other deferred revenue and income — 638 638 Capital grants 391 — 391 Deferred income 988 (988 ) — — 1,379 — (251 ) 1,128 Miscellaneous payables and other non-current 1,678 — (251 ) 1,427
Schedule of Payables to Social Security Agencies	· payables to social security agencies 1-7ter, Details are as follows: As of December 31, 2018 2017 (millions of euros) Non-current Due from 2 to 5 years after the end of the reporting period 259 226 Due beyond 5 years after the end of the reporting period 16 12 275 238 Current payables 173 58 Total 448 296

Trade and Miscellaneous Payab_2

Trade and Miscellaneous Payables and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments accounted for using equity method [abstract]
Summary of Trade and Miscellaneous Payables and Other Current Liabilities	Trade and miscellaneous payables and other current liabilities fell by 619 million euros compared to December 31, 2017 and were broken down as follows: As of December 31, 2018 2017 Of which Of which (millions of euros) Payables on construction work (A) 18 19 Trade payables: Payables to suppliers 4,090 4,090 4,262 4,262 Payables to other telecommunication operators 380 380 383 383 (B) 4,470 4,470 4,645 4,645 Tax payables (C) 262 584 Miscellaneous payables: Payables for employee compensation 151 245 Payables to social security agencies 338 202 Payables for “TLC operating fee” 15 15 Dividends approved, but not yet paid to shareholders 35 35 19 19 Other 164 105 223 174 Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year 52 97 Provisions for risks and charges for the current portion expected to be settled within 1 year 344 292 (D) 1,099 140 1,093 193 Other current liabilities Liabilities from contract with customers (Contract liabilities) 931 193 Customer-related items 602 77 Advances received 69 Other deferred revenue and income 121 Trade and miscellaneous deferred income 508 (E) 1,052 193 1,179 77 Trade and miscellaneous payables and other current liabilities (A+B+C+E ) 6,901 4,803 7,520 4,915 As of 2018 New IFRS adoption As of 2018 IFRS 15 IFRS 15 (millions of euros) Payables on construction work (A) 19 — — 19 Trade payables: Payables to suppliers 4,262 — — 4,262 Payables to other telecommunication operators 383 — — 383 (B) 4,645 — — 4,645 Tax payables (C) 584 584 Miscellaneous payables: Payables for employee compensation 245 — — 245 Payables to social security agencies 202 — — 202 Payables for “TLC operating fee” 15 — — 15 Dividends approved, but not yet paid to shareholders 19 — — 19 Other 223 — — 223 Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year 97 — — 97 Provisions for risks and charges for the current portion expected to be settled within 1 year 292 — — 292 (D) 1,093 — — 1,093 Other current liabilities Liabilities from contract with customers (Contract liabilities) — 1,033 (113 ) 920 Customer-related items 602 (602 ) — — Advances received 69 (69 ) — — Other deferred revenue and income 146 — 146 Trade and miscellaneous deferred income 508 (508 ) — — (E) 1,179 — (113 ) 1,066 Trade and miscellaneous payables and other current liabilities (A+B+C+D+E) 7,520 — (113 ) 7,407

Contingent Liabilities, Other_2

Contingent Liabilities, Other Information, Commitments and Guarantees (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Information on Main Guarantees for Loans	Main guarantees for loans at December 31, 2018 Issuer Amount (millions of euros) SACE 368 BBVA—Banco Bilbao Vizcaya Argentaria 210 Cassa Depositi e Prestiti 158 Intesa Sanpaolo 115 Ing 105 Unicredit 105 Commerzbank 57 Banco Santander 52 Sumitomo Mitsui Banking 52 1) The amounts shown in the table relate to loans issued by the EIB for the TIM Broadband Digital Divide, TIM Ricerca & Sviluppo Banda Larga, TIM Rete Mobile a Banda Larga, and TIM RDI for Broadband Services projects.

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Revenues	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Equipment sales 1,538 1,560 1,378 Services 17,379 18,264 17,655 Revenues on construction contracts 23 4 (8 ) Total 18,940 19,828 19,025

Other Income (Tables)

Other Income (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Disclosure of Other Operating Income	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Late payment fees charged for telephone services 60 59 60 Recovery of employee benefit expenses, purchases and services rendered 27 22 33 Capital and operating grants 39 51 36 Damages, penalties and recoveries connected with litigation 29 40 24 Partnership agreements and other arrangements with suppliers 22 129 71 Estimate revisions and other adjustments 73 188 Other income 91 34 87 Total 341 523 311

Acquisition of Goods and Serv_2

Acquisition of Goods and Services (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Disclosure of Detailed Information About Acquisition of Goods and Services	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Acquisition of raw materials and merchandise (A) 1,957 1,863 1,614 Costs of services: Revenues due to other TLC operators 1,616 1,737 1,686 Costs for access services to Tlc networks 171 217 244 Commissions, sales commissions and other selling expenses 1,158 1,109 937 Advertising and promotion expenses 236 277 294 Professional and consulting services 242 223 186 Utilities 417 467 484 Maintenance 221 240 287 Outsourcing costs for other services 465 513 447 Mailing and delivery expenses for telephone bills, directories and other materials to customers 84 96 98 Other service expenses 634 664 609 (B) 5,244 5,543 5,272 Lease and rental costs: Rent and leases 607 645 616 TLC circuit lease rents 126 119 82 Other lease and rental costs 252 218 209 (C) 985 982 907 Total (A+B+C ) 8,186 8,388 7,793

Employee Benefits Expenses (Tab

Employee Benefits Expenses (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Details of Employee Benefit Expenses	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Employee benefits expenses Wages and salaries 1,994 2,056 2,116 Social security expenses 738 745 770 Other employee benefits 144 110 37 (A) 2,876 2,911 2,923 Costs and provisions for temp work (B) — — — Miscellaneous expenses for personnel and other labor-related services rendered: Charges for termination benefit incentives 8 28 10 Corporate restructuring expenses 216 680 156 Other 5 7 17 (C) 229 715 183 Total (A+B+C) 3,105 3,626 3,106
Details of Average Salaried Workforce Breakdown By Category	The average salaried workforce, including personnel with temp work contracts, stood at 54,423 employees in 2018 (54,946 in 2017). A breakdown by category is as follows: Year ended December 31, 2018 2017 2016 (Full time equivalent units) Executives 646 707 837 Middle management 4,271 4,269 4,450 White collars 49,505 49,967 52,563 Blue collars 1 1 1 Employees on payroll 54,423 54,944 57,851 Employees with temp work contracts 2 4 Total average headcount of salaried workforce 54,423 54,946 57,855

Other Operating Expenses (Table

Other Operating Expenses (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Other Operating Expenses	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Write-downs and expenses in connection with credit management 518 400 335 Provision charges 189 228 144 TLC operating fees and charges 286 356 373 Indirect duties and taxes 125 111 100 Penalties, settlement compensation and administrative fines 73 33 44 Association dues and fees, donations, scholarships and traineeships 12 15 18 Sundry expenses 56 65 69 Total 1,259 1,208 1,083 of which, included in the supplementary disclosure on financial instruments 518 400 335

Internally Generated Assets (Ta

Internally Generated Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Detail Information of Internally Generated Assets	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Intangible assets with a finite useful life 248 272 289 Tangible assets owned 322 354 350 Total 570 626 639

Depreciation and Amortization (

Depreciation and Amortization (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Depreciation and Amortization Expenses	Year ended December 31, 2018 2017 2016 (millions of euros) Amortization of intangible assets with a finite useful life: Industrial patents and intellectual property rights 1,171 1,263 1,243 Concessions, licenses, trademarks and similar rights 422 396 393 Other intangible assets 6 134 107 (A) 1,599 1,793 1,743 Depreciation of tangible assets owned: Buildings (civil and industrial) 36 39 48 Plant and equipment 2,229 2,286 2,170 Manufacturing and distribution equipment 14 16 15 Other 162 159 157 (B) 2,441 2,500 2,390 Depreciation of tangible assets held under finance leases: Buildings (civil and industrial) 159 130 125 Plant and equipment 18 21 17 Other 38 29 16 (C) 215 180 158 Total (A+B+C) 4,255 4,473 4,291

Gains (Losses) on Disposals o_2

Gains (Losses) on Disposals of Non-current Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Gain Losses on Disposal of Non Current Assets	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Gains on disposals of non-current Gains on the retirement/disposal of intangible and tangible assets 13 15 28 Gains on the disposal of investments in subsidiaries — — — (A) 13 15 28 Losses on disposals of non-current Losses on the retirement/disposal of intangible and tangible assets 14 4 14 Losses on the disposals of investments in subsidiaries — — — (B) 14 4 14 Total (A—B) (1 ) 11 14

Impairment Reversals (Losses)_2

Impairment Reversals (Losses) on Non-Current Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Impairment Reversals (Losses) on Non-Current Assets	Year ended December 31, 2018 2017 2016 (millions of euros) Reversals of impairment losses on non-current on intangible assets 4 — — on tangible assets — — — (A ) 4 — — Impairment losses on non-current on intangible assets 2,590 30 — on tangible assets — 7 3 (B) 2,590 37 3 Total (A-B) (2,586 ) (37 ) (3 )

Other Income (Expenses) from _2

Other Income (Expenses) from Investments (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Detailed Information About Other Income (Expenses) from Investments	Details are as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Dividends from Other investments 11 1 7 Net gains on disposals of Other investments — — — Loss and impairment losses on Other investments — (19 ) — Total 11 (18 ) 7

Finance Income and Expenses (Ta

Finance Income and Expenses (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Net Finance Costs/(Income)	Year ended December 31, 2018 2017 2016 (millions of euros) Finance income 1,056 1,808 2,543 Finance expenses (2,404 ) (3,303 ) (3,450 ) Finance income (expenses), net (1,348 ) (1,495 ) (907 )
Summary of Finance Income and Expenses	The items break down as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Interest expenses and other finance expenses: Interest expenses and other costs relating to bonds (1,012 ) (1,100 ) (1,162 ) Interest expenses to banks (72 ) (113 ) (117 ) Interest expenses to others (204 ) (250 ) (246 ) Total interest expenses (1,288 ) (1,463 ) (1,525 ) Commissions (70 ) (91 ) (95 ) Miscellaneous finance expenses(*) (232 ) (256 ) (221 ) Total other finance expenses (302 ) (347 ) (316 ) Interest income and other finance income: Interest income 52 129 151 Income from financial receivables recorded in non-current — — — Income from securities other than investments, recorded in non-current — — — Income from securities other than investments, recorded in current assets 11 14 16 Miscellaneous finance income (*) 61 26 37 Total interest income and other finance income 124 169 204 Total net interest / financial charges (a) (1,466 ) (1,641 ) (1,637 ) Other components of financial income and expense: Net exchange gains and losses (1 ) 23 246 Net result from derivatives 114 132 114 Net fair value adjustment to fair value hedge derivatives and underlying (3 ) 8 — Net fair value adjustments to non-hedging 8 (17 ) 370 Total other components (b) 118 146 730 Total net financial income (expenses) (c=a+b) (1,348 ) (1,495 ) (907 ) of which, included in the supplementary disclosure on financial instruments (1,161 ) (1,306 ) (916 )
Summary Of Financial Assets At Date Of Initial Application Of IFRS 9	(*) Of which IFRS 9 impact: Year ended December 31, 2018 2017 2016 (millions of euros) Income from negative adjustment of IFRS 9 impairment reserve on financial assets measured through FVTOCI 2 — — Expenses from positive adjustment of IFRS 9 impairment reserve on financial assets measured through FVTOCI (12 ) — — Reversal of IFRS 9 impairment reserve on financial assets measured through FVTOCI 4 — — Impairment losses on financial assets other than investments — — —
Summary Net Effects Relating To Derivative Financial Instruments	For greater clarity of presentation, the net effects relating to derivative financial instruments are summarized in the following table: Year ended December 31, 2018 2017 2016 (millions of euros) NET EXCHANGE GAINS AND LOSSES Exchange gains 265 782 713 Exchange losses (266 ) (759 ) (467 ) (1 ) 23 246 NET RESULT FROM DERIVATIVES Income from fair value hedge derivatives 41 66 65 Charges from fair value hedge derivatives — — (1 ) Net result from fair value hedge derivatives (A) 41 66 64 Positive effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component 524 568 649 Negative effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component (446 ) (489 ) (548 ) Net effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component (B) 78 79 101 Income from non-hedging 4 9 13 Charges from non-hedging (9 ) (22 ) (64 ) Net result from non-hedging (C) (5 ) (13 ) (51 ) Net result from derivatives (A+B+C) 114 132 114 Positive fair value adjustment to fair value hedge derivatives 50 — 50 Negative fair value adjustment to underlying financial assets and liabilities of fair value hedge derivatives (53 ) — (45 ) Net fair value adjustments (D) (3 ) — 5 Positive fair value adjustments to underlying financial assets and liabilities of fair value hedge derivatives — 95 173 Negative fair value adjustments to fair value hedge derivatives — (87 ) (178 ) Net fair value adjustments (E) — 8 (5 ) Net fair value adjustment to fair value hedge derivatives and underlying (D+E) (3 ) 8 — NET FAIR VALUE ADJUSTMENTS TO NON-HEDGING Positive fair value adjustments to non-hedging (F) 48 119 676 Negative fair value adjustments to non-hedging (G) (40 ) (136 ) (306 ) Net fair value adjustments to non-hedging (F+G) 8 (17 ) 370

Profit (Loss) for the Year (Tab

Profit (Loss) for the Year (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary Profits (losses) for the Years	Profits (losses) for the years ended December 31, 2018, 2017 and 2016 are summarized as follows: Year ended December 31, 2018 2017 2016 (millions of euros) Profit (loss) for the year (1,152 ) 1,287 1,966 Attributable to: Owners of the Parent Profit (loss) from continuing operations (1,411 ) 1,121 1,811 Profit (loss) from Discontinued operations/Non-current — — (3 ) Profit (loss) for the year attributable to owners of the Parent (1,411 ) 1,121 1,808 Non-controlling Profit (loss) from continuing operations 259 166 108 Profit (loss) from Discontinued operations/Non-current — — 50 Profit (loss) for the year attributable to Non-Controlling 259 166 158

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Schedule of Basic Earnings Per Share	Year ended December 31, 2018 2017 2016 Basic Earnings Per Share Profit (loss) for the year attributable to owners of the Parent (1,411 ) 1,121 1,808 Less: additional dividends for the savings shares (0.011 per share and up to capacity) — (66 ) (66 ) (millions of euros) (1,411 ) 1,055 1,742 Average number of Ordinary and Savings Shares (millions) 21,067 21,067 21,067 Basic earnings per share— Ordinary Shares (0.07 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Basic earnings per share— Savings Shares (euro) (0.07 ) 0.06 0.09 Basic Earnings Per Share From continuing Operations Profit (loss) from continuing operations attributable to owners of the Parent (1,411 ) 1,121 1,811 Less: additional dividends for the Savings Shares — (66 ) (66 ) (millions of euros) (1,411 ) 1,055 1,745 Average number of Ordinary and Savings Shares (millions) 21,067 21,067 21,067 Basic earnings (loss) per share from continuing operations— Ordinary Shares (0.07 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Basic earnings (loss) per share from continuing operations— Savings Shares (Euro) (0.07 ) 0.06 0.09 Basic Earnings Per Share From Discontinued operations/Non-current Profit (loss) from Discontinued operations/Non-current (millions of euros) — — 47 Average number of Ordinary and Savings Shares (millions) 21,067 21,067 21,067 Basic earnings (loss) per share from Discontinued operations/ Non-current (euro) — — — Basic earnings (loss) per share from Discontinued operations/ Non-current (euro) — — — Year ended December 31, 2018 2017 2016 Average number of Ordinary Shares 15,039,368,195 15,039,368,195 15,039,128,128 Average number of Savings Shares 6,027,791,699 6,027,791,699 6,027,791,699 Total 21,067,159,894 21,067,159,894 21,066,919,827 Year ended December 31, 2018 2017 2016 Diluted Earnings Per Share Profit (loss) for the year attributable to Owners of the Parent (1,411 ) 1,121 1,808 Dilution effect of stock option plans and convertible bonds (*) 40 32 43 Less: additional dividends for the savings shares (0.011 per share and up to capacity) — (66 ) (66 ) (millions of euros) (1,371 ) 1,087 1,785 Average number of Ordinary and Savings Shares (millions) 22,167 22,167 22,194 Diluted earnings per share—Ordinary Shares (0.06 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Diluted earnings per share—Savings Shares (euro) (0.06 ) 0.06 0.09 Diluted Earnings Per Share From continuing Operations Profit (loss) from continuing operations attributable to owners of the Parent (1,411 ) 1,121 1,811 Dilution effect of stock option plans and convertible bonds (*) 40 32 43 Less: additional dividends for the Savings Shares — (66 ) (66 ) (millions of euros) (1,371 ) 1,087 1,788 Average number of Ordinary and Savings Shares (millions) 22,167 22,167 22,194 Diluted earnings (loss) per share from continuing operations—Ordinary Shares (0.06 ) 0.05 0.08 Plus: additional dividends per savings Share — 0.01 0.01 Diluted earnings (loss) per share from continuing operations—Savings Shares (euro) (0.06 ) 0.06 0.09 Diluted Earnings Per Share From Discontinued operations/Non-current Profit (loss) from Discontinued operations/Non-current (millions of euros) — — 47 Dilution effect of stock option plans and convertible bonds Average number of Ordinary and Savings Shares (millions) 22,167 22,167 22,194 Diluted earnings per share from Discontinued operations/ Non-current (euro) — — — Diluted earnings per share from Discontinued operations/ Non-current (euro) — — — Year ended December 31, 2018 2017 2016 Average number of Ordinary Shares (*) 16,139,213,020 16,139,681,521 16,166,142,282 Average number of Savings Shares 6,027,791,699 6,027,791,699 6,027,791,699 Total 22,167,004,719 22,167,473,220 22,193,933,981 * The average number of ordinary shares also includes the potential ordinary shares relating to the equity compensation plans of employees for which the (market and non-market)
Potential Future Changes in Share Capital	The table below shows future potential changes in share capital, based on the issuance of the convertible bond by TIM S.p.A. in March 2015, the authorizations to increase the share capital in place at December 31, 2018, and the options and rights granted under equity compensation plans, still outstanding at December 31, 2018. Number of Share capital Additional paid-in capital Subscription Capital increases already approved (ordinary shares) 2014-2016 Stock Option Plan 133,042 73 80 1.15 343,069 189 158 1.01 893,617 492 393 0.99 13,497,406 7,423 5,264 0.94 Stock Options 14,867,134 8,177 5,895 2015 Convertible Bond (ordinary shares) (*) 1,082,485,386 2,000,000 n.a. n.a. Convertible bonds 2,000,000 Total 2,008,177 (*) The number of shares potentially issuable shown may be subject to adjustments.

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Separate Consolidated Income Statements by Operating Segment	SEPARATE CONSOLIDATED INCOME STATEMENTS BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and eliminations Consolidated Total 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 (millions of euros) Third-party revenues 14,998 15,328 14,971 3,942 4,500 4,044 — — 10 — — — 18,940 19,828 19,025 Intragroup revenues 33 26 35 1 2 3 — — 1 (34 ) (28 ) (39 ) — — — Revenues by operating segment 15,031 15,354 15,006 3,943 4,502 4,047 — — 11 (34 ) (28 ) (39 ) 18,940 19,828 19,025 Other income 273 471 259 69 52 51 — — 1 (1 ) — — 341 523 311 Total operating revenues and other income 15,304 15,825 15,265 4,012 4,554 4,098 — — 12 (35 ) (28 ) (39 ) 19,281 20,351 19,336 Acquisition of goods and services (6,360 ) (6,235 ) (5,785 ) (1,846 ) (2,168 ) (2,028 ) (7 ) (4 ) (9 ) 27 19 29 (8,186 ) (8,388 ) (7,793 ) Employee benefits expenses (2,781 ) (3,266 ) (2,759 ) (317 ) (353 ) (336 ) (6 ) (7 ) (11 ) (1 ) — — (3,105 ) (3,626 ) (3,106 ) of which: accruals to employee severance indemnities (1 ) (6 ) (1 ) — — — — — — — — — (1 ) (6 ) (1 ) Other operating expenses (763 ) (704 ) (574 ) (491 ) (500 ) (505 ) (6 ) (5 ) (2 ) 1 1 (2 ) (1,259 ) (1,208 ) (1,083 ) of which: write-downs and expenses in connection with credit management and provision charges (501 ) (468 ) (317 ) (208 ) (160 ) (162 ) — — — 1 — — (708 ) (628 ) (479 ) Change in inventories 88 41 16 14 (6 ) 1 — — (8 ) — — — 102 35 9 Internally generated assets 467 510 535 95 108 95 — — — 8 8 9 570 626 639 Depreciation and amortization (3,340 ) (3,360 ) (3,310 ) (915 ) (1,114 ) (980 ) — — — — 1 (1 ) (4,255 ) (4,473 ) (4,291 ) Gains (losses) on disposals of non-current (13 ) (2 ) (9 ) 12 14 23 — — — — (1 ) — (1 ) 11 14 Impairment reversals (losses) on non-current (2,586 ) (37 ) (3 ) — — — — — — — — — (2,586 ) (37 ) (3 ) Operating profit (loss) 16 2,772 3,376 564 535 368 (19 ) (16 ) (18 ) — — (4 ) 561 3,291 3,722 Share of losses (profits) of associates and joint ventures accounted for using the equity method (1 ) (1 ) (23 ) — — — — — — — — — (1 ) (1 ) (23 ) Other income (expenses) from investments 11 (18 ) 7 Finance income 1,056 1,808 2,543 Finance expenses (2,404 ) (3,303 ) (3,450 ) Profit (loss) before tax from continuing operations (777 ) 1,777 2,799 Income tax expense (375 ) (490 ) (880 ) Profit (loss) from continuing operations (1,152 ) 1,287 1,919 Profit (loss) from Discontinued operations/Non-current — — 47 Profit (loss) for the year (1,152 ) 1,287 1,966 Attributable to: Owners of the Parent (1,411 ) 1,121 1,808 Non-controlling 259 166 158
Revenues by Operating Segment	REVENUES BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and eliminations Consolidated Total 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 (millions of euros) Revenues from equipment sales—third party 1,358 1,350 1,136 180 210 232 — — 10 — — — 1,538 1,560 1,378 Revenues from equipment sales—intragroup — — — — 1 — — — 1 — (1 ) (1 ) — — — Total revenues from equipment sales 1,358 1,350 1,136 180 211 232 — — 11 — (1 ) (1 ) 1,538 1,560 1,378 Revenues from services—third party 13,617 13,974 13,843 3,762 4,290 3,812 — — — — — — 17,379 18,264 17,655 Revenues from services—intragroup 33 26 35 1 1 3 — — — (34 ) (27 ) (38 ) — — — Total revenues from services 13,650 14,000 13,878 3,763 4,291 3,815 — — — (34 ) (27 ) (38 ) 17,379 18,264 17,655 Revenues on construction contracts—third party 23 4 (8 ) — — — — — — — 23 4 (8 ) Revenues on construction contracts—intragroup — — — — — — — — — — — — — — — Total revenues on construction contracts 23 4 (8 ) — — — — — — — 23 4 (8 ) Total third-party revenues 14,998 15,328 14,971 3,942 4,500 4,044 — — 10 — — — 18,940 19,828 19,025 Total intragroup revenues 33 26 35 1 2 3 — — 1 (34 ) (28 ) (39 ) — — — Total revenues by operating segment 15,031 15,354 15,006 3,943 4,502 4,047 — — 11 (34 ) (28 ) (39 ) 18,940 19,828 19,025
Purchase of Intangible and Tangible Assets by Operating Segment	PURCHASE OF INTANGIBLE AND TANGIBLE ASSETS BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and Consolidated Total 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 (millions of euros) Purchase of intangible assets 3,385 1,763 1,113 262 529 528 — — — — — — 3,647 2,292 1,641 Purchase of tangible assets 2,194 2,842 2,792 637 635 675 — — — — — — 2,831 3,477 3,467 Purchase of intangible and tangible assets 5,579 4,605 3,905 899 1,164 1,203 — — — — — — 6,478 5,769 5,108 of which capital expenditures 5,518 4,551 3,709 890 1,150 1,167 — — — — — — 6,408 5,701 4,876 of which increases in finance leasing contracts 61 54 196 9 14 36 — — — — — — 70 68 232
Summary of Headcount by Operating Segment	HEADCOUNT BY OPERATING SEGMENT Domestic Brazil Other operations Consolidated Total As of As of As of As of As of As of As of As of (number of employees) Headcount 48,200 49,851 9,658 9,508 43 70 57,901 59,429
Assets and Liabilities by Operating Segment	ASSETS AND LIABILITIES BY OPERATING SEGMENT Domestic Brazil Other operations Adjustments and eliminations Consolidated Total As of As of As of As of As of As of As of As of As of As of (millions of euros) Non-current 48,056 48,850 6,037 6,769 3 3 (1 ) 1 54,095 55,623 Current operating assets 4,233 4,363 874 898 5 (2 ) (17 ) (10 ) 5,095 5,249 Total operating assets 52,289 53,213 6,911 7,667 8 1 (18 ) (9 ) 59,190 60,872 Investments accounted for using the equity method 16 17 — — — — — — 16 17 Discontinued operations /Non-current — — Unallocated assets 6,413 7,894 Total Assets 65,619 68,783 Total operating liabilities 10,732 9,829 1,885 1,855 48 58 (69 ) (26 ) 12,596 11,716 Liabilities directly associated with Discontinued operations/Non-current — — Unallocated liabilities 31,276 33,284 Equity 21,747 23,783 Total Equity and liabilities 65,619 68,783
Reporting by Geographical Area	b) Reporting by geographical area Revenues Non-current Breakdown by location of Breakdown by location of Breakdown by location of 2018 2017 2016 2018 2017 2016 As of As of (millions of euros) Italy (A) 14,711 15,015 14,635 13,839 14,064 13,657 47,795 48,591 Outside Italy (B) 4,229 4,813 4,390 5,101 5,764 5,368 6,300 7,032 Total (A+B) 18,940 19,828 19,025 18,940 19,828 19,025 54,095 55,623

Related Party Transactions an_2

Related Party Transactions and Direction and Coordination Activity (Tables)	12 Months Ended
	Dec. 31, 2018
Statement [LineItems]
Summary of Separate Consolidated Income Statement	The effects of the related party transactions on the Group separate consolidated income statements Separate consolidated income statement line items 2018 Total (a) Associates, Other (*) Pension Key Total % (millions of euros) Revenues 18,940 2 3 5 0.0 Acquisition of goods and services 8,186 5 157 162 2.0 Employee benefits expenses 3,105 — — 78 14 92 3.0 Finance income 1,056 — 8 8 0.8 Finance expenses 2,404 3 6 9 0.4 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Separated consolidated income statement line items 2017 Total (a) Associates, Other (*) Pension Key Total % (millions of euros) Revenues 19,828 3 115 118 0.6 Other income 523 4 4 8 1.5 Acquisition of goods and services 8,388 22 170 192 2.3 Employee benefits expenses 3,626 1 74 37 112 3.1 Finance income 1,808 45 45 2.5 Finance expenses 3,303 11 38 49 1.5 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Separate consolidated income statement line items 2016 Total (a) Associates, Other (*) Pension Key Total Transactions Total related % (millions of euros) Revenues 19,025 10 355 365 (23 ) 342 1.8 Other income 311 1 1 1 0.3 Acquisition of goods and services 7,793 21 231 252 (14 ) 238 3.1 Employee benefits expenses 3,106 2 83 36 121 121 3.9 Other operating expenses 1,083 1 1 1 0.1 Finance income 2,543 108 108 108 4.2 Finance expenses 3,450 114 114 114 3.3 Profit (loss) from Discontinued operations/Non-current 47 (1 ) 10 9 (*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.
Summary of Consolidated Statement of Financial Position	The effects of the related party transactions on the Group separate consolidated statements of financial position Consolidated statement of financial position line items at December 31, 2018 Total (a) Associates, Other (*) Pension Total % on line (millions of euros) Non-current (1,594 ) — Current financial assets (3,383 ) — Non-current 25,059 — Current financial liabilities 5,913 — Trade and miscellaneous receivables and other current assets 4,706 3 19 22 0.5 Miscellaneous payables and other non-current 3,297 1 1 0.0 Trade and miscellaneous payables and other current liabilities 6,901 3 46 24 73 1.1 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Consolidated statement of financial position line items at December 31, 2017 Related parties Total (a) Associates, Other (*) Pension Total % on line (millions of euros) Non-current (1,768 ) — Securities other than investments (current assets) (993 ) (15 ) (15 ) 1.5 Financial receivables and other current financial assets (437 ) (38 ) (38 ) 8.7 Cash and cash equivalents (3,575 ) — Current financial assets (5,005 ) (53 ) (53 ) 1.1 Non-current 28,108 100 100 0.4 Current financial liabilities 4,756 163 163 3.4 Trade and miscellaneous receivables and other current assets 4,959 3 33 36 0.7 Trade and miscellaneous payables and other current liabilities 7,520 3 33 24 60 0.8 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties.
Summary of Consolidated Statement of Cash Flows	The effects of the related party transactions on the Group consolidated statements of cash flows Consolidated statement of cash flows line items 2018 Total (a) Associates, Other (*) Pension Total (b) % on line (millions of euros) Purchase of intangible and tangible assets on an accrual basis 6,478 3 3 0.0 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Consolidated statement of cash flows line items 2017 Total (a) Associates, Other (*) Pension Total % on line (millions of euros) Purchase of intangible and tangible assets on an accrual basis 5,769 135 135 2.3 (*) Vivendi group and Companies belonging to the group that it belongs to; other related parties through directors, statutory auditors and key managers (or executive officers under US rules) are considered related parties. Consolidated statement of cash flows line items 2016 Total (a) Associates, Other (*) Pension Total Transactions Total related % on line (millions of euros) Purchase of intangible and tangible assets on an accrual basis 5,108 159 — 159 159 3.1 (*) Other related parties both through directors, statutory auditors and key managers (or executive officers under US rules) and as participants in shareholders’ agreements pursuant to Article 122 of the Consolidated Law on Finance. According to Italian Rules, statutory auditors are considered related parties.
Summary of Employee Benefits Expenses	Separate consolidated income statements line items 2018 2017 2016 Type of contract (millions of euros) Employee benefits expenses Contributions to pension funds Fontedir 8 10 11 Telemaco 66 67 69 Other pension funds 4 (3 ) 3 Total employee benefits expenses 78 74 83 Consolidated statement of financial position line items As of As of Type of contract (millions of euros) Trade and miscellaneous payables and other current liabilities Payables for contributions to pension funds Fontedir 3 3 Telemaco 21 21 Total trade and miscellaneous payables and other current liabilities 24 24
Summary of Remuneration to Key Managers	In 2018, the total remuneration recorded on an accrual basis by TIM or by Group subsidiaries in respect of key managers amounted to 14.0 million euros (37.0 million euros in 2017). The figure breaks down as follows: 2018 2017 2016 (millions of euros) Short-term remuneration 6.8 (1) 10.4 (4) 13.1 (1) Long-term remuneration 0.5 0.1 (5) 1.9 Employment termination benefit incentives 5.6 (2) 25.5 12.0 (7) Share-based payments(*) 1.0 (3) 1.0 (6) 9.1 (3) 14.0 37.0 36.1 (*) These refer to the fair value of the rights, accrued to December 31, under the share-based incentive plans of TIM S.p.A. and its subsidiaries (Long Term Incentive 2018 and Plans of the subsidiaries). (1) of which 1.1 million euros recorded by the subsidiaries; (2) of which 2.4 million euros recorded by the subsidiaries; (3) of which 0.2 million euros recorded by the subsidiaries; (4) of which 1.6 million euros recorded by the subsidiaries; (5) of which 0.1 million euros recorded by the subsidiaries; (6) of which 1.0 million euros recorded by the subsidiaries. (7) of which 0.6 million euros recorded by the subsidiaries.
Other related parties [member]
Statement [LineItems]
Summary of Separate Consolidated Income Statement	The most significant amounts are summarized as follows: Separate consolidated income statement line items 2018 2017 2016 Type of contract (millions of euros) Revenues Other Directors or through 1 Fixed-line and mobile voice services and devices. Mediobanca group 1 4 7 Telephone services, sale of equipment, data network services and Internet accesses. Former Telco Companies 110 348 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Other minor companies 1 1 — Total revenues 3 115 355 Interconnection services, roaming, broadband access fees, supply of “IRU” transmission capacity and software Other income — 4 1 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Acquisition of goods and services Havas group 146 91 — Purchase of media space on behalf of the TIM Group and, to a lesser extent, development and delivery of advertising campaigns. Mediobanca group — 1 1 Credit recovery activities. Vivendi group 9 9 8 Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames). Former Telco Companies 69 221 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Other Directors or through 2 — 1 Amounts recognized for telephone services to be paid back. Total acquisition of goods and services 157 170 231 Employee benefits expenses — 1 2 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Other operating expenses — — 1 Expenses for penalties and contractual breaches towards the Intesa Sanpaolo group Finance income Mediobanca group 8 15 18 Bank accounts, deposits and hedging derivatives. Former Telco Companies 30 90 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Total finance income 8 45 108 Finance expenses Mediobanca group 6 15 26 Term Loan Facility and Revolving Credit Facility and hedging derivatives. Former Telco Companies 23 88 See the Note “Related party transactions” in the TIM Group Consolidated Financial Statements at December 31, 2017. Total finance expenses 6 3 114
Summary of Consolidated Statement of Financial Position	Consolidated statement of financial position line items As of As of Type of contract (millions of euros) Securities other than investments (current assets) 15 Bonds issued by Mediobanca. Financial receivables and other current financial assets 38 Hedging derivatives, loans, financing and finance leases made with Mediobanca. Non-current 100 Hedging derivatives, loans, financing and finance leases made with Mediobanca. Current financial liabilities 163 Hedging derivatives and loans made with Mediobanca. Consolidated statement of financial position line items As of As of Type of contract Trade and miscellaneous receivables and other current assets Other Directos or through 1 3 Fixed-line and mobile voice services and devices. Havas group 17 29 Purchase of media space on behalf of the TIM Group and, to a lesser extent, development and delivery of advertising campaigns. Vivendi Group 1 TIM Show 2018 service and TV series rights. Other minor companies 1 Total trade and miscellaneous receivables and other current assets 19 33 Miscellaneous payables and other non-current 1 Deferred income for IRU sale to the Vivendi group. Trade and miscellaneous payables and oher current liabilities Havas group 44 30 Purchase of media space on behalf of the TIM Group and, to a lesser extent, study and implementation of advertising campaigns Mediobanca group 1 Credit recovery activities. Vivendi group 2 2 Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames). Total trade and miscellaneous payables and other current liabilities 46 33
Entities with joint control or significant influence over entity [member]
Statement [LineItems]
Summary of Separate Consolidated Income Statement	Separate consolidated income statement line items 2018 2017 2016 Type of contract (millions of euros) Revenues Asscom S.r.l. 1 1 1 Insurance brokerage Italtel group 1 7 Provision of equipment rental, fixed and mobile telephone and outsourced communication services NordCom S.p.A. 1 1 1 Fixed and mobile voice services, equipment, data network connections and outsourced Other minor companies — — 1 Total revenues 2 3 10 Other income — 4 Contributionsgoverned by partnership agreements and penalties with respect to the Italtel group. Acquisition of goods and services Italtel group 17 16 Supply and maintenance of switching equipment, software development and platforms upgrading, and customized products and services, as part of TIM offerings to the Italtel group customers, and extension of professional services for the new Multimedia Video Data Center for the provision of the TIM Vision service NordCom S.p.A. — — 1 Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing W.A.Y. S.r.l. 4 4 4 Supply, installation and assistance services for geolocation equipment provided as part of offers to TIM customers and development and integration services provided under the Consip agreement. Other minor companies 1 1 Total acquisition of goods and services 5 22 21 Finance expenses 3 11 — Write-down of the financial receivable due from Alfiere.
Summary of Consolidated Statement of Financial Position	Consolidated statement of financial position line items As of As of Type of contract (millions of euros) Trade and miscellaneous receivables and other current assets Alfiere S.p.A. 1 1 Contracts for project management, administration, corporate and compliance services, and sundry chargebacks. W.A.Y. S.r.l. 1 1 Supply of fixed-line and mobile services Other minor companies 1 1 Total trade and miscellaneous receivables and other current assets 3 3 Trade and miscellaneous payables and other current liabilities Movenda S.p.A. 1 1 Supply and certification of SIM-cards, W.A.Y. S.r.l. 1 1 Supply, installation and assistance services for geolocation equipment provided as part of offers to TIM customers and development and integration services provided under the Consip agreement. Other minor companies 1 1 Total trade and miscellaneous payables and other current liabilities 3 3
Summary of Consolidated Statement of Cash Flows	Consolidated statement of cash flows line items 2018 2017 2016 Type of contract (millions of euros) Purchase of intangible and tangible assets on an accrual basis Italtel group 132 157 Purchases of telecommunications equipment Movenda S.p.A. 2 2 2 Information technology services and licenses for Mobile Connect Cardlets Other minor companies 1 1 Total purchase of intangible and tangible assets on an accrual basis 3 135 159

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Fair Value Measurement of the Granted Options and Rights	Parameters used to determine fair value—Tim Participações S.A. Plan/parameter Exercise Nominal Volatility Period Expected Risk-free Stock Option Plan 2011 8.84 51.73% 6 years — 11.94% per annum Stock Option Plan 2012 8.96 50.46% 6 years — 8.89% per annum Stock Option Plan 2013 8.13 48.45% 6 years — 10.66% per annum Stock Option Plan 2014 13.42 44.60% 6 years — 10.66% per annum Stock Option Plan 2015 8.45 35.50% 6 years — 16.10% per annum Stock Option Plan 2016 8.1 36.70% 6 years — 11.73 per annum 2018-2020 Plan 14.41 3 years — n.a. Parameters used to determine fair value—INWIT S.p.A. Plans/Parameters Exercise Nominal (1) Volatility Period Expected Interest rate INWIT LTI 2018-2020 0 6.208 n.a. 3 years 0.19 -0.1 annual (1) Arithmetic mean of the official prices of the INWIT S.p.A. ordinary shares recognized on the Electronic Stock Exchange organized and managed by Borsa Italiana S.p.A. over the 30 calendar days prior to the date of the Board of Directors meeting held November 6, 2018 (October 6, 2018—November 5, 2018).

Other Information (Tables)

Other Information (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of Exchange Rates Used to Translate the Financial Statements of Foreign Operations	a) Exchange rates used to translate the financial statements of foreign operations (*) Year-end Average exchange rates for the year (Local Currency against 12/31/2018 12/31/2017 12/31/2016 Year 2018 Year 2017 Year 2016 Europe BGN Bulgarian Lev 1.95580 1.95580 1.95580 1.95580 1.95580 1.95580 CZK Czech Koruna 25.72400 25.53500 27.02100 25.64653 26.32658 27.03443 CHF Swiss Franc 1.12690 1.17020 1.07390 1.15517 1.11171 1.09004 TRY Turkish Lira 6.05880 4.54640 3.70720 5.69649 4.12109 3.34284 GBP Pound Sterling 0.89453 0.88723 0.85618 8.88474 0.87640 0.81905 RON Romanian Leu 4.66350 4.65850 4.53900 4.65441 4.56884 4.49053 RUB Russian Ruble 79.71500 69.39200 64.30000 74.03808 65.90160 74.15831 North America USD U.S. Dollar 1.14500 1.19930 1.05410 1.18121 1.12946 1.10666 Latin America VEF Venezuelan Bolivar -Fuerte n.a. 16.19055 14.23035 n.a. 15.18018 14.90133 VES Venezuelan Bolivar -Soberano 729.80267 n.a. n.a. (**)139.15438 n.a. n.a. BOB Bolivian 7.91200 8.28720 7.28383 8.16214 7.80453 7.64702 PEN Peruvian Nuevo Sol 3.86300 3.88540 3.54020 3.87979 3.68247 3.73505 ARS Argentinean Peso 43.15930 22.93100 16.74880 32.85850 18.73314 16.33204 CLP Chilean Peso 794.37000 737.29000 704.94500 756.93992 732.28973 748.49536 COP Colombian Peso 3,721.81000 3,580.19000 3,169.49000 3,488.43046 3,334.88410 3,376.68116 BRL Brazilian Real 4.43664 3.96728 3.43542 4.30628 3.60584 3.85935 Other countries ILS Israeli Shekel 4.26270 4.16350 4.04770 4.24360 4.06091 4.24812 (*) Source: data processed by the European Central Bank, Reuters and major Central Banks. (**) On August 20, 2018 the Venezuelan Central Bank introduced a new currency (Bolivar Soberano, VES) to replace the previous currency (Bolivar Fuerte, VEF). . The average 2018 exchange rate therefore relates to the period from August 20 to December 31, 2018.
Summary of Research and Development	b) Research and development Expenditures for research and development activities are represented by external costs, labor costs of dedicated staff and depreciation and amortization. Details are as follows: 2018 2017 2016 (millions of euros) Research and development costs expensed during the year 44 43 44 Development costs capitalized 1,168 1,949 1,704 Total research and development costs (expensed and capitalized) 1,212 1,992 1,748
Summary of the Amount of Lease Installments Receivables	At December 31, 2018 and 2017 the amount of lease installments receivables is as follows: At December 31, At December 31, (millions of euros) Within 1 year 89 124 From 2 to 5 years 244 238 Beyond 5 years 134 98 Total 467 460
Summary of the Amount of Lease Installments Receivable	At December 31, 2018 the amount of lease installments receivable is as follows: At December 31, At December 31, (millions of euros) Within 1 year 153 177 From 2 to 5 years 307 298 Beyond 5 years 35 60 Total 495 535
Summary of Public Funds	In relation to this, funds received by the TIM Group are shown in the following table: Distributing entity Intervention segment 2018 collections (millions of euros) Fondimpresa training 5 Fondirigenti training 1 Infratel construction of ultrabroadband infrastructure 106 Ministry of Economic Development construction of mobile network infrastructure 1 technological innovation projects 1 MIUR research and energy efficiency projects 1 Autonomous Province of Trento Eschooling project 1 Total 116

List of Companies of the Tim _2

List of Companies of the Tim Group (Tables)	12 Months Ended
	Dec. 31, 2018
Text block [abstract]
Summary of List of Companies of the Tim Group	The following is indicated for each company: name, head office, country and share capital in the original currency, in addition to the percentage holding of share capital, the percentage of voting rights in the ordinary shareholders’ meeting if different than the percentage holding of share capital, and which companies hold the investment. TIM Group Name Head Office Currency ShareCapital % % of Held by PARENT COMPANY TIM S.p.A. MILAN EUR 11,677,002,855 (ITALY) Subsidiaries consolidated line-by-line DOMESTIC BUSINESS UNIT 4G RETAIL S.r.l. MILAN EUR 2,402,241 100.0000 TIM S.p.A. (sale of fixed and mobile telecommunications products and services and all analog and digital broadcasting equipment) (ITALY) ADVANCED CARING CENTER S.r.l. ROME EUR 600,000 100.0000 TELECONTACT CENTER S.p.A. (telemarketing, market research and surveys activities and development) (ITALY) CD FIBER S.r.l. ROME EUR 50,000 100.0000 TIM S.p.A. (design, construction, maintenance and management of network infrastructure services and high-speed electronic communication systems) (ITALY) FLASH FIBER S.r.l. MILAN EUR 30,000 80.000 TIM S.p.A. (development, implementation, maintenance and supply of the fiber network in Italy) (ITALY) H.R. SERVICES S.r.l. L’AQUILA EUR 500,000 100.0000 TIM S.p.A. (personnel training and services) (ITALY) INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. MILAN EUR 600,000,000 60.0333 0,0370 60,0556 TIM S.p.A. INFRASTUTTURE WIRELESS (installation and operation of installations and infrastructure for the management and the sale of telecommunications services) (ITALY) MED-1 RAMAT GAN ILS 55,886,866 100.0000 TELECOM ITALIA SPARKLE (construction and management of submarine cable Lev1) (ISRAEL) NOVERCA S.r.l. ROME EUR 10,000 100.0000 TIM S.p.A. (development and provision of services in the TLC and multimedia sector in Italy and abroad) (ITALY) OLIVETTI S.p.A. IVREA EUR 10,000,000 100.0000 TIM S.p.A. (production and sale of office equipment and information technology services) (TURIN— OLIVETTI SCUOLA (on-line TURIN (ITALY) EUR 100,000 100.0000 OLIVETTI S.p.A. PERSIDERA S.p.A. ROME EUR 21,428,572 70.0000 TIM S.p.A. (purchase, sale and (ITALY) TELECOM ITALIA SAN MARINO S.p.A. BORGO MAGGIORE EUR 1,808,000 100.0000 TIM S.p.A. (San Marino telecommunications management) (REPUBLIC OF TELECOM ITALIA SPARKLE S.p.A. ROME EUR 200,000,000 100.0000 TIM S.p.A. (completion and management of telecommunications services for public and private use) (ITALY) TELECOM ITALIA TRUST TECHNOLOGIES S.r.l. POMEZIA EUR 7,000,000 100.0000 TIM S.p.A. (other operations related to non-classified (ROME – TELECOM ITALIA VENTURES S.r.l. MILAN EUR 10,000 100.0000 TIM S.p.A. (investment holding company) (ITALY) TELECONTACT CENTER S.p.A. NAPLES EUR 3,000,000 100.0000 TIM S.p.A. (telemarketing services) (ITALY) TELEFONIA MOBILE SAMMARINESE S.p.A. BORGO EUR 78,000 51.0000 TELECOM ITALIA SAN (development and management of mobile telecommunications plants and services) (REPUBLIC OF TELENERGIA S.r.l. ROME EUR 50,000 100.0000 TIM S.p.A. (import, export, purchase, sale and trade of electricity) (ITALY) TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A. TURIN EUR 390,000 100.0000 TIM S.p.A. (production and sale of equipment and systems for crypto telecommunications) (ITALY) TI SPARKLE AMERICAS Inc. MIAMI USD 10,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (USA) TI SPARKLE ARGENTINA S.A. BUENOS ARS 9,998,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (ARGENTINA) TI SPARKLE AUSTRIA GmbH VIENNA EUR 2,735,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (AUSTRIA) TI SPARKLE BELGIUM S.P.R.L.—B.V.B.A BRUSSELS EUR 2,200,000 99.9999 TELECOM ITALIA SPARKLE (telecommunications services) (BELGIUM) 0.0001 TI SPARKLE UK Ltd TI SPARKLE BOLIVIA SRL LA PAZ BOB 1,747,600 99.9999 TELECOM ITALIA SPARKLE (managed bandwidth services) (BOLIVIA) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE BRASIL PARTICIPACOES Ltda RIO DE BRL 71,563,866 99.9999 TELECOM ITALIA SPARKLE (investment holding company) (BRAZIL) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE BRASIL TELECOMUNICACIONES Ltda RIO DE BRL 69,337,363 99.9999 TI SPARKLE BRASIL (managed bandwidth services) (BRAZIL) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE BULGARIA EOOD SOFIA BGN 100,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (BULGARIA) TI SPARKLE CHILE S.p.A. SANTIAGO CLP 5,852,430,960 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (CHILE) TI SPARKLE COLOMBIA Ltda BOGOTA’ COP 5,246,906,000 99.9999 TELECOM ITALIA SPARKLE (managed bandwidth services) (COLOMBIA) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE CZECH S.R.O. PRAGUE CZK 6,720,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (CZECH TI SPARKLE FRANCE S.A.S. PARIS EUR 18,295,000 100.0000 TELECOM ITALIA SPARKLE (installation and management of telecommunications services for fixed network and related activities) (FRANCE) TI SPARKLE GERMANY GmbH FRANKFURT EUR 25,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (GERMANY) TI SPARKLE GREECE S.A. ATHENS EUR 368,760 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (GREECE) TI SPARKLE ISRAEL Ltd RAMAT GAN ILS 1,000 100.0000 TELECOM ITALIA SPARKLE (international wholesale telecommunication services) (ISRAEL) TI SPARKLE NETHERLANDS B.V. AMSTERDAM EUR 18,200 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (NETHERLANDS) TI SPARKLE NORTH AMERICA. INC. NEW YORK USD 15,550,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications and promotional services) (USA) TI SPARKLE PANAMA S.A. PANAMA USD 10,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) TI SPARKLE PERU’ S.A. LIMA PEN 57,101,788 99.9999 TELECOM ITALIA SPARKLE (managed bandwidth services) (PERÙ) 0.0001 TI SPARKLE AMERICAS Inc. TI SPARKLE PUERTO RICO LLC SAN JUAN USD 50,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (PUERTO RICO) TI SPARKLE ROMANIA S.R.L. BUCHAREST RON 3,021,560 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (ROMANIA) TI SPARKLE RUSSIA LLC MOSCOW RUB 8,520,000 99.0000 TELECOM ITALIA SPARKLE (telecommunications services) (RUSSIA) 1.0000 TI SPARKLE UK Ltd TI SPARKLE SINGAPORE PTE. Ltd SINGAPORE USD 5,121,120 99.9999 TELECOM ITALIA SPARKLE (telecommunications services) 0.0001 TI SPARKLE NORTH TI SPARKLE SLOVAKIA S.R.O. BRATISLAVA EUR 300,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (SLOVAKIA) TI SPARKLE SPAIN TELECOMMUNICATIONS SL MADRID EUR 1,687,124 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (SPAIN) TI SPARKLE St. Croix LLC VIRGIN ISLANDS USD 10,000 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth services) (USA) TI SPARKLE SWITZERLAND GmbH ZURICH CHF 2,000,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (SWITZERLAND) TI SPARKLE TURKEY TELEKOMÜNIKASYON ANONIM SIRKETI YENISBONA TRY 65,000,000 100.0000 TELECOM ITALIA SPARKLE (telecommunications services) (ISTANBUL- TI SPARKLE UK Ltd LONDON EUR 3,983,254 100.0000 TELECOM ITALIA SPARKLE (value-added and networking services) (UK) TI SPARKLE VENEZUELA C.A. CARACAS VES 10 100.0000 TELECOM ITALIA SPARKLE (managed bandwidth service) (VENEZUELA) TIMB2 S.r.l. ROME EUR 10,000 99.0000 PERSIDERA S.p.A. (management of television frequency user rights) (ITALY) 1.0000 TIM S.p.A. TIMVISION S.r.l. ROME EUR 50,000 100.0000 TIM S.p.A. (production, co-production, (ITALY) TN FIBER S.r.l. TRENTO EUR 55,918,000 100.0000 TIM S.p.A. (design, construction, maintenance and supply of optical network access to users in the province of Trento) (ITALY) BRAZIL BUSINESS UNIT TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A. RIO DEJANEIRO BRL 7,169,029,859 99.9999 TELECOM ITALIA FINANCE (investment holding company) (BRAZIL) 0.0001 TIM S.p.A. TIM PARTICIPAÇÕES S.A. RIO DEJANEIRO BRL 9,913,414,422 66.5819 66,6035 TIM BRASIL SERVIÇOS E (investment holding company) (BRAZIL) 0.0324 TIM PARTICIPAÇÕES S.A. TIM S.A. RIO DE BRL 13,476,717,765 100.0000 TIM PARTICIPAÇÕES S.A. (telecommunications services) (BRAZIL) OTHER OPERATIONS OLIVETTI DEUTSCHLAND GmbH NURNBERG EUR 25,600,000 100.0000 OLIVETTI S.p.A. (sale of office equipment and supplies) (GERMANY) OLIVETTI UK Ltd NORTHAMPTON GBP 6,295,712 100.0000 OLIVETTI S.p.A. (sale of office equipment and supplies) (UK) TELECOM ITALIA CAPITAL S.A. LUXEMBOURG EUR 2,336,000 100.0000 TIM S.p.A. (financial company) (LUXEMBOURG) TELECOM ITALIA FINANCE S.A. LUXEMBOURG EUR 1,818,691,979 100.0000 TIM S.p.A. (financial company) (LUXEMBOURG) TELECOM ITALIA LATAM PARTICIPACOES E GESTAO ADMINISTRATIVA Ltda SAO PAULO BRL 118,925,803 100.0000 TIM S.p.A. (provision of telecommunications and representation services) (BRAZIL) TIAUDIT COMPLIANCE LATAM S.A. (IN LIQUIDATION) RIO DE BRL 1,500,000 69.9996 TIM S.p.A. (internal auditing services) (BRAZIL) 30.0004 TIM BRASIL SERVICOS E TIESSE S.c.p.A. IVREA EUR 103,292 61.0000 OLIVETTI S.p.A. (installation and assistance for electronic, IT, telematics and telecommunications equipment) (TURIN-ITALY) TIM TANK S.r.l. MILAN EUR 18,600,000 100.0000 TIM S.p.A. (fund and securities investments) (ITALY) Associates and joint ventures accounted for using the equity method ALFIERE S.p.A. (*) ROME EUR 9,250,000 50.0000 TIM S.p.A. (real estate management) (ITALY) AREE URBANE S.r.l. (IN LIQUIDATION) MILAN EUR 100,000 32.6200 TIM S.p.A. (real estate management) (ITALY) ASSCOM INSURANCE BROKERS S.r.l. MILAN EUR 100,000 20.0000 TIM S.p.A. (insurance brokerage) (ITALY) CLOUDESIRE.COM S.r.l. PISA EUR 11,671 (** ) TELECOM ITALIA VENTURES (design, implementation and marketing of a marketplace platform for the sale of a software as-a-service (ITALY) CONSORZIO ANTENNA COLBUCCARO ASCOLI PICENO EUR 121,000 20.0000 PERSIDERA S.p.A. (installation, management and maintenance ofmetal pylons complete with workstations for device recovery) (ITALY) CONSORZIO ANTENNA MONTECONERO SIROLO EUR 51,100 22.2211 PERSIDERA S.p.A. (multimedia services) (ANCONA-ITALY) CONSORZIO E O (IN LIQUIDATION) ROME EUR 30,987 50.0000 TIM S.p.A. (training services) (ITALY) ECO4CLOUD S.r.l. RENDE EUR 19,532 (**) TELECOM ITALIA VENTURES (development, production and sale of innovative products or services with high technological value (COSENZA-ITALY) KOPJRA S.r.l. SCHIO EUR 16,207 22.8491 TELECOM ITALIA VENTURES (development , production and sale of innovative products or services with high-tech value) (VICENZA-ITALY) MOVENDA S.p.A. ROME EUR 133,333 24.9998 TELECOM ITALIA FINANCE (design, construction and diffusion of internet sites, products and computer media) (ITALY) NORDCOM S.p.A. MILAN EUR 5,000,000 42.0000 TIM S.p.A. (application service provider) (ITALY) OILPROJECT S.r.l. MILAN EUR 13,556 (**) TELECOM ITALIA VENTURES (research, development, marketing and patenting of all intellectual property related to technology, information technology and TLC) (ITALY) PEDIUS S.r.l. ROME EUR 181 (**) TELECOM ITALIA VENTURES (implementation of specialized telecommunications applications, telecommunications services over telephone connections, VoIP services) (ITALY) TIGLIO I S.r.l. MILAN EUR 5,255,704 47.8019 TIM S.p.A. (real estate management) (ITALY) TIGLIO II S.r.l. (IN LIQUIDATION) MILAN EUR 10,000 49.4700 TIM S.p.A. (real estate management) (ITALY) W.A.Y. S.r.l. TURIN EUR 136,383 39.9999 OLIVETTI S.p.A. (development and sale of geolocation products and systems for security and logistics) (ITALY) WIMAN S.r.l. MATTINATA EUR 22,233 (**) TELECOM ITALIA VENTURES (development, management and implementation of platforms for social-based Wi-Fi (FOGGIA-ITALY) Other significant investments CONSORZIO ANTENNA TOLENTINO RECANATI EUR 86,000 16.6674 PERSIDERA S.p.A. (installation, management and maintenance of pylons complete with workstation for device recovery) (MACERATA- CONSORZIO EMITTENTI RADIOTELEVISIVE BOLOGNA EUR 119,309 18.6600 PERSIDERA S.p.A. (broadcasting activities) (ITALY) CONSORZIO HEALTH INNOVATION HUB (IN LIQUIDATION) TRENTO EUR 48,000 12.5000 TIM S.p.A. (development of the market for systems and services for the sector social and health) (ITALY) DAHLIA TV S.p.A. (IN LIQUIDATION) ROME EUR 11,318,833 10.0800 TIM S.p.A. (pay-per-view (ITALY) FIN.PRIV. S.r.l. MILAN EUR 20,000 14.2900 TIM S.p.A. (financial company) (ITALY) IGOON. S.r.l. NAPLES EUR 16,498 14.2805 TELECOM ITALIA VENTURES (development of mobile platforms and applications able to provide user with innovative solutions for organizing and sharing all their digital content) (ITALY) INNAAS S.r.l. ROME EUR 108,700 15.2548 TELECOM ITALIA VENTURES (design, development and sale of high-tech software and hardware) (ITALY) ITALBIZ.COM Inc. DELAWARE USD 4,721 19.5000 TIM S.p.A. (internet services) (USA) MIX S.r.l. MILAN EUR 1,000,000 11.0937 TIM S.p.A. (internet service provider) (ITALY) (*) Joint Venture. (**) Associates over which TIM S.p.A., directly and indirectly, exercise significant influence pursuant to IAS 28 (Investments in Associates and Joint Ventures).

Form, Content and Other Gener_2

Form, Content and Other General Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Disclosure of information about consolidated structured entities [abstract]
Name of reporting entity	Telecom Italia S.p.A. (the “Parent”), also known in short as “TIM S.p.A.”, and its subsidiaries form the “TIM Group” or the “Group”.
Description of business	The Group is engaged principally in the communications sector and, particularly, the fixed and mobile national and international telecommunications sector.
Date of end of reporting period	Dec. 31, 2018
Description of functional currency	The TIM Group consolidated financial statements as at December 31, 2018 are expressed in euro.
Level of rounding used in financial statement	Rounded to the nearest million unless otherwise indicated.

Accounting Policies - Additiona

Accounting Policies - Additional Information (Detail) - EUR (€)	12 Months Ended
	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of significant accounting policies [line items]
Expected term of the contractual relationship with mobile business	3 years
Expected term of the contractual relationship with fixed business	7 years
Consolidated equity	€ 21,747,000,000	€ 23,695,000,000	€ 23,783,000,000	€ 23,553,000,000	€ 21,249,000,000
Bottom of range [member]
Disclosure of significant accounting policies [line items]
Voting rights hold in associates	20.00%
Revenues from services rendered invoiced and collected period	40 days
Revenue from sale collection installment period	48 months
Lease liability	€ 3,400,000,000
Top of range [member]
Disclosure of significant accounting policies [line items]
Revenues from services rendered invoiced and collected period	60 days
Revenue from sale bundle offerings collection installment period	24 months
Revenue from sale collection extension installment period	12 months
Lease liability	€ 3,900,000,000
Increase (decrease) due to changes in accounting policy required by IFRS 9 [member]
Disclosure of significant accounting policies [line items]
Consolidated equity		107,000,000
Increase (decrease) due to changes in accounting policy required by IFRS15 [member]
Disclosure of significant accounting policies [line items]
Consolidated equity		€ 19,000,000

Accounting Policies - Disclosur

Accounting Policies - Disclosure of impact of initial application of new standards or interpretations (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Intangible assets
Intangible assets with a finite useful life	€ 8,889	€ 7,082	€ 7,192	€ 6,951
Other non-current assets
Non-current financial assets	1,594	1,768	1,768
Miscellaneous receivables and other non-current assets	2,291	2,153	2,422
Deferred tax assets	1,136	1,020	993
CURRENT ASSETS
Trade and miscellaneous receivables and other current assets	4,706	4,854	4,959
Current financial assets	3,383	5,005	5,005
TOTAL ASSETS	65,619	68,326	68,783
Equity
Equity attributable to owners of the Parent	19,528	21,474	21,557
Non-controllinginterests	2,219	2,221	2,226
Total Equity	21,747	23,695	23,783	€ 23,553	€ 21,249
Non-current liabilities
Miscellaneous payables and other non-current liabilities	3,297	1,427	1,678
Deferred tax liabilities	192	262	265
CURRENT LIABILITIES
Trade and miscellaneous payables and other current liabilities	6,901	7,407	7,520
Current income tax payables	67	110	112
Total Equity and liabilities	€ 65,619	68,326	€ 68,783
Increase (decrease) due to application of IFRS 9 [member]
Other non-current assets
Deferred tax assets		27
CURRENT ASSETS
Trade and miscellaneous receivables and other current assets		(147)
TOTAL ASSETS		(120)
Equity
Equity attributable to owners of the Parent		(100)
Non-controllinginterests		(7)
Total Equity		(107)
Non-current liabilities
Deferred tax liabilities		(11)
CURRENT LIABILITIES
Current income tax payables		(2)
Total Equity and liabilities		(120)
IFRS 15 adjustments [member]
Intangible assets
Intangible assets with a finite useful life		(110)
Other non-current assets
Miscellaneous receivables and other non-current assets		(269)
CURRENT ASSETS
Trade and miscellaneous receivables and other current assets		42
TOTAL ASSETS		(337)
Equity
Equity attributable to owners of the Parent		17
Non-controllinginterests		2
Total Equity		19
Non-current liabilities
Miscellaneous payables and other non-current liabilities		(251)
Deferred tax liabilities		8
CURRENT LIABILITIES
Trade and miscellaneous payables and other current liabilities		(113)
Total Equity and liabilities		€ (337)

Accounting Policies - Schedule

Accounting Policies - Schedule of Breakdown of Impact of New Accounting Standards on Consolidated Financial Statements (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Dec. 31, 2015
Disclosure of impact of initial application of new standards or interpretations
Revenues	€ 18,940	€ 19,828	€ 19,025
Operating expenses	(11,878)
Depreciation and amortization	(4,255)	(4,473)	(4,291)
Operating profit (loss)	561	3,291	3,722
Other income (expenses) from investments	11	(18)	7
Finance income (expenses)	(1,348)	(1,495)	(907)
Profit (loss) before tax from continuing operations	(777)	1,777	2,799
Income tax expense	(375)	(490)	(880)
Profit (loss) for the year	(1,152)	1,287	1,966
Attributable to:
Owners of the Parent	(1,411)	1,121	1,808
Non-controlling interests	259	166	158
Non-current assets
Intangible assets	35,658	36,654
Tangible assets	16,146	16,547
Other non-current assets	5,086	5,251
Non-current assets	56,890	58,452
Current assets	8,729	10,331
Total Assets	65,619	68,783		€ 68,326
Equity
Equity attributable to owners of the Parent	19,528	21,557		21,474
Non-controlling interests	2,219	2,226		2,221
Total Equity	21,747	23,783	€ 23,553	23,695	€ 21,249
Non-current liabilities	30,991	32,612
Current liabilities	12,881	12,388
Total Liabilities	43,872	45,000
Total Equity and liabilities	65,619	€ 68,783		€ 68,326
Comparable financial data prepared in accordance with previous accounting standards applied (IAS 39, IAS 18 and IAS 11) [member]
Disclosure of impact of initial application of new standards or interpretations
Revenues	19,109
Operating expenses	(11,737)
Depreciation and amortization	(4,399)
Operating profit (loss)	727
Other income (expenses) from investments	10
Finance income (expenses)	(1,341)
Profit (loss) before tax from continuing operations	(605)
Income tax expense	(433)
Profit (loss) for the year	(1,038)
Attributable to:
Owners of the Parent	(1,298)
Non-controlling interests	260
Non-current assets
Intangible assets	35,771
Tangible assets	16,146
Other non-current assets	5,368
Non-current assets	57,285
Current assets	8,794
Total Assets	66,079
Equity
Equity attributable to owners of the Parent	19,716
Non-controlling interests	2,225
Total Equity	21,941
Non-current liabilities	31,276
Current liabilities	12,862
Total Liabilities	44,138
Total Equity and liabilities	66,079
New accounting standards impact [member]
Disclosure of impact of initial application of new standards or interpretations
Revenues	(169)
Operating expenses	(141)
Depreciation and amortization	144
Operating profit (loss)	(166)
Other income (expenses) from investments	1
Finance income (expenses)	(7)
Profit (loss) before tax from continuing operations	(172)
Income tax expense	58
Profit (loss) for the year	(114)
Attributable to:
Owners of the Parent	(113)
Non-controlling interests	(1)
Non-current assets
Intangible assets	(113)
Other non-current assets	(282)
Non-current assets	(395)
Current assets	(65)
Total Assets	(460)
Equity
Equity attributable to owners of the Parent	(188)
Non-controlling interests	(6)
Total Equity	(194)
Non-current liabilities	(285)
Current liabilities	19
Total Liabilities	(266)
Total Equity and liabilities	€ (460)

Scope of Consolidation - Summar

Scope of Consolidation - Summary of Subsidiaries Entering/Exiting/ Merged into the Scope of Consolidation (Detail)	12 Months Ended
	Dec. 31, 2018
OLIVETTI ESPANA S.A. [member]
Disclosure Of Investments In Consolidated Subsidiaries [line items]
Company	OLIVETTI ESPAÑA S.A.
Subsidiaries continuing operations	Liquidated
Business Unit	Other Operations
Exit Month	2018-12
TI SPARKLE MED S.p.A. [member]
Disclosure Of Investments In Consolidated Subsidiaries [line items]
Company	TI SPARKLE MED S.p.A.
Subsidiaries continuing operations	Merged into TI Sparkle S.p.A.
Business Unit	Domestic
Merger Month	2018-04
TIM CELULAR SA [member]
Disclosure Of Investments In Consolidated Subsidiaries [line items]
Company	TIM CELULAR S.A.
Subsidiaries continuing operations	Merged into TIM S.A.
Business Unit	Brazil
Merger Month	2018-10

Scope of Consolidation - Summ_2

Scope of Consolidation - Summary of Breakdown by Number of Subsidiaries and Associates (Detail) - Companies	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	80	86
Associates accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	16	19
Joint ventures accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	1	1
Subsidiaries consolidated lne- by -line [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	63	66
Italy [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	38	42
Italy [member] | Associates accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	16	19
Italy [member] | Joint ventures accounted for using the equity method [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	1	1
Italy [member] | Subsidiaries consolidated lne- by -line [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	21	22
Outside Italy [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	42	44
Outside Italy [member] | Subsidiaries consolidated lne- by -line [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Companies	42	44

Scope of Consolidation - Additi

Scope of Consolidation - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Information about Consolidated Structured Entities [Line Items]
Positive or negative exchange rate effect	€ (63)	€ (155)	€ 302
Cash flow without exchange rate effect	€ (1,552)	(551)	€ 434
TIM Brasil group [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Proportion of ownership interests held by non-controlling interests	33.40%
Increase (decrease) in cash and cash equivalents	€ (512)	(744)
Positive or negative exchange rate effect	(67)	(146)
Cash flow without exchange rate effect	€ (445)	€ (598)
TIM Brasil group [member] | Tim Celular S.A. and Tim S.A. [member] | Business unit [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Proportion of share capital of operating companies	100.00%

Scope of Consolidation - Summ_3

Scope of Consolidation - Summary of Statement of Financial Position Data (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Information about Consolidated Structured Entities [Line Items]
Non-current assets	€ 56,890		€ 58,452
Current assets	8,729		10,331
Total Assets	65,619	€ 68,326	68,783
Non-current liabilities	30,991		32,612
Current liabilities	12,881		12,388
Total Liabilities	43,872		45,000
Equity	21,747	23,695	23,783	€ 23,553	€ 21,249
Non-controlling interests	2,219	€ 2,221	2,226
TIM Brasil group [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Non-current assets	6,257		6,819
Current assets	1,387		1,929
Total Assets	7,644		8,748
Non-current liabilities	959		1,703
Current liabilities	1,678		1,852
Total Liabilities	2,637		3,555
Equity	5,007		5,193
Non-controlling interests	€ 1,518		€ 1,556

Scope of Consolidation - Summ_4

Scope of Consolidation - Summary of Income Statement Data (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Information about Consolidated Structured Entities [Line Items]
Revenues	€ 18,940	€ 19,828	€ 19,025
Profit (loss) for the year	(1,152)	1,287	1,919
of which, Non-controlling interests	259	166	158
TIM Brasil group [member]
Disclosure of Information about Consolidated Structured Entities [Line Items]
Revenues	3,943	4,502	4,047
Profit (loss) for the year	586	340	194
of which, Non-controlling interests	€ 200	€ 114	€ 65

Business Combinations - Additio

Business Combinations - Additional information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about business combination [abstract]
Business combination transactions during period	€ 0	€ 0	€ 0

Goodwill - Summary of Breakdown

Goodwill - Summary of Breakdown and Changes in Goodwill (Detail) - EUR (€) € in Millions	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance		€ 29,462
Decrease		(2,693)
Impairments	€ 2,000	2,590
Ending balance		26,769	€ 29,462
Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance		29,462	29,612
Reclassification		0	0
Increase		0	0
Decrease		0	0
Impairments		(2,590)
Exchange differences		(103)	(150)
Ending balance		26,769	29,462
Core domestic [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance		28,077	28,077
Reclassification		0	0
Increase		0	0
Decrease		0	0
Impairments		(2,450)
Ending balance		25,627	28,077
International wholesale [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance		412	412
Reclassification		0	0
Increase		0	0
Decrease		0	0
Impairments		(140)
Ending balance		272	412
Domestic [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance		28,489	28,489
Reclassification		0	0
Increase		0	0
Decrease		0	0
Impairments		(2,590)
Ending balance		25,899	28,489
Brazil [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Beginning balance		973	1,123
Reclassification		0	0
Increase		0	0
Decrease		0	0
Exchange differences		(103)	(150)
Ending balance		870	973
Other operations [member] | Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Reclassification		0	0
Increase		0	0
Decrease		€ 0	€ 0

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) € in Millions, R$ in Millions	Sep. 30, 2018EUR (€)	Dec. 31, 2018EUR (€)	Dec. 31, 2018BRL (R$)	Dec. 31, 2017EUR (€)
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Decrease in goodwill		€ 2,693
Carrying value of goodwill		26,769		€ 29,462
Impairment loss on goodwill	€ 2,000	2,590
CGU [member] | Gross carrying amount [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Carrying value of goodwill | R$			R$ 3854
Core domestic CGU [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Impairment loss on goodwill		2,450
Additional Impairment loss on goodwill		450
Core domestic CGU [member] | Technological infrastructure [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Impairment loss on goodwill		2,450
International wholesale CGU [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Impairment loss on goodwill		140
International wholesale CGU [member] | Technological infrastructure [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Impairment loss on goodwill		140
Brazil CGU [member] | Technological infrastructure [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Impairment loss on goodwill		€ 1,200
Sensitivity analyzes percentage		(25.00%)

Goodwill - Summary of Gross Car

Goodwill - Summary of Gross Carrying Amounts, Accumulated Impairment Losses (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	€ 26,769	€ 29,462
Operating segments [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	26,769	29,462
Operating segments [member] | Core domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	25,627	28,077
Operating segments [member] | International wholesale [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	272	412
Operating segments [member] | Gross carrying amount [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	43,534	43,661
Operating segments [member] | Gross carrying amount [member] | Core domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	42,045	42,045
Operating segments [member] | Gross carrying amount [member] | International wholesale [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	412	412
Operating segments [member] | Accumulated impairment losses [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	(16,765)	(14,199)
Operating segments [member] | Accumulated impairment losses [member] | Core domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	(16,418)	(13,968)
Operating segments [member] | Accumulated impairment losses [member] | International wholesale [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	(140)
Operating segments [member] | Domestic [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	25,899	28,489
Operating segments [member] | Domestic [member] | Gross carrying amount [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	42,457	42,457
Operating segments [member] | Domestic [member] | Accumulated impairment losses [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	(16,558)	(13,968)
Operating segments [member] | Brazil [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	870	973
Operating segments [member] | Brazil [member] | Gross carrying amount [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	1,077	1,204
Operating segments [member] | Brazil [member] | Accumulated impairment losses [member]
Disclosure of Reconciliation of Changes in Goodwill [Line Items]
Goodwill	€ (207)	€ (231)

Goodwill - Summary of Principal

Goodwill - Summary of Principal Parameters for Estimates of Value in Use (Detail) - Core domestic [member]	Dec. 31, 2018
Disclosure of Information for Cash-generating Units [Line Items]
WACC	6.60%
WACC before tax	8.91%
Growth rate beyond the explicit period (g)	0.50%
Capitalization rate net of tax (WACC -g )	6.10%
Capitalization rate before taxes (WACC -g )	8.41%
Capex/Revenues, % perpetual	20.15%

Goodwill - Summary of Differenc

Goodwill - Summary of Differences Between Recoverable Amounts and Net Carrying Amounts (Detail) € in Millions	Dec. 31, 2018EUR (€)
Core domestic [member]
Disclosure of Information for Cash-generating Units [Line Items]
Difference between recoverable amounts and net carrying amounts	€ (2,450)
International wholesale [member]
Disclosure of Information for Cash-generating Units [Line Items]
Difference between recoverable amounts and net carrying amounts	(140)
Brazil [member]
Disclosure of Information for Cash-generating Units [Line Items]
Difference between recoverable amounts and net carrying amounts	€ 1,246

Intangible Assets with a Fini_3

Intangible Assets with a Finite Useful Life - Additional Information (Detail) € in Millions, R$ in Billions	12 Months Ended
	Dec. 31, 2018EUR (€)Right	Dec. 31, 2018BRL (R$)Right	Dec. 31, 2017EUR (€)	Jan. 01, 2018EUR (€)	Dec. 31, 2016EUR (€)
Disclosure of Detailed Information about Intangible Assets [Line Items]
Increase (decrease) through transfers and other changes, intangible assets other than goodwill	€ 1,355		€ 1,697
Additions to intangible assets	3,647		2,292
Amount of intangible assets	8,889		7,192	€ 7,082	€ 6,951
Capitalized finance expense	37		73
Impairment loss of intangible assets	4
Italy [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	2,399
Gross carrying amount [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	22,438		21,977
Internally generated [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Additions to intangible assets	248		272
Tim Brasil group [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
User rights acquisition amount	1,000	R$ 2.9
User rights reclassified under concessions, licenses, trademarks and similar rights	261
Capitalized finance expense	€ 37
Capitalized finance expense percentage	8.37%	8.37%
Concessions, licenses, trademarks and similar rights [member] | Core domestic [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of telephone licenses and similar rights	€ 2,655
Cost of TV frequencies licenses	€ 104
Licenses for the frequencies used for digital terrestrial transmission expiry year	2032	2032
Concessions, licenses, trademarks and similar rights [member] | Brazil business unit [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of telephone licenses and similar rights	€ 615
Concessions, licenses, trademarks and similar rights [member] | TIM S.p.A [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of telephone licenses and similar rights	2,040
Increase in cost of telephone licenses and similar rights	502
Cost of indefeasible rights of use	110
Concessions, licenses, trademarks and similar rights [member] | Telecom Italia Sparkle Group [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of indefeasible rights of use	412
Concessions, licenses, trademarks and similar rights [member] | International wholesale [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Cost of indefeasible rights of use	270
Concessions, licenses, trademarks and similar rights [member] | Brazil business unit [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	32
Software systems [member] | Gross carrying amount [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	2,195
Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Additions to intangible assets	703		771
Amount of intangible assets	€ 2,095		2,193		2,458
Industrial patents and intellectual property rights [member] | Bottom of range [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amortization period of intangible asset	2 years	2 years
Industrial patents and intellectual property rights [member] | Top of range [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amortization period of intangible asset	5 years	5 years
Industrial patents and intellectual property rights [member] | Gross carrying amount [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	€ 10,832		12,266
Industrial patents and intellectual property rights [member] | Brazil business unit [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	794
Industrial patents and intellectual property rights [member] | TIM S.p.A [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	1,256
Capitalized subscription acquisition costs [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Subscriber acquisition costs			110
Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Additions to intangible assets	2,830		1,224
Amount of intangible assets	3,500		2,115		€ 1,530
Capitalized finance expense	37		73
Work in progress and advance payments [member] | Gross carrying amount [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	3,526		2,145
Work in progress and advance payments [member] | TIM S.p.A [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Advance payments			€ 630
5G mobile telecommunications services [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Amount of intangible assets	2,399
Discount of intangible assets	€ 8
Number of annual installments | Right	6	6
Amount of annual installments	€ 477

Intangible Assets with a Fini_4

Intangible Assets with a Finite Useful Life - Summary of Breakdown and Movements in Intangible Assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	€ 7,192	€ 6,951
Adoption IFRS 15	(110)
Addition	3,647	2,292
Amortization	(1,599)	(1,793)
Impairment losses / reversals	4	(30)
Disposals	(1)
Exchange differences	(251)	(391)
Capitalized borrowing costs	37	73
Other changes	(30)	90
Ending balance	8,889	7,192
Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	2,193	2,458
Addition	703	771
Amortization	(1,171)	(1,263)
Exchange differences	(98)	(147)
Other changes	468	374
Ending balance	2,095	2,193
Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	2,750	2,854
Addition	103	140
Amortization	(422)	(396)
Exchange differences	(64)	(96)
Other changes	894	248
Ending balance	3,261	2,750
Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	134	109
Adoption IFRS 15	(110)
Addition	11	157
Amortization	(6)	(134)
Exchange differences	(1)	(5)
Other changes	5	7
Ending balance	33	134
Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Beginning balance	2,115	1,530
Addition	2,830	1,224
Impairment losses / reversals	4	(30)
Disposals	(1)
Exchange differences	(88)	(143)
Capitalized borrowing costs	37	73
Other changes	(1,397)	(539)
Ending balance	€ 3,500	€ 2,115

Intangible Assets with a Fini_5

Intangible Assets with a Finite Useful Life - Summary of Rresidual Amount of Telephone Licenses and Similar Rights and Their Useful Lives (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018	Dec. 31, 2016
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 8,889	€ 7,192	€ 7,082	€ 6,951
Amortization expense for 2018	1,599	€ 1,793
TIM S.p.A [member] | UMTS [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 403
Useful life (years0	18
Maturity date	12/31/2021
Amortization expense for 2018	€ 134
TIM S.p.A [member] | UMTS 2100 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 22
Useful life (years0	12
Maturity date	12/31/2021
Amortization expense for 2018	€ 7
TIM S.p.A [member] | WiMax [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 4
Useful life (years0	15
Maturity date	05/31/2023
Amortization expense for 2018	€ 1
TIM S.p.A [member] | LTE 1800 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 94
Useful life (years0	18
Maturity date	12/31/2029
Amortization expense for 2018	€ 9
TIM S.p.A [member] | LTE 800 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 661
Useful life (years0	17
Maturity date	12/31/2029
Amortization expense for 2018	€ 60
TIM S.p.A [member] | LTE 2600 MHz [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 73
Useful life (years0	17
Maturity date	12/31/2029
Amortization expense for 2018	€ 7
TIM S.p.A [member] | 1452-1492 MHz band [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 181
Useful life (years0	14
Maturity date	12/31/2029
Amortization expense for 2018	€ 16
TIM S.p.A [member] | GSM (extension) [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Useful life (years0	3
Maturity date	06/30/2018
Amortization expense for 2018	€ 17
TIM S.p.A [member] | 900 and 1800 MHz band [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 602
Useful life (years0	12
Maturity date	12/31/2029
Amortization expense for 2018	€ 27
Tim Brasil group [member] | GSM and 3G (UMTS) [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 129
Useful life (years0	15
Maturity date	From 2023 to 2031
Amortization expense for 2018	€ 41
Tim Brasil group [member] | 4G (LTE - 700MHz) [member]
Disclosure of Reconciliation of Changes in Intangible Assets and Goodwill [Line Items]
Net carrying amount	€ 486
Useful life (years0	15
Maturity date	2030
Amortization expense for 2018	€ 36

Intangible Assets with a Fini_6

Intangible Assets with a Finite Useful Life - Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Amortization (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	€ 8,889	€ 7,082	€ 7,192	€ 6,951
Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	2,095		2,193	2,458
Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	3,261		2,750	2,854
Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	33		134	109
Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	3,500		2,115	€ 1,530
Gross carrying amount [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	22,438		21,977
Gross carrying amount [member] | Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	10,832		12,266
Gross carrying amount [member] | Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	7,839		7,044
Gross carrying amount [member] | Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	241		522
Gross carrying amount [member] | Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	3,526		2,145
Accumulated impairment losses [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(303)		(310)
Accumulated impairment losses [member] | Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life			(7)
Accumulated impairment losses [member] | Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(277)		(273)
Accumulated impairment losses [member] | Work in progress and advance payments [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(26)		(30)
Accumulated amortization [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(13,246)		(14,475)
Accumulated amortization [member] | Industrial patents and intellectual property rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(8,737)		(10,066)
Accumulated amortization [member] | Concessions, licenses, trademarks and similar rights [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	(4,301)		(4,021)
Accumulated amortization [member] | Other intangible assets [member]
Disclosure of Detailed Information about Intangible Assets [Line Items]
Intangible assets with a finite useful life	€ (208)		€ (388)

Tangible Assets (Owned and Un_3

Tangible Assets (Owned and Under Finance Leases) - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]
Increase (decrease) in assets held under finance lease		€ 35
Plant and equipment	€ 14,251	14,216	€ 13,947
Addition of property plant and equipment	2,688	3,258
Change in addition of property plant and equipment	(570)
Tangible asset, disposals	13	11
Net increase (decrease) other changes	55	(75)
Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	77,771	76,251
Tangible asset, disposals	431
Internally generated [member]
Disclosure of detailed information about property, plant and equipment [line items]
Addition of property plant and equipment	322	354
Brazil business unit [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	1,947
TIM S.p.A [member]
Disclosure of detailed information about property, plant and equipment [line items]
Land	209
Buildings	555
Plant and equipment	9,162
Motor vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Net increase (decrease) other changes		10
Higher tangible assets and related payables for financial leases	49
Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Increase (decrease) in assets held under finance lease	436
Plant and equipment	1,895	2,331	2,413
Addition of property plant and equipment	73	151
Increases in finance leasing contracts	70	68	232
Net increase (decrease) other changes	(337)	(77)
Reclassification to owned buildings under rationalization agreement	82
Inflation adjustment to finance lease payment	13	13
Assets held under finance lease [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	3,485	4,060
Assets held under finance lease [member] | TIM S.p.A [member]
Disclosure of detailed information about property, plant and equipment [line items]
Buildings	215
Plant and Equipment [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Tangible asset, disposals	288
TIM S.p.A. [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Increases in finance leasing contracts	58
Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Transaction cost	69
Financial disbursement during transaction cost	158
Plant and equipment	588	488	509
Addition of property plant and equipment	79	10
Net increase (decrease) other changes	59	11
Buildings (civil and industrial) [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	1,862	1,717
Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	1,365	1,768	€ 1,835
Addition of property plant and equipment	32	47
Increases in finance leasing contracts	12	2
Net increase (decrease) other changes	(288)	14
Reclassification to owned buildings under rationalization agreement	71
Buildings (civil and industrial) [member] | Assets held under finance lease [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Plant and equipment	2,792	€ 3,391
Leasehold improvements [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Reclassification to owned buildings under rationalization agreement	€ 11

Tangible Assets (Owned and Un_4

Tangible Assets (Owned and Under Finance Leases) - Summary of Changes in Property, Plant and Equipment and Assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	€ 14,216	€ 13,947
Addition	2,688	3,258
Depreciation	(2,441)	(2,500)
Impairment (losses) / reversals		(7)
Disposals	(13)	(11)
Exchange Differences	(254)	(396)
Other changes	55	(75)
Ending balance	14,251	14,216	€ 13,947
Land [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	213	203
Addition	6	6
Exchange Differences	(1)	(2)
Other changes	32	6
Ending balance	250	213	203
Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	488	509
Addition	79	10
Depreciation	(36)	(39)
Exchange Differences	(2)	(3)
Other changes	59	11
Ending balance	588	488	509
Plant and Equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	12,049	11,709
Addition	2,013	2,601
Depreciation	(2,229)	(2,286)
Impairment (losses) / reversals		(8)
Disposals	(7)	(8)
Exchange Differences	(217)	(332)
Other changes	487	373
Ending balance	12,096	12,049	11,709
Manufacturing and distribution equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	36	38
Addition	8	12
Depreciation	(14)	(16)
Other changes	1	2
Ending balance	31	36	38
Other [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	376	391
Addition	94	88
Depreciation	(162)	(159)
Disposals	(2)	(2)
Exchange Differences	(13)	(18)
Other changes	65	76
Ending balance	358	376	391
Construction in progress and advance payments [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	1,054	1,097
Addition	488	541
Impairment (losses) / reversals		1
Disposals	(4)	(1)
Exchange Differences	(21)	(41)
Other changes	(589)	(543)
Ending balance	928	1,054	1,097
Assets held under finance lease [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	2,331	2,413
Addition	73	151
Increases in finance leasing contracts	70	68	232
Depreciation	(215)	(180)
Exchange Differences	(27)	(44)
Other changes	(337)	(77)
Ending balance	1,895	2,331	2,413
Assets held under finance lease [member] | Land [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	16	16
Ending balance	16	16	16
Assets held under finance lease [member] | Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	1,768	1,835
Addition	32	47
Increases in finance leasing contracts	12	2
Depreciation	(159)	(130)
Other changes	(288)	14
Ending balance	1,365	1,768	1,835
Assets held under finance lease [member] | Plant and Equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	353	365
Addition	9	72
Increases in finance leasing contracts	6	14
Depreciation	(18)	(21)
Exchange Differences	(26)	(43)
Other changes	(22)	(34)
Ending balance	302	353	365
Assets held under finance lease [member] | Other [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	138	125
Increases in finance leasing contracts	52	52
Depreciation	(38)	(29)
Exchange Differences	(1)	(1)
Other changes	(3)	(9)
Ending balance	148	138	125
Assets held under finance lease [member] | Construction in progress and advance payments [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Beginning balance	56	72
Addition	32	32
Other changes	(24)	(48)
Ending balance	€ 64	€ 56	€ 72

Tangible Assets (Owned and Un_5

Tangible Assets (Owned and Under Finance Leases) - Summary of Depreciation on Straight-line Basis Over the Estimated Useful life of Assets (Detail)	12 Months Ended
	Dec. 31, 2018
Manufacturing and distribution equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Percentage of depreciation	20.00%
Bottom of range [member] | Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Percentage of depreciation	2.00%
Bottom of range [member] | Plant and Equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Percentage of depreciation	3.00%
Bottom of range [member] | Other [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Percentage of depreciation	10.00%
Top of range [member] | Buildings (civil and industrial) [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Percentage of depreciation	5.55%
Top of range [member] | Plant and Equipment [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Percentage of depreciation	50.00%
Top of range [member] | Other [member]
Reconciliation Of Changes In Property Plant And Equipment [line items]
Percentage of depreciation	50.00%

Tangible Assets (Owned and un_6

Tangible Assets (Owned and under Finance Leases) - Summary of Gross Carrying Amount, Accumulated Impairment Losses and Accumulated Depreciation (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	€ 14,251	€ 14,216	€ 13,947
Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	1,895	2,331	2,413
Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	250	213	203
Land [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	16	16	16
Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	588	488	509
Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	1,365	1,768	1,835
Plant and Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	12,096	12,049	11,709
Plant and Equipment [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	302	353	365
Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	31	36	38
Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	358	376	391
Other [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	148	138	125
Construction in progress and advance payments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	928	1,054	1,097
Construction in progress and advance payments [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	64	56	€ 72
Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	77,771	76,251
Gross carrying amount [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	3,485	4,060
Gross carrying amount [member] | Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	253	218
Gross carrying amount [member] | Land [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	16	16
Gross carrying amount [member] | Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	1,862	1,717
Gross carrying amount [member] | Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	2,792	3,391
Gross carrying amount [member] | Plant and Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	70,525	68,964
Gross carrying amount [member] | Plant and Equipment [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	370	397
Gross carrying amount [member] | Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	318	310
Gross carrying amount [member] | Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	3,885	3,988
Gross carrying amount [member] | Other [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	243	200
Gross carrying amount [member] | Construction in progress and advance payments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	928	1,054
Gross carrying amount [member] | Construction in progress and advance payments [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	64	56
Accumulated impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(68)	(70)
Accumulated impairment losses [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(13)	(27)
Accumulated impairment losses [member] | Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(3)	(5)
Accumulated impairment losses [member] | Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(13)	(27)
Accumulated impairment losses [member] | Plant and Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(62)	(62)
Accumulated impairment losses [member] | Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1)	(1)
Accumulated impairment losses [member] | Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(2)	(2)
Accumulated amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(63,452)	(61,965)
Accumulated amortization [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1,577)	(1,702)
Accumulated amortization [member] | Buildings (civil and industrial) [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1,274)	(1,229)
Accumulated amortization [member] | Buildings (civil and industrial) [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(1,414)	(1,596)
Accumulated amortization [member] | Plant and Equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(58,367)	(56,853)
Accumulated amortization [member] | Plant and Equipment [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(68)	(44)
Accumulated amortization [member] | Manufacturing and distribution equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(286)	(273)
Accumulated amortization [member] | Other [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	(3,525)	(3,610)
Accumulated amortization [member] | Other [member] | Assets held under finance lease [member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	€ (95)	€ (62)

Tangible Assets (Owned and un_7

Tangible Assets (Owned and under Finance Leases) - Finance Lease Payments due in Future Years and Present Value (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of finance lease by lessee [line items]
Financial receivables for lease contracts	€ (124)
Assets held under finance lease [member]
Disclosure of finance lease by lessee [line items]
Future net minimum lease payments	2,965	€ 4,180
Interest portion	(1,142)	(1,864)
Present value of lease payments	1,823	2,316
Financial lease liabilities	1,948	2,430
Financial receivables for lease contracts	(124)	(114)
Total net finance lease liabilities	1,823	2,316
Assets held under finance lease [member] | Within 1 year [member]
Disclosure of finance lease by lessee [line items]
Future net minimum lease payments	227	271
Present value of lease payments	210	234
Assets held under finance lease [member] | Later than one year and not later than five years [member]
Disclosure of finance lease by lessee [line items]
Future net minimum lease payments	993	1,031
Present value of lease payments	782	691
Assets held under finance lease [member] | Beyond 5 years [member]
Disclosure of finance lease by lessee [line items]
Future net minimum lease payments	1,745	2,878
Present value of lease payments	€ 831	€ 1,391

Investments - Summary of Invest

Investments - Summary of Investments in Associates and Joint Ventures Accounted for Using Equity Method (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Others	€ 16	€ 17	€ 18
Total Joint Ventures	0	0	0
Total Investments accounted for using the equity method	16	17	18
Tiglio I S. r. l [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Others	5	7	8
NordCom S.p.A. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Others	5	5	5
W.A.Y. S.r.l. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Others	3	3	3
Other minor companies [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Others	3	2	2
Alfiere SPA [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Total Joint Ventures	€ 0	€ 0	€ 0

Investments - Summary of Change

Investments - Summary of Changes in Investments in Associates and Joint Ventures (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Investments in Associates, Beginning Balance	€ 17	€ 18
Investments	0	0
Disposals and reimbursements of capital	0	0
Valuation using equity method	(1)	(1)
Investments in Associates, Ending Balance	16	17
Investments in Joint Ventures, Beginning Balance	0	0
Joint Ventures, Investments	0	0
Joint Ventures, Disposals and reimbursements of capital	0	0
Joint Ventures, Valuation using equity method	0	0
Investments in Joint Ventures, Ending Balance	0	0
Investments in Associates and Joint Ventures, Beginning Balance	17	18
Associates and Joint Ventures,Investments	0	0
Associates and Joint Ventures,Disposals and reimbursements of capital	0	0
Associates and Joint Ventures,Valuation using equity method	(1)	(1)
Investments in Associates and Joint Ventures,, Ending Balance	16	17
Alfiere SPA [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Investments in Joint Ventures, Beginning Balance	0	0
Joint Ventures, Investments	0	0
Joint Ventures, Disposals and reimbursements of capital	0	0
Joint Ventures, Valuation using equity method	0	0
Investments in Joint Ventures, Ending Balance	0	0
Tiglio I S. r. l [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Investments in Associates, Beginning Balance	7	8
Investments	0	0
Disposals and reimbursements of capital	0	0
Valuation using equity method	(2)	(1)
Investments in Associates, Ending Balance	5	7
NordCom S.p.A. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Investments in Associates, Beginning Balance	5	5
Investments	0	0
Disposals and reimbursements of capital	0	0
Investments in Associates, Ending Balance	5	5
W.A.Y. S.r.l. [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Investments in Associates, Beginning Balance	3	3
Investments	0	0
Disposals and reimbursements of capital	0	0
Investments in Associates, Ending Balance	3	3
Other minor companies [member]
Disclosure Of Investments In Associates And Joint Ventures Accounted For Using Equity Method [line items]
Investments in Associates, Beginning Balance	2	2
Investments	0	0
Disposals and reimbursements of capital	0	0
Valuation using equity method	1
Investments in Associates, Ending Balance	€ 3	€ 2

Investments - Additional Inform

Investments - Additional Information (Detail)	Dec. 31, 2018USD ($)
Alfiere SPA [member]
Disclosure of joint ventures [line items]
Write down of joint ventures related to investment	$ 0

Investments - Summary of Financ

Investments - Summary of Financial Statement in Joint Venture (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Dec. 31, 2015
Disclosure of joint ventures [line items]
Non-current assets	€ 56,890	€ 58,452
Current assets	8,729	10,331
Total Assets	65,619	68,783		€ 68,326
Non-current liabilities	30,991	32,612
Current liabilities	12,881	12,388
Total Liabilities	43,872	45,000
Equity	21,747	23,783	€ 23,553	23,695	€ 21,249
Total Equity and liabilities	65,619	68,783		€ 68,326
Profit (loss) for the year	€ (1,152)	1,287	€ 1,966
Alfiere SPA [member]
Disclosure of joint ventures [line items]
Non-current assets		156.6
Current assets		3.5
Total Assets		160.1
Non-current liabilities		142.9
Current liabilities		13.6
Total Liabilities		156.5
Equity		3.6
Total Equity and liabilities		160.1
Profit (loss) for the year		(5.7)
TIM Group's share 50% [member]
Disclosure of joint ventures [line items]
Non-current assets		78.3
Current assets		1.8
Total Assets		80.1
Non-current liabilities		71.5
Current liabilities		6.8
Total Liabilities		78.3
Equity		1.8
Total Equity and liabilities		80.1
Profit (loss) for the year		€ (2.9)

Investments - Summary of Other

Investments - Summary of Other Investments (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	€ 51	€ 46
Investments	3	3
Disposals and reimbursements of capital	(1)
Measurement at fair value	(4)	4
Other changes		(2)
Ending balance	49	51
Assicurazioni generali [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	3	2
Measurement at fair value		1
Ending balance	3	3
Fin.Priv. [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	20	17
Measurement at fair value	(4)	3
Ending balance	16	20
Northgate CommsTech Innovations Partners LP [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	17	14
Investments	2	3
Ending balance	16	17
Northgate CommsTech Innovations Partners LP [member] | IFRS 9 [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
IFRS 9 Adoption	(3)
Other minor companies [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
Beginning balance	11	13
Investments	1
Disposals and reimbursements of capital	(1)
Other changes		(2)
Ending balance	14	€ 11
Other minor companies [member] | IFRS 9 [member]
Disclosure of Noncurrent Investments Other Than Investments Accounted For Using Equity Method [line items]
IFRS 9 Adoption	€ 3

Financial Assets (Non-Current_3

Financial Assets (Non-Current and Current) - Financial Assets (Non-Current and Current) (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Securities, financial receivables and other non-current financial assets:
Securities other than investments	€ 0		€ 0
Receivables from employees	43		47
Financial receivables for lease contracts	54		69
Hedging derivatives relating to hedged items classified as non-current assets/liabilities of a financial nature	1,490		1,495
Non-hedging derivatives	7		7
Other financial receivables			150
Total non-currentfinancial assets	1,594	€ 1,768	1,768
Securities other than investments
Held for trading	0		0
Held to maturity	0		0
Available for sale			993
Measured at amortized cost (AC)	0		0
Measured at fair value through other comprehensive income (FVTOCI)	945
Measured at fair value through profit or loss (FVPTL)	181
Securities other than investments	1,126		993
Financial receivables and other current financial assets:
Liquid assets with banks, financial institutions and post offices (with a maturity greater than 3 months)			100
Receivables from employees	14		16
Financial receivables for lease contracts	70		45
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature	242		260
Non-hedging derivatives	12		15
Other short-term financial receivables	2		1
Financial receivables and other current financial assets	340		437
Cash and cash equivalents	1,917		3,575	€ 3,964	€ 3,559
Current financial assets	3,383	€ 5,005	5,005
Financial assets relating to Discontinued operations/Non-current assets held for sale	0		0
Total	€ 4,977		€ 6,773

Financial Assets (Non-current_4

Financial Assets (Non-current and Current) - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018
Disclosure of financial assets [line items]
Securities other than investments measured at fair value through other comprehensive income (FVTOCI)		€ 945
Securities other than investments measured at fair value through profit or loss (FVTPL)		181
Decrease in cash and cash equivalents from prior year	€ 1,658
Securities other than investments (due within 3 months)	745	222
TIM S.p.A. [member]
Disclosure of financial assets [line items]
Securities other than investments measured at fair value through other comprehensive income (FVTOCI)		252
INWIT S.p. A [member]
Disclosure of financial assets [line items]
Securities other than investments measured at fair value through other comprehensive income (FVTOCI)		10
Securities other than investments measured at fair value through profit or loss (FVTPL)		181
Italian Treasury Bonds [member]
Disclosure of financial assets [line items]
Securities other than investments measured at fair value through other comprehensive income (FVTOCI)		558
Italian Treasury Bonds Purchased by Telecom Italia Finance S.A. [member]
Disclosure of financial assets [line items]
Securities other than investments measured at fair value through other comprehensive income (FVTOCI)		296
Italian Treasury Bonds Purchased by Telecom Italia Finance S.A. with Different Maturities [member]
Disclosure of financial assets [line items]
Securities other than investments measured at fair value through other comprehensive income (FVTOCI)		387
Certificado de deposito bancario [member]
Disclosure of financial assets [line items]
Securities other than investments (due within 3 months)	€ 744	€ 221

Financial Assets (Non-Current_5

Financial Assets (Non-Current and Current) - Schedule of Decrease In Cash and Cash Equivalents (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Cash And Cash Equivalents [abstract]
Liquid assets with banks, financial institutions and post offices	€ 1,694	€ 2,828
Checks, cash and other receivables and deposits for cash flexibility	1	2
Securities other than investments (due within 3 months)	222	745
Total	€ 1,917	€ 3,575	€ 3,964	€ 3,559

Miscellaneous Receivables and_3

Miscellaneous Receivables and Other Non-Current Assets - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure miscellaneous receivables and other non current assets [line items]
Increase (decrease) miscellaneous receivables and other non-current assets	€ (131)
Miscellaneous receivables	697	€ 704
Income tax receivables	88	96
Other non-current assets	5,086	5,251
Contract costs with lock-in clauses from intangible assets, short and medium/long-term	110
Contract costs with lock-in clauses from intangible assets, medium/long-term	50
Rental cost of TIM S.p.A	€ 63
Mobile business [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Deferred contract costs expected duration	3 years
Fixed business [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Deferred contract costs expected duration	7 years
Tim Group [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Other non-current assets	€ 1,594	1,718
Deferred contract costs	1,531
Brazil business unit [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Miscellaneous receivables	646	651
Court deposits receivables	€ 307	€ 349

Miscellaneous Receivables and_4

Miscellaneous Receivables and Other Non-Current Assets - Schedule of Increase/Decrease in Miscellaneous Receivable and Other Non-Current Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure miscellaneous receivables and other non current assets [line items]
Miscellaneous receivables ( non-current)	€ 697	€ 704
Other non-current assets	0	0
Deferred contract costs	1,531
Other cost deferrals	63
Medium/long-term prepaid expenses		1,718
Total other non-current assets	1,594	1,718
Total	2,291	2,422
FInancial instruments IAS 39 [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Miscellaneous receivables ( non-current)	326	371
Other non-current assets	0	0
Total	€ 326	€ 371

Miscellaneous Receivables and_5

Miscellaneous Receivables and Other Non-current Assets - Schedule on Impacts by Adoption of IFRS 15 (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure miscellaneous receivables and other non current assets [line items]
Miscellaneous receivables (non-current)	€ 697		€ 704
Other non-current assets	0		0
Deferred contract costs	1,531
Other cost deferrals	63
Medium/long-term prepaid expenses			1,718
Total other non-current assets	1,594		1,718
Total	2,291		€ 2,422
Miscellaneous receivables and other non current assets [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Miscellaneous receivables (non-current)	704	€ 704
Other non-current assets	0	0
Deferred contract costs		1,395
Other cost deferrals		54
Medium/long-term prepaid expenses	1,718
Total other non-current assets	1,718	1,449
Total	2,422	€ 2,153
Miscellaneous receivables and other non current assets [member] | IFRS 15 Reclassification [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Other non-current assets	0
Deferred contract costs	1,714
Other cost deferrals	54
Medium/long-term prepaid expenses	(1,718)
Total other non-current assets	50
Total	50
IFRS 15 adjustments [member] | Miscellaneous receivables and other non current assets [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Other non-current assets	0
Deferred contract costs	(319)
Total other non-current assets	(319)
Total	€ (319)

Miscellaneous Receivables and_6

Miscellaneous Receivables and Other Non-current Assets - Schedule of Break Down of Total Deferred Contract Costs (Detail) € in Millions	Dec. 31, 2018EUR (€)
Disclosure miscellaneous receivables and other non current assets [line items]
Deferred contract cost	€ 2,165
Costs to obtain contracts with customers [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Deferred contract cost	1,132
Costs to fulfil contracts with customers [member]
Disclosure miscellaneous receivables and other non current assets [line items]
Deferred contract cost	€ 1,033

Miscellaneous Receivables and_7

Miscellaneous Receivables and Other Non-current Assets - Schedule of Movements in Total Deferred Contract Costs (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure miscellaneous receivables and other non current assets [line items]
Release to income statement	€ (2,586)	€ (37)	€ (3)
Exchange differences and other changes		€ (10)
Deferred Contract Costs [Member]
Disclosure miscellaneous receivables and other non current assets [line items]
Beginning balance	1,936
Increase	821
Release to income statement	(587)
Exchange differences and other changes	(5)
Ending balance	2,165
Costs to obtain contracts with customers [member] | Deferred Contract Costs [Member]
Disclosure miscellaneous receivables and other non current assets [line items]
Beginning balance	1,031
Increase	473
Release to income statement	(367)
Exchange differences and other changes	(5)
Ending balance	1,132
Costs to fulfil contracts with customers [member] | Deferred Contract Costs [Member]
Disclosure miscellaneous receivables and other non current assets [line items]
Beginning balance	905
Increase	348
Release to income statement	(220)
Ending balance	€ 1,033

Income Taxes (Current and Def_3

Income Taxes (Current and Deferred) - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Disclosure of Income Taxes [line items]
Non-current and current income tax receivables	€ 339	€ 173
Non-current income tax receivables	88	96
Current income tax receivables	251	77
Net deferred tax liability assets	944	728
Net deferred tax assets	1,136	993		€ 1,020
Net deferred tax liabilities	192	265		€ 262
Unused tax loss carryforwards	2,163
Deferred tax assets have not been recognized	406	647
Tax loss carryforwards	1,554
Deferred tax liabilities have not been recognized	1,000
Income tax payables	109	157
Non-current portion of income tax payable	42	45
Current portion of income tax payable	67	112
Decrease Increase of income tax expenses	115
Income tax expenses	375	490	€ 928
Telecom Italia capital [member]
Disclosure of Income Taxes [line items]
Net deferred tax liabilities	€ 155	174
Italy [member]
Disclosure of Income Taxes [line items]
Applicable tax rate	24.00%
Business unit [member]
Disclosure of Income Taxes [line items]
Current portion of income tax payable	€ 67
Business unit [member] | Brazil [member]
Disclosure of Income Taxes [line items]
Current income tax receivables	78
Net deferred tax assets		200
Net deferred tax liabilities	177
Unused tax loss carryforwards	609	91
Non-current portion of income tax payable	42
Current portion of income tax payable	42
Business unit [member] | Domestic business unit [member]
Disclosure of Income Taxes [line items]
Current income tax receivables	171
Net deferred tax assets	917	939
Net deferred tax liabilities	25	€ 54
Current portion of income tax payable	€ 18

Income Taxes (Current and Def_4

Income Taxes (Current and Deferred) - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Major components of tax expense (income) [abstract]
Deferred tax assets	€ 1,136	€ 1,020	€ 993
Deferred tax liabilities	(192)	€ (262)	(265)
Total	€ 944		€ 728

Income Taxes (Current and Def_5

Income Taxes (Current and Deferred) - Schedule of Deferred Tax Assets and Deferred Tax Liabilities Before Offsets by Legal Entity (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	€ 1,136	€ 1,020	€ 993
Deferred tax liabilities	(192)	€ (262)	(265)
Net deferred tax liability assets	944		728
Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	1,592		1,429
Deferred tax liabilities	(648)		(701)
Net deferred tax liability assets	€ 944		€ 728

Income Taxes (Current and Def_6

Income Taxes (Current and Deferred) - Schedule of Temporary Differences in Deferred Tax Assets and Deferred Tax Liabilities (Detail) € in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	€ 993
Deferred tax liabilities, beginning balance	(265)
Total net deferred tax assets (liabilities), beginning balance	728
Deferred tax assets (liabilities), Recognized in profit or loss	196
Deferred tax assets (liabilities), Recognized in equity	(10)
Deferred tax assets, ending balance	1,136
Deferred tax liabilities, ending balance	(192)
Total net deferred tax assets (liabilities), ending balance	944
Increase (decrease) due to application of IFRS 9 [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total net deferred tax assets (liabilities), beginning balance	38
IFRS 15 adjustments [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total net deferred tax assets (liabilities), beginning balance	(8)
Deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(701)
Deferred tax assets (liabilities), Recognized in profit or loss	38
Deferred tax assets (liabilities), Recognized in equity	4
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	8
Deferred tax liabilities, ending balance	(648)
Deferred tax liabilities [member] | Business combinations-for step-up of net assets in excess of tax basis [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(131)
Deferred tax assets (liabilities), Recognized in profit or loss	4
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	13
Deferred tax liabilities, ending balance	(114)
Deferred tax liabilities [member] | Deferred gains [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(2)
Deferred tax assets (liabilities), Recognized in equity	2
Deferred tax liabilities [member] | Accelerated depreciation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(14)
Deferred tax liabilities, ending balance	(14)
Deferred tax liabilities [member] | Other deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(132)
Deferred tax assets (liabilities), Recognized in profit or loss	35
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	(5)
Deferred tax liabilities, ending balance	(99)
Deferred tax liabilities [member] | Derivatives [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(422)
Deferred tax assets (liabilities), Recognized in profit or loss	(1)
Deferred tax assets (liabilities), Recognized in equity	2
Deferred tax liabilities, ending balance	(421)
Deferred tax liabilities [member] | Increase (decrease) due to application of IFRS 9 [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	11
Deferred tax liabilities [member] | Increase (decrease) due to application of IFRS 9 [member] | Other deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	11
Deferred tax liabilities [member] | IFRS 15 adjustments [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(8)
Deferred tax liabilities [member] | IFRS 15 adjustments [member] | Other deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities, beginning balance	(8)
Deferred tax assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	1,429
Deferred tax assets (liabilities), Recognized in profit or loss	158
Deferred tax assets (liabilities), Recognized in equity	(14)
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	(8)
Deferred tax assets, ending balance	1,592
Deferred tax assets [member] | Provision for bad debts [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	142
Deferred tax assets (liabilities), Recognized in profit or loss	11
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	6
Deferred tax assets, ending balance	186
Deferred tax assets [member] | Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	452
Deferred tax assets (liabilities), Recognized in profit or loss	(12)
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	(8)
Deferred tax assets, ending balance	432
Deferred tax assets [member] | Tax loss carryforwards [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	32
Deferred tax assets (liabilities), Recognized in profit or loss	181
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	(8)
Deferred tax assets, ending balance	205
Deferred tax assets [member] | Taxed depreciation and amortization [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	106
Deferred tax assets (liabilities), Recognized in profit or loss	8
Deferred tax assets, ending balance	114
Deferred tax assets [member] | Other deferred tax assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	108
Deferred tax assets (liabilities), Recognized in profit or loss	(23)
Deferred tax assets (liabilities), Recognized in equity	(5)
Deferred tax assets (liabilities), Change in scope of consolidation and other changes	2
Deferred tax assets, ending balance	82
Deferred tax assets [member] | Derivatives [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	589
Deferred tax assets (liabilities), Recognized in profit or loss	(7)
Deferred tax assets (liabilities), Recognized in equity	(9)
Deferred tax assets, ending balance	573
Deferred tax assets [member] | Increase (decrease) due to application of IFRS 9 [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	27
Deferred tax assets [member] | Increase (decrease) due to application of IFRS 9 [member] | Provision for bad debts [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets, beginning balance	€ 27

Income Taxes (Current and Def_7

Income Taxes (Current and Deferred) - Schedule of Expirations of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	€ 1,136	€ 1,020	€ 993
Deferred tax liabilities	(192)	€ (262)	(265)
Total net deferred tax assets (liabilities)	944		728
Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	1,592		1,429
Deferred tax liabilities	(648)		(701)
Total net deferred tax assets (liabilities)	944		€ 728
Within 1 year [member] | Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	383
Deferred tax liabilities	(18)
Total net deferred tax assets (liabilities)	365
Beyond 1 year [member] | Deferred [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	1,209
Deferred tax liabilities	(630)
Total net deferred tax assets (liabilities)	€ 579

Income Taxes (Current and Def_8

Income Taxes (Current and Deferred) - Schedule of Unused Tax Loss Carryforwards (Detail) € in Millions	Dec. 31, 2018EUR (€)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	€ 2,163
2022 [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	1
Beyond 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	39
Without expiration [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total unused tax loss carryforwards	€ 2,123

Income Taxes (Current and Def_9

Income Taxes (Current and Deferred) - Schedule of Income Tax Payables (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Income tax payables:
Non-current	€ 42	€ 45
Current	67	112
Total	€ 109	€ 157

Income Taxes (Current and De_10

Income Taxes (Current and Deferred) - Schedule of Income Tax Expense (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Major components of tax expense (income) [abstract]
Current taxes for the year	€ 547	€ 646	€ 900
Net difference in prior years estimates	24	(6)	(54)
Total current taxes	571	640	846
Deferred taxes	(196)	(150)	34
Total effective income tax recognized in income statement from continuing operations	375	490	880
Total taxes on Discontinued operations/Non-current assets held for sale			48
Total effective income tax recognized in income statements	€ 375	€ 490	€ 928

Income Taxes (Current and De_11

Income Taxes (Current and Deferred) - Schedule of Reconciliation Between the Theoretical Tax Expense (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Reconciliation of Effective Income Tax Expense [line items]
Profit (loss) before tax from continuing operations	€ (777)	€ 1,777	€ 2,799
Theoretical income tax from continuing operations	(186)	426	770
Income tax effect on increases (decreases) in variations:
Tax losses of the year not considered recoverable	9	3	17
Tax losses from prior years not recoverable (recoverable) in future years	(225)	(2)	(1)
Non-deductible goodwill impairment charge	621
Effect of change in IRES tax rate			25
Prior years' IRES	25	(26)	(38)
Other net differences	(19)	(55)	(26)
Effective income tax recognized in income statement from continuing operations, excluding IRAP tax	235	349	727
IRAP tax	140	141	153
Total effective income tax recognized in income statement from continuing operations	375	490	880
Effective income tax recognized in income statement from Discontinued operations/Non-current assets held for sale			48
Total effective income tax recognized in income statements	375	490	928
Brazil [member]
Income tax effect on increases (decreases) in variations:
Brazil: different rate compared to theoretical rate in force in Italy	44	34	11
Brazil: incentive on investments in the north-east of the country	€ (34)	€ (31)	€ (31)

Inventories - Additional Inform

Inventories - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of inventories [line items]
Changes of inventories	€ 99
Inventories	389	€ 290
Inventories net of provision for loss	11	13
Domestic [member]
Disclosure of inventories [line items]
Inventories	348	259
Brazil [member]
Disclosure of inventories [line items]
Inventories	€ 41	€ 31

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Classes of current inventories [abstract]
Raw materials and supplies	€ 1	€ 1
Work in progress and semi-finished products	1	3
Finished goods	387	286
Total	€ 389	€ 290

Trade and Miscellaneous Recei_3

Trade and Miscellaneous Receivables and Other Current Assets - Additional Information (Detail) - EUR (€) € in Millions	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2017
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Increase in trade and miscellaneous receivables and other current assets			€ 253
Change in overdue receivables		€ (66)
Trade receivables	€ 3,353	3,327	3,500
Provision for bad debts		769	597
Non-current receivables		39	43
Other receivables		424	645
Provision for bad debts, other		52	54
Tax returns other taxes and value added tax receivable		3
Government grants		91
Contract Assets	35	€ 46
Contract with customers, discount period		Less than the minimum contractual term (usually 6 or 12 months in 24-month contracts)
Deferred contract costs	541	€ 634
Contract costs with lock-in clauses from intangible assets		110
Contract costs with lock-in clauses from intangible assets, short-term		60
Other cost deferrals	246	220
Trade and miscellaneous prepaid expenses			780
IFRS 9 [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Write-downs of expected lossess on trade receivables	€ 147
0 - 90 days (Overdue) [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Change in overdue receivables		(90)
Social Security and Assistance Agencies [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Trade receivables		23
Miscellaneous receivables [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Trade receivables		42
Factoring of receivables [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Trade receivables		€ 60
Mobile business [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Deferred activation costs expected duration		3 years
Fixed business [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Deferred activation costs expected duration		7 years
Contract assets [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Provision for bad debts, other		€ 3
Brazil business unit [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Change in receivables		25
Impact of a negative exchange rate adjustment		(54)
Trade receivables			€ 669
Current tax assets		70
Other cost deferrals		17
Brazil business unit [member] | 0 - 90 days (Overdue) [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Change in receivables		(3)
Impact of a negative exchange rate adjustment		(15)
TIM S.p.A [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Change in receivables		(73)
Trade receivables		2,268
Rent payments		59
Building leases		17
Insurance premium		5
Maintenance fees		2
TIM S.p.A [member] | 0 - 90 days (Overdue) [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Change in receivables		(62)
OLIVETTI S.p.A. [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Change in receivables		(14)
INWIT S.p. A [member]
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Other cost deferrals		€ 24

Trade and Miscellaneous Recei_4

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Increase in Trade and Miscellaneous Receivables and Other Current Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Amounts due on construction contracts	€ 55	€ 34	€ 34
Trade receivables
Receivables from customers	2,290	2,387	2,528
Receivables from other telecommunications operators	1,037	966	972
Trade receivables	3,327	3,353	3,500
Miscellaneous receivables (current)
Other receivables	424	645	645
Other current assets
Activities deriving from contracts (Contract Assets)	46	35
Deferred contract costs	634	541
Other cost deferrals	220	246
Trade and miscellaneous prepaid expenses			780
Miscellaneous receivables (current)	900		780
Total	4,706	€ 4,854	4,959
IAS 39 financial instruments [member]
Trade receivables
Receivables from customers	2,290		2,528
Receivables from other telecommunications operators	1,037		972
Trade receivables	3,327		3,500
Miscellaneous receivables (current)
Other receivables	125		154
Other current assets
Activities deriving from contracts (Contract Assets)	46
Miscellaneous receivables (current)	46
Total	€ 3,498		€ 3,654

Trade and Miscellaneous Recei_5

Trade and Miscellaneous Receivables and Other Current Assets - Schedule on Impacts By Adoption Of IFRS 9 and IFRS 15 (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure of trade and miscellaneous receivables and other current assets amount [line items]
Amounts due on construction contracts	€ 55	€ 34	€ 34
Trade receivables
Receivables from customers	2,290	2,387	2,528
Receivables from other telecommunications operators	1,037	966	972
Trade receivables	3,327	3,353	3,500
Miscellaneous receivables (current)
Other receivables	424	645	645
Other current assets
Activities deriving from contracts (Contract Assets)	46	35
Deferred contract costs	634	541
Other cost deferrals	220	246
Trade and miscellaneous prepaid expenses			780
Other current assets		822	780
Total	4,706	€ 4,854	€ 4,959
IFRS 15 Reclassification [member]
Other current assets
Deferred contract costs	594
Other cost deferrals	246
Trade and miscellaneous prepaid expenses	(780)
Other current assets	60
Total	60
IFRS 9 Adjustments [member]
Trade receivables
Receivables from customers	(141)
Receivables from other telecommunications operators	(6)
Trade receivables	(147)
Other current assets
Total	(147)
IFRS 15 adjustments [member]
Other current assets
Activities deriving from contracts (Contract Assets)	35
Deferred contract costs	(53)
Other current assets	(18)
Total	€ (18)

Trade and Miscellaneous Recei_6

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Analyses of the Aging of Trade and Miscellaneous Receivables (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Trade and miscellaneous receivables and other current assets	€ 4,706	€ 4,854	€ 4,959
IAS 39 financial instruments [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Trade and miscellaneous receivables and other current assets	3,498		3,654
Total Current	2,715		2,781
Overdue	783		873
IAS 39 financial instruments [member] | 0-90 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	175		300
IAS 39 financial instruments [member] | 91-180 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	134		178
IAS 39 financial instruments [member] | 181-365 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	158		188
IAS 39 financial instruments [member] | More than 365 days [member]
Disclosure Of Aging Of Trade And Miscellaneous Receivables And Other Current Assets [Line items]
Overdue	€ 316		€ 207

Trade and Miscellaneous Recei_7

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Provision for Bad Debts (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of provision for bad debts [line items]
Beginning balance	€ 597	€ 648
Provision charges to the income statement	320	242
Utilization and decreases	(281)	(278)
Exchange differences and other changes	(14)	(15)
Ending balance	769	€ 597
IFRS 9 [member]
Disclosure of provision for bad debts [line items]
Effects of IFRS 9 adoption	€ 147

Trade and Miscellaneous Recei_8

Trade and Miscellaneous Receivables and Other Current Assets - Summary of Other Receivables (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure of other receivables [abstract]
Advances to suppliers	€ 24		€ 69
Receivables from employees	11		12
Tax receivables	87		135
Receivables for grants from the government and public entities	91		207
Sundry receivables	211		222
Total	€ 424	€ 645	€ 645

Discontinued Operations_Non-C_3

Discontinued Operations/Non-Current Assets Held for Sale - Additional Information (Detail) € in Millions, $ in Millions	Mar. 08, 2016EUR (€)	Mar. 08, 2016USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2016EUR (€)	Dec. 31, 2015
Noncurrent assets held for sale and discontinued operations [line items]
Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of | €				€ 492
Sofora-Telecom Argentina [member]
Noncurrent assets held for sale and discontinued operations [line items]
Proceeds from discontinued operations		$ 550.6	$ 960
Proceeds from sale that result in a loss of control of subsidiaries or other businesses, net of cash disposed of | €	€ 492
Proceeds from discontinued operations, respect to ancillary agreements		$ 50
Sofora-Telecom Argentina [member] | Fintech [member]
Noncurrent assets held for sale and discontinued operations [line items]
Proceeds from discontinued operations, respect to ancillary agreements			329.5
Telecom argentina group [member]
Noncurrent assets held for sale and discontinued operations [line items]
Proceeds generated by making technical support services available			$ 30
Average foreign exchange rate pesos per euro				15.7981	10.2689

Discontinued Operations_non-c_4

Discontinued Operations/non-current Assets Held for Sale - Summary of Income Statement Impacts from The Sofora-telecom Argentina Group and its Sale (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income statement effects from Discontinued operations/Non-current assets held for sale:
Revenues			€ (23)
Gains (losses) on disposals of non-current assets	€ (1)	€ 11	14
Income statement effects on the selling entities:
Profit (loss) from Discontinued operations/Non-current assets held for sale			47
Attributable to:
Non-controlling interests			50
Sofora-Telecom Argentina [member]
Income statement effects from Discontinued operations/Non-current assets held for sale:
Revenues			504
Operating expenses			(372)
Gains (losses) on disposals of non-current assets	0	0	0
Goodwill and other non-current assets net impairment losses	0	0	0
Operating profit (loss)			133
Finance income (expenses)			(42)
Profit (loss) before tax from Discontinued operations/Non-current assets held for sale			91
Income tax expense			(32)
Profit (loss) after tax from Discontinued operations/Non-current assets held for sale			59
Other minor income statement effects:
Other income/(expenses) connected to sales in previous years	0	0	0
Other minor entries	0	0	0
Other Minor Income Statement Effects	€ 0	€ 0	0
Profit (loss) from Discontinued operations/Non-current assets held for sale			59
Income statement effects on the selling entities:
Net gains on disposal			307
Transfer to the separate consolidated dated income statement of the Reserve for exchange differences on translating foreign operations			(304)
Income tax expense relating to the disposal			(15)
Income statement effects on selling entities			(12)
Profit (loss) from Discontinued operations/Non-current assets held for sale			47
Attributable to:
Owners of the Parent			(3)
Non-controlling interests			€ 50

Discontinued Operations_non-c_5

Discontinued Operations/non-current Assets Held for Sale - Summary of Earnings Per Share from Discontinued Operations/non-current Assets Held for Sale (Detail) - € / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-currentassets held for sale
Basic and diluted earnings per share	€ 0	€ 0	€ 0
Savings Share [member]
Basic and Diluted Earnings Per Share (EPS) from Discontinued operations/Non-currentassets held for sale
Basic and diluted earnings per share	€ 0	€ 0	€ 0

Discontinued Operations_non-c_6

Discontinued Operations/non-current Assets Held for Sale - Summary of Consolidated Statements of Cash Flows and its Net Impacts, Expressed in "Discontinued Operations/non-current Assets Held for Sale" (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Discontinued operations/Non-current assets held for sale:
Cash flows from (used in) operating activities			€ 130
Cash flows from (used in) investing activities			(117)
Cash flows from (used in) financing activities			(58)
Total			€ (45)

Equity - Summary of Components

Equity - Summary of Components of Equity (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of classes of share capital [abstract]
Equity attributable to owners of the Parent	€ 19,528	€ 21,474	€ 21,557
Non-controlling interests	2,219	2,221	2,226
Total	€ 21,747	€ 23,695	€ 23,783	€ 23,553	€ 21,249

Equity - Summary of Reserves an

Equity - Summary of Reserves and Other Equity Interest (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Disclosure of classes of share capital [abstract]
Share capital	€ 11,587	€ 11,587
Additional paid-incapital	2,094	2,094
Other reserves and retained earnings (accumulated losses), including profit (loss) for the year	5,847	7,876
Total	19,528	21,557		€ 21,474
Reserve for financial assets measured at fair value through other comprehensive income	30	42
Reserve for hedging instruments	(563)	(582)
Reserve for exchange differences on translating foreign operations	(1,340)	(955)
Reserve for remeasurements of employee defined benefit plans (IAS 19)	(90)	(104)
Share of other comprehensive income (loss) of associates and joint ventures accounted for using the equity method	0	0	€ 0
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year	€ 7,810	€ 9,475

Equity - Additional Information

Equity - Additional Information (Detail) - EUR (€) € / shares in Units, € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Disclosure of classes of share capital [line items]
Treasury shares	€ 90	€ 90
Share capital	11,587
Total value of ordinary treasury shares	510
Deduction from share capital issued	90
Additional paid-in capital	2,094	2,094
Increase in additional paid in capital		0
Reserve of gains and losses on financial assets measured at fair value through other comprehensive income	30
Increase in reserve for available-for-sale financial assets	(12)
Fair value adjustment of other available-for-sale financial assets to parent	(10)
Unrealized gains on investment	9
Reserve expressed net of deferred tax liabilities	9	11
Financial assets measured at fair value through other comprehensive income, growth				€ 9
Reserve for cash flow hedges	563	582
Net deferred tax assets	157	164
Reserve for exchange differences on translating foreign operations	1,340	955
Reserve for remeasurements of employee defined benefit plans	90	104
Other profits (losses) of associates and joint ventures accounted for using the equity method	0	0	€ 0
Sundry reserves and retained earnings (accumulated losses), including profit (loss)	7,810	9,475
Dividends approved	281	230	204
Equity attributable to non-controlling interests	€ 2,219	2,226		€ 2,221
TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Description to dividend distribution	The profit shown in the duly approved separate financial statements, less the amount appropriated to the legal reserve, must be distributed to the holders of savings shares in an amount up to 5% of the 0.55 euros per share
Percentage of distribution to share holders	2.00%
Distribution to share holders per share	€ 0.55
Number of years dividend distribution difference carried over to preferred dividends	Two
Pre-emptive right in reimbursement of capital per share	€ 0.55
INWIT S.p. A [member]
Disclosure of classes of share capital [line items]
Group Company dividends paid to non-controlling shareholders	€ 46	35
Top of range [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Percentage of distribution to share holders	5.00%
Bottom of range [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Percentage of distribution to share holders	5.00%
Brazil business unit [member]
Disclosure of classes of share capital [line items]
Reserve for exchange differences on translating foreign operations	€ 1,340	955
Group Company dividends paid to non-controlling shareholders	66	25
Sofora-Telecom Argentina group [member]
Disclosure of classes of share capital [line items]
Reserve for exchange differences on translating foreign operations	1,360	969
Business unit [member] | Brazil [member]
Disclosure of classes of share capital [line items]
Equity attributable to non-controlling interests	1,518
Business unit [member] | Domestic business unit [member] | INWIT S.p. A [member]
Disclosure of classes of share capital [line items]
Equity attributable to non-controlling interests	620
Telecom Italia Finance [member]
Disclosure of classes of share capital [line items]
Unrealized gains on securities portfolio	€ (7)
American Depositary Receipts [member] | J P Morgan Chase Bank [member]
Disclosure of classes of share capital [line items]
Number of shares corresponding to ADS	10
Reserve for remeasurements of employee defined benefit plans (IAS 19) [member]
Disclosure of classes of share capital [line items]
Net deferred tax assets	€ 21	26
Change in reserve for remeasurement of employee defined benefit plans	14
Non-controlling interests [member]
Disclosure of classes of share capital [line items]
Reserve for exchange differences on translating foreign operations	640	471
Dividends approved	115	64	38
Decrease in non-controlling interests	(7)	(120)
Group Company dividends paid to non-controlling shareholders	(115)	(64)
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year [member]
Disclosure of classes of share capital [line items]
Increase in sundry reserves and retained earnings (accumulated losses), including profit (loss)	(1,665)	958
Dividends approved	€ 166	€ 166	€ 166
Dividend per share	€ 0.0275

Equity - Summary of Reconciliat

Equity - Summary of Reconciliation Between the Number of Outstanding Shares (Detail) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Ordinary Shares issued [member]
Disclosure of classes of share capital [line items]
Beginning balance	15,203,122,583	15,203,122,583	13,499,911,771
Change in share issues	0	0
Ending balance	15,203,122,583	15,203,122,583	15,203,122,583
Percentage of share capital	71.61%	71.61%	71.61%
Less: Treasury Shares [member]
Disclosure of classes of share capital [line items]
Beginning balance	(163,754,388)	(163,754,388)	(163,754,388)
Change in share issues	0	0
Ending balance	(163,754,388)	(163,754,388)	(163,754,388)
Ordinary Shares Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	15,039,368,195	15,039,368,195	13,336,157,383
Change in share issues	0	0
Ending balance	15,039,368,195	15,039,368,195	15,039,368,195
Savings Shares Issued and Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	6,027,791,699	6,027,791,699	6,027,791,699
Change in share issues	0	0
Ending balance	6,027,791,699	6,027,791,699	6,027,791,699
Percentage of share capital	28.39%	28.39%	28.39%
6.125% Mandatory Convertible Bonds Due 2016 [member] | Ordinary Shares issued [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016			1,703,210,812
6.125% Mandatory Convertible Bonds Due 2016 [member] | Ordinary Shares Outstanding [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016			1,703,210,812
TIM S.p.A [member] | Shares issued [member]
Disclosure of classes of share capital [line items]
Beginning balance	21,230,914,282	21,230,914,282	19,527,703,470
Change in share issues	0	0
Ending balance	21,230,914,282	21,230,914,282	21,230,914,282
Percentage of share capital	100.00%	100.00%	100.00%
TIM S.p.A [member] | Shares outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	21,067,159,894	21,067,159,894	19,363,949,082
Change in share issues	0	0
Ending balance	21,067,159,894	21,067,159,894	21,067,159,894
TIM S.p.A [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member] | Shares issued [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016			1,703,210,812
TIM S.p.A [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member] | Shares outstanding [member]
Disclosure of classes of share capital [line items]
Shares issued for the full convertion of the Mandatory Convertible Bond due 2016			1,703,210,812

Equity - Summary of Reconcili_2

Equity - Summary of Reconciliation Between the Value of Outstanding Shares (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of classes of share capital [line items]
Change in share issues			€ 1,300
Ending balance	€ 11,587
Ordinary Shares issued [member]
Disclosure of classes of share capital [line items]
Beginning balance	8,362	€ 8,362	7,425
Change in share issues	0	0
Ending balance	8,362	8,362	8,362
Ordinary Shares issued [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share issues			937
Less: Treasury Shares [member]
Disclosure of classes of share capital [line items]
Beginning balance	(90)	(90)	(90)
Change in share issues	0	0
Ending balance	(90)	(90)	(90)
Ordinary Shares Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	8,272	8,272	7,335
Change in share issues	0	0
Ending balance	8,272	8,272	8,272
Ordinary Shares Outstanding [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member]
Disclosure of classes of share capital [line items]
Change in share issues			937
Savings Shares Issued and Outstanding [member]
Disclosure of classes of share capital [line items]
Beginning balance	3,315	3,315	3,315
Change in share issues	0	0
Ending balance	3,315	3,315	3,315
Share capital [member]
Disclosure of classes of share capital [line items]
Change in share issues			937
Share capital [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Beginning balance	11,677	11,677	10,740
Change in share issues	0	0
Ending balance	11,677	11,677	11,677
Share capital [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Change in share issues			937
Share capital outstanding [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Beginning balance	11,587	11,587	10,650
Change in share issues	0	0
Ending balance	€ 11,587	€ 11,587	11,587
Share capital outstanding [member] | 6.125% Mandatory Convertible Bonds Due 2016 [member] | TIM S.p.A [member]
Disclosure of classes of share capital [line items]
Change in share issues			€ 937

Equity - Summary of Sundry Rese

Equity - Summary of Sundry Reserves and Retained Earnings (Accumulated Losses), Including Profit (Loss) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Sundry Reserves and Retained Earnings Accumulated Losses Increases [Line Items]
Profit (loss) for the year attributable to Owners of the Parent	€ (1,411)	€ 1,121	€ 1,808
Dividends approved-TIM S.p.A.	(281)	(230)	(204)
Grant of equity instruments	2	(6)	1
Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year [member]
Disclosure of Sundry Reserves and Retained Earnings Accumulated Losses Increases [Line Items]
IFRS 9 and IFRS 15 Adoption	(92)
Profit (loss) for the year attributable to Owners of the Parent	(1,411)	1,121
Dividends approved-TIM S.p.A.	(166)	(166)	(166)
Grant of equity instruments	2	(6)	€ 1
Other changes	2	9
Change for the year in Sundry reserves and retained earnings (accumulated losses), including profit (loss) for the year	€ (1,665)	€ 958

Equity - Summary of Equity Attr

Equity - Summary of Equity Attributable to Non-controlling Interests (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Non Controlling Interests [Line Items]
Profit (loss) for the year attributable to Non-controlling interests	€ 259	€ 166	€ 158
Non-controlling interests [member]
Disclosure of Non Controlling Interests [Line Items]
IFRS 9 and IFRS 15 Adoption	(5)
Profit (loss) for the year attributable to Non-controlling interests	259	166
Group Company dividends paid to non-controlling shareholders	(115)	(64)
Changes in the Reserve for exchange differences on translating foreign operations	(169)	(236)
Other changes	23	14
Change for the year in Equity attributable to Non-Controlling interests	€ (7)	€ (120)

Financial Liabilities (Non-cu_3

Financial Liabilities (Non-current and Current) - Summary of Non-Current and Current Financial Liabilities (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018
Financial payables (medium/long-term):
Bonds	€ 16,686	€ 18,119
Convertible Bonds	1,893	1,862
Amounts due to banks	3,160	3,798
Other financial payables	155	161
Non current financial liabilities	21,894	23,940
Finance lease liabilities (medium/long-term)	1,740	2,249
Bonds	19,598	20,334
Short term of finance lease liabilities (medium/long term)	208	181
Other liabilities	0	0	€ 16
Noncurrent financial liabilities	25,059	28,108
Other current financial liabilities	338	75
Other financial liabilities (medium/long-term):
Other liabilities	0	0	€ 16
Other non current financial liabilities	1,425	1,919
Noncurrent financial liabilities	25,059	28,108
Financial payables (short-term):
Bonds	2,912	2,215
Convertible Bonds	6	6
Amounts due to banks	2,385	2,183
Other financial payables	64	96
Financial payables (short-term)	5,367	4,500
Finance lease liabilities (short-term)	208	181
Total Financial liabilities (Gross financial debt)	30,972	32,864
Other financial liabilities (short-term):
Other liabilities	0	0
Other current financial liabilities	338	75
Total Current financial liabilities	5,913	4,756
Financial liabilities directly associated with Discontinued operations/Non-currentassets held for sale	0	0
Total Financial liabilities (Gross financial debt)	30,972	32,864
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	28,649
Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Amounts due to banks	4,297	5,080
Other financial payables	157	175
Non current financial liabilities	25,951	27,457
Bonds	19,598	20,334
Convertible Bonds	1,899	1,868
Short term of financial payables (medium/long term)	4,057	3,517
Finance lease liabilities (medium/long-term)	1,948	2,430
Short term of finance lease liabilities (medium/long term)	208	181
Other liabilities	0	0
Noncurrent financial liabilities	1,763	1,994
Other current financial liabilities	338	75
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	1,948	2,430
Other liabilities	0	0
Noncurrent financial liabilities	1,763	1,994
Financial payables (short-term):
Amounts due to banks	1,248	901
Other financial payables	62	82
Finance lease liabilities (short-term)	208	181
Financial payables current	1,310	983
Total Financial liabilities (Gross financial debt)	30,972	32,864
Other financial liabilities (short-term):
Other current financial liabilities	338	75
Total Financial liabilities (Gross financial debt)	30,972	32,864
Total	29,221	31,087
Cash transaction [member] | Receipts or issues [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Amounts due to banks	1,705
Non current financial liabilities	2,455
Bonds	750
Finance lease liabilities (medium/long-term)	91
Other liabilities	0
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	91
Other liabilities	0
Financial payables (short-term):
Amounts due to banks	1,793
Financial payables current	1,793
Total Financial liabilities (Gross financial debt)	4,339
Other financial liabilities (short-term):
Total Financial liabilities (Gross financial debt)	4,339
Total	4,339
Cash transaction [member] | Payments and refunds [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Amounts due to banks	(2,425)
Other financial payables	(4)
Non current financial liabilities	(4,180)
Bonds	(1,751)
Finance lease liabilities (medium/long-term)	(246)
Other liabilities	0
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	(246)
Other liabilities	0
Financial payables (short-term):
Amounts due to banks	(1,446)
Financial payables current	(1,446)
Total Financial liabilities (Gross financial debt)	(5,872)
Other financial liabilities (short-term):
Total Financial liabilities (Gross financial debt)	(5,872)
Total	(5,872)
Non cash transaction [member] | Exchange differences on translation [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Amounts due to banks	(86)
Other financial payables	9
Non current financial liabilities	172
Bonds	249
Finance lease liabilities (medium/long-term)	(42)
Other liabilities	0
Noncurrent financial liabilities	(32)
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	(42)
Other liabilities	0
Noncurrent financial liabilities	(32)
Financial payables (short-term):
Total Financial liabilities (Gross financial debt)	98
Other financial liabilities (short-term):
Total Financial liabilities (Gross financial debt)	98
Total	10
Non cash transaction [member] | Fair value adjustments [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Non current financial liabilities	15
Bonds	15
Other liabilities	0
Noncurrent financial liabilities	(190)
Other financial liabilities (medium/long-term):
Other liabilities	0
Noncurrent financial liabilities	(190)
Financial payables (short-term):
Total Financial liabilities (Gross financial debt)	(175)
Other financial liabilities (short-term):
Total Financial liabilities (Gross financial debt)	(175)
Total	(58)
Non cash transaction [member] | Other changes [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Amounts due to banks	23
Other financial payables	(23)
Non current financial liabilities	32
Bonds	1
Convertible Bonds	31
Finance lease liabilities (medium/long-term)	(285)
Other liabilities	0
Noncurrent financial liabilities	(9)
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	(285)
Other liabilities	0
Noncurrent financial liabilities	(9)
Financial payables (short-term):
Other financial payables	(20)
Financial payables current	(20)
Total Financial liabilities (Gross financial debt)	(282)
Other financial liabilities (short-term):
Total Financial liabilities (Gross financial debt)	(282)
Total	(285)
Hedging derivatives [member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	1,423	1,914
Other financial liabilities (medium/long-term):
Hedging derivatives relating to hedged items classified as non-currentassets/liabilities of a financial nature	1,423	1,914
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current assets/liabilities of a financial nature	338	71
Hedging derivatives [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	1,761	1,985
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	1,732	1,755
Hedging derivatives [member] | Non cash transaction [member] | Exchange differences on translation [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	(28)
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	89
Hedging derivatives [member] | Non cash transaction [member] | Fair value adjustments [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	(190)
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	(115)
Hedging derivatives [member] | Non cash transaction [member] | Other changes [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Finance lease liabilities (medium/long-term)	(6)
Other financial liabilities (short-term):
Hedging derivatives relating to hedged items classified as current and non-currentassets/liabilities of a financial nature	3
Non-hedging derivatives [member]
Financial payables (medium/long-term):
Non-hedging derivatives	2	5
Other financial liabilities (medium/long-term):
Non-hedging derivatives	2	5
Other financial liabilities (short-term):
Non-hedging derivatives		4
Non hedging derivatives		4
Non-hedging derivatives [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Non-hedging derivatives	2	9
Other financial liabilities (medium/long-term):
Non-hedging derivatives	2	9
Other financial liabilities (short-term):
Non-hedging derivatives	19	22
Non hedging derivatives	19	€ 22
Non-hedging derivatives [member] | Non cash transaction [member] | Exchange differences on translation [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Non-hedging derivatives	(4)
Other financial liabilities (medium/long-term):
Non-hedging derivatives	(4)
Other financial liabilities (short-term):
Non-hedging derivatives	(1)
Non hedging derivatives	(1)
Non-hedging derivatives [member] | Non cash transaction [member] | Fair value adjustments [member] | Additional cash flow information required by IAS 7 [member]
Other financial liabilities (short-term):
Non-hedging derivatives	(2)
Non hedging derivatives	(2)
Non-hedging derivatives [member] | Non cash transaction [member] | Other changes [member] | Additional cash flow information required by IAS 7 [member]
Financial payables (medium/long-term):
Non-hedging derivatives	(3)
Other financial liabilities (medium/long-term):
Non-hedging derivatives	€ (3)

Financial Liabilities (Non-Cu_4

Financial Liabilities (Non-Current and Current) - Summary of Gross Financial Debt (Detail) € in Millions, $ in Millions	Dec. 31, 2018EUR (€)	Dec. 31, 2018USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)
Disclosure of financial liabilities [line items]
Financial liabilities	€ 30,972		€ 32,864
USD [member]
Disclosure of financial liabilities [line items]
Financial liabilities	5,633	$ 6,450	5,977	$ 7,168
GBP [member]
Disclosure of financial liabilities [line items]
Financial liabilities	1,416	1,267	1,427	1,266
BRL [member]
Disclosure of financial liabilities [line items]
Financial liabilities	588	2,609	1,478	5,863
JPY [member]
Disclosure of financial liabilities [line items]
Financial liabilities	159	$ 20,033	148	$ 20,031
EUR [member]
Disclosure of financial liabilities [line items]
Financial liabilities	€ 23,176		€ 23,834

Financial Liabilities (Non-Cu_5

Financial Liabilities (Non-Current and Current) - Summary of Gross Financial Debt by Effective Interest Rate (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of financial liabilities [line items]
Financial liabilities	€ 30,972	€ 32,864
Total	30,972	32,864
Continuing Operations1[member] | Up to 2.5% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	12,667	13,071
Continuing Operations1[member] | Up to 2.5% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	5,173	5,005
Continuing Operations1[member] | From 2.5% to 5% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	7,881	6,631
Continuing Operations1[member] | From 2.5% to 5% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	10,534	10,571
Continuing Operations1[member] | From 5% to 7.5% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	6,155	7,366
Continuing Operations1[member] | From 5% to 7.5% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	10,130	11,265
Continuing Operations1[member] | From 7.5% to 10% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	1,343	1,849
Continuing Operations1[member] | From 7.5% to 10% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	2,209	2,690
Continuing Operations1[member] | Over 10% [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	443	1,203
Continuing Operations1[member] | Over 10% [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	443	589
Continuing Operations1[member] | Accruals/Deferrals, MTM and Derivative [member] | Derivative Hedging Instruments [member]
Disclosure of financial liabilities [line items]
Financial liabilities	2,483	2,744
Continuing Operations1[member] | Accruals/Deferrals, MTM and Derivative [member] | Non Designated [Member]
Disclosure of financial liabilities [line items]
Financial liabilities	€ 2,483	€ 2,744

Financial Liabilities (Non-Cu_6

Financial Liabilities (Non-Current and Current) - Summary of Maturities of Financial Liabilities (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of financial liabilities [line items]
Current financial liabilities	€ 5,913	€ 4,756
Total	30,972	€ 32,864
Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	21,021
Loans and other financial liabilities	4,391
Finance lease liabilities	1,929
Total	27,341
Current financial liabilities	1,308
Total	28,649
2019 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	2,446
Loans and other financial liabilities	1,293
Finance lease liabilities	190
Total	3,929
Current financial liabilities	1,308
Total	5,237
2020 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	1,267
Loans and other financial liabilities	384
Finance lease liabilities	181
Total	1,832
Total	1,832
2021 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	564
Loans and other financial liabilities	1,343
Finance lease liabilities	172
Total	2,079
Total	2,079
2022 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	3,087
Loans and other financial liabilities	819
Finance lease liabilities	132
Total	4,038
Total	4,038
2023 [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	2,419
Loans and other financial liabilities	331
Finance lease liabilities	130
Total	2,880
Total	2,880
Beyond 5 years [member] | Debt Repayment [member]
Disclosure of financial liabilities [line items]
Bonds	11,238
Loans and other financial liabilities	221
Finance lease liabilities	1,124
Total	12,583
Total	€ 12,583

Financial Liabilities (Non-Cu_7

Financial Liabilities (Non-Current and Current) - Summary of Components of Financial Liabilities (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of financial liabilities [line items]
Non-current portion	€ 16,686	€ 18,119
Current portion	2,912	2,215
Total carrying amount	19,598	20,334
Fair value adjustment and measurement at amortized cost	577	559
Total nominal repayment amount	19,021	19,775
Total nominal repayment amount	754
Convertible bonds payable in Euros Due 2022 [member]
Disclosure of financial liabilities [line items]
Non-current portion	1,893	1,862
Current portion	6	6
Total carrying amount	1,899	1,868
Fair value adjustment and measurement at amortized cost	101	132
Total nominal repayment amount	€ 2,000	€ 2,000

Financial Liabilities (Non-Cu_8

Financial Liabilities (Non-Current and Current) - Additional Information (Detail) € in Millions, ¥ in Millions	Jan. 16, 2018EUR (€)CreditFacility	Dec. 14, 2015EUR (€)	Dec. 31, 2018EUR (€)	Dec. 31, 2017EUR (€)	Dec. 31, 2018JPY (¥)	Jun. 30, 2018EUR (€)	Dec. 31, 2016EUR (€)	Dec. 31, 2015EUR (€)	Jul. 30, 2014
Disclosure of financial liabilities [line items]
Nominal repayment amount of bonds and convertible bonds			€ 21,021	€ 21,775
Increase (decrease) in repayment due to new issue			754
Long term amount due to banks			3,160	3,798
Decrease in long term due to banks			638
Short term amount due to banks			2,385	2,183
Current portion of long term due to banks			1,137
Long term other financial payables			155	161
Short term other financial payables			64	96
Long term other financial payables, current			2
Long term finance lease liabilities			1,740	2,249
Short term finance lease liabilities			208	181
Assets held under finance lease written down			215
Number of revolving credit facility | CreditFacility	2
Revolving credit facility	€ 5,000
Overdraft facilities			€ 286	329			€ 12	€ 441
Telecom Italia Finance S.A. [member]
Disclosure of financial liabilities [line items]
Loans from bank | ¥					¥ 20,000
Maturity period			2029
European investment bank [member]
Disclosure of financial liabilities [line items]
Nominal repayment amount of bonds and convertible bonds			€ 1,350
Direct risk in loan		€ 500	800
Secured loan amount			550
Nominal amount of hedging instrument									550,000,000
Total financial debt of the Group Companies other than TIM out of Group's total financial debt [member] | Top of range [member]
Disclosure of financial liabilities [line items]
Ratio of total financial debt		35.00%
TIM S.p.A. [member]
Disclosure of financial liabilities [line items]
Bilateral Term Loans			1,475
Overdraft facilities			250
Convertible bonds payable in Euros Due 2022 [member]
Disclosure of financial liabilities [line items]
Unsecured equity-linked bond of convertible bonds			€ 2,000
Coupon rate			1.125%
Increase (decrease) in repayment due to new issue			€ 2,000	2,000
Hedging derivatives [member]
Disclosure of financial liabilities [line items]
Non-current derivative liabilities			1,423	1,914
Current derivative liabilities			€ 338	71
Non-hedging derivatives [member]
Disclosure of financial liabilities [line items]
Non-current derivative liabilities				5		€ 2
Current derivative liabilities				€ 4		€ 0

Financial Liabilities (Non-Cu_9

Financial Liabilities (Non-Current and Current) - Summary of Bonds Issued (Detail) € in Millions, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)	Dec. 31, 2018USD ($)	Dec. 31, 2018GBP (£)	Dec. 31, 2017EUR (€)
Disclosure of financial liabilities [line items]
Amount	€ 19,021			€ 19,775
Nominal repayment amount	21,021			€ 21,775
Market value	20,894
TIM S.p.A [member]
Disclosure of financial liabilities [line items]
Nominal repayment amount	15,849
Market value	15,690
TIM S.p.A [member] | Bonds with 5.375% interest maturing January 29, 2019 [member]
Disclosure of financial liabilities [line items]
Amount	832.4
Nominal repayment amount	€ 832.4
Coupon	5.375%
Issue date	Jan. 29, 2004
Maturity date	Jan. 29, 2019
Issue price	99.07%
Market price	100.486%
Market value	€ 836
TIM S.p.A [member] | Bonds with 6.375% interest maturing June 24, 2019 [member]
Disclosure of financial liabilities [line items]
Amount | £			£ 850
Nominal repayment amount	€ 950.2
Coupon	6.375%
Issue date	Jun. 24, 2004
Maturity date	Jun. 24, 2019
Issue price	98.85%
Market price	101.761%
Market value	€ 967
TIM S.p.A [member] | Bonds with 4.000% interest maturing January 21, 2020 [member]
Disclosure of financial liabilities [line items]
Amount	719.4
Nominal repayment amount	€ 719.4
Coupon	4.00%
Issue date	Dec. 21, 2012
Maturity date	Jan. 21, 2020
Issue price	99.184%
Market price	103.331%
Market value	€ 743
TIM S.p.A [member] | Bonds with 4.875% interest maturing September 25, 2020 [member]
Disclosure of financial liabilities [line items]
Amount	547.5
Nominal repayment amount	€ 547.5
Coupon	4.875%
Issue date	Sep. 25, 2013
Maturity date	Sep. 25, 2020
Issue price	98.966%
Market price	106.29%
Market value	€ 582
TIM S.p.A [member] | Bonds with 4.500% interest maturing January 25, 2021 [member]
Disclosure of financial liabilities [line items]
Amount	563.6
Nominal repayment amount	€ 563.6
Coupon	4.50%
Issue date	Jan. 23, 2014
Maturity date	Jan. 25, 2021
Issue price	99.447%
Market price	105.849%
Market value	€ 597
TIM S.p.A [member] | Bonds with 6 Month Euribor interest maturing January 1, 2022 [member]
Disclosure of financial liabilities [line items]
Amount	202.7
Nominal repayment amount	€ 202.7
Coupon	365.00%
Issue date	Jan. 1, 2002
Maturity date	Jan. 1, 2022
Issue price	100.00%
Market price	100.00%
Market value	€ 203
TIM S.p.A [member] | Bonds with 5.250% interest maturing February 10, 2022 [member]
Disclosure of financial liabilities [line items]
Amount	883.9
Nominal repayment amount	€ 883.9
Coupon	5.25%
Issue date	Oct. 2, 2010
Maturity date	Feb. 10, 2022
Issue price	99.295%
Market price	108.43%
Market value	€ 958
TIM S.p.A [member] | Bonds with 1.125% interest maturing March 26, 2022 [member]
Disclosure of financial liabilities [line items]
Amount	2,000
Nominal repayment amount	€ 2,000
Coupon	1.125%
Issue date	Mar. 26, 2015
Maturity date	Mar. 26, 2022
Issue price	100.00%
Market price	99.934%
Market value	€ 1,879
TIM S.p.A [member] | Bonds with 5.875% interest maturing May 19, 2023 [member]
Disclosure of financial liabilities [line items]
Amount | £			£ 375
Nominal repayment amount	€ 419.2
Coupon	5.875%
Issue date	May 19, 2006
Maturity date	May 19, 2023
Issue price	99.622%
Market price	104518.00%
Market value	€ 438
TIM S.p.A [member] | Bonds with 3.250% interest maturing January 16, 2023 [member]
Disclosure of financial liabilities [line items]
Amount	1,000
Nominal repayment amount	€ 1,000
Coupon	3.25%
Issue date	Jan. 16, 2015
Maturity date	Jan. 16, 2023
Issue price	99.446%
Market price	102.01%
Market value	€ 1,020
TIM S.p.A [member] | Bonds with 2.500% interest maturing July 19, 2023 [member]
Disclosure of financial liabilities [line items]
Amount	1,000
Nominal repayment amount	€ 1,000
Coupon	2.50%
Issue date	Jan. 19, 2017
Maturity date	Jul. 19, 2023
Issue price	99.288%
Market price	98.417%
Market value	€ 984
TIM S.p.A [member] | Bonds with 3.625% interest maturing January 19, 2024 [member]
Disclosure of financial liabilities [line items]
Amount	750
Nominal repayment amount	€ 750
Coupon	3.625%
Issue date	Jan. 20, 2016
Maturity date	Jan. 19, 2024
Issue price	99.632%
Market price	103.328%
Market value	€ 775
TIM S.p.A [member] | Bonds with 5.303% interest maturing May 30, 2024 [member]
Disclosure of financial liabilities [line items]
Amount | $		$ 1,500
Nominal repayment amount	€ 1,310
Coupon	5.303%
Issue date	May 30, 2014
Maturity date	May 30, 2024
Issue price	100.00%
Market price	95.53%
Market value	€ 1,251
TIM S.p.A [member] | Bonds with 3.000% interest maturing September 30, 2025 [member]
Disclosure of financial liabilities [line items]
Amount	1,000
Nominal repayment amount	€ 1,000
Coupon	3.00%
Issue date	Sep. 30, 2016
Maturity date	9/30/25
Issue price	99.806%
Market price	97.468%
Market value	€ 975
TIM S.p.A [member] | Bonds with 2.875% interest maturing January 28, 2026 [member]
Disclosure of financial liabilities [line items]
Amount	750
Nominal repayment amount	€ 750
Coupon	2.875%
Issue date	Jun. 28, 2018
Maturity date	Jan. 28, 2026
Issue price	100.00%
Market price	95.218%
Market value	€ 714
TIM S.p.A [member] | Bonds with 3.625% interest maturing May 25, 2026 [member]
Disclosure of financial liabilities [line items]
Amount	1,000
Nominal repayment amount	€ 1,000
Coupon	3.625%
Issue date	May 25, 2016
Maturity date	May 25, 2026
Issue price	100.00%
Market price	99.952%
Market value	€ 1,000
TIM S.p.A [member] | Bonds with 2.375% interest maturing October 12, 2027 [member]
Disclosure of financial liabilities [line items]
Amount	1,250
Nominal repayment amount	€ 1,250
Coupon	2.375%
Issue date	Oct. 12, 2017
Maturity date	Oct. 12, 2027
Issue price	99.185%
Market price	89.357%
Market value	€ 1,117
TIM S.p.A [member] | Bonds with 5.250% interest maturing March 17, 2055 [member]
Disclosure of financial liabilities [line items]
Amount	670
Nominal repayment amount	€ 670
Coupon	5.25%
Issue date	Mar. 17, 2005
Maturity date	Mar. 17, 2055
Issue price	99.667%
Market price	97.104%
Market value	€ 651
Telecom Italia Finance S.A. [member]
Disclosure of financial liabilities [line items]
Nominal repayment amount	1,015
Market value	1,273
Telecom Italia Finance S.A. [member] | Bonds with 7.750% interest maturing January 24, 2033 [member]
Disclosure of financial liabilities [line items]
Amount	1,015
Nominal repayment amount	€ 1,015
Coupon	7.75%
Issue date	Jan. 24, 2003
Maturity date	Jan. 24, 2033
Issue price	109.646%
Market price	125.429%
Market value	€ 1,273
Telecom Italia Capital S.A. [member]
Disclosure of financial liabilities [line items]
Nominal repayment amount	4,157
Market value	3,931
Telecom Italia Capital S.A. [member] | Bonds with 7.175% interest maturing June 18, 2019 [member]
Disclosure of financial liabilities [line items]
Amount | $		759.7
Nominal repayment amount	€ 663.4
Coupon	7.175%
Issue date	Jun. 18, 2009
Maturity date	Jun. 18, 2019
Issue price	100.00%
Market price	101.358%
Market value	€ 672
Telecom Italia Capital S.A. [member] | Bonds with 6.375% interest maturing November 15, 2033 [member]
Disclosure of financial liabilities [line items]
Amount | $		1,000
Nominal repayment amount	€ 873.4
Coupon	6.375%
Issue date	Oct. 29, 2003
Maturity date	Nov. 15, 2033
Issue price	99.558%
Market price	90.113%
Market value	€ 787
Telecom Italia Capital S.A. [member] | Bonds with 6.000% interest maturing September 30, 2034 [member]
Disclosure of financial liabilities [line items]
Amount | $		1,000
Nominal repayment amount	€ 873.4
Coupon	6.00%
Issue date	Oct. 6, 2004
Maturity date	Sep. 30, 2034
Issue price	99.081%
Market price	87.489%
Market value	€ 764
Telecom Italia Capital S.A. [member] | Bonds with 7.200% interest maturing July 18, 2036 [member]
Disclosure of financial liabilities [line items]
Amount | $		1,000
Nominal repayment amount	€ 873.4
Coupon	7.20%
Issue date	Jul. 18, 2006
Maturity date	Jul. 18, 2036
Issue price	99.44%
Market price	96.061%
Market value	€ 839
Telecom Italia Capital S.A. [member] | Bonds with 7.721% interest maturing June 04, 2038 [member]
Disclosure of financial liabilities [line items]
Amount | $		$ 1,000
Nominal repayment amount	€ 873.4
Coupon	7.721%
Issue date	Jun. 4, 2008
Maturity date	Jun. 4, 2038
Issue price	100.00%
Market price	99.471%
Market value	€ 869

Financial Liabilities (Non-C_10

Financial Liabilities (Non-Current and Current) - Summary of Changes in Bonds (Detail) - Telecom Italia S.p.A. [member] € in Millions, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2018EUR (€)	Dec. 31, 2018USD ($)
Disclosure of detailed information about borrowings [line items]
Bonds buybacks value		€ 157
Bonds with 2.875% interest maturing January 28, 2026 [member]
Disclosure of detailed information about borrowings [line items]
Currency		Euro
Amount		€ 750
Issue date		Jun. 28, 2018
Bonds interest rate		2.875%	2.875%
Bonds with 4.750% interest [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate		4.75%	4.75%
Currency	Euro
Amount		€ 593
Repayment date		May 25, 2018
Bonds with 6.999% interest [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate		6.999%	6.999%
Currency		USD
Amount | $			$ 677
Repayment date		Apr. 6, 2018
Bonds with 6.125% interest [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate		6.125%	6.125%
Currency	Euro
Amount		€ 582
Repayment date		Dec. 14, 2018

Financial Liabilities (Non-C_11

Financial Liabilities (Non-Current and Current) - Summary of Changes in Bonds (Parenthetical) (Detail) - 12 months ended Dec. 31, 2018 € in Millions, $ in Millions	EUR (€)	USD ($)
Telecom Italia S.p.A. [member]
Disclosure of detailed information about borrowings [line items]
Bonds buybacks value | €	€ 157
Bonds with 2.875% interest maturing January 28, 2026 [member] | Telecom Italia S.p.A. [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	2.875%	2.875%
Bonds maturity date	Jan. 28, 2026	Jan. 28, 2026
Bonds with 4.750% interest [member] | Telecom Italia S.p.A. [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	4.75%	4.75%
Bonds with 6.999% interest [member] | Telecom Italia S.p.A. [member]
Disclosure of detailed information about borrowings [line items]
Bonds interest rate	6.999%	6.999%
Bonds with 6.999% interest [member] | Telecom Italia Capital S.A. [member]
Disclosure of detailed information about borrowings [line items]
Bonds buybacks value | $		$ 323

Financial Liabilities (Non-C_12

Financial Liabilities (Non-Current and Current) - Summary of Composition and Drawdown of Committed Credit Lines Available (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Detailed Information About Line Of Credit [line items]
Revolving Credit Facility	€ 5,000	€ 7,000
Revolving credit facility-expiring May 2019 [member]
Disclosure Of Detailed Information About Line Of Credit [line items]
Revolving Credit Facility		4,000
Revolving credit facility-expiring March 2020 [member]
Disclosure Of Detailed Information About Line Of Credit [line items]
Revolving Credit Facility		€ 3,000
Revolving credit facility expiring January 2023 [member]
Disclosure Of Detailed Information About Line Of Credit [line items]
Revolving Credit Facility	€ 5,000

Financial Liabilities (Non-C_13

Financial Liabilities (Non-Current and Current) - Summary of Three Rating Agencies-standard & Poor's, Moody's and Fitch Ratings-rated Tim (Detail)	6 Months Ended
	Jun. 30, 2018
STANDARD & POOR'S [member]
Disclosure Of Detailed Information About Line Of Credit [line items]
Rated credit exposures	BB+
Credit rating status	Stable
MOODY'S [member]
Disclosure Of Detailed Information About Line Of Credit [line items]
Rated credit exposures	Ba1
Credit rating status	Stable
FITCH RATINGS [member]
Disclosure Of Detailed Information About Line Of Credit [line items]
Rated credit exposures	BBB-
Credit rating status	Negative

Financial Liabilities (Non-C_14

Financial Liabilities (Non-Current and Current) - Summary of Additional Cash Flow Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Interest expense paid	€ (1,978)	€ (2,899)	€ (2,306)
Interest income received	871	1,636	€ 934
Net total	(1,107)	(1,263)
Cross currency and interest rate swaps (CCIRS) [member] | Interest flows in and out, net [member]
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Interest expense paid	(1,485)	(2,304)
Interest income received	378	1,041
Net total	€ (1,107)	€ (1,263)

Financial Risk Management - Add

Financial Risk Management - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of risk management strategy related to hedge accounting [line items]
Finance expenses, before the income tax effect	€ 2,404	€ 3,303	€ 3,450
Interest Rate Risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Description of interest rates in various markets, basis points	If at December 31, 2018 the interest rates in the various markets in which the TIM Group operates had been 100 basis points higher/lower compared to the actual rates, then higher/lower finance expenses, before the income tax effect, would have been recognized in the income statement of 63 million euros (50 million euros at December 31, 2017).
Finance expenses, before the income tax effect	€ 63	€ 50
Liquidity risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Gross financial debt percentage	18.00%
Financial debt nominal repayment	Next 12 months
Financial liabilities repayment term	Next 24 months
Bottom of range [member] | Liquidity risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Refinancing requirements term on irrevocable bank lines and liquidity	Refinancing requirements at least for the next 12 months with irrevocable bank lines and liquidity
Bottom of range [member] | Fixed interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities	65.00%
Bottom of range [member] | Floating interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities	25.00%
Top of range [member] | Credit risk [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Deposits	Less than three months
Top of range [member] | Fixed interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities		75.00%
Top of range [member] | Floating interest rate [member]
Disclosure of risk management strategy related to hedge accounting [line items]
Percentage of nominal amount on medium long-term non-current financial liabilities		35.00%

Financial Risk Management - Sum

Financial Risk Management - Summary of Total Financial Liabilities at Nominal Repayment Amount (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of financial liabilities [line items]
Bonds	€ 19,021	€ 19,775
Total current financial liabilities	5,913	4,756
Total	30,972	32,864
Nominal Repayment Amount [member]
Disclosure of financial liabilities [line items]
Bonds	21,021	21,775
Loans and other financial liabilities	6,320	7,570
Total	27,341	29,345
Total current financial liabilities	1,308	982
Total	28,649	30,327
Fixed interest rate [member] | Nominal Repayment Amount [member]
Disclosure of financial liabilities [line items]
Bonds	16,484	17,237
Loans and other financial liabilities	2,820	3,689
Total	19,304	20,926
Total current financial liabilities	857	282
Total	20,161	21,208
Floating interest rate [member] | Nominal Repayment Amount [member]
Disclosure of financial liabilities [line items]
Bonds	4,537	4,538
Loans and other financial liabilities	3,500	3,881
Total	8,037	8,419
Total current financial liabilities	451	700
Total	€ 8,488	€ 9,119

Financial Risk Management - S_2

Financial Risk Management - Summary of Total Financial Liabilities at Nominal Repayment Amount (Parenthetical) (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of financial liabilities [line items]
Current financial liabilities	€ 12,881	€ 12,388
Variable rate [member]
Disclosure of financial liabilities [line items]
Current financial liabilities		€ 38

Financial Risk Management - S_3

Financial Risk Management - Summary of Total Financial Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of financial assets [line items]
Cash and cash equivalents	€ 1,917	€ 3,575	€ 3,964	€ 3,559
Other receivables	424	645
Total	4,977	6,773
Adjusted carrying amount	€ 3,228	€ 4,979
Effective interest rate	1.54%	1.57%
Cash and cash equivalents [member]
Disclosure of financial assets [line items]
Cash and cash equivalents	€ 1,695	€ 2,930
Adjusted carrying amount	€ 1,695	€ 2,930
Effective interest rate	0.12%	0.05%
Securities other than investments [member]
Disclosure of financial assets [line items]
Securities	€ 1,351	€ 1,723
Adjusted carrying amount	€ 1,351	€ 1,723
Effective interest rate	3.13%	4.07%
Other receivables [member]
Disclosure of financial assets [line items]
Other receivables	€ 950	€ 1,006
Adjusted carrying amount	€ 182	€ 326
Effective interest rate	2.96%	2.03%
Nominal Investment Amount [member]
Disclosure of financial assets [line items]
Total	€ 3,996	€ 5,659
Fixed interest rate [member] | Securities other than investments [member]
Disclosure of financial assets [line items]
Securities	950	623
Fixed interest rate [member] | Other receivables [member]
Disclosure of financial assets [line items]
Other receivables	879	927
Fixed interest rate [member] | Nominal Investment Amount [member]
Disclosure of financial assets [line items]
Total	1,829	1,550
Floating interest rate [member] | Cash and cash equivalents [member]
Disclosure of financial assets [line items]
Cash and cash equivalents	1,695	2,930
Floating interest rate [member] | Securities other than investments [member]
Disclosure of financial assets [line items]
Securities	401	1,100
Floating interest rate [member] | Other receivables [member]
Disclosure of financial assets [line items]
Other receivables	71	79
Floating interest rate [member] | Nominal Investment Amount [member]
Disclosure of financial assets [line items]
Total	€ 2,167	€ 4,109

Financial Risk Management - S_4

Financial Risk Management - Summary of Total Financial Liabilities (Detail) - EUR (€) pure in Thousands, € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of financial liabilities [line items]
Adjusted carrying amount	€ 28,489	€ 30,120
Effective interest rate	434000.00%	457000.00%
Bonds [member]
Disclosure of financial liabilities [line items]
Adjusted carrying amount	€ 20,808	€ 21,521
Effective interest rate	483000.00%	496000.00%
Loans and other financial liabilities member [member]
Disclosure of financial liabilities [line items]
Adjusted carrying amount	€ 7,681	€ 8,599
Effective interest rate	302000.00%	359000.00%

Financial Risk Management - S_5

Financial Risk Management - Summary of Financial liabilities-Maturities of Contractually Expected Disbursements (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	€ 25,059	€ 28,108
Total financial liabilities, Principal	28,649
Financial liabilities, interest	9,061
Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	27,341
Financial liabilities, interest	9,058
Current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Current financial liabilities, principal	1,308
Financial liabilities, interest	3
Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	21,021
Financial liabilities, interest	9,079
Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	4,391
Financial liabilities, interest	(1,167)
Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,929
Financial liabilities, interest	1,146
Later than six months and not later than one year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Total financial liabilities, Principal	5,237
Financial liabilities, interest	1,013
Later than six months and not later than one year [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	3,929
Financial liabilities, interest	1,010
Later than six months and not later than one year [member] | Current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Current financial liabilities, principal	1,308
Financial liabilities, interest	3
Later than six months and not later than one year [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	2,446
Financial liabilities, interest	927
Later than six months and not later than one year [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,293
Financial liabilities, interest	(52)
Later than six months and not later than one year [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	190
Financial liabilities, interest	135
2020 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Total financial liabilities, Principal	1,832
Financial liabilities, interest	870
2020 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,832
Financial liabilities, interest	870
2020 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,267
Financial liabilities, interest	799
2020 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	384
Financial liabilities, interest	(55)
2020 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	181
Financial liabilities, interest	126
2021 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Total financial liabilities, Principal	2,079
Financial liabilities, interest	788
2021 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	2,079
Financial liabilities, interest	788
2021 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	564
Financial liabilities, interest	743
2021 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,343
Financial liabilities, interest	(71)
2021 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	172
Financial liabilities, interest	116
2022 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Total financial liabilities, Principal	4,038
Financial liabilities, interest	729
2022 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	4,038
Financial liabilities, interest	729
2022 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	3,087
Financial liabilities, interest	706
2022 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	819
Financial liabilities, interest	(85)
2022 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	132
Financial liabilities, interest	108
2023 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Total financial liabilities, Principal	2,880
Financial liabilities, interest	653
2023 [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	2,880
Financial liabilities, interest	653
2023 [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	2,419
Financial liabilities, interest	649
2023 [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	331
Financial liabilities, interest	(96)
2023 [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	130
Financial liabilities, interest	100
Beyond 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Total financial liabilities, Principal	12,583
Financial liabilities, interest	5,008
Beyond 5 years [member] | Non-current financial liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	12,583
Financial liabilities, interest	5,008
Beyond 5 years [member] | Bonds [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	11,238
Financial liabilities, interest	5,255
Beyond 5 years [member] | Loans and other financial liabilities member [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	221
Financial liabilities, interest	(808)
Beyond 5 years [member] | Finance lease liabilities [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Non-current financial liabilities Principal	1,124
Financial liabilities, interest	€ 561

Financial Risk Management - S_6

Financial Risk Management - Summary of Derivatives on Financial Liabilities-Contractually Expected Interest Flows (Detail) € in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	€ (9,061)
Total net (receipts) disbursements	(1,527)
Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	3,874
Receipts	(5,498)
Derivatives-net (receipts) disbursements	(1,624)
Non-hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	132
Receipts	(35)
Derivatives-net (receipts) disbursements	97
Later than six months and not later than one year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(1,013)
Total net (receipts) disbursements	(122)
Later than six months and not later than one year [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	350
Receipts	(499)
Derivatives-net (receipts) disbursements	(149)
Later than six months and not later than one year [member] | Non-hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	39
Receipts	(12)
Derivatives-net (receipts) disbursements	27
2020 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(870)
Total net (receipts) disbursements	(106)
2020 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	298
Receipts	(424)
Derivatives-net (receipts) disbursements	(126)
2020 [member] | Non-hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	27
Receipts	(7)
Derivatives-net (receipts) disbursements	20
2021 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(788)
Total net (receipts) disbursements	(113)
2021 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	297
Receipts	(424)
Derivatives-net (receipts) disbursements	(127)
2021 [member] | Non-hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	18
Receipts	(4)
Derivatives-net (receipts) disbursements	14
2022 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(729)
Total net (receipts) disbursements	(115)
2022 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	297
Receipts	(424)
Derivatives-net (receipts) disbursements	(127)
2022 [member] | Non-hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	16
Receipts	(4)
Derivatives-net (receipts) disbursements	12
2023 [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(653)
Total net (receipts) disbursements	(118)
2023 [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	289
Receipts	(414)
Derivatives-net (receipts) disbursements	(125)
2023 [member] | Non-hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	9
Receipts	(2)
Derivatives-net (receipts) disbursements	7
Beyond 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivatives-net (receipts) disbursements	(5,008)
Total net (receipts) disbursements	(953)
Beyond 5 years [member] | Hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	2,343
Receipts	(3,313)
Derivatives-net (receipts) disbursements	(970)
Beyond 5 years [member] | Non-hedging derivatives [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Disbursements	23
Receipts	(6)
Derivatives-net (receipts) disbursements	€ 17

Derivatives - Schedule of Deriv

Derivatives - Schedule of Derivative Financial Instrument By Type (Detail) € in Millions, pure in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)	Dec. 31, 2017EUR (€)
Derivative Financial Instruments [line items]
Notional amount	€ 16,353	€ 16,964
Spot Mark-to-Market (Clean Price)	(114)	(308)
Reclassification to P&L	€ (2)
Derivatives spot value [member]
Derivative Financial Instruments [line items]
Nominal value	11,796
Carrying amount	€ (183)
Change in fair value for the year	142
Accruals [member]
Derivative Financial Instruments [line items]
Carrying amount	81
Derivatives [member]
Derivative Financial Instruments [line items]
Carrying amount	(102)
Underlying instruments [member]
Derivative Financial Instruments [line items]
Change in cumulative fair value	(18)
Gain losses on equity reserves [member]
Derivative Financial Instruments [line items]
Change in fair value for the year	20
Change in derivatives [member]
Derivative Financial Instruments [line items]
Change in cumulative fair value	28
Hedge ineffectiveness [member]
Derivative Financial Instruments [line items]
Change in cumulative fair value	10
Reserve for hedging instruments [member] | Equity reserve balance [member]
Derivative Financial Instruments [line items]
Carrying amount	(720)
Reserve for hedging instruments [member] | Fair value adjustment for hedging settled in advance [member]
Derivative Financial Instruments [line items]
Carrying amount	€ (6)
Interest rate risk [member]
Derivative Financial Instruments [line items]
Nominal value	4,992
Carrying amount	€ 182
Change in fair value for the year	(165)
Interest rate risk [member] | Derivative Assets [member]
Derivative Financial Instruments [line items]
Carrying amount	923
Change in fair value for the year	(180)
Interest rate risk [member] | Derivative liabilities [member]
Derivative Financial Instruments [line items]
Carrying amount	(741)
Change in fair value for the year	€ 15
Cross currency and interest rate swaps (CCIRS) [member]
Derivative Financial Instruments [line items]
Nominal value	6,804
Carrying amount	€ (365)
Change in fair value for the year	307
Cross currency and interest rate swaps (CCIRS) [member] | Derivative Assets [member]
Derivative Financial Instruments [line items]
Carrying amount	590
Change in fair value for the year	122
Cross currency and interest rate swaps (CCIRS) [member] | Derivative liabilities [member]
Derivative Financial Instruments [line items]
Carrying amount	(955)
Change in fair value for the year	185
Fair value hedges [member]
Derivative Financial Instruments [line items]
Notional amount	4,334	4,334
Spot Mark-to-Market (Clean Price)	€ 52	2
Fair value hedges [member] | Derivatives spot value [member]
Derivative Financial Instruments [line items]
Nominal value	4,334
Carrying amount	€ 52
Change in fair value for the year	50
Fair value hedges [member] | Accruals [member]
Derivative Financial Instruments [line items]
Carrying amount	21
Fair value hedges [member] | Derivatives [member]
Derivative Financial Instruments [line items]
Carrying amount	€ 73
Fair value hedges [member] | Underlying instruments [member]
Derivative Financial Instruments [line items]
Nominal value	4,334
Carrying amount	€ (4,368)
Fair value hedges [member] | Fair value adjustment and measurements at amortized cost [member]
Derivative Financial Instruments [line items]
Carrying amount	(58)
Change in fair value for the year	(53)
Fair value hedges [member] | Hedge ineffectiveness [member]
Derivative Financial Instruments [line items]
Change in fair value for the year	(3)
Fair value hedges [member] | Fair value adjustment for hedging settled in advance [member]
Derivative Financial Instruments [line items]
Carrying amount	(157)
Fair value hedges [member] | Interest rate risk [member]
Derivative Financial Instruments [line items]
Notional amount	4,334	4,334
Spot Mark-to-Market (Clean Price)	€ 52	2
Nominal value	4,334
Carrying amount	€ 52
Change in fair value for the year	50
Fair value hedges [member] | Interest rate risk [member] | Derivative Assets [member]
Derivative Financial Instruments [line items]
Carrying amount	52
Cash flow hedges [member]
Derivative Financial Instruments [line items]
Notional amount	11,796	12,417
Spot Mark-to-Market (Clean Price)	(183)	(325)
Cash flow hedges [member] | Interest rate risk [member]
Derivative Financial Instruments [line items]
Notional amount	4,992	5,178
Spot Mark-to-Market (Clean Price)	182	346
Cash flow hedges [member] | Cross currency and interest rate swaps (CCIRS) [member]
Derivative Financial Instruments [line items]
Notional amount	6,804	7,239
Spot Mark-to-Market (Clean Price)	(365)	(672)
Non Hedge Accounting Derivatives [member]
Derivative Financial Instruments [line items]
Notional amount	223	213
Spot Mark-to-Market (Clean Price)	€ 17	€ 15

Derivatives - Additional Inform

Derivatives - Additional Information (Detail) € in Millions	Dec. 31, 2018EUR (€)
Disclosure of reserves within equity [abstract]
Change in the equity reserve attributable to the effective hedging component	€ 26

Derivatives - Summary of change

Derivatives - Summary of change in the equity reserve attributable to the effective hedging component (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of reserves within equity [line items]
Hedging instrument gains / losses	€ 114	€ 132	€ 114
Change in equity reserves attributable to derivative instruments ending balance	26
Cash flow hedges [member]
Disclosure of reserves within equity [line items]
Change in equity reserves attributable to derivative instruments ending balance	26
Cash flow hedges [member] | Effective fair value derivatives [member]
Disclosure of reserves within equity [line items]
Change in equity reserves attributable to derivative instruments beginning balance	(746)
Change in equity reserves attributable to derivative instruments ending balance	(720)	€ (746)
Cash flow hedges [member] | Changes in C V A and D V A [member]
Disclosure of reserves within equity [line items]
Hedging instrument gains / losses	20
Cash flow hedges [member] | Reversal for ineffectiveness two thousand seventeen [member]
Disclosure of reserves within equity [line items]
Hedging instrument gains / losses	8
Cash flow hedges [member] | Amortization in profit and loss fair value of hedging settled in advance [member]
Disclosure of reserves within equity [line items]
Reversal from reclassification	(5)
Cash flow hedges [member] | Other [member]
Disclosure of reserves within equity [line items]
Reversal for the fair value adjustment of hedging settled in advance	2
Cash flow hedges [member] | Net change in equity reserve [member]
Disclosure of reserves within equity [line items]
Other	€ 1

Derivatives - Schedule of Trans

Derivatives - Schedule of Transactions hedged by Cash Flow Hedges (Detail) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017EUR (€)	Dec. 31, 2018EUR (€)	Dec. 31, 2018USD ($)
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 16,964	€ 16,353
GBP [member] | Derivative Instrument at 6.375% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 850
Start of period	Jan-19
End of period	Jun-19
Rate applied	6.375%
Interest period	Annually
Notional hedging	€ 1,214
Foreign exchange hedging rate	0.05311
GBP [member] | Derivative Instrument at 5.875% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 375
Start of period	Jan-19
End of period	May-23
Rate applied	5.875%
Interest period	Annually
Notional hedging	€ 552
Foreign exchange hedging rate	0.05535
JPY [member] | Derivative instrument at 5.000% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 20,000
Start of period	Jan-19
End of period	Oct-29
Rate applied	5.00%
Interest period	Semiannually
Notional hedging	€ 174
Foreign exchange hedging rate	0.05940
JPY [member] | Derivative instrument at 0.750% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 20,000		$ 187.6
Start of period	Jan-19
End of period	Oct-29
Rate applied	0.75%
Interest period	Semiannually
Notional hedging	€ 138
Foreign exchange hedging rate	0.00696
USD [member] | Derivative instrument at 6.375% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-19
End of period	Nov-33
Rate applied	6.375%
Interest period	Semiannually
Notional hedging	€ 849
Foreign exchange hedging rate	0.05994
USD [member] | Derivative instrument at 5.303% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,500
Start of period	Jan-19
End of period	May-24
Rate applied	5.303%
Interest period	Semiannually
Notional hedging	€ 1,099
Foreign exchange hedging rate	0.04226
USD [member] | Derivative Instrument at 6% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 760
Start of period	Jan-19
End of period	Jun-19
Rate applied	7.175%
Interest period	Semiannually
Notional hedging	€ 549
Foreign exchange hedging rate	0.06689
USD [member] | Derivative Instrument at 5.303% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-19
End of period	Sept-34
Rate applied	6.00%
Interest period	Semiannually
Notional hedging	€ 794
Foreign exchange hedging rate	0.04332
USD [member] | Derivative instrument at 7.200% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-19
End of period	July-36
Rate applied	7.20%
Interest period	Semiannually
Notional hedging	€ 791
Foreign exchange hedging rate	0.05884
USD [member] | Derivative instrument at 7.720% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 1,000
Start of period	Jan-19
End of period	Jun-38
Rate applied	7.721%
Interest period	Semiannually
Notional hedging	€ 645
Foreign exchange hedging rate	0.07470

Derivatives - Schedule of Tra_2

Derivatives - Schedule of Transactions hedged by Cash Flow Hedges (Parenthetical) (Detail) € in Millions, $ in Millions	Dec. 31, 2018EUR (€)	Dec. 31, 2018USD ($)	Dec. 31, 2017EUR (€)
Derivative Financial Instruments [line items]
Notional amount in currency of denomination	€ 16,353		€ 16,964
JPY [member] | Derivative instrument at 0.750% [member]
Derivative Financial Instruments [line items]
Notional amount in currency of denomination		$ 187.6	€ 20,000

Supplementary Disclosures on _3

Supplementary Disclosures on Financial Instruments - Carrying Amount and Fair Value Hierarchy for Each Category/Class of Financial Asset/Liability (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about financial instruments [line items]
Financial receivables for lease contracts	€ 124
Non-current assets
Non-currentassets	54		€ 69
Current Assets	70		45
Total	4,977		6,773
Current liabilities
Contract Liabilities	931	€ 920
Current liabilities
Hedging derivatives	28,649
Current liabilities
Non-current liabilities	1,740		2,249
Current liabilities	208		181
Total	30,972		32,864
Assets
Financial assets measured at ammortized cost	0		0
Loans and receivables			7,914
Non-currentassets
Receivables from employees	43		47
Other financial receivables			150
Other investments	945
Current Assets
Receivables from employees	14		16
Other short-term financial receivables	2		1
Securities other than investments available for sale			993
Cash and cash equivalents	1,917		3,575	€ 3,964	€ 3,559
Financial assets measured at fair value through other comprehensive income	945
Current Assets
Financial receivables for lease contracts	124
Level 1 [member]
Non-current assets
Total	1,129		996
Level 2 [member]
Non-current assets
Total	1,767		1,797
Current liabilities
Total	1,763		1,994
Level 3 of fair value hierarchy [member]
Non-current assets
Total	30
IAS 17 section finance lease receivables [member]
Disclosure of detailed information about financial instruments [line items]
Financial receivables for lease contracts			114
Non-current assets
Non-currentassets			69
Current Assets			45
Total	124		114
Current liabilities
Finance lease liabilities	1,948		2,430
Non-current liabilities	1,740		2,249
Current liabilities	208		181
Total	1,948		2,430
Current Assets
Financial receivables for lease contracts			114
Fair value [member]
Disclosure of detailed information about financial instruments [line items]
Financial receivables for lease contracts	124		114
Non-current assets
Total	8,850		10,849
Liabilities
Financial liabilities measured at ammortized cost	32,123
Financial liabilities measured at ammortized cost			36,023
Current liabilities
Financial liabilities at fair value through profit or loss held for trading			9
Financial liabilities measured at fair value through profit or loss	2
Current liabilities
Finance lease liabilities	3,359		3,604
Total	37,245		41,621
Assets
Financial assets measured at ammortized cost	5,800
Current Assets
Available-for-sale financial assets			1,044
Financial assets at fair value through profit or loss held for trading			22
Financial assets measured at fair value through other comprehensive income	994
Current Assets
Financial assets measured at fair value through profit or loss	200
Current Assets
Financial receivables for lease contracts	124		114
Financial assets at fair value through equity category [member]
Non-current assets
Total	2,653		2,729
Current Assets
Available-for-sale financial assets			28
Financial assets at fair value through profit or loss, category [member]
Non-current assets
Total	273		64
Current Assets
Available-for-sale financial assets			1,016
Financial assets at fair value through profit or loss held for trading			22
Financial assets measured at fair value through other comprehensive income	994
Current Assets
Financial assets measured at fair value through profit or loss	200
Financial liabilities at amortised cost, category [member]
Liabilities
Financial liabilities measured at ammortized cost	32,064
Financial liabilities measured at ammortized cost			33,355
Non-current liabilities
Financial payables	21,894		23,940
Current liabilities
Financial payables	5,367		4,500
Trade and miscellaneous payables and other current liabilities	4,610		4,915
Contract Liabilities	193
Current liabilities
Total	32,064		33,355
Financial liabilities at fair value through equity category [member]
Current liabilities
Total	1,761		1,966
Financial liabilities at fair value through profit or loss, category [member]
Current liabilities
Financial liabilities at fair value through profit or loss held for trading			9
Financial liabilities measured at fair value through profit or loss	2
Current liabilities
Total	2		28
Non-hedging derivatives [member]
Non-current liabilities
Non-hedging derivatives	2		5
Current liabilities
Non-hedging derivatives			4
Non-hedging derivatives [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Non-hedging derivatives			15
Hedging derivatives	12
Hedging derivatives	7
Non-hedging derivatives			7
Non-current liabilities
Non-current liabilities	2
Non-hedging derivatives			5
Current liabilities
Non-hedging derivatives			4
Non-hedging derivatives [member] | Financial assets at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Non-hedging derivatives			15
Hedging derivatives	12
Hedging derivatives	7
Non-hedging derivatives			7
Non-hedging derivatives [member] | Financial liabilities at fair value through profit or loss, category [member]
Non-current liabilities
Non-current liabilities	2
Non-hedging derivatives			5
Current liabilities
Non-hedging derivatives			4
Hedging derivatives [member]
Non-current liabilities
Hedging derivatives	1,423		1,914
Current liabilities
Hedging derivatives	338		71
Hedging derivatives [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	242
Hedging derivatives	1,490
Non-current liabilities
Hedging derivatives	1,423		1,914
Current liabilities
Hedging derivatives	338		71
Non-current assets
Hedging derivatives			1,495
Current Assets
Hedging derivatives			260
Hedging derivatives [member] | Fair value [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	1,732		1,755
Current liabilities
Hedging derivatives	1,761		1,985
Hedging derivatives [member] | Financial assets at fair value through equity category [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	1,659		1,713
Hedging derivatives	221
Hedging derivatives	1,438
Non-current assets
Hedging derivatives			1,474
Current Assets
Hedging derivatives			239
Hedging derivatives [member] | Financial assets at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	73		42
Hedging derivatives	21
Hedging derivatives	52
Non-current assets
Hedging derivatives			21
Current Assets
Hedging derivatives			21
Hedging derivatives [member] | Financial liabilities at fair value through equity category [member]
Current liabilities
Hedging derivatives	1,761		1,966
Non-current liabilities
Hedging derivatives	1,423		1,895
Current liabilities
Hedging derivatives	338		71
Hedging derivatives [member] | Financial liabilities at fair value through profit or loss, category [member]
Current liabilities
Hedging derivatives			19
Non-current liabilities
Hedging derivatives			19
Other Investments1 [member] | Level 1 [member]
Non-currentassets
Other investments			3
Non-current assets
Non-current assets	3
Other Investments1 [member] | Level 2 [member]
Non-currentassets
Other investments			20
Non-current assets
Non-current assets	16
Other Investments1 [member] | Level 3 of fair value hierarchy [member]
Non-current assets
Non-current assets	30
Other Investments1 [member] | Financial assets at fair value through equity category [member]
Non-currentassets
Other investments			28
Other Investments1 [member] | Financial assets at fair value through profit or loss, category [member]
Non-currentassets
Other investments			23
Non-current assets
Non-current assets	49
Securities other than investments [member] | Level 1 [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	181
Current Assets
Securities other than investments available for sale			993
Current Assets
Securities other than investments	945
Securities other than investments [member] | Financial assets at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	181
Current Assets
Securities other than investments available for sale			993
Current Assets
Securities other than investments	945
Financial assets at amortized cost, class [member]
Non-current assets
Total			7,913
Financial asset cost [member]
Non-current assets
Total			29
Assets
Loans and receivables			1
Non-currentassets
Miscellaneous receivables ( non-current)			1
Financial assets at amortized cost, category [member]
Non-current assets
Total	5,800
Assets
Financial assets measured at ammortized cost	5,800
Loans and receivables			7,913
Non-currentassets
Receivables from employees	43		47
Other financial receivables			150
Miscellaneous receivables ( non-current)	326		370
Current Assets
Receivables from employees	14		16
Other short-term financial receivables	2		101
Cash and cash equivalents	1,917		3,575
Trade receivables	3,327		3,500
Other receivables (current)	125		154
Contract Assets	46
Gross carrying amount [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives		260	260
Financial receivables for lease contracts	124	114	114
Non-current assets
Non-currentassets	54	69	69
Current Assets	70	45	45
Total	8,850	10,737	10,849
Liabilities
Financial liabilities measured at ammortized cost	32,064
Financial liabilities measured at ammortized cost		33,389	33,355
Non-current liabilities
Financial payables	21,894	23,940	23,940
Current liabilities
Financial payables	5,367	4,500	4,500
Trade and miscellaneous payables and other current liabilities	4,610	4,915	4,915
Contract Liabilities	193	34
Financial liabilities at fair value through profit or loss held for trading			9
Financial liabilities measured at fair value through profit or loss	2	9	9
Current liabilities
Finance lease liabilities	1,948	2,430	2,430
Non-current liabilities	1,740	2,249	2,249
Current liabilities	208	181	181
Total	35,775	37,813	37,779
Assets
Financial assets measured at ammortized cost	5,800	7,802	7,914
Loans and receivables			7,914
Non-currentassets
Receivables from employees	43	47	47
Other financial receivables		150	150
Miscellaneous receivables ( non-current)	326	371	371
Current Assets
Receivables from employees	14	16	16
Available-for-sale financial assets			1,044
Other short-term financial receivables	2	101	101
Cash and cash equivalents	1,917	3,575	3,575
Financial assets at fair value through profit or loss held for trading			22
Trade receivables	3,327	3,353	3,500
Other receivables (current)	125	154	154
Contract Assets	46	35
Financial assets measured at fair value through other comprehensive income	994	1,044	1,044
Current Assets
Financial assets measured at fair value through profit or loss	200	22	22
Current Assets
Financial receivables for lease contracts	124	114	114
Gross carrying amount [member] | Non-hedging derivatives [member]
Disclosure of detailed information about financial instruments [line items]
Non-hedging derivatives			15
Hedging derivatives	12	15	15
Hedging derivatives	7	7	7
Non-hedging derivatives			7
Non-current liabilities
Non-current liabilities	2	5	5
Non-hedging derivatives			5
Current liabilities
Current liabilities		4	4
Non-hedging derivatives			4
Gross carrying amount [member] | Hedging derivatives [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	1,732		1,755
Hedging derivatives	242	1,755	1,755
Hedging derivatives	1,490	1,495	1,495
Current liabilities
Hedging derivatives	1,761	1,985	1,985
Non-current liabilities
Hedging derivatives	1,423	1,914	1,914
Current liabilities
Hedging derivatives	338	71	71
Non-current assets
Hedging derivatives			1,495
Current Assets
Hedging derivatives			260
Gross carrying amount [member] | Other Investments1 [member]
Non-currentassets
Other investments			51
Non-current assets
Non-current assets	49	51	51
Gross carrying amount [member] | Securities other than investments [member]
Disclosure of detailed information about financial instruments [line items]
Hedging derivatives	181
Current Assets
Securities other than investments available for sale			993
Current Assets
Securities other than investments	€ 945	€ 993	€ 993

Supplementary Disclosures on _4

Supplementary Disclosures on Financial Instruments - Summary of Gains and Losses by IAS 39 Category (Detail) - EUR (€)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about financial instruments [line items]
Loans and Receivables		€ (356,000,000)
Available-for-Sale financial assets		8,000,000
Financial Assets/Liabilities Held for Trading		(19,000,000)
Financial Liabilities at Amortized Cost		(1,338,000,000)
Total		(1,705,000,000)
IFRS 9 [member]
Disclosure of detailed information about financial instruments [line items]
Assets measured at amortized cost	€ (540,000,000)
Assets and liabilities measured at fair value through profit or loss	25,000,000
Assets measured at fair value recognized in the statements of comprehensive income	7,000,000
Financial Liabilities at Amortized Cost	(1,160,000,000)
Total	(1,668,000,000)
Interest [member]
Disclosure of detailed information about financial instruments [line items]
Assets measured at amortized cost		1,376,000,000
Total		1,494,000,000
Loans and Receivables		118,000,000
Financial Liabilities at Amortized Cost		1,376,000,000
Total		€ 1,494,000,000
Interest [member] | IFRS 9 [member]
Disclosure of detailed information about financial instruments [line items]
Assets measured at amortized cost	40
Assets and liabilities measured at fair value through profit or loss	0
Assets measured at fair value recognized in the statements of comprehensive income	0
Liabilities measured at amortized cost	1,178
Total	1,218
Financial Liabilities at Amortized Cost	40
Total	€ 1,218

Supplementary Disclosures on _5

Supplementary Disclosures on Financial Instruments - Summary of Gains and Losses by IAS 39 Category (Parenthetical) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about financial instruments [abstract]
Fees and expenses not included in the effective interest rate	€ 2	€ 2

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) € in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)Years	Dec. 31, 2017EUR (€)	Dec. 31, 2016EUR (€)
Disclosure of defined benefit plans [line items]
Increase (decrease) in employee benefits	€ 214
Increase (decrease) in provision for employee severance indemnities	(71)
Net actuarial gains (losses) recognized	€ 23	€ 8	€ (33)
Inflation rate	1.50%	1.50%
Provision for employee benefits	€ 1,619	€ 1,833	1,385
Weighted average duration of the obligation | Years	11.9
Increase (decrease) in provision for termination benefit incentives	€ (143)
Increase in employee benefits	200	687
Decrease in employee benefits	(414)	(229)
Actuarial assumption of decrease in discount rates [member]
Disclosure of defined benefit plans [line items]
Net actuarial gains (losses) recognized	€ 23	€ 8
Changes in discount rates	1.57%	1.30%
Provision for termination benefit [member]
Disclosure of defined benefit plans [line items]
Increase (decrease) in provision for employee severance indemnities	€ (63)
Provision for pension plans and other [member]
Disclosure of defined benefit plans [line items]
Provision for employee benefits	22	€ 22	28
Increase in employee benefits	3	(2)
Decrease in employee benefits	(3)	(1)
Provision for termination benefit incentives [member]
Disclosure of defined benefit plans [line items]
Increase in employee benefits	348
Decrease in employee benefits	204
Provision for employee severance indemnities [member]
Disclosure of defined benefit plans [line items]
Provision for employee benefits	887	958	€ 1,009
Increase in employee benefits	(8)
Decrease in employee benefits	€ (63)	€ (51)

Employee Benefits - Summary of

Employee Benefits - Summary of Provisions for Employee Benefits (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	€ 1,833	€ 1,385
Increases/ Present value	200	687
Decrease	(414)	(229)
Exchange differences and other changes		(10)
Employee benefits, ending balance	1,619	1,833
Non-current portion, beginning balance	1,736	1,355
Non-current portion, ending balance	1,567	1,736
Current portion, beginning balance	97	30
Current portion, ending balance	52	97
Provision for employee severance indemnities [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	958	1,009
Increases/ Present value	(8)
Decrease	(63)	(51)
Employee benefits, ending balance	887	958
Provision for pension plans and other [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	22	28
Increases/ Present value	3	(2)
Decrease	(3)	(1)
Exchange differences and other changes		(3)
Employee benefits, ending balance	22	22
Provision for termination benefit incentives and Corporate restructuring expenses [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	853	348
Increases/ Present value	205	689
Decrease	(348)	(177)
Exchange differences and other changes		(7)
Employee benefits, ending balance	710	853
Other provisions for employee benefits [member]
Disclosure of defined benefit plans [line items]
Employee benefits, beginning balance	875	376
Increases/ Present value	208	687
Decrease	(351)	(178)
Exchange differences and other changes		(10)
Employee benefits, ending balance	€ 732	€ 875

Employee Benefits - Summary o_2

Employee Benefits - Summary of Increases in Present Value of Employee Benefits (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of defined benefit plans [abstract]
(Positive)/negative effect of curtailment		€ (6)
Current service cost	€ 0	0	€ 0
Finance expenses	13	14	16
Net actuarial (gains) losses for the year	(23)	€ (8)	33
Total	€ (10)		€ 49

Employee Benefits - Summary o_3

Employee Benefits - Summary of Increases in Present Value of Employee Benefits (Parenthetical) (Detail) - Employee	Dec. 31, 2018	Dec. 31, 2017
Disclosure of defined benefit plans [line items]
Number of employees	57,901	59,429
Top of range [member]
Disclosure of defined benefit plans [line items]
Number of employees	50

Employee Benefits - Summary o_4

Employee Benefits - Summary of Employee Benefits Assumptions (Detail)	12 Months Ended
	Dec. 31, 2018
Probability of resignation:
Probability of retirement	Reaching the minimum requisites established by the Obligatory General Insurance updated on the basis of Italian Law 214 of December 22, 2011
Executives [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Inflation rate	1.50%
Discount rate	1.57%
Employee severance indemnities annual increase rate	2.625%
Probability of death	RG 48 mortality tables published by "Ragioneria Generale dello Stato"
Probability of disability	INPS tables divided by age and sex
Probability of resignation:
Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70%	1.50%
Executives [member] | Equal to or less than 40 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Annual real wage growth	1.00%
Executives [member] | Over 40 but equal to or less than 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Annual real wage growth	0.50%
Executives [member] | Over 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Annual real wage growth	0.00%
Executives [member] | Up to 40 years of age [member]
Probability of resignation:
Probability of resignation	6.50%
Executives [member] | From 41 to 50 years of age [member]
Probability of resignation:
Probability of resignation	2.00%
Executives [member] | From 51 to 59 years of age [member]
Probability of resignation:
Probability of resignation	2.00%
Executives [member] | From 60 to 64 years of age [member]
Probability of resignation:
Probability of resignation	20.00%
Executives [member] | Over 65 years of age [member]
Probability of resignation:
Probability of resignation	0.00%
Non executives [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Inflation rate	1.50%
Discount rate	1.57%
Employee severance indemnities annual increase rate	2.625%
Probability of death	RG 48 mortality tables published by "Ragioneria Generale dello Stato"
Probability of disability	INPS tables divided by age and sex
Probability of resignation:
Probability of receiving at the beginning of the year an advance from the provision for severance indemnities accrued equal to 70%	1.50%
Non executives [member] | Equal to or less than 40 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Annual real wage growth	1.00%
Non executives [member] | Over 40 but equal to or less than 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Annual real wage growth	0.50%
Non executives [member] | Over 55 years of age [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Annual real wage growth	0.00%
Non executives [member] | Up to 40 years of age [member]
Probability of resignation:
Probability of resignation	1.00%
Non executives [member] | From 41 to 50 years of age [member]
Probability of resignation:
Probability of resignation	0.50%
Non executives [member] | From 51 to 59 years of age [member]
Probability of resignation:
Probability of resignation	0.50%
Non executives [member] | From 60 to 64 years of age [member]
Probability of resignation:
Probability of resignation	6.50%
Non executives [member] | Over 65 years of age [member]
Probability of resignation:
Probability of resignation	0.00%

Employee Benefits - Summary o_5

Employee Benefits - Summary of Employee Benefits Assumptions (Parenthetical) (Detail)	Dec. 31, 2018
Executives [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Advance from the provision for severance indemnities accrued, percentage	70.00%
Non executives [member]
Disclosure Of Emplyee Benefits Assumptions [line items]
Advance from the provision for severance indemnities accrued, percentage	70.00%

Employee Benefits - Summary o_6

Employee Benefits - Summary of Sensitivity Analysis for Actuarial Assumptions (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	€ 23	€ 8	€ (33)
Actuarial assumption of turnover rate [member] | +0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	(2)
Actuarial assumption of turnover rate [member] | -0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	2
Actuarial assumption of expected rates of inflation [member] | +0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	19
Actuarial assumption of expected rates of inflation [member] | -0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	(18)
Actuarial assumption of discount rates [member] | +0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	(25)
Actuarial assumption of discount rates [member] | -0.25 p.p [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual discount rate	€ 26

Provisions - Additional Informa

Provisions - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of other provisions [line items]
Increase (decrease) in other provisions		€ 103
Other provisions	€ 1,220	1,117
Provision used directly	194
Provision for charges on investments and corporate-related transactions	11
Provision for taxation and tax risks [member]
Disclosure of other provisions [line items]
Increase (decrease) in other provisions	11
Other provisions	104	93
Provision used directly	21
Provision for restoration costs [member]
Disclosure of other provisions [line items]
Other provisions	348	350
Provision used directly	13
Provision for restoration costs [member] | Brazil business unit [member]
Disclosure of other provisions [line items]
Other provisions	7
Provision for legal disputes [member]
Disclosure of other provisions [line items]
Other provisions	709	€ 605
Provision used directly	134
Provision for legal disputes [member] | Brazil business unit [member]
Disclosure of other provisions [line items]
Other provisions	131
Settlement agreement [member] | Brazil business unit [member]
Disclosure of other provisions [line items]
Provision used directly	86
Domestic business unit [member] | Provision for restoration costs [member]
Disclosure of other provisions [line items]
Other provisions	341
Domestic business unit [member] | Provision for legal disputes [member]
Disclosure of other provisions [line items]
Other provisions	578
Domestic business unit [member] | Settlement agreement [member]
Disclosure of other provisions [line items]
Provision used directly	€ 48

Provisions - Summary Of Other P

Provisions - Summary Of Other Provisions (Detail) € in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)
Disclosure of other provisions [line items]
Beginning balance	€ 1,117
Increase	305
Used through income statement	(9)
Used directly	(194)
Exchange differences and other changes	1
Ending balance	1,220
Non-current portion, ending balance	825
Non-current portion, beginning balance	876
Current portion, beginning balance	292
Current portion, ending balance	344
Provision for taxation and tax risks [member]
Disclosure of other provisions [line items]
Beginning balance	93
Increase	30
Used directly	(21)
Exchange differences and other changes	2
Ending balance	104
Provision for restoration costs [member]
Disclosure of other provisions [line items]
Beginning balance	350
Increase	10
Used directly	(13)
Exchange differences and other changes	1
Ending balance	348
Provision for legal disputes [member]
Disclosure of other provisions [line items]
Beginning balance	605
Increase	244
Used directly	(134)
Exchange differences and other changes	(6)
Ending balance	709
Provision for commercial risks [member]
Disclosure of other provisions [line items]
Beginning balance	28
Increase	18
Used directly	(12)
Exchange differences and other changes	(1)
Ending balance	33
Provision for risks and charges on investments and corporate-related transactions [member]
Disclosure of other provisions [line items]
Beginning balance	32
Used through income statement	(5)
Used directly	(6)
Ending balance	21
Other provisions [member]
Disclosure of other provisions [line items]
Beginning balance	9
Increase	3
Used through income statement	(4)
Used directly	(8)
Exchange differences and other changes	5
Ending balance	€ 5

Miscellaneous Payables and Ot_3

Miscellaneous Payables and Other Non-Current Liabilities - Additional Information (Detail) - EUR (€)	1 Months Ended	12 Months Ended
	Oct. 31, 2018	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Increase (decrease) in miscellaneous payables and other non-current liabilities		€ 1,619,000,000
Payables to social security agencies		275,000,000	€ 238,000,000	€ 238,000,000
Other payables		1,919,000,000		1,903,000,000
Investment		1,922,000,000
Nominal value of residual debt, non current		1,903,000,000
Nominal value of residual debt, current		19,000,000
Contract liabilities		109,000,000	99,000,000
Deferred income		0		988,000,000
Other deferred revenue and income		595,000,000	638,000,000
Other deferred revenue and income, non-current portion		€ 190,000,000
Capital grants remaining useful life		18 years
Capital grants		€ 357,000,000	€ 391,000,000	€ 391,000,000
Activation and installation fees [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Deferred income		20,000,000
Network access fees [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Deferred income		32,000,000
Subscription fees and rent and maintenance [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Deferred income		49,000,000
First Installment [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Payment of installment	€ 477,000,000
Second Installment Due September 2019 [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Payment of installment		19,000,000
Third Installment Due September 2020 [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Payment of installment		110,000,000
Fourth Installment Due September 2021 [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Payment of installment		55,000,000
Fifth Installment Due September 2022 [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Payment of installment		1,738,000,000
Employee Benefit Obligations [member]
Disclosure Miscellaneous Payables And Other Non Current Liabilities [line items]
Payables to social security agencies		€ 275,000,000

Miscellaneous Payables and Ot_4

Miscellaneous Payables and Other Non-Current Liabilities - Schedule of Miscellaneous Payables and Other Non-Current Liabilities (Detail) - EUR (€)	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Miscellaneous payables (non-current)
Payables to social security agencies	€ 275,000,000	€ 238,000,000	€ 238,000,000
Income tax payables	42,000,000	45,000,000	45,000,000
Other liabilities	1,919,000,000		16,000,000
Non current payables	2,236,000,000		299,000,000
Other non current liabilities
Deferred revenues from contract with customers (Contract liabilities)	109,000,000	99,000,000
Other deferred revenue and income	595,000,000	638,000,000
Capital grants	357,000,000	391,000,000	391,000,000
Deferred income	0		988,000,000
Other non current liabilities	1,061,000,000	1,128,000,000	1,379,000,000
Miscellaneous payables and other non-current liabilities	€ 3,297,000,000	€ 1,427,000,000	€ 1,678,000,000

Miscellaneous Payables and Ot_5

Miscellaneous Payables and Other Non-Current Liabilities - Summary of Impact Caused by Adoption of IFRS 15 (Detail) - EUR (€)	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Miscellaneous payables (non-current)
Payables to social security agencies	€ 275,000,000	€ 238,000,000	€ 238,000,000
Income tax payables	42,000,000	45,000,000	45,000,000
Other liabilities	0	16,000,000	0
Miscellaneous payables		299,000,000
Other non current liabilities
Deferred revenues from contract with customers (Contract liabilities)	109,000,000	99,000,000
Other deferred revenue and income	595,000,000	638,000,000
Capital grants	357,000,000	391,000,000	391,000,000
Deferred income	0		988,000,000
Other non current liabilities	1,061,000,000	1,128,000,000	1,379,000,000
Miscellaneous payables and other non-current liabilities	€ 3,297,000,000	€ 1,427,000,000	1,678,000,000
IFRS 15 Reclassification [member]
Miscellaneous payables (non-current)
Payables to social security agencies			238,000,000
Income tax payables			45,000,000
Other liabilities			16,000,000
Miscellaneous payables			299,000,000
Other non current liabilities
Capital grants			391,000,000
Deferred income			988,000,000
Other non current liabilities			1,379,000,000
Miscellaneous payables and other non-current liabilities			1,678,000,000
IFRS 15 reclassifications [member]
Other non current liabilities
Deferred revenues from contract with customers (Contract liabilities)			350,000,000
Other deferred revenue and income			638,000,000
Deferred income			(988,000,000)
IFRS 15 adjustments [member]
Other non current liabilities
Deferred revenues from contract with customers (Contract liabilities)			(251,000,000)
Other non current liabilities			(251,000,000)
Miscellaneous payables and other non-current liabilities			€ (251,000,000)

Miscellaneous Payables and Ot_6

Miscellaneous Payables and Other Non-Current Liabilities - Schedule of Payables to Social Security Agencies (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Non-currentpayables:
Non-current payables	€ 275	€ 238	€ 238
Current payables	173		58
Trade payables	448		296
From 2 to 5 years [member]
Non-currentpayables:
Non-current payables	259		226
Beyond 5 years [member]
Non-currentpayables:
Non-current payables	€ 16		€ 12

Trade and Miscellaneous Payab_3

Trade and Miscellaneous Payables and Other Current Liabilities - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Increase (decrease) in miscellaneous payables and other non-current liabilities	€ (619)
Trade payable	4,470	€ 4,645	€ 4,645
Tax payables	448		296
Other current liabilities	1,052	1,066	€ 1,179
Liabilities from customer contracts (Contract liabilities)	931	920
Current contract liabilities	119
Liabilities from customer contracts (Contract liabilities) from customer-related items	391
Liabilities from customer contracts (Contract liabilities) from progress payments and advances relating to trade payables following prepayments	121
Deferred revenues from customer contracts	300
Other deferred revenue and income	121	€ 146
Activation and installation fees [member] | IFRS 15 Reclassification [member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Deferred revenues from customer contracts	59
Interconnection charges [member] | IFRS 15 Reclassification [member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Deferred revenues from customer contracts	121
Rent and maintenance [member] | IFRS 15 Reclassification [member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Deferred revenues from customer contracts	97
Brazil business unit [member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Trade payable	1,044
Other tax payables	139
TIM S.p.A [member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Trade payable	2,925
Tax payables	262
Government concession tax	21
Withholding tax payables	69
VAT payable	€ 12

Trade and Miscellaneous Payab_4

Trade and Miscellaneous Payables and Other Current Liabilities - Summary of Trade and Miscellaneous Payables and Other Current Liabilities (Detail) - EUR (€) € in Millions	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Payables on construction work	€ 19	€ 18	€ 19
Trade payables
Payables to suppliers	4,262	4,090	4,262
Payables to other telecommunication operators	383	380	383
Trade payables	4,645	4,470	4,645
Payables to suppliers	4,262	4,090	4,262
Payables to other telecommunication operators	383	380	383
Trade payables	4,645	4,470	4,645
Tax payables	584	262	584
Miscellaneous payables
Payables for employee compensation	245	151	245
Payables to social security agencies	202	338	202
Payables for "TLC operating fee"	15	15	15
Dividends approved, but not yet paid to shareholders	19	35	19
Other	223	164	223
Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year	97	52	97
Provisions for risks and charges for the current portion expected to be settled within 1 year	292	344	292
Payables for employee compensation	245	151	245
Payables to social security agencies	202	338	202
Payables for "TLC operating fee"	15	15	15
Dividends approved, but not yet paid to shareholders	19	35	19
Other	223	164	223
Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year	97	52	97
Provisions for risks and charges for the current portion expected to be settled within 1 year	292	344	292
Miscellaneous payables	1,093	1,099	1,093
Liabilities from contract with customers (Contract liabilities)	920	931
Customer-related items			602
Advances received			69
Other deferred revenue and income	146	121
Trade and miscellaneous deferred income			508
Miscellaneous other current liabilities	1,066	1,052	1,179
Trade and miscellaneous payables and other current liabilities	7,407	6,901	7,520
Other current liabilities
Liabilities from contract with customers (Contract liabilities)	920	931
Customer-related items			602
Advances received			69
Other deferred revenue and income	146	121
Trade and miscellaneous deferred income			508
Miscellaneous other current liabilities	1,066	1,052	1,179
Trade and miscellaneous payables and other current liabilities	€ 7,407	6,901	7,520
Previously Stated [Member]
Disclosure of Trade and Miscellaneous Payables and Other Current Liabilities [Line Items]
Payables on construction work		19
Trade payables
Payables to suppliers		4,262
Payables to other telecommunication operators		383
Trade payables		4,645
Payables to suppliers		4,262
Payables to other telecommunication operators		383
Trade payables		4,645
Tax payables		584
Miscellaneous payables
Payables for employee compensation		245
Payables to social security agencies		202
Payables for "TLC operating fee"		15
Dividends approved, but not yet paid to shareholders		19
Other		223
Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year		97
Provisions for risks and charges for the current portion expected to be settled within 1 year		292
Payables for employee compensation		245
Payables to social security agencies		202
Payables for "TLC operating fee"		15
Dividends approved, but not yet paid to shareholders		19
Other		223
Employee benefits (except for Employee severance indemnities) for the current portion expected to be settled within 1 year		97
Provisions for risks and charges for the current portion expected to be settled within 1 year		292
Miscellaneous payables		1,093
Customer-related items		602
Advances received		69
Trade and miscellaneous deferred income		508
Miscellaneous other current liabilities		1,179
Trade and miscellaneous payables and other current liabilities		7,520
Other current liabilities
Customer-related items		602
Advances received		69
Trade and miscellaneous deferred income		508
Miscellaneous other current liabilities		1,179
Trade and miscellaneous payables and other current liabilities		7,520
IFRS 15 reclassifications [member]
Miscellaneous payables
Liabilities from contract with customers (Contract liabilities)		1,033
Customer-related items		(602)
Advances received		(69)
Other deferred revenue and income		146
Trade and miscellaneous deferred income		(508)
Other current liabilities
Liabilities from contract with customers (Contract liabilities)		1,033
Customer-related items		(602)
Advances received		(69)
Other deferred revenue and income		146
Trade and miscellaneous deferred income		(508)
IFRS 15 adjustments [member]
Miscellaneous payables
Liabilities from contract with customers (Contract liabilities)		(113)
Miscellaneous other current liabilities		(113)
Trade and miscellaneous payables and other current liabilities		(113)
Other current liabilities
Liabilities from contract with customers (Contract liabilities)		(113)
Miscellaneous other current liabilities		(113)
Trade and miscellaneous payables and other current liabilities		(113)
Financial Instruments [member]
Trade payables
Payables to suppliers		4,090	4,262
Payables to other telecommunication operators		380	383
Trade payables		4,470	4,645
Payables to suppliers		4,090	4,262
Payables to other telecommunication operators		380	383
Trade payables		4,470	4,645
Miscellaneous payables
Dividends approved, but not yet paid to shareholders		35	19
Other		105	174
Dividends approved, but not yet paid to shareholders		35	19
Other		105	174
Miscellaneous payables		140	193
Liabilities from contract with customers (Contract liabilities)		193
Customer-related items			77
Miscellaneous other current liabilities		193	77
Trade and miscellaneous payables and other current liabilities		4,803	4,915
Other current liabilities
Liabilities from contract with customers (Contract liabilities)		193
Customer-related items			77
Miscellaneous other current liabilities		193	77
Trade and miscellaneous payables and other current liabilities		€ 4,803	€ 4,915

Contingent Liabilities, Other_3

Contingent Liabilities, Other Information, Commitments And Guarantees - Additional Information (Detail) R$ in Millions

Nov. 30, 2018EUR (€)

Jul. 23, 2018

May 28, 2015EUR (€)

Jan. 01, 2012EUR (€)

Nov. 30, 2018EUR (€)

Sep. 30, 2018EUR (€)

Feb. 28, 2018BRL (R$)Assessment

Feb. 28, 2017EUR (€)Appeals

Jul. 31, 2016EUR (€)

Apr. 30, 2016EUR (€)

Aug. 31, 2015EUR (€)

Jul. 31, 2015EUR (€)

Jun. 30, 2015EUR (€)

Nov. 30, 2013EUR (€)

Aug. 31, 2013EUR (€)

May 31, 2013EUR (€)

Feb. 28, 2013EUR (€)

Feb. 29, 2012EUR (€)

May 31, 2010EUR (€)

Oct. 31, 2009EUR (€)

Jun. 30, 2009EUR (€)

Dec. 31, 2018EUR (€)AssessmentDirectorGuarantee

Dec. 31, 2018BRL (R$)AssessmentDirectorGuarantee

Dec. 31, 2017EUR (€)

Dec. 31, 2015EUR (€)

Dec. 31, 2014

Dec. 31, 2012EUR (€)

Dec. 31, 2018BRL (R$)

May 31, 2018EUR (€)

May 08, 2018EUR (€)

Mar. 22, 2011BRL (R$)

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Posted liability for disputes

€ 508,000,000

Possible loss for tax and regulatory disputes | R$

R$ 16500

Number of tax assessments | Assessment

2

2

2

Tax assessments | R$

R$ 679

R$ 369

Dispute remaining amount | R$

296

Risk consideration together | R$

2,900

Receivables | R$

3,300

Tax receivables | R$

1,900

Legal revaluation receivables | R$

1,400

Number of other plaintiffs brought claims

32

Number of plaintiffs filed claims for compensation

22

Amount of compensation claimed by filled plaintiffs

€ 60,000,000

Amount of compensation claimed by single filled plaintiff

€ 42,000,000

Imprisonment period for defendants

1 year to 5 years of imprisonment

Amount of judgment to defendants for damages plus legal fees

€ 270,000

Additional amount of judgment to defendants for pecuniary and non-pecuniary damages

€ 10,000,000

Reversal of provisional judgment awarded to Company

€ 10,000,000

Cancellation of compensation advanced by certain plaintiffs

€ 60,000,000

Guarantee bond issued

€ 19,021,000,000

€ 19,775,000,000

Number of independent directors re-appointed | Director

13

13

Total number of independent directors | Director

15

15

Fined TIM

€ 1,044,000

€ 696,000

1,160,000

Amount of administrative sanction canceled

€ 1,160,000

Balance of amounts paid in concession charges

€ 113,000,000

Balance of amounts paid in concession charges for the years

1994-1998

1994-1998

Adjustment of the licence fee

€ 11,000,000

Adjustment of the licence fee for the year

1994

1994

Amount not received due to bad debts against turnover

€ 9,000,000

Payment of outstanding balances of license fees

46,000,000

Adjustment of portion of licence fee

41,000,000

Law suit filing date

During the preliminary hearing, which started in April 2015

Name of defendant

TIM

Number of all plaintiffs brought claims

26

Action taken by the defendant against plaintiff

The trial started in November 2015, and, as the party liable for damages, the Company has reached a settlement agreement with 12 of the 18 individuals (heirs/injured persons/family members) who are civil parties to the dispute and they have, therefore, withdrawn the claim for damages against TIM.

Number of defendants

18

Number of defendants found as guilty

13

Number of defendants found as non guilty

4

Number of cases dismissed

1

Litigation settlement compensation payable for damages along with defendents

€ 1,900,000

Amount cliamed by Elinet S.p.A due to total damages

282,000,000

Number of defendant included the company committed trial

89

TIM to be ordered to pay an administrative fine

€ 900,000

Restitution of concession charge plus interest

386,000,000

Claims plus legal interest and adjustment to account for any inflation effect

529,000,000

Contingent liabilities

500,000,000

Allocated risk provision

20,000,000

Net of back-to-back guarantees received

33,000,000

Guarantees provided by third parties

6,979,000,000

Guarantees for loans received

1,255,000,000

Guarantees performance under outstanding contracts

€ 5,724,000,000

Number of guarantees issued | Guarantee

6,000,000

6,000,000

Guarantees issued, value

€ 1,922,000,000

€ 74,300,000

Insurance guarantees

739,000,000

Guarantee obligation on telecommunication services

1,616,000,000

1,737,000,000

TIM CELULAR SA [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Authorised payment amount requested | R$

R$ 73

Vodafone [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Litigation claim

€ 93,000,000

Pending Litigation [Member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount cliamed by Elinet S.p.A due to total damages

58,000,000

Surety bond [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Guarantee obligation on telecommunication services

€ 244,000,000

Federal income taxes [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Tax disputes | R$

4,000

State income taxes [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Tax disputes | R$

8,900

Bottom of range [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Imprisonment period for defendants

P1Y

Top of range [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Imprisonment period for defendants

P7Y6M

Telecom Italia Latam [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of judgment to defendants for non-pecuniary damages

€ 20,000

Telecom Italia Audit And Compliance Services [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of judgment to defendants for non-pecuniary damages

€ 20,000

Vivendi group [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Number of independent directors re-appointed | Director

5

5

JVCO [member] | Brazil-CAM JVCO arbitration [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Arbitration fees, percentage

90.00%

TIM Brasil group [member] | Brazil-CAM JVCO arbitration [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Arbitration fees, percentage

10.00%

Tim Group [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Restitution of concession charge plus interest

€ 143,000,000

Tax assessment one [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Tax assessments | R$

344

Tax assessment two [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Tax assessments | R$

R$ 335

Brazilian Development Bank [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Low rate loans granted

267,000,000

Ing [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees

105,000,000

Amount of guarantees loan paid back upon maturity

100,000,000

Banco Santander [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees

52,000,000

Sumitomo Mitsui Banking [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees

52,000,000

SACE [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees

368,000,000

Santander, Sumitomo and SACE [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees loan paid back upon maturity

200,000,000

BBVA - Banco Bilbao Vizcaya Argentaria [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees

210,000,000

UniCredit Bank [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees

105,000,000

Banco Bilbao Vizcaya Argentaria and Unicredit [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of guarantees loan paid back upon maturity

300,000,000

Eutelia and voiceplus [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 730,000,000

Vodafone dispute-universal service [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 9,000,000

€ 38,000,000

Number of appeals filed against ministry of economic development and tim | Appeals

4

Legal proceeding claim received value

€ 38,000,000

Non recognition of fiscal effects of merger and tax deductibility of write down of goodwill [member] | Tim Celular [member] | Federal Tax Authorities Of Brazil [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount for tax assessment notice served | R$

R$ 1265

Teleunit [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 362,000,000

35,400,000

Golden Power Case [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Financial penalty

€ 74,300,000

Guarantee bond issued

€ 74,300,000

Alfiere S.p.A. - TIM-CDP Immobiliare arbitrations [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

24,000,000

Amount of administrative sanction canceled

24,000,000

Amount cliamed by Elinet S.p.A due to total damages

300,000,000

Compensation for damages

88,000,000

Antitrust case A four twenty eight [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Amount of judgment awarded for abuse of dominant position under administrative sanction one

€ 88,182,000

Amount of judgment awarded for abuse of dominant position under administrative sanction two

€ 15,612,000

Vodafone (A428) [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 568,500,000

€ 1,812,000,000

Vodafone (A428) [member] | Bottom of range [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 876,000,000

Vodafone (A428) [member] | Top of range [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 1,029,000,000

Colt technology services [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 27,000,000

€ 23,000,000

KPNQ West Italia S.p.A. [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

37,000,000

Siportal [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

25,000,000

€ 48,400,000

MC-Link [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

51,000,000

Italian competition authority case I-761 [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Restricted competition fee

€ 21,500,000

Wind (I-761) [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 57,000,000

Vodafone I-761 [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 193,000,000

Vodafone [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

4,400,000

Vodafone [member] | Bottom of range [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

30,000,000

Vodafone [member] | Top of range [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Legal proceeding claim sought value

€ 48,900,000

Tax contingent liability [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Municipal taxes paid | R$

R$ 700

Definitive agreements [member]

Disclosure of Contingent Liabilities Other Information Commitments and Guarantees [Line Items]

Receivables | R$

R$ 353

Contingent Liabilities, Other_4

Contingent Liabilities, Other Information, Commitments and Guarantees - Information on Main Guarantees for Loans (Detail) € in Millions	Dec. 31, 2018EUR (€)
SACE [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	€ 368
BBVA - Banco Bilbao Vizcaya Argentaria [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	210
Cassa Depositi e Prestiti [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	158
Intesa Sanpaolo [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	115
Ing [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	105
UniCredit Bank [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	105
Commerzbank [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	57
Banco Santander [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	52
Sumitomo Mitsui Banking [member]
Disclosure of Guarantees [Line Items]
Amount of guarantees	€ 52

Revenues - Additional Informati

Revenues - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of revenue [line items]
Revenues	€ 18,940	€ 19,828	€ 19,025
Increase (decrease) revenue	(888)	803
Revenues from telecommunications services	1,616	€ 1,737
IFRS 15 Reclassification [member]
Disclosure of revenue [line items]
Revenue adjusted	60
Retail Customer [member]
Disclosure of revenue [line items]
Revenues from service by voice data services on fixed and mobile networks	10,920
Other wholesale operators [member]
Disclosure of revenue [line items]
Revenues from service by voice data services on fixed and mobile networks	€ 3,063

Revenues - Schedule of Revenues

Revenues - Schedule of Revenues (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue [abstract]
Equipment sales	€ 1,538	€ 1,560	€ 1,378
Services	17,379	18,264	17,655
Revenues on construction contracts	23	4	(8)
Total	€ 18,940	€ 19,828	€ 19,025

Other Income - Additional Infor

Other Income - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of other income [line items]
Other income	€ 341	€ 523	€ 311
Increase (decrease) in other income	(182)	€ 212
Brazil business unit [member]
Disclosure of other income [line items]
Other income	€ 37

Other Income - Disclosure of Ot

Other Income - Disclosure of Other Operating Income (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Analysis of income and expense [abstract]
Late payment fees charged for telephone services	€ 60	€ 59	€ 60
Recovery of employee benefit expenses, purchases and services rendered	27	22	33
Capital and operating grants	39	51	36
Damages, penalties and recoveries connected with litigation	29	40	24
Partnership agreements and other arrangements with suppliers	22	129	71
Estimate revisions and other adjustments	73	188
Other income	91	34	87
Total	€ 341	€ 523	€ 311

Acquisition of Goods and Serv_3

Acquisition of Goods and Services - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about business combination [line items]
Acquisition of goods and services	€ 8,186	€ 8,388	€ 7,793
Increase (decrease) by acquisition of goods and services	(202)	595
IFRS 16 [member]
Disclosure of detailed information about business combination [line items]
Reclassification from lease and rental costs to cost of services	€ 279	€ 301

Acquisition of Goods and Serv_4

Acquisition of Goods and Services - Disclosure of Detailed Information About Acquisition of Goods and Services (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about acquisition of goods and services [abstract]
Acquisition of raw materials and merchandise	€ 1,957	€ 1,863	€ 1,614
Costs of services:
Revenues due to other TLC operators	1,616	1,737	1,686
Costs for access services to Tlc networks	171	217	244
Commissions, sales commissions and other selling expenses	1,158	1,109	937
Advertising and promotion expenses	236	277	294
Professional and consulting services	242	223	186
Utilities	417	467	484
Maintenance	221	240	287
Outsourcing costs for other services	465	513	447
Mailing and delivery expenses for telephone bills, directories and other materials to customers	84	96	98
Other service expenses	634	664	609
Costs of services	5,244	5,543	5,272
Lease and rental costs:
Rent and leases	607	645	616
TLC circuit lease rents	126	119	82
Other lease and rental costs	252	218	209
Lease and rental costs	985	982	907
Total	€ 8,186	€ 8,388	€ 7,793

Employee Benefits Expenses - Ad

Employee Benefits Expenses - Additional Information (Detail) € in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)Employee	Dec. 31, 2017EUR (€)Employee	Dec. 31, 2016EUR (€)Employee
Disclosure of Employee Benefit Expenses [Line Items]
Employee benefit expenses	€ 3,105	€ 3,626	€ 3,106
Employee benefits expenses increase (decrease)	(521)	520
Restructuring expenses	€ 216	€ 680	€ 156
Average salaried workforce, including temporary work contracts | Employee	54,423	54,946	57,855
Headcount in service including temporary work contracts | Employee	57,901	59,429
Decrease in number of employees | Employee	1,528
Domestic defined benefit plan [member]
Disclosure of Employee Benefit Expenses [Line Items]
Employee benefit expenses	€ 2,781	€ 3,266
Foreign defined benefit plan [member]
Disclosure of Employee Benefit Expenses [Line Items]
Employee benefit expenses	317	353
Management Restructuring Plan [member]
Disclosure of Employee Benefit Expenses [Line Items]
Restructuring expenses	€ 216	€ 680

Employee Benefits Expenses - De

Employee Benefits Expenses - Details of Employee Benefit Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Employee benefits expenses
Wages and salaries	€ 1,994	€ 2,056	€ 2,116
Social security expenses	738	745	770
Other employee benefits	144	110	37
Employee benefits expenses	2,876	2,911	2,923
Costs and provisions for temp work	0	0	0
Miscellaneous expenses for personnel and other labor-related services rendered:
Charges for termination benefit incentives	8	28	10
Corporate restructuring expenses	216	680	156
Other	5	7	17
Miscellaneous expenses for personnel and other labor-related services rendered	229	715	183
Total	€ 3,105	€ 3,626	€ 3,106

Employee Benefits Expenses - _2

Employee Benefits Expenses - Details of Average Salaried Workforce Breakdown By Category (Detail) - Employee	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	54,423	54,946	57,855
Executives [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	646	707	837
Middle management [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	4,271	4,269	4,450
White collars [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	49,505	49,967	52,563
Blue collars [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	1	1	1
Employees on payroll [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce	54,423	54,944	57,851
Employees with temp work contracts [member]
Disclosure of Number and Average Number of Employees [Line Items]
Total average headcount of salaried workforce		2	4

Other Operating Expenses - Addi

Other Operating Expenses - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Other Operating Expense [abstract]
Other operating expenses	€ 1,259	€ 1,208	€ 1,083
(Decrease) increase in other operating expenses	51	€ 125
Increase in provision charges for bad debts	€ 10

Other Operating Expenses - Sche

Other Operating Expenses - Schedule of Other Operating Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Other Operating Expense [abstract]
Write-downs and expenses in connection with credit management	€ 518	€ 400	€ 335
Provision charges	189	228	144
TLC operating fees and charges	286	356	373
Indirect duties and taxes	125	111	100
Penalties, settlement compensation and administrative fines	73	33	44
Association dues and fees, donations, scholarships and traineeships	12	15	18
Sundry expenses	56	65	69
Total	1,259	1,208	1,083
of which, included in the supplementary disclosure on financial instruments	€ 518	€ 400	€ 335

Internally Generated Assets - A

Internally Generated Assets - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018	Dec. 31, 2016
Disclosure Of Internally Generated Assets [line items]
Internally generated assets	€ 65,619	€ 68,783	€ 68,326
Internally generated [member]
Disclosure Of Internally Generated Assets [line items]
Internally generated assets	570	626		€ 639
Increase (decrease) in internally generated assets	€ (56)	€ (13)

Internally Generated Assets - S

Internally Generated Assets - Schedule of Detail Information of Internally Generated Assets (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Internally Generated Assets [line items]
The total internally generated assets	€ 65,619	€ 68,326	€ 68,783
Internally generated [member]
Disclosure Of Internally Generated Assets [line items]
The total internally generated assets	570		626	€ 639
Internally generated [member] | Intangible assets with finite useful life [member]
Disclosure Of Internally Generated Assets [line items]
The total internally generated assets	248		272	289
Internally generated [member] | Tangible assets [member]
Disclosure Of Internally Generated Assets [line items]
The total internally generated assets	€ 322		€ 354	€ 350

Depreciation and Amortization -

Depreciation and Amortization - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Depreciation and amortisation expense [abstract]
Depreciation and amortization expense	€ 4,255	€ 4,473	€ 4,291
Increase in depreciation and amortization expense	€ (218)	€ 182

Depreciation and Amortization_2

Depreciation and Amortization - Summary of Depreciation and Amortization Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Depreciation And Amortization [line items]
Amortization of intangible assets with a finite useful life	€ 1,599	€ 1,793	€ 1,743
Depreciation of tangible assets owned	2,441	2,500	2,390
Depreciation of tangible assets held under finance leases	215	180	158
Total	4,255	4,473	4,291
Industrial patents and intellectual property rights [member]
Disclosure Of Depreciation And Amortization [line items]
Amortization of intangible assets with a finite useful life	1,171	1,263	1,243
Concessions, licenses, trademarks and similar rights [Member]
Disclosure Of Depreciation And Amortization [line items]
Amortization of intangible assets with a finite useful life	422	396	393
Other intangible assets [member]
Disclosure Of Depreciation And Amortization [line items]
Amortization of intangible assets with a finite useful life	6	134	107
Buildings (civil and industrial) [member]
Disclosure Of Depreciation And Amortization [line items]
Depreciation of tangible assets owned	36	39	48
Depreciation of tangible assets held under finance leases	159	130	125
Plant and Equipment [member]
Disclosure Of Depreciation And Amortization [line items]
Depreciation of tangible assets owned	2,229	2,286	2,170
Depreciation of tangible assets held under finance leases	18	21	17
Manufacturing and distribution equipment [member]
Disclosure Of Depreciation And Amortization [line items]
Depreciation of tangible assets owned	14	16	15
Other [member]
Disclosure Of Depreciation And Amortization [line items]
Depreciation of tangible assets owned	162	159	157
Depreciation of tangible assets held under finance leases	€ 38	€ 29	€ 16

Gains (Losses) on Disposals o_3

Gains (Losses) on Disposals of Non-Current Assets - Additional Information (Detail) € in Millions, R$ in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)	Dec. 31, 2017EUR (€)	Dec. 31, 2016EUR (€)Tranche	Dec. 31, 2016BRL (R$)Tranche
Disclosure of fair value measurement [line items]
Gains (losses) on disposals of non-current assets | €	€ (1)	€ 11	€ 14
Brazil [member]
Disclosure of fair value measurement [line items]
Gains (losses) on disposals of non-current assets			€ 12	R$ 44
Number of tranches | Tranche			2	2

Gains (Losses) on Disposals o_4

Gains (Losses) on Disposals of Non-current Assets - Schedule of Gain Losses on Disposal of Non Current Assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Gains on disposals of non-current assets:
Gains on the retirement/disposal of intangible and tangible assets	€ 13	€ 15	€ 28
Gains on the disposal of investments in subsidiaries	0	0	0
Gains on disposals of non-current assets	13	15	28
Losses on disposals of non-current assets:
Losses on the retirement/disposal of intangible and tangible assets	14	4	14
Losses on the disposals of investments in subsidiaries	0	0	0
Losses on disposals of non-current assets	14	4	14
Gains (losses) on disposals of non-current assets	€ (1)	€ 11	€ 14

Impairment Reversals (Losses)_3

Impairment Reversals (Losses) on Non-Current Assets - Additional Information (Detail) - EUR (€) € in Millions	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items]
Impairment losses on non-current assets		€ 2,586	€ 37	€ 3
Impairment loss on goodwill	€ 2,000	2,590
Write-downs of intangible assets			€ 37
Impairment loss on non-current assets				€ 3
Construction contracts [member]
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items]
Impairment loss on goodwill		4
Core domestic CGU [member]
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items]
Impairment loss on goodwill		2,450
Additional Impairment loss on goodwill		450
International wholesale CGU [member]
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items]
Impairment loss on goodwill		€ 140

Impairment Reversals (Losses)_4

Impairment Reversals (Losses) on Non-Current Assets - Summary of Impairment Reversals (Losses) on Non-Current Assets (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reversals of impairment losses on non-current assets:
Reversals of impairment losses on non-current assets on intangible assets	€ 4
Reversals of impairment losses on non-current assets on tangible assets	0	€ 0	€ 0
Reversals of impairment losses on non-current assets	4
Impairment losses on non-current assets:
Impairment losses on non-current assets on intangible assets	4	(30)
Impairment losses on non-current assets on tangible assets		7	3
Impairment losses on non-current assets	2,590	37	3
Total	€ (2,586)	€ (37)	€ (3)

Other Income (Expenses) From _3

Other Income (Expenses) From Investments - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Other Income Expenses From Investments [line items]
Other income (expenses) from investments	€ 11	€ (18)	€ 7
Dividends approved	281	230	204
Dividends received	11	1	7
TIERRA ARGENTEA S.A. [member]
Disclosure Of Other Income Expenses From Investments [line items]
Other income (expenses) from investments		€ (18)
Emittenti Titoli S.p.A. [Member]
Disclosure Of Other Income Expenses From Investments [line items]
Dividends approved	€ 11
Dividends received			€ 7

Other Income (Expenses) from _4

Other Income (Expenses) from Investments - Detailed Information About Other Income (Expenses) from Investments (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Detailed Information About Other Income Expenses From Investments [abstract]
Dividends from Other investments	€ 11	€ 1	€ 7
Net gains on disposals of Other investments	0	0	0
Loss and impairment losses on Other investments		(19)
Total	€ 11	€ (18)	€ 7

Finance Income and Expenses - A

Finance Income and Expenses - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Analysis of income and expense [abstract]
Finance income (expenses)	€ (1,348)	€ (1,495)	€ (907)

Finance Income and Expenses - S

Finance Income and Expenses - Summary of Net Finance Costs/(Income) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Analysis of income and expense [abstract]
Finance income	€ 1,056	€ 1,808	€ 2,543
Finance expenses	(2,404)	(3,303)	(3,450)
Finance income (expenses), net	€ (1,348)	€ (1,495)	€ (907)

Finance Income and Expenses -_2

Finance Income and Expenses - Summary of Finance Income and Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest expenses and other finance expenses:
Interest expenses and other costs relating to bonds	€ (1,012)	€ (1,100)	€ (1,162)
Interest expenses to banks	(72)	(113)	(117)
Interest expenses to others	(204)	(250)	(246)
Total interest expenses	(1,288)	(1,463)	(1,525)
Commissions	(70)	(91)	(95)
Miscellaneous finance expenses	(232)	(256)	(221)
Total other finance expenses	(302)	(347)	(316)
Interest income and other finance income:
Interest income	52	129	151
Income from financial receivables recorded in non-current assets	0	0	0
Income from securities other than investments, recorded in non-current assets	0	0	0
Income from securities other than investments, recorded in current assets	11	14	16
Miscellaneous finance income	61	26	37
Total interest income and other finance income	124	169	204
Total net interest / financial charges	(1,466)	(1,641)	(1,637)
Other components of financial income and expense:
Net exchange gains and losses	(1)	23	246
Net result from derivatives	114	132	114
Net fair value adjustment to fair value hedge derivatives and underlying	(3)	8
Net fair value adjustments to non-hedging derivatives	8	(17)	370
Total other components	118	146	730
Total net financial income (expenses)	(1,348)	(1,495)	(907)
of which, included in the supplementary disclosure on financial instruments	€ (1,161)	€ (1,306)	€ (916)

Finance Income and Expenses -_3

Finance Income and Expenses - Summary Of Financial Assets At Date Of Initial Application Of IFRS 9 (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of financial assets [line items]
Income from negative adjustment of IFRS 9 impairment reserve on financial assets measured through FVTOCI	€ 30
In accordance with IFRS 9 [member]
Disclosure of financial assets [line items]
Income from negative adjustment of IFRS 9 impairment reserve on financial assets measured through FVTOCI	2
Expenses from positive adjustment of IFRS 9 impairment reserve on financial assets measured through FVTOCI	(12)
Reversal of IFRS 9 impairment reserve on financial assets measured through FVTOCI	4
Impairment losses on financial assets other than investments	€ 0	€ 0	€ 0

Finance Income and Expenses -_4

Finance Income and Expenses - Summary of Net Effects relating to Derivative Financial Instruments (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
NET EXCHANGE GAINS AND LOSSES
Exchange gains	€ 265	€ 782	€ 713
Exchange losses	(266)	(759)	(467)
Net exchange gains and losses	(1)	23	246
NET RESULT FROM DERIVATIVES
Income from fair value hedge derivatives	41	66	65
Charges from fair value hedge derivatives			(1)
Net result from fair value hedge derivatives	41	66	64
Positive effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	524	568	649
Negative effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	(446)	(489)	(548)
Net effect of the Reversal of the Reserve of cash flow hedge derivatives to the income statement for the interest rate component	78	79	101
Income from non-hedging derivatives	4	9	13
Charges from non-hedging derivatives	(9)	(22)	(64)
Net result from non-hedging derivatives	(5)	(13)	(51)
Net result from derivatives	114	132	114
Positive fair value adjustment to fair value hedge derivatives	50		50
Negative fair value adjustment to underlying financial assets and liabilities of fair value hedge derivatives	(53)		(45)
Net fair value adjustments	(3)		5
Positive fair value adjustments to underlying financial assets and liabilities of fair value hedge derivatives		95	173
Negative fair value adjustments to fair value hedge derivatives		(87)	(178)
Net fair value adjustments		8	(5)
Net fair value adjustment to fair value hedge derivatives and underlying	(3)	8
NET FAIR VALUE ADJUSTMENTS TO NON-HEDGING DERIVATIVES
Positive fair value adjustments to non-hedging derivatives	48	119	676
Negative fair value adjustments to non-hedging derivatives	(40)	(136)	(306)
Net fair value adjustments to non-hedging derivatives	€ 8	€ (17)	€ 370

Profit (Loss) for the year - Su

Profit (Loss) for the year - Summary Profits (losses) for the Years (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Profit Or Loss [abstract]
Profit (loss) for the year	€ (1,152)	€ 1,287	€ 1,966
Owners of the Parent
Profit (loss) from continuing operations	(1,411)	1,121	1,811
Profit (loss) from Discontinued operations/Non-current assets held for sale			(3)
Profit (loss) for the year attributable to owners of the Parent	(1,411)	1,121	1,808
Non-controlling interests
Profit (loss) from continuing operations	259	166	108
Profit (loss) from Discontinued operations/Non-current assets held for sale			50
Profit (loss) for the year attributable to Non-Controlling interests	€ 259	€ 166	€ 158

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Basic Earnings Per Share (Detail) - EUR (€) € / shares in Units, € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic earnings per share [abstract]
Average number of Ordinary and Savings Shares	21,067,000,000	21,067,000,000	21,067,000,000
Basic earnings per share- Ordinary Shares	€ (0.07)	€ 0.05	€ 0.08
Plus: additional dividends per savings Share		0.01	0.01
Basic earnings per share- Savings Shares	€ (0.07)	€ 0.06	€ 0.09
Basic Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent	€ (1,411)	€ 1,121	€ 1,811
Less: additional dividends for the Savings Shares		(66)	(66)
Earnings from continuing operations for per share calculation basic	€ (1,411)	€ 1,055	€ 1,745
Average number of Ordinary and Savings Shares	21,067,000,000	21,067,000,000	21,067,000,000
Basic earnings (loss) per share from continuing operations- Ordinary Shares	€ (0.07)	€ 0.05	€ 0.08
Plus: additional dividends per savings Share		0.01	0.01
Basic earnings (loss) per share from continuing operations- Savings Shares	€ (0.07)	€ 0.06	€ 0.09
Basic Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale			€ 47
Average number of Ordinary and Savings Shares	21,067,000,000	21,067,000,000	21,067,000,000
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale-Ordinary Shares	€ 0	€ 0	€ 0
Basic earnings (loss) per share from Discontinued operations/ Non-current assets held for sale-Savings Shares	€ 0	€ 0	€ 0
Average number of Ordinary Shares	15,039,368,195	15,039,368,195	15,039,128,128
Average number of Savings Shares	6,027,791,699	6,027,791,699	6,027,791,699
Total	21,067,159,894	21,067,159,894	21,066,919,827
Profit (loss) for the year attributable to Owners of the Parent	€ (1,411)	€ 1,121	€ 1,808
Less: additional dividends for the savings shares (0.011 per share and up to capacity)		(66)	(66)
Profit loss for calculating earnings per share	€ (1,411)	€ 1,055	€ 1,742

Earnings Per Share - Schedule_2

Earnings Per Share - Schedule of Basic Earnings Per Share (Parenthetical) (Detail) - € / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic earnings per share [abstract]
Additional dividends for the savings shares per share basic	€ 0.011	€ 0.011	€ 0.011

Earnings Per Share - Schedule_3

Earnings Per Share - Schedule of Diluted Earnings Per Share (Detail) - EUR (€) € / shares in Units, € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Diluted earnings per share [abstract]
Average number of Ordinary and Savings Shares	€ 22,167	€ 22,167	€ 22,194
Diluted earnings per share-Ordinary Shares	€ (0.06)	€ 0.05	€ 0.08
Plus: additional dividends per savings Share		0.01	0.01
Diluted earnings per share-Savings Shares	€ (0.06)	€ 0.06	€ 0.09
Diluted Earnings Per Share From continuing Operations
Profit (loss) from continuing operations attributable to owners of the Parent	€ (1,411)	€ 1,121	€ 1,811
Dilution effect of stock option plans and convertible bonds	40	32	43
Less: additional dividends for the Savings Shares		(66)	(66)
Diluted earnings per share from continuing operations	(1,371)	1,087	1,788
Average number of Ordinary and Savings Shares	€ 22,167	€ 22,167	€ 22,194
Diluted earnings (loss) per share from continuing operations-Ordinary Shares	€ (0.06)	€ 0.05	€ 0.08
Plus: additional dividends per savings Share		0.01	0.01
Diluted earnings (loss) per share from continuing operations-Savings Shares	€ (0.06)	€ 0.06	€ 0.09
Diluted Earnings Per Share From Discontinued operations/Non-current assets held for sale
Profit (loss) from Discontinued operations/Non-current assets held for sale			€ 47
Dilution effect of stock option plans and convertible bonds	€ 0	€ 0	0
Average number of Ordinary and Savings Shares	€ 22,167	€ 22,167	€ 22,194
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale-Ordinary Shares	€ 0	€ 0	€ 0
Diluted earnings per share from Discontinued operations/ Non-current assets held for sale-Savings Shares	€ 0	€ 0	€ 0
Average number of Ordinary Shares (*)	16,139,213,020	16,139,681,521	16,166,142,282
Average number of Savings Shares	6,027,791,699	6,027,791,699	6,027,791,699
Total	22,167,004,719	22,167,473,220	22,193,933,981
Profit (loss) for the year attributable to Owners of the Parent	€ (1,411)	€ 1,121	€ 1,808
Dilution effect of stock option plans and convertible bonds	40	32	43
Less: additional dividends for the savings shares (0.011 per share and up to capacity)		(66)	(66)
Profit loss for calculating diluted earnings per share	€ (1,371)	€ 1,087	€ 1,785

Earnings Per Share - Schedule_4

Earnings Per Share - Schedule of Diluted Earnings Per Share (Parenthetical) (Detail) - € / shares shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Diluted earnings per share [Line Items]
Additional dividends for the savings shares per share diluted	€ 0.011	€ 0.011	€ 0.011
Convertible bonds [member]
Diluted earnings per share [Line Items]
Convertible bond adjustment	40	32	43

Earnings Per Share - Potential

Earnings Per Share - Potential Future Changes in Share Capital (Detail) - EUR (€) € / shares in Units, € in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of potential changes in share capital [line items]
Share capital	€ 2,008,177
Additional paid-in capital	€ 2,094,000	€ 2,094,000
Ordinary share [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	13,497,406
Share capital	€ 7,423
Additional paid-in capital	€ 5,264
Subscription price per shares	€ 0.94
Ordinary share [member] | 2015 convertible bond [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	1,082,485,386
Share capital	€ 2,000,000
Ordinary share [member] | Convertible bonds [member]
Disclosure of potential changes in share capital [line items]
Share capital	€ 2,000,000
2014 Stock option plan [member] | Ordinary share [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	133,042
Share capital	€ 73
Additional paid-in capital	€ 80
Subscription price per shares	€ 1.15
2015 stock option plan [member] | Ordinary share [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	343,069
Share capital	€ 189
Additional paid-in capital	€ 158
Subscription price per shares	€ 1.01
2016 stock option plan [member] | Ordinary share [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	893,617
Share capital	€ 492
Additional paid-in capital	€ 393
Subscription price per shares	€ 0.99
Stock option plan [member] | Ordinary share [member]
Disclosure of potential changes in share capital [line items]
Number of maximum shares issuable	14,867,134
Share capital	€ 8,177
Additional paid-in capital	€ 5,895

Segment Reporting - Separate Co

Segment Reporting - Separate Consolidated Income Statements by Operating Segment (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating segments [line items]
Revenues by operating segment	€ 18,940	€ 19,828	€ 19,025
Other income	341	523	311
Total operating revenues and other income	19,281	20,351	19,336
Acquisition of goods and services	(8,186)	(8,388)	(7,793)
Employee benefits expenses	(3,105)	(3,626)	(3,106)
of which: accruals to employee severance indemnities	(1)	(6)	(1)
Other operating expenses	(1,259)	(1,208)	(1,083)
of which: write-downs and expenses in connection with credit management and provision charges	(708)	(628)	(479)
Change in inventories	102	35	9
Internally generated assets	570	626	639
Depreciation and amortization	(4,255)	(4,473)	(4,291)
Gains (losses) on disposals of non-current assets	(1)	11	14
Impairment reversals (losses) on non-current assets	(2,586)	(37)	(3)
Operating profit (loss)	561	3,291	3,722
Share of losses (profits) of associates and joint ventures accounted for using the equity method	(1)	(1)	(23)
Other income (expenses) from investments	11	(18)	7
Finance income	1,056	1,808	2,543
Finance expenses	(2,404)	(3,303)	(3,450)
Profit (loss) before tax from continuing operations	(777)	1,777	2,799
Income tax expense	(375)	(490)	(880)
Profit (loss) from continuing operations	(1,152)	1,287	1,919
Profit (loss) from Discontinued operations/Non-current assets held for sale			47
Profit (loss) for the year	(1,152)	1,287	1,966
Attributable to:
Owners of the Parent	(1,411)	1,121	1,808
Non-controlling interests	259	166	158
Third-party [member]
Disclosure of operating segments [line items]
Revenues by operating segment	18,940	19,828	19,025
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Revenues by operating segment	15,031	15,354	15,006
Other income	273	471	259
Total operating revenues and other income	15,304	15,825	15,265
Acquisition of goods and services	(6,360)	(6,235)	(5,785)
Employee benefits expenses	(2,781)	(3,266)	(2,759)
of which: accruals to employee severance indemnities	(1)	(6)	(1)
Other operating expenses	(763)	(704)	(574)
of which: write-downs and expenses in connection with credit management and provision charges	(501)	(468)	(317)
Change in inventories	88	41	16
Internally generated assets	467	510	535
Depreciation and amortization	(3,340)	(3,360)	(3,310)
Gains (losses) on disposals of non-current assets	(13)	(2)	(9)
Impairment reversals (losses) on non-current assets	(2,586)	(37)	(3)
Operating profit (loss)	16	2,772	3,376
Share of losses (profits) of associates and joint ventures accounted for using the equity method	(1)	(1)	(23)
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Revenues by operating segment	3,943	4,502	4,047
Other income	69	52	51
Total operating revenues and other income	4,012	4,554	4,098
Acquisition of goods and services	(1,846)	(2,168)	(2,028)
Employee benefits expenses	(317)	(353)	(336)
Other operating expenses	(491)	(500)	(505)
of which: write-downs and expenses in connection with credit management and provision charges	(208)	(160)	(162)
Change in inventories	14	(6)	1
Internally generated assets	95	108	95
Depreciation and amortization	(915)	(1,114)	(980)
Gains (losses) on disposals of non-current assets	12	14	23
Operating profit (loss)	564	535	368
Operating segments [member] | Other operations [member]
Disclosure of operating segments [line items]
Revenues by operating segment			11
Other income			1
Total operating revenues and other income			12
Acquisition of goods and services	(7)	(4)	(9)
Employee benefits expenses	(6)	(7)	(11)
Other operating expenses	(6)	(5)	(2)
Change in inventories			(8)
Operating profit (loss)	(19)	(16)	(18)
Operating segments [member] | Third-party [member] | Domestic [member]
Disclosure of operating segments [line items]
Revenues by operating segment	14,998	15,328	14,971
Operating segments [member] | Third-party [member] | Brazil [member]
Disclosure of operating segments [line items]
Revenues by operating segment	3,942	4,500	4,044
Operating segments [member] | Third-party [member] | Other operations [member]
Disclosure of operating segments [line items]
Revenues by operating segment			10
Operating segments [member] | Intragroup [member] | Domestic [member]
Disclosure of operating segments [line items]
Revenues by operating segment	33	26	35
Operating segments [member] | Intragroup [member] | Brazil [member]
Disclosure of operating segments [line items]
Revenues by operating segment	1	2	3
Operating segments [member] | Intragroup [member] | Other operations [member]
Disclosure of operating segments [line items]
Revenues by operating segment			1
Adjustments and eliminations [member]
Disclosure of operating segments [line items]
Revenues by operating segment	(34)	(28)	(39)
Other income	(1)
Total operating revenues and other income	(35)	(28)	(39)
Acquisition of goods and services	27	19	29
Employee benefits expenses	(1)
Other operating expenses	1	1	(2)
of which: write-downs and expenses in connection with credit management and provision charges	1
Internally generated assets	8	8	9
Depreciation and amortization		1	(1)
Gains (losses) on disposals of non-current assets		(1)
Operating profit (loss)			(4)
Adjustments and eliminations [member] | Intragroup [member]
Disclosure of operating segments [line items]
Revenues by operating segment	€ (34)	€ (28)	€ (39)

Segment Reporting - Revenues by

Segment Reporting - Revenues by Operating Segment (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating segments [line items]
Total revenues from equipment sales	€ 1,538	€ 1,560	€ 1,378
Total revenues from services	17,379	18,264	17,655
Total revenues on construction contracts	23	4	(8)
Total revenues by operating segment	18,940	19,828	19,025
Third-party [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	1,538	1,560	1,378
Total revenues from services	17,379	18,264	17,655
Total revenues on construction contracts	23	4	(8)
Total revenues by operating segment	18,940	19,828	19,025
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	1,358	1,350	1,136
Total revenues from services	13,650	14,000	13,878
Total revenues on construction contracts	23	4	(8)
Total revenues by operating segment	15,031	15,354	15,006
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	180	211	232
Total revenues from services	3,763	4,291	3,815
Total revenues by operating segment	3,943	4,502	4,047
Operating segments [member] | Other operations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales			11
Total revenues by operating segment			11
Operating segments [member] | Third-party [member] | Domestic [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	1,358	1,350	1,136
Total revenues from services	13,617	13,974	13,843
Total revenues on construction contracts	23	4	(8)
Total revenues by operating segment	14,998	15,328	14,971
Operating segments [member] | Third-party [member] | Brazil [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales	180	210	232
Total revenues from services	3,762	4,290	3,812
Total revenues by operating segment	3,942	4,500	4,044
Operating segments [member] | Third-party [member] | Other operations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales			10
Total revenues by operating segment			10
Operating segments [member] | Intragroup [member] | Domestic [member]
Disclosure of operating segments [line items]
Total revenues from services	33	26	35
Total revenues by operating segment	33	26	35
Operating segments [member] | Intragroup [member] | Brazil [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales		1
Total revenues from services	1	1	3
Total revenues by operating segment	1	2	3
Operating segments [member] | Intragroup [member] | Other operations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales			1
Total revenues by operating segment			1
Adjustments and eliminations [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales		(1)	(1)
Total revenues from services	(34)	(27)	(38)
Total revenues by operating segment	(34)	(28)	(39)
Adjustments and eliminations [member] | Intragroup [member]
Disclosure of operating segments [line items]
Total revenues from equipment sales		(1)	(1)
Total revenues from services	(34)	(27)	(38)
Total revenues by operating segment	€ (34)	€ (28)	€ (39)

Segment Reporting - Purchase of

Segment Reporting - Purchase of Intangible and Tangible Assets by Operating Segment (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating segments [line items]
Purchase of intangible assets	€ 3,647	€ 2,292	€ 1,641
Purchase of tangible assets	2,831	3,477	3,467
Total purchase of intangible and tangible assets	6,478	5,769	5,108
of which capital expenditures	6,408	5,701	4,876
Assets held under finance lease [member]
Disclosure of operating segments [line items]
of which increases in finance leasing contracts	70	68	232
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Purchase of intangible assets	3,385	1,763	1,113
Purchase of tangible assets	2,194	2,842	2,792
Total purchase of intangible and tangible assets	5,579	4,605	3,905
of which capital expenditures	5,518	4,551	3,709
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Purchase of intangible assets	262	529	528
Purchase of tangible assets	637	635	675
Total purchase of intangible and tangible assets	899	1,164	1,203
of which capital expenditures	890	1,150	1,167
Operating segments [member] | Assets held under finance lease [member] | Domestic [member]
Disclosure of operating segments [line items]
of which increases in finance leasing contracts	61	54	196
Operating segments [member] | Assets held under finance lease [member] | Brazil [member]
Disclosure of operating segments [line items]
of which increases in finance leasing contracts	€ 9	€ 14	€ 36

Segment Reporting - Summary of

Segment Reporting - Summary of Headcount by Operating Segment (Detail) - Employee	Dec. 31, 2018	Dec. 31, 2017
Disclosure of operating segments [line items]
Headcount	57,901	59,429
Domestic [member]
Disclosure of operating segments [line items]
Headcount	48,200	49,851
Brazil [member]
Disclosure of operating segments [line items]
Headcount	9,658	9,508
Other operations [member]
Disclosure of operating segments [line items]
Headcount	43	70

Segment Reporting - Assets and

Segment Reporting - Assets and Liabilities by Operating Segment (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Non-current operating assets	€ 54,095		€ 55,623
Current operating assets	5,095		5,249
Total operating assets	59,190		60,872
Investments accounted for using the equity method	16		17
Discontinued operations /Non-current assets held for sale	0		0
Unallocated assets	6,413		7,894
Total Assets	65,619	€ 68,326	68,783
Total operating liabilities	12,596		11,716
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0		0
Unallocated liabilities	31,276		33,284
Equity	21,747	23,695	23,783	€ 23,553	€ 21,249
Total Equity and liabilities	65,619	€ 68,326	68,783
Operating segments [member] | Domestic [member]
Disclosure of operating segments [line items]
Non-current operating assets	48,056		48,850
Current operating assets	4,233		4,363
Total operating assets	52,289		53,213
Investments accounted for using the equity method	16		17
Discontinued operations /Non-current assets held for sale	0		0
Total operating liabilities	10,732		9,829
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0		0
Operating segments [member] | Brazil [member]
Disclosure of operating segments [line items]
Non-current operating assets	6,037		6,769
Current operating assets	874		898
Total operating assets	6,911		7,667
Discontinued operations /Non-current assets held for sale	0		0
Total operating liabilities	1,885		1,855
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0		0
Operating segments [member] | Other operations [member]
Disclosure of operating segments [line items]
Non-current operating assets	3		3
Current operating assets	5		(2)
Total operating assets	8		1
Discontinued operations /Non-current assets held for sale	0		0
Total operating liabilities	48		58
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	0		0
Adjustments and eliminations [member]
Disclosure of operating segments [line items]
Non-current operating assets	(1)		1
Current operating assets	(17)		(10)
Total operating assets	(18)		(9)
Discontinued operations /Non-current assets held for sale	0		0
Total operating liabilities	(69)		(26)
Liabilities directly associated with Discontinued operations/Non-current assets held for sale	€ 0		€ 0

Segment Reporting - Reporting b

Segment Reporting - Reporting by Geographical Area (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating segments [line items]
Breakdown by location	€ 18,940	€ 19,828	€ 19,025
Breakdown by location of operations	54,095	55,623
Customer with Italy [member]
Disclosure of operating segments [line items]
Breakdown by location	13,839	14,064	13,657
Outside Italy [member]
Disclosure of operating segments [line items]
Breakdown by location	5,101	5,764	5,368
Domestic business unit [member]
Disclosure of operating segments [line items]
Breakdown by location	14,711	15,015	14,635
Breakdown by location of operations	47,795	48,591
Customer outside Italy [member]
Disclosure of operating segments [line items]
Breakdown by location	4,229	4,813	€ 4,390
Breakdown by location of operations	€ 6,300	€ 7,032

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Disclosure of operating segments [abstract]
Percentage of consolidated revenues	10.00%

Related Party Transactions an_3

Related Party Transactions and Direction and Coordination Activity - Summary of Separate Consolidated Income Statement (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [Line Items]
Revenues, Transactions of Discontinued Operations			€ (23)
Acquisition of goods and services, Transactions of Discontinued Operations			(14)
Revenue	€ 18,940	€ 19,828	19,025
Other income	341	523	311
Acquisition of goods and services	8,186	8,388	7,793
Employee benefits expenses	3,105	3,626	3,106
Other operating expenses	1,259	1,208	1,083
Finance income	1,056	1,808	2,543
Finance expenses	2,404	3,303	3,450
Profit (loss) from Discontinued operations/Non-current assets held for sale			47
Related parties [member]
Disclosure of transactions between related parties [Line Items]
Revenue	5	118	365
Other income		8	1
Acquisition of goods and services	162	192	252
Employee benefits expenses	92	112	121
Other operating expenses			1
Finance income	8	45	108
Finance expenses	9	49	114
Profit (loss) from Discontinued operations/Non-current assets held for sale			9
Income Statement [member]
Disclosure of transactions between related parties [Line Items]
Other income		4
Income Statement [member] | Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Revenue			1
Acquisition of goods and services	€ 1	1
Income Statement [member] | Other income [member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Contributions governed by partnership agreements and penalties with respect to the Italtel group.
Income Statement [member] | Associates, subsidiaries of associates and joint ventures [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 2	3	10
Acquisition of goods and services	5	22	21
Finance expenses	€ 3	11
Type of contract	Write-down of the financial receivable due from Alfiere.
Income Statement [member] | Other related parties [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 3	115	355
Acquisition of goods and services	157	170	231
Finance income			1
Finance costs	€ 6	38	114
Description of type of contract	Interconnection services, roaming, broadband access fees, supply of "IRU" transmission capacity and software
Income Statement [member] | Other related parties [member] | Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1	1
Income Statement [member] | Other related parties [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Purchase of media space on behalf of the TIM Group and, to a lesser extent, development and delivery of advertising campaigns.
Income Statement [member] | Other related parties [member] | Employee benefits expenses [member]
Disclosure of transactions between related parties [Line Items]
Employee benefits expenses		1	2
Description of type of contract	See the Note "Related party transactions" in the TIM Group Consolidated Financial Statements at December 31, 2017.
Income Statement [member] | Other related parties [member] | Other operating expenses [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Expenses for penalties and contractual breaches towards the Intesa Sanpaolo group
Income Statement [member] | Other related parties [member] | Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Other income		4	1
Income Statement [member] | Other related parties [member] | Other directors or through [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1
Acquisition of goods and services	€ 2		1
Description of type of contract	Amounts recognized for telephone services to be paid back.
Income Statement [member] | Other related parties [member] | Other directors or through [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Fixed-line and mobile voice services and devices.
Income Statement [member] | Other related parties [member] | Mediobanca group [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1	4	7
Acquisition of goods and services		1	1
Finance income	8	15	18
Finance costs	€ 6	15	26
Income Statement [member] | Other related parties [member] | Mediobanca group [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Telephone services, sale of equipment, data network services and Internet accesses.
Income Statement [member] | Other related parties [member] | Mediobanca group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Credit recovery activities.
Income Statement [member] | Other related parties [member] | Mediobanca group [member] | Finance income [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bank accounts, deposits and hedging derivatives.
Income Statement [member] | Other related parties [member] | Mediobanca group [member] | Finance expenses [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Term Loan Facility and Revolving Credit Facility and hedging derivatives.
Income Statement [member] | Other related parties [member] | Former Telco Companies [member]
Disclosure of transactions between related parties [Line Items]
Revenue		110	348
Acquisition of goods and services		69	221
Finance income		30	90
Finance costs		23	88
Description of type of contract	See the Note "Related party transactions" in the TIM Group Consolidated Financial Statements at December 31, 2017.
Income Statement [member] | Other related parties [member] | Former Telco Companies [member] | Revenues [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	See the Note "Related party transactions" in the TIM Group Consolidated Financial Statements at December 31, 2017.
Income Statement [member] | Other related parties [member] | Former Telco Companies [member] | Finance income [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	See the Note "Related party transactions" in the TIM Group Consolidated Financial Statements at December 31, 2017.
Income Statement [member] | Other related parties [member] | Former Telco Companies [member] | Finance expenses [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	See the Note "Related party transactions" in the TIM Group Consolidated Financial Statements at December 31, 2017.
Income Statement [member] | Other related parties [member] | Vivendi group [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services	€ 9	9	8
Income Statement [member] | Other related parties [member] | Vivendi group [member] | Acquisition of goods and services [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames).
Income Statement [member] | Other related parties [member] | Havas group [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services	€ 146	91
Income Statement [member] | Asscom S.r.l. [Member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1	1	1
Type of contract	Insurance brokerage
Income Statement [member] | Italtel group [member]
Disclosure of transactions between related parties [Line Items]
Revenue		1	7
Acquisition of goods and services		17	16
Type of contract	Provision of equipment rental, fixed and mobile telephone and outsourced communication services
Income Statement [member] | NordCom S.p.A. [member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 1	1	1
Acquisition of goods and services			1
Type of contract	Fixed and mobile voice services, equipment, data network connections and outsourced
Income Statement [member] | Italtel Group [Member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Supply and maintenance of switching equipment, software development and platforms upgrading, and customized products and services, as part of TIM offerings to the Italtel group customers, and extension of professional services for the new Multimedia Video Data Center for the provision of the TIM Vision service
Income Statement [member] | NordCom S.p.A. [Member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Supply and development of IT solutions, provision of customized services as part of TIM offerings to end customers, and rental expense for base transceiver station housing
Income Statement [member] | W.A.Y. S.r.l. [member]
Disclosure of transactions between related parties [Line Items]
Acquisition of goods and services	€ 4	€ 4	4
Type of contract	Supply, installation and assistance services for geolocation equipment provided as part of offers to TIM customers and development and integration services provided under the Consip agreement.
Total related parties net of discontinued operations [member]
Disclosure of transactions between related parties [Line Items]
Revenue			342
Other income			1
Acquisition of goods and services			238
Employee benefits expenses			121
Other operating expenses			1
Finance income			108
Finance expenses			€ 114
Revenues	0.00%	0.60%	1.80%
Other income		1.50%	0.30%
Acquisition of goods and services	2.00%	2.30%	3.10%
Employee benefits expenses	3.00%	3.10%	3.90%
Other operating expenses			0.10%
Finance income	0.80%	2.50%	4.20%
Finance expenses	0.40%	1.50%	3.30%
Continuing Operations1[member]
Disclosure of transactions between related parties [Line Items]
Revenue	€ 18,940	€ 19,828	€ 19,025
Other income		523	311
Acquisition of goods and services	8,186	8,388	7,793
Employee benefits expenses	3,105	3,626	3,106
Other operating expenses			1,083
Finance income	1,056	1,808	2,543
Finance expenses	2,404	3,303	3,450
Profit (loss) from Discontinued operations/Non-current assets held for sale			47
Continuing Operations1[member] | Associates, subsidiaries of associates and joint ventures [member]
Disclosure of transactions between related parties [Line Items]
Revenue	2	3	10
Other income		4
Acquisition of goods and services	5	22	21
Finance expenses	3	11
Profit (loss) from Discontinued operations/Non-current assets held for sale			(1)
Continuing Operations1[member] | Other related parties [member]
Disclosure of transactions between related parties [Line Items]
Revenue	3	115	355
Other income		4	1
Acquisition of goods and services	157	170	231
Employee benefits expenses		1	2
Other operating expenses			1
Finance income	8	45	108
Finance expenses	6	38	114
Profit (loss) from Discontinued operations/Non-current assets held for sale			10
Continuing Operations1[member] | Pension funds [member]
Disclosure of transactions between related parties [Line Items]
Employee benefits expenses	78	74	83
Continuing Operations1[member] | Key managers [member]
Disclosure of transactions between related parties [Line Items]
Employee benefits expenses	€ 14	€ 37	36
Discontinued Operations [member] | Transactions [member]
Disclosure of transactions between related parties [Line Items]
Revenue			(23)
Acquisition of goods and services			€ (14)

Related Party Transactions an_4

Related Party Transactions and Direction and Coordination Activity - Summary of Consolidated Statement of Financial Position (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018	Dec. 31, 2016	Dec. 31, 2015
Disclosure of transactions between related parties [Line Items]
Non-current financial assets	€ (1,594)	€ (1,768)	€ (1,768)
Securities other than investments (current assets)	1,126	993
Financial receivables and other current financial assets	340	437
Cash and cash equivalents	(1,917)	(3,575)		€ (3,964)	€ (3,559)
Current financial assets	(3,383)	(5,005)	(5,005)
Non-current financial liabilities	25,059	28,108
Current financial liabilities	5,913	4,756
Trade and miscellaneous receivables and other current assets	4,706	4,959	4,854
Miscellaneous payables and other non-current liabilities	3,297	1,678	1,427
Trade and miscellaneous receivables and other current assets	4,706	4,959	4,854
Trade and miscellaneous payables and other current liabilities	6,901	7,520	€ 7,407
Consolidated statement of financial position [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	3	3
Trade and miscellaneous receivables and other current assets	3	3
Trade and miscellaneous payables and other current liabilities	€ 24	24
Description of type of contract	Payables for contributions to pension funds
Consolidated statement of financial position [member] | Trade and miscellaneous receivables and other current assets [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 19	33
Trade and miscellaneous receivables and other current assets	19	33
Consolidated statement of financial position [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	46	33
Consolidated statement of financial position [member] | Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	1	1
Trade and miscellaneous receivables and other current assets	1	1
Trade and miscellaneous payables and other current liabilities	€ 1	1
Consolidated statement of financial position [member] | Mediobanca group [member]
Disclosure of transactions between related parties [Line Items]
Securities other than investments (current assets)		15
Financial receivables and other current financial assets		38
Non-current financial liabilities		100
Current financial liabilities		163
Consolidated statement of financial position [member] | Mediobanca group [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities		1
Description of type of contract	Credit recovery activities.
Consolidated statement of financial position [member] | Vivendi group [member] | Trade and miscellaneous receivables and other current assets [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 1
Trade and miscellaneous receivables and other current assets	€ 1
Description of type of contract	TIM Show 2018 service and TV series rights.
Consolidated statement of financial position [member] | Vivendi group [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	€ 2	2
Description of type of contract	Purchase of musical and television digital content (TIMmusic and TIMvision) and supply of D&P cloud-based games (TIMgames).
Consolidated statement of financial position [member] | Other directors or through [member] | Trade and miscellaneous receivables and other current assets [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 1	3
Trade and miscellaneous receivables and other current assets	1	3
Consolidated statement of financial position [member] | Other directors or through [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	1
Consolidated statement of financial position [member] | Havas group [member] | Trade and miscellaneous receivables and other current assets [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	17	29
Trade and miscellaneous receivables and other current assets	17	29
Consolidated statement of financial position [member] | Havas group [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	€ 44	30
Consolidated statement of financial position [member] | Other minor companies [member] | Trade and miscellaneous receivables and other current assets [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets		1
Trade and miscellaneous receivables and other current assets		1
Consolidated statement of financial position [member] | Securities other than investments (current assets) [Member] | Mediobanca group [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Bonds issued by Mediobanca.
Consolidated statement of financial position [member] | Financial receivables and other current financial assets [member] | Mediobanca group [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives, loans, financing and finance leases made with Mediobanca.
Consolidated statement of financial position [member] | Non-current financial liabilities [member] | Mediobanca group [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives, loans, financing and finance leases made with Mediobanca.
Consolidated statement of financial position [member] | Current financial liabilities [member] | Mediobanca group [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Hedging derivatives and loans made with Mediobanca.
Other related parties [member] | Consolidated statement of financial position [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	€ 3	3
Related parties [member]
Disclosure of transactions between related parties [Line Items]
Securities other than investments (current assets)		15
Financial receivables and other current financial assets		38
Current financial assets		(53)
Non-current financial liabilities		100
Current financial liabilities		163
Trade and miscellaneous receivables and other current assets	22	36
Miscellaneous payables and other non-current liabilities	1
Trade and miscellaneous receivables and other current assets	22	36
Trade and miscellaneous payables and other current liabilities	73	60
Alfiere SPA [member] | Consolidated statement of financial position [member] | Trade and miscellaneous receivables and other current assets [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	1	1
Trade and miscellaneous receivables and other current assets	€ 1	1
Description of type of contract	Contracts for project management, administration, corporate and compliance services, and sundry chargebacks.
W.A.Y. S.r.l. [member] | Consolidated statement of financial position [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 1	1
Trade and miscellaneous receivables and other current assets	1	1
Trade and miscellaneous payables and other current liabilities	€ 1	1
W.A.Y. S.r.l. [member] | Consolidated statement of financial position [member] | Trade and miscellaneous receivables and other current assets [member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply of fixed-line and mobile services
W.A.Y. S.r.l. [member] | Consolidated statement of financial position [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply, installation and assistance services for geolocation equipment provided as part of offers to TIM customers and development and integration services provided under the Consip agreement.
Movenda S.p.A. [member] | Consolidated statement of financial position [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	€ 1	€ 1
Movenda S.p.A. [member] | Consolidated statement of financial position [member] | Trade and miscellaneous payables and other current liabilities [Member]
Disclosure of transactions between related parties [Line Items]
Description of type of contract	Supply and certification of SIM-cards, software systems.
Discontinued Operations [member]
Disclosure of transactions between related parties [Line Items]
Non-current financial assets	0.00%	0.00%
Securities other than investments (current assets)		1.50%
Financial receivables and other current financial assets		8.70%
Cash and cash equivalents		0.00%
Current financial assets		1.10%
Non-current financial liabilities		0.40%
Current financial liabilities		3.40%
Trade and miscellaneous receivables and other current assets	0.50%	0.70%
Miscellaneous payables and other non-current liabilities	0.00%
Trade and miscellaneous payables and other current liabilities	1.10%	0.80%
Continuing Operations1[member] | Associates, subsidiaries of associates and joint ventures [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous receivables and other current assets	€ 3	€ 3
Trade and miscellaneous receivables and other current assets	3	3
Trade and miscellaneous payables and other current liabilities	3	3
Continuing Operations1[member] | Other related parties [member]
Disclosure of transactions between related parties [Line Items]
Securities other than investments (current assets)		15
Financial receivables and other current financial assets		38
Current financial assets		(53)
Non-current financial liabilities		100
Current financial liabilities		163
Trade and miscellaneous receivables and other current assets	19	33
Miscellaneous payables and other non-current liabilities	1
Trade and miscellaneous receivables and other current assets	19	33
Trade and miscellaneous payables and other current liabilities	46	33
Continuing Operations1[member] | Pension funds [member]
Disclosure of transactions between related parties [Line Items]
Trade and miscellaneous payables and other current liabilities	€ 24	€ 24

Related Party Transactions an_5

Related Party Transactions and Direction and Coordination Activity - Summary of Consolidated Statement of Cash Flows (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 3	€ 135	€ 159
Movenda S.p.A. [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	2	2	2
Other minor companies [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	1	1
Italtel group [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis		132	157
Cash flow [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 6,478	€ 5,769	€ 5,108
Purchase of intangible and tangible assets on an accrual basis	0.00%
Cash flow [member] | Discontinued Operations [member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis		2.30%	3.10%
Cash flow [member] | Associates, subsidiaries of associates and joint ventures [member] | Continuing Operations1[member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 3	€ 135	€ 159
Cash flow [member] | Related parties [member] | Continuing Operations1[member]
Disclosure of transactions between related parties [Line Items]
Purchase of intangible and tangible assets on an accrual basis	€ 3	€ 135	€ 159
Cash flow [member] | Italtel group [member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Purchases of telecommunications equipment
Cash flow [member] | Movenda S.p.A. [member]
Disclosure of transactions between related parties [Line Items]
Type of contract	Information technology services and licenses for Mobile Connect Cardlets

Related Party Transactions an_6

Related Party Transactions and Direction and Coordination Activity - Additional Information (Detail) - EUR (€)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of joint ventures [line items]
Amount used to cover loan losses	€ 3,000,000
Amount written down	11,000,000
Total remuneration to key managers	14,000,000	€ 37,000,000	€ 36,100,000
Short-term remuneration	6,800,000	10,400,000	€ 13,100,000
Reversal of accruals		10,700,000
TIM S.p.A. [member]
Disclosure of joint ventures [line items]
Issued guarantees	1,000,000
Alfiere SPA [member]
Disclosure of joint ventures [line items]
Shareholder loan to joint venture		11,000,000
Key managers [member]
Disclosure of joint ventures [line items]
Contributions paid in to defined contribution plans	€ 119,000	€ 97,000

Related Party Transactions an_7

Related Party Transactions and Direction and Coordination Activity - Summary of Employee Benefits Expenses (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	€ 3,105	€ 3,626	€ 3,106
Consolidated statement of financial position [member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 24	24
Type of contract	Payables for contributions to pension funds
Consolidated statement of financial position [member] | Fontedir [member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	€ 3	3
Consolidated statement of financial position [member] | Telemaco [member]
Disclosure of transactions between related parties [Line Items]
Total trade and miscellaneous payables and other current liabilities	21	21
Employee costs [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	€ 78	74	83
Type of contract	Contributions to pension funds
Employee costs [member] | Fontedir [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	€ 8	10	11
Employee costs [member] | Telemaco [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	66	67	69
Employee costs [member] | Other pension funds [member]
Disclosure of transactions between related parties [Line Items]
Total employee benefits expenses	€ 4	€ (3)	€ 3

Related Party Transactions an_8

Related Party Transactions and Direction and Coordination Activity - Summary of Remuneration to Key Managers (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Classes of employee benefits expense [abstract]
Short-term remuneration	€ 6.8	€ 10.4	€ 13.1
Long-term remuneration	0.5	0.1	1.9
Employment termination benefit incentives	5.6	25.5	12
Share-based payments	1	1	9.1
Total	€ 14	€ 37	€ 36.1

Related Party Transactions an_9

Related Party Transactions and Direction and Coordination Activity - Summary of Remuneration to Key Managers (Parenthetical) (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Employee Salaries And Benefit Expenses [line items]
Short-term remuneration	€ 6.8	€ 10.4	€ 13.1
Long-term remuneration	0.5	0.1	1.9
Share-based payments	1	1	9.1
Employment termination benefit incentives	5.6	25.5	12
Tim Brasil group [member]
Disclosure Of Employee Salaries And Benefit Expenses [line items]
Short-term remuneration	1.1	1.6	1.1
Long-term remuneration		0.1
Share-based payments	0.2	1	€ 0.2
Employment termination benefit incentives	€ 2.4	€ 0.6

Equity Compensation Plans - TIM

Equity Compensation Plans - TIM S.p.A Stock Option Plan - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018€ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of options exercisable at assigned targets	20.00%
Exercise price	€ 0.94
Range One [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	133,042
Strike price	€ 1.15
Range Two [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	343,069
Strike price	€ 1.01
Range Three [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	893,617
Strike price	€ 0.99
Range Four [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share outstanding	13,497,406
Strike price	€ 0.94

Equity Compensation Plans - T_2

Equity Compensation Plans - TIM Participacoes S.A Stock Option Plan - Additional Information (Detail)	Apr. 20, 2018	Apr. 13, 2018	Dec. 31, 2018BRL (R$)	Dec. 31, 2018EUR (€)shares	Dec. 31, 2018BRL (R$)
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares valid				466,514
Percentage of average performance of ordinary shares versus average market performance				70.00%	70.00%
Percentage of cumulative equity free cash flow over period 2018-2020				30.00%	30.00%
Stock options cancelled				383,418	383,418
2012 Tim Participacoes Sa Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted				2,661,752	2,661,752
Date of grant				Sep. 5, 2012	Sep. 5, 2012
Number of shares vested				194,756
INWIT S.p. A [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of share capital		0.07%
INWIT S.p. A [member] | Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Purchase of shares		400,000
2014 Tim Participacoes S.A. Stock Option Plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted				1,687,686	1,687,686
Date of grant				Sep. 29, 2014	Sep. 29, 2014
Number of shares valid				531,972
2016/2019 Special Award [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Net liability				€ 1,000,000
Liabilities from equity-settled share-based payment transactions				€ 800,000
Ordinary shares issued | shares				1,025,640
2016/2019 Special Award [member] | Beneficiaries [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of over performance				1.50%	1.50%
Long term incentive plan 2018 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grants reserved to chief executive 0fficer				€ 30,000,000
Grants reserved to management				€ 55,000,000
2014-2016 Tim Participacoes S.A. Stock Option Plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of vesting requirements				If the performance of the Tim Participações S.A. shares, in the 30 days prior to September 29 of each year, is in last place in that ranking, the participant loses the right to 25% of the options vesting at that time.	If the performance of the Tim Participações S.A. shares, in the 30 days prior to September 29 of each year, is in last place in that ranking, the participant loses the right to 25% of the options vesting at that time.
Vesting period				3 years	3 years
Options validity				6 years	6 years
2015 Tim Participacoes S A Stock Option Plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted				3,355,229	3,355,229
Date of grant				Oct. 16, 2015	Oct. 16, 2015
Number of shares valid				292,523
Number of shares expired			1,277,878	291,949	291,949
Number of shares exercised			510,884	656,268	656,268
Exercise price of share option | R$			R$ 7.6928
Percentage of option price adjustment for ranking			5.00%
2015 Tim Participacoes S A Stock Option Plan [member] | First Wave [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price of share option | R$			R$ 7.6928		R$ 8.7341
Percentage of option price adjustment for ranking			5.00%	3.33%	3.33%
2015 Tim Participacoes S A Stock Option Plan [member] | Second Wave [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price of share option | R$			R$ 7.2879		R$ 8.4625
Percentage of option price adjustment for ranking			10.00%
2015 Tim Participacoes S A Stock Option Plan [member] | Last wave [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price of share option | R$					R$ 7.6074
Percentage of option price adjustment for ranking				10.00%	10.00%
2016 Tim Participacoes SA Stock Option Plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted				3,922,204	3,922,204
Date of grant				Nov. 8, 2016	Nov. 8, 2016
Number of shares valid				895,522
2018 to 2020 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of vesting requirements				The vesting period is 3 years (a third per year) and the company does not have the legal obligation to repurchase or liquidate the shares in cash or in any other form. The portion of shares linked to performance (70%) is granted 1/3 each year, if the performance target is achieved; the remaining portion of shares (30%) is granted 3 years after allocation.	The vesting period is 3 years (a third per year) and the company does not have the legal obligation to repurchase or liquidate the shares in cash or in any other form. The portion of shares linked to performance (70%) is granted 1/3 each year, if the performance target is achieved; the remaining portion of shares (30%) is granted 3 years after allocation.
Vesting period				3 years	3 years
Stock options granted expiration period				3 years	3 years
Percentage of shareholder return				60.00%	60.00%
Percentage of cumulative recurring free cash flow				40.00%	40.00%
Purchase of treasury shares				€ 222,118
2018 to 2020 [member] | Less: Treasury Shares [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of share capital				0.037%	0.037%
2011-2013 Tim Participacoes S.A. Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of vesting requirements				The vesting period is 3 years (a third per year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form.	The vesting period is 3 years (a third per year), the options are valid for 6 years, and the company does not have the legal obligation to repurchase or liquidate the options in cash, or in any other form.
2011-2013 Tim Participacoes S.A. Stock Option Plan [Member] | 2019 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock options considered as vested				33.00%	33.00%
2011-2013 Tim Participacoes S.A. Stock Option Plan [Member] | 2020 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock options considered as vested				66.00%	66.00%
2011 Tim Participacoes S A Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted				2,833,596	2,833,596
Shares exercise period expiration date				Aug. 30, 2017	Aug. 30, 2017
2013 Tim Participacoes S A Stock Option Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted				3,072,418	3,072,418
Date of grant				Jul. 30, 2013	Jul. 30, 2013
Number of shares valid				543,583
2018 Tim Participacoes SA Stock Option Plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares granted	849,932
Date of grant				Apr. 20, 2018	Apr. 20, 2018

Equity Compensation Plans - Fai

Equity Compensation Plans - Fair Value Measurement of the Granted Options and Rights - Details (Detail) - 12 months ended Dec. 31, 2018	EUR (€)€ / shares	BRL (R$)	R$ / shares
2018 to 2020 plan equity component [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | €	€ 0
Nominal value | € / shares	€ 0.63
Expected dividends | €	€ 0
Stock Option Plan 2011 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | R$		R$ 8.84
Stock option plan, volatility	51.73%	51.73%
Period	6	6
Interest rate	11.94%	11.94%
Stock Option Plan 2012 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | R$		R$ 8.96
Stock option plan, volatility	50.46%	50.46%
Period	6	6
Interest rate	8.89%	8.89%
Stock Option Plan 2013 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | R$		R$ 8.13
Stock option plan, volatility	48.45%	48.45%
Period	6	6
Interest rate	10.66%	10.66%
Stock Option Plan 2014 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | R$		R$ 13.42
Stock option plan, volatility	44.60%	44.60%
Period	6	6
Interest rate	10.66%	10.66%
Stock Option Plan 2015 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | R$		R$ 8.45
Stock option plan, volatility	35.50%	35.50%
Period	6	6
Interest rate	16.10%	16.10%
Stock Option Plan 2016 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | R$		R$ 8.1
Stock option plan, volatility	36.70%	36.70%
Period	6	6
Interest rate	11.73%	11.73%
2018 to 2020 plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Nominal value | R$ / shares			R$ 14.41
Stock option plan, volatility	0.00%	0.00%
Period	3	3
Interest rate	0.00%	0.00%
CEO [member] | 2018 to 2020 plan equity component [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | €	€ 0
Nominal value | € / shares	€ 0.51
Expected dividends | €	€ 0
INWIT S.p. A [member] | 2018 to 2020 plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price (euro) | €	€ 0
Nominal value | € / shares	€ 6.208
Expected dividends | €	€ 0.19

Other Information - Summary of

Other Information - Summary of Exchange Rates Used to Translate the Financial Statements of Foreign Operations (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Europe [member] | Bulgaria, Leva [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	1.95580	1.95580	1.95580
Average exchange rates for the year	1.95580	1.95580	1.95580
Europe [member] | Czech Republic, Koruny [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	25.72400	25.53500	27.02100
Average exchange rates for the year	25.64653	26.32658	27.03443
Europe [member] | Switzerland, Francs [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	1.12690	1.17020	1.07390
Average exchange rates for the year	1.15517	1.11171	1.09004
Europe [member] | Turkey, New Lira [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	6.05880	4.54640	3.70720
Average exchange rates for the year	5.69649	4.12109	3.34284
Europe [member] | GBP [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	0.89453	0.88723	0.85618
Average exchange rates for the year	8.88474	0.87640	0.81905
Europe [member] | Romania, New Lei [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	4.66350	4.65850	4.53900
Average exchange rates for the year	4.65441	4.56884	4.49053
Europe [member] | Russia, Rubles [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	79.71500	69.39200	64.30000
Average exchange rates for the year	74.03808	65.90160	74.15831
North America [member] | USD [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	1.14500	1.19930	1.05410
Average exchange rates for the year	1.18121	1.12946	1.10666
Latin America [member] | Venezuelan bolivar fuerte [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates		16.19055	14.23035
Average exchange rates for the year		15.18018	14.90133
Latin America [member] | Venezuelan bolivar soberano [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	729.80267
Average exchange rates for the year	139.15438
Latin America [member] | Bolivia, Bolivianos [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	7.91200	8.28720	7.28383
Average exchange rates for the year	8.16214	7.80453	7.64702
Latin America [member] | Peru, Nuevos Soles [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	3.86300	3.88540	3.54020
Average exchange rates for the year	3.87979	3.68247	3.73505
Latin America [member] | Argentina, Pesos [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	43.15930	22.93100	16.74880
Average exchange rates for the year	32.85850	18.73314	16.33204
Latin America [member] | Chile, Pesos [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	794.37000	737.29000	704.94500
Average exchange rates for the year	756.93992	732.28973	748.49536
Latin America [member] | Colombia, Pesos [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	3,721.81000	3,580.19000	3,169.49000
Average exchange rates for the year	3,488.43046	3,334.88410	3,376.68116
Latin America [member] | BRL [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	4.43664	3.96728	3.43542
Average exchange rates for the year	4.30628	3.60584	3.85935
Other Countries [member] | Israel, New Shekels [member]
Disclosure of Additional Information [Line Items]
Year-end exchange rates	4.26270	4.16350	4.04770
Average exchange rates for the year	4.24360	4.06091	4.24812

Other Information - Summary o_2

Other Information - Summary of Research and Development (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of additional information [abstract]
Research and development costs expensed during the year	€ 44	€ 43	€ 44
Development costs capitalized	1,168	1,949	1,704
Total research and development costs (expensed and capitalized)	€ 1,212	€ 1,992	€ 1,748

Other Information - Additional

Other Information - Additional Information (Detail) € in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)
Disclosure of additional information [abstract]
Amortization of capitalized development costs	€ 820

Other Information - Summary o_3

Other Information - Summary of the Amount of Lease Installments Receivables (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	€ 467	€ 460
Within 1 year [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	89	124
From 2 to 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	244	238
Beyond 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivables	€ 134	€ 98

Other Information - Summary o_4

Other Information - Summary of the Amount of Lease Installments Receivable (Detail) - EUR (€) € in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Additional Information [Line Items]
Amount of lease installments receivable	€ 495	€ 535
Within 1 year [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivable	153	177
From 2 to 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivable	307	298
Beyond 5 years [member]
Disclosure of Additional Information [Line Items]
Amount of lease installments receivable	€ 35	€ 60

Other Information - Summary o_5

Other Information - Summary of Public Funds (Detail) € in Millions	12 Months Ended
	Dec. 31, 2018EUR (€)
Disclosure of public funds [line items]
2018 collections	€ 116
Fondimpresa [member] | Training segment [member]
Disclosure of public funds [line items]
2018 collections	5
Fondirigenti [member] | Training segment [member]
Disclosure of public funds [line items]
2018 collections	1
Infratel [member] | Construction of ultrabroadband infrastructure [member]
Disclosure of public funds [line items]
2018 collections	106
Ministry of Economic Development [member] | Construction of mobile network infrastructure [member]
Disclosure of public funds [line items]
2018 collections	1
Ministry of Economic Development [member] | Technological innovation projects [member]
Disclosure of public funds [line items]
2018 collections	1
MIUR [member] | Research and energy efficiency projects [member]
Disclosure of public funds [line items]
2018 collections	1
Autonomous Province of Trento [member] | Eschooling project [member]
Disclosure of public funds [line items]
2018 collections	€ 1

Events Subsequent to December_2

Events Subsequent to December 31, 2018 - Additional Information (Detail) € in Millions	Jan. 08, 2019EUR (€)	Jan. 31, 2019Tower	Dec. 31, 2018Towersite
Italy [member]
Disclosure of non-adjusting events after reporting period [line items]
Total number of towers		22,000
Infrastructure network agreement [member]
Disclosure of non-adjusting events after reporting period [line items]
Number of sites | site			10,000
Total number of towers owned by two companies, percentage			45.00%
Infrastructure network agreement [member] | Italy [member]
Disclosure of non-adjusting events after reporting period [line items]
Total number of towers			22,000
Telecom Italia S.p.A. [member] | Bond Issuance [member]
Disclosure of non-adjusting events after reporting period [line items]
Bonds	5 years 3 months
Currency	Euro
Amount | €	€ 1,250
Yield	4.125%
Average cost of debt	4.40%
Settlement date	Jan. 11, 2019
Maturity date	Apr. 11, 2024
Coupon	4.00%
Issue price	99.436%
Repayment price	100.00%
Bond yield above reference rate	3.876%
Infrastrutture Wireless Italiane [member] | Infrastructure network agreement [member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of interest owned			60.00%

List of Companies of the Tim _3

List of Companies of the Tim Group - Summary of List of Companies of the Tim Group (Detail)	12 Months Ended
	Dec. 31, 2018shares
Disclosure Of List Of Companies Of The Tim Group [line items]
Currency	The TIM Group consolidated financial statements as at December 31, 2018 are expressed in euro.
TI SPARKLE UK Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE UK Ltd (value-added and networking services)
Head Office	LONDON (UK)
Currency	EUR
Share Capital	3,983,254
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. [member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. (installation and operation of installations and infrastructure for the management and the sale of telecommunications services)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	600,000,000
% ownership	60.0333%
Voting rights hold in associates	60055600.00%
Held by	TIM S.p.A.
INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. [member] | INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	INFRASTRUTTURE WIRELESS ITALIANE S.p.A.. (installation and operation of installations and infrastructure for the management and the sale of telecommunications services)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	600,000,000
% ownership	0.037%
Held by	INFRASTUTTURE WIRELESS ITALIANE S.p.A.
MED-1 SUBMARINE CABLES Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	MED-1 SUBMARINE CABLES Ltd (construction and management of submarine cable Lev1)
Head Office	RAMAT GAN (ISRAEL)
Currency	ILS
Share Capital	55,886,866
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
NOVERCA S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	NOVERCA S.r.l. (development and provision of services in the TLC and multimedia sector in Italy and abroad)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	100.00%
Held by	TIM S.p.A.
OLIVETTI S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	OLIVETTI S.p.A. (production and sale of office equipment and information technology services)
Head Office	IVREA (TURIN- ITALY)
Currency	EUR
Share Capital	10,000,000
% ownership	100.00%
Held by	TIM S.p.A.
PERSIDERA S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	PERSIDERA S.p.A. (purchase, sale and maintenance of systems for repair work and radio and television broadcasting)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	21,428,572
% ownership	70.00%
Held by	TIM S.p.A.
TELECOM ITALIA SAN MARINO S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA SAN MARINO S.p.A. (San Marino telecommunications management)
Head Office	BORGO MAGGIORE (REPUBLIC OF SAN MARINO)
Currency	EUR
Share Capital	1,808,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA SPARKLE S.p.A. (completion and management of telecommunications services for public and private use)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	200,000,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA TRUST TECHNOLOGIES S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA TRUST TECHNOLOGIES S.r.l. (other operations related to non-classified IT services)
Head Office	POMEZIA (ROME - ITALY)
Currency	EUR
Share Capital	7,000,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA VENTURES S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA VENTURES S.r.l. (investment holding company)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	100.00%
Held by	TIM S.p.A.
TELECONTACT CENTER S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECONTACT CENTER S.p.A. (telemarketing services)
Head Office	NAPLES (ITALY)
Currency	EUR
Share Capital	3,000,000
% ownership	100.00%
Held by	TIM S.p.A.
TELEFONIA MOBILE SAMMARINESE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELEFONIA MOBILE SAMMARINESE S.p.A. (development and management of mobile telecommunications plants and services)
Head Office	BORGO MAGGIORE (REPUBLIC OF SAN MARINO)
Currency	EUR
Share Capital	78,000
% ownership	51.00%
Held by	TELECOM ITALIA SAN MARINO S.p.A.
TELENERGIA S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELENERGIA S.r.l. (import, export, purchase, sale and trade of electricity)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	50,000
% ownership	100.00%
Held by	TIM S.p.A.
TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELSY ELETTRONICA E TELECOMUNICAZIONI S.p.A. (production and sale of equipment and systems for crypto telecommunications)
Head Office	TURIN (ITALY)
Currency	EUR
Share Capital	390,000
% ownership	100.00%
Held by	TIM S.p.A.
TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE AMERICAS Inc. (managed bandwidth services)
Head Office	MIAMI (USA)
Currency	USD
Share Capital	10,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE ARGENTINA S.A. [member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE ARGENTINA S.A. (managed bandwidth services)
Head Office	BUENOS AIRES (ARGENTINA)
Currency	ARS
Share Capital	9,998,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE AUSTRIA GmbH [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE AUSTRIA GmbH (telecommunications services)
Head Office	VIENNA (AUSTRIA)
Currency	EUR
Share Capital	2,735,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BELGIUM S.P.R.L.-B.V.B.A [member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BELGIUM S.P.R.L.—B.V.B.A (telecommunications services)
Head Office	BRUSSELS (BELGIUM)
Currency	EUR
Share Capital	2,200,000
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BELGIUM S.P.R.L.-B.V.B.A [member] | TI SPARKLE UK Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BELGIUM S.P.R.L.-B.V.B.A (telecommunications services)
Head Office	BRUSSELS (BELGIUM)
Currency	EUR
Share Capital	2,200,000
% ownership	0.0001%
Held by	TI SPARKLE UK Ltd
TI SPARKLE BOLIVIA SRL [member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BOLIVIA SRL (managed bandwidth services)
Head Office	LA PAZ (BOLIVIA)
Currency	BOB
Share Capital	1,747,600
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BOLIVIA SRL [member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BOLIVIA SRL (managed bandwidth services)
Head Office	LA PAZ (BOLIVIA)
Currency	BOB
Share Capital	1,747,600
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE BRASIL PARTICIPACOES Ltda [member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL PARTICIPACOES Ltda (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	71,563,866
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE BRASIL PARTICIPACOES Ltda [member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL PARTICIPACOES Ltda (investment holding company)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	71,563,866
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE BRASIL TELECOMUNICACIONES Ltda [member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL TELECOMUNICACIONES Ltda (managed bandwidth services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	69,337,363
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE BRASIL TELECOMUNICACIONES Ltda [member] | TI SPARKLE BRASIL PARTICIPACOES Ltda [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BRASIL TELECOMUNICACIONES Ltda (managed bandwidth services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	69,337,363
% ownership	99.9999%
Held by	TI SPARKLE BRASIL PARTICIPACOES Ltda
TI SPARKLE BULGARIA EOOD [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE BULGARIA EOOD (telecommunications services)
Head Office	SOFIA (BULGARIA)
Currency	BGN
Share Capital	100,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKL E S.p.A.
TI Sparkle Chile S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE CHILE S.p.A. (managed bandwidth services)
Head Office	SANTIAGO (CHILE)
Currency	CLP
Share Capital	5,852,430,960
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE COLOMBIA Ltda [member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE COLOMBIA Ltda (managed bandwidth services)
Head Office	BOGOTA' (COLOMBIA)
Currency	COP
Share Capital	5,246,906,000
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE COLOMBIA Ltda [member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE COLOMBIA Ltda (managed bandwidth services)
Head Office	BOGOTA' (COLOMBIA)
Currency	COP
Share Capital	5,246,906,000
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE CZECH S.R.O. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE CZECH S.R.O. (telecommunications services)
Head Office	PRAGUE (CZECH REPUBLIC)
Currency	CZK
Share Capital	6,720,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI Sparkle France S.A.S. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE FRANCE S.A.S. (installation and management of telecommunications services for fixed network and related activities)
Head Office	PARIS (FRANCE)
Currency	EUR
Share Capital	18,295,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE GERMANY GmbH [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE GERMANY GmbH (telecommunications services)
Head Office	FRANKFURT (GERMANY)
Currency	EUR
Share Capital	25,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE GREECE S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE GREECE S.A. (telecommunications services)
Head Office	ATHENS (GREECE)
Currency	EUR
Share Capital	368,760
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
W.A.Y. S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	W.A.Y. S.r.l. (development and sale of geolocation products and systems for security and logistics)
Head Office	TURIN (ITALY)
Currency	EUR
Share Capital	136,383
% ownership	39.9999%
Held by	OLIVETTI S.p.A.
Wiman S.r.l [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	WIMAN S.r.l. (development, management and implementation of platforms for social-based Wi-Fiauthentications)
Head Office	MATTINATA (FOGGIA-ITALY)
Currency	EUR
Share Capital	22,233
Held by	TELECOM ITALIA VENTURES S.r.l.
CONSORZIO ANTENNA MONTECONERO [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CONSORZIO ANTENNA COLBUCCARO (installation, management and maintenance ofmetal pylons complete with workstations for device recovery)
Head Office	ASCOLI PICENO (ITALY)
Currency	EUR
Share Capital	121,000
% ownership	20.00%
Held by	PERSIDERA S.p.A.
CONSORZIO EMITTENTI RADIOTELEVISIVE [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CONSORZIO EMITTENTI RADIOTELEVISIVE (broadcasting activities)
Head Office	BOLOGNA (ITALY)
Currency	EUR
Share Capital	119,309
% ownership	18.66%
Held by	PERSIDERA S.p.A.
CONSORZIO HEALTH INNOVATION HUB (IN LIQUIDATION) [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CONSORZIO HEALTH INNOVATION HUB (IN LIQUIDATION) (development of the market for systems and services for the sector social and health)
Head Office	TRENTO (ITALY)
Currency	EUR
Share Capital	48,000
% ownership	12.50%
Held by	TIM S.p.A.
Dahlia TV S.p.A [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	DAHLIA TV S.p.A. (IN LIQUIDATION) (pay-per-view services)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	11,318,833
% ownership	10.08%
Held by	TIM S.p.A.
FIN.PRIV. S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	FIN.PRIV. S.r.l. (financial company)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	20,000
% ownership	14.29%
Held by	TIM S.p.A.
IGOON. S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	IGOON. S.r.l. (development of mobile platforms and applications able to provide user with innovative solutions for organizing and sharing all their digital content)
Head Office	NAPLES (ITALY)
Currency	EUR
Share Capital	16,498
% ownership	14.2805%
Held by	TELECOM ITALIA VENTURES S.r.l
INNAAS S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	INNAAS S.r.l. (design, development and sale of high-tech software and hardware)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	108,700
% ownership	15.2548%
Held by	TELECOM ITALIA VENTURES S.r.l.
Italibiz COM Inc [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	ITALBIZ.COM Inc. (internet services)
Head Office	DELAWARE (USA)
Currency	USD
Share Capital	4,721
% ownership	19.50%
Held by	TIM S.p.A.
MIX S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	MIX S.r.l. (internet service provider)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	1,000,000
% ownership	11.0937%
Held by	TIM S.p.A.
Alfiere SPA [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	ALFIERE S.p.A. (*) (real estate management)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	9,250,000
% ownership	50.00%
Held by	TIM S.p.A.
Aree Urbane Srl [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	AREE URBANE S.r.l. (IN LIQUIDATION) (real estate management)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	100,000
% ownership	32.62%
Held by	TIM S.p.A.
ASSCOM INSURANCE BROKERS S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	ASSCOM INSURANCE BROKERS S.r.l. (insurance brokerage)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	100,000
% ownership	20.00%
Held by	TIM S.p.A.
CLOUDESIRE.COM S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CLOUDESIRE.COM S.r.l. (design, implementation and marketing of a marketplace platform for the sale of a software as-a-serviceapplications)
Head Office	PISA (ITALY)
Currency	EUR
Share Capital	11,671
Held by	TELECOM ITALIA VENTURES S.r.l.
CONSORZIO ANTENNA TOLENTINO [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CONSORZIO ANTENNA TOLENTINO (installation, management and maintenance of pylons complete with workstation for device recovery)
Head Office	RECANATI (MACERATA- ITALY)
Currency	EUR
Share Capital	86,000
% ownership	16.6674%
Held by	PERSIDERA S.p.A.
Consorzio Antenna Monteconero [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CONSORZIO ANTENNA MONTECONERO (multimedia services)
Head Office	SIROLO (ANCONA-ITALY)
Currency	EUR
Share Capital	51,100
% ownership	22.2211%
Held by	PERSIDERA S.p.A.
Consorzio E O [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CONSORZIO E O (IN LIQUIDATION) (training services)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	30,987
% ownership	50.00%
Held by	TIM S.p.A.
Eco Four Cloud Srl [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	ECO4CLOUD S.r.l. (development, production and sale of innovative products or services with high technological value
Head Office	RENDE (COSENZA-ITALY)
Currency	EUR
Share Capital	19,532
Held by	TELECOM ITALIA VENTURES S.r.l.
KOPJRA S.r.l. [Member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	KOPJRA S.r.l. (development, production and sale of innovative products or services with high-tech value)
Head Office	SCHIO (VICENZA-ITALY)
Currency	EUR
Share Capital	16,207
% ownership	22.8491%
Held by	TELECOM ITALIA VENTURES S.r.l.
Movenda S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	MOVENDA S.p.A. (design, construction and diffusion of internet sites, products and computer media)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	133,333
% ownership	24.9998%
Held by	TELECOM ITALIA FINANCE SA
NordCom S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	NORDCOM S.p.A. (application service provider)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	5,000,000
% ownership	42.00%
Held by	TIM S.p.A.
Oil Project Srl [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	OILPROJECT S.r.l. (research, development, marketing and patenting of all intellectual property related to technology, information technology and TLC)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	13,556
Held by	TELECOM ITALIA VENTURES S.r.l.
Pedius Srl [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	PEDIUS S.r.l. (implementation of specialized telecommunications applications, telecommunications services over telephone connections, VoIP services)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	181
Held by	TELECOM ITALIA VENTURES S.r.l.
Tiglio L Srl [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIGLIO I S.r.l. (real estate management)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	5,255,704
% ownership	47.8019%
Held by	TIM S.p.A.
Tiglio I Srl [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIGLIO II S.r.l. (IN LIQUIDATION) (real estate management)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	49.47%
Held by	TIM S.p.A.
ADVANCED CARING CENTER S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	ADVANCED CARING CENTER S.r.l. (telemarketing, market research and surveys activities and development)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	600,000
% ownership	100.00%
Held by	TELECONTACT CENTER S.p.A.
CD FIBER S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	CD FIBER S.r.l. (design, construction, maintenance and management of network infrastructure services and high-speed electronic communication systems)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	50,000
% ownership	100.00%
Held by	TIM S.p.A.
FLASH FIBER S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	FLASH FIBER S.r.l. (development, implementation, maintenance and supply of the fiber network in Italy)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	30,000
% ownership	80.00%
Held by	TIM S.p.A.
H.R. SERVICES S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	H.R. SERVICES S.r.l. (personnel training and services)
Head Office	L'AQUILA (ITALY)
Currency	EUR
Share Capital	500,000
% ownership	100.00%
Held by	TIM S.p.A.
TIM S.p.A [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	11,677,002,855
TI Sparkle Israel Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE ISRAEL Ltd (international wholesale telecommunication services)
Head Office	RAMAT GAN (ISRAEL)
Currency	ILS
Share Capital	1,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE NORTH AMERICA. INC. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE NORTH AMERICA. INC. (telecommunications and promotional services)
Head Office	NEW YORK (USA)
Currency	USD
Share Capital	15,550,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE NETHERLANDS B.V. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE NETHERLANDS B.V. (telecommunications services)
Head Office	AMSTERDAM (NETHERLANDS)
Currency	EUR
Share Capital	18,200
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE PANAMA S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE PANAMA S.A. (managed bandwidth services)
Head Office	PANAMA
Currency	USD
Share Capital	10,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE PERU' S.A. [member] | TI SPARKLE IRELAND TELECOMMUNICATIONS Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE PERU’ S.A. (managed bandwidth services)
Head Office	LIMA (PERÙ)
Currency	PEN
Share Capital	57,101,788
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE PERU' S.A. [member] | TI SPARKLE AMERICAS Inc. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE PERU’ S.A. (managed bandwidth services)
Head Office	LIMA (PERÙ)
Currency	PEN
Share Capital	57,101,788
% ownership	0.0001%
Held by	TI SPARKLE AMERICAS Inc.
TI SPARKLE PUERTO RICO LLC [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE PUERTO RICO LLC (managed bandwidth services)
Head Office	SAN JUAN (PUERTO RICO)
Currency	USD
Share Capital	50,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TT SPARKLE ROMANIA S.R.L. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE ROMANIA S.R.L. (telecommunications services)
Head Office	BUCHAREST (ROMANIA)
Currency	RON
Share Capital	3,021,560
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI Sparkle Russia LLC [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE RUSSIA LLC (telecommunications services)
Head Office	MOSCOW (RUSSIA)
Currency	RUB
Share Capital	8,520,000
% ownership	99.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE UK Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE RUSSIA LLC (telecommunications services)
Head Office	MOSCOW (RUSSIA)
Currency	RUB
Share Capital	8,520,000
% ownership	1.00%
Held by	TI SPARKLE UK Ltd
TI SPARKLE SINGAPORE PTE. Ltd [member] | TELECOM ITALIA SPARKLE S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE SINGAPORE PTE. Ltd (telecommunications services)
Head Office	SINGAPORE
Currency	USD
Share Capital	5,121,120
% ownership	99.9999%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE SINGAPORE PTE. Ltd [member] | TI SPARKLE NORTH AMERICA. INC. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE SINGAPORE PTE. Ltd (telecommunications services)
Head Office	SINGAPORE
Currency	USD
Share Capital	5,121,120
% ownership	0.0001%
Held by	TI SPARKLE NORTH AMERICA. INC.
TI SPARKLE SLOVAKIA S.R.O. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE SLOVAKIA S.R.O. (telecommunications services)
Head Office	BRATISLAVA (SLOVAKIA)
Currency	EUR
Share Capital	300,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE SPAIN TELECOMMUNICATIONS SL [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE SPAIN TELECOMMUNICATIONS SL (telecommunications services)
Head Office	MADRID (SPAIN)
Currency	EUR
Share Capital	1,687,124
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE St. Croix LLC [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE St. Croix LLC (managed bandwidth services)
Head Office	VIRGIN ISLANDS (USA)
Currency	USD
Share Capital	10,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE SWITZERLAND GmbH [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE SWITZERLAND GmbH (telecommunications services)
Head Office	ZURICH (SWITZERLAND)
Currency	CHF
Share Capital	2,000,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE TURKEY TELEKOMUNIKASYON ANONIM SIRKETI [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE TURKEY TELEKOMÜNIKASYON ANONIM SIRKETI (telecommunications services)
Head Office	YENISBONA (ISTANBUL- TURKEY)
Currency	TRY
Share Capital	65,000,000
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TI SPARKLE VENEZUELA C.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TI SPARKLE VENEZUELA C.A. (managed bandwidth service)
Head Office	CARACAS (VENEZUELA)
Currency	VES
Share Capital	10
% ownership	100.00%
Held by	TELECOM ITALIA SPARKLE S.p.A.
TIMB2 S.r.l. [member] | PERSIDERA S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIMB2 S.r.l. (management of television frequency user rights)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	99.00%
Held by	PERSIDERA S.p.A.
TIMB2 S.r.l. [member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIMB2 S.r.l. (management of television frequency user rights)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	10,000
% ownership	1.00%
Held by	TIM S.p.A.
TIMVISION S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIMVISION S.r.l. (production, co-production, conception and creation of programs, films and audiovisual content, including multimedia and interactive content)
Head Office	ROME (ITALY)
Currency	EUR
Share Capital	50,000
% ownership	100.00%
Held by	TIM S.p.A.
TN FIBER S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TN FIBER S.r.l. (design, construction, maintenance and supply of optical network access to users in the province of Trento)
Head Office	TRENTO(ITALY)
Currency	EUR
Share Capital	55,918,000
% ownership	100.00%
Held by	TIM S.p.A.
TIM BRASIL SERVICOS E PARTICIPACOES S.A. [member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A. (investment holding company)
Head Office	RIO DEJANEIRO (BRAZIL)
Currency	BRL
Share Capital	7,169,029,859
% ownership	0.0001%
Held by	TIM S.p.A.
TIM BRASIL SERVICOS E PARTICIPACOES S.A. [member] | Telecom Italia Finance S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A. (investment holding company)
Head Office	RIO DEJANEIRO (BRAZIL)
Currency	BRL
Share Capital	7,169,029,859
% ownership	99.9999%
Held by	TELECOM ITALIA FINANCE S.A.
TIM PARTICIPACOES S.A. [member] | TIM BRASIL SERVICOS E PARTICIPACOES S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIM PARTICIPAÇÕES S.A. (investment holding company)
Head Office	RIO DEJANEIRO (BRAZIL)
Currency	BRL
Share Capital	9,913,414,422
% ownership	66.5819%
Voting rights hold in associates	66603500.00%
Held by	TIM BRASIL SERVIÇOS E PARTICIPAÇÕES S.A.
TIM PARTICIPACOES S.A. [member] | TIM PARTICIPACOES S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIM PARTICIPAÇÕES S.A. (investment holding company)
Head Office	RIO DEJANEIRO (BRAZIL)
Currency	BRL
Share Capital	9,913,414,422
% ownership	0.0324%
Held by	TIM PARTICIPAÇÕES S.A.
Tim S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIM S.A. (telecommunications services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	13,476,717,765
% ownership	100.00%
Held by	TIM PARTICIPAÇÕES S.A.
OLIVETTI DEUTSCHLAND GmbH [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	OLIVETTI DEUTSCHLAND GmbH (sale of office equipment and supplies)
Head Office	NURNBERG (GERMANY)
Currency	EUR
Share Capital	25,600,000
% ownership	100.00%
Held by	OLIVETTI S.p.A.
OLIVETTI SCUOLA DIGITALE S.r.l [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	OLIVETTI SCUOLA DIGITALE s.R.L. (formerly ALFABOOK S.r.l.) (on-line sale of digital texts)
Head Office	TURIN (ITALY)
Currency	EUR
Share Capital	100,000
% ownership	100.00%
Held by	OLIVETTI S.p.A.
OLIVETTI UK Ltd [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	OLIVETTI UK Ltd (sale of office equipment and supplies)
Head Office	NORTHAMPTON (UK)
Currency	GBP
Share Capital	6,295,712
% ownership	100.00%
Held by	OLIVETTI S.p.A.
Telecom Italia Capital S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA CAPITAL S.A. (financial company)
Head Office	LUXEMBOURG (LUXEMBOURG)
Currency	EUR
Share Capital	2,336,000
% ownership	100.00%
Held by	TIM S.p.A.
Telecom Italia Finance S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA FINANCE S.A.(financial company)
Head Office	LUXEMBOURG (LUXEMBOURG)
Currency	EUR
Share Capital	1,818,691,979
% ownership	100.00%
Held by	TIM S.p.A.
TELECOM ITALIA LATAM PARTICIPACOES E GESTAO ADMINISTRATIVA Ltda [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TELECOM ITALIA LATAM PARTICIPACOES E GESTAO ADMINISTRATIVA Ltda (provision of telecommunications and representation services)
Head Office	SAO PAULO (BRAZIL)
Currency	BRL
Share Capital	118,925,803
% ownership	100.00%
Held by	TIM S.p.A.
TIAUDIT COMPLIANCE LATAM S.A. [member] | TIM S.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIAUDIT COMPLIANCE LATAM S.A. (IN LIQUIDATION) (internal auditing services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	1,500,000
% ownership	69.9996%
Held by	TIM S.p.A.
TIAUDIT COMPLIANCE LATAM S.A. [member] | TIM BRASIL SERVICOS E PARTICIPACOES S.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIAUDIT COMPLIANCE LATAM S.A. (IN LIQUIDATION) (internal auditing services)
Head Office	RIO DE JANEIRO (BRAZIL)
Currency	BRL
Share Capital	1,500,000
% ownership	30.0004%
Held by	TIM BRASIL SERVICOS E PARTICIPACOES S.A.
TIESSE S.c.p.A. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIESSE S.c.p.A. (installation and assistance for electronic, IT, telematics and telecommunications equipment)
Head Office	IVREA (TURIN-ITALY)
Currency	EUR
Share Capital	103,292
% ownership	61.00%
Held by	OLIVETTI S.p.A.
TIM TANK S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	TIM TANK S.r.l. (fund and securities investments)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	18,600,000
% ownership	100.00%
Held by	TIM S.p.A.
4G RETAIL S.r.l. [member]
Disclosure Of List Of Companies Of The Tim Group [line items]
Subsidiaries consolidated line-by-line	4G RETAIL S.r.l. (sale of fixed and mobile telecommunications products and services and all analog and digital broadcasting equipment)
Head Office	MILAN (ITALY)
Currency	EUR
Share Capital	2,402,241
% ownership	100.00%
Held by	TIM S.p.A.