SPRINT 10-Q 7 Aug 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Jun. 30, 2018	Aug. 06, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	S
Entity Registrant Name	SPRINT CORP
Entity Central Index Key	101,830
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		4,068,421,433

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018
Current Assets
Cash and Cash Equivalents	$ 4,378	$ 6,610
Short-term Investments	4,008	2,354
Accounts and notes receivable, net	3,492	3,711
Device and accessory inventory	622	1,003
Prepaid expenses and other current assets	895	575
Total current assets	13,395	14,253
Property, plant and equipment, net	20,538	19,925
Costs to acquire a customer contract	1,294
Intangible assets
Goodwill	6,586	6,586
FCC licenses and other	41,368	41,309
Definite-lived intangible assets, net	2,245	2,465
Other assets	1,023	921
Total assets	86,449	85,459
Current Liabilities
Accounts payable	3,143	3,409
Accrued expenses and other current liabilities	3,658	3,962
Current portion of long-term debt, financing and capital lease obligations	4,846	3,429
Total current liabilities	11,647	10,800
Long-term debt, financing and capital lease obligations	35,771	37,463
Deferred tax liabilities	7,704	7,294
Other liabilities	3,382	3,483
Total liabilities	58,504	59,040
Commitments and contingencies
Shareholders' Equity
Common stock, voting, par value $0.01 per share, 9.0 billion authorized, 4.013 billion and 4.005 billion issued, respectively	40	40
Paid-in capital	27,938	27,884
Treasury shares, at cost	4	0
Accumulated deficit	236	(1,255)
Accumulated other comprehensive loss	(317)	(313)
Total stockholders' equity	27,893	26,356
Stockholders' Equity Attributable to Noncontrolling Interest	52	63
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	27,945	26,419
Liabilities and Equity	$ 86,449	$ 85,459

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts Receivable, Current	$ 283	$ 409
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common shares, shares authorized	9,000,000,000	9,000,000,000
Common Stock, Shares, Issued	4,010,000,000	4,005,000,000

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Revenue, Net [Abstract]
Sales Revenue, Services, Net	$ 5,740	$ 6,071
Revenue, equipment sales, net	1,173	1,187
Revenue, equipment rentals, net	1,212	899
Net operating revenues	8,125	8,157
Net operating expenses
Cost of Services (exclusive of depreciation and amortization included below)	1,677	1,709
Cost of equipment sales	1,270	1,545
Cost of equipment rentals	124	112
Selling, general and administrative	1,867	1,938
Depreciation, network and other	1,023	977
Depreciation, equipment rentals	1,136	854
Amortization	171	223
Other, net	42	(364)
Total costs and expenses	7,310	6,994
Operating Income	815	1,163
Other (expense) income
Interest Expense	(637)	(613)
Other income, net	42	(52)
Nonoperating Expense	(595)	(665)
Loss (income) before income taxes	220	498
Income tax benefit	(47)	(292)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	173	206
Net Income (Loss) Attributable to Noncontrolling Interest	3	0
Net Income (Loss) Attributable to Parent	$ 176	$ 206
Basic net (loss) income per common share	$ 0.04	$ 0.05
Diluted net (loss) income per common share	$ 0.04	$ 0.05
Basic weighted average common shares outstanding	4,010	3,993
Diluted weighted average common shares outstanding	4,061	4,076
Other comprehensive (loss) income, net of tax:
Net unrealized holding gains on securities and other	$ (8)	$ 5
Net unrealized holding gains (losses) on derivatives	10	(9)
Net unrecognized net periodic pension and other postretirement benefits	2	0
Cumulative Effect of New Accounting Pronouncement	(8)
Other comprehensive income	(4)	(4)
Comprehensive (loss) income	$ 169	$ 202

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 4,425	$ 2,550
Cash flows from operating activities
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	173	206
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	2,330	2,054
Bad debt expense	57	102
Share-based and long-term incentive compensation expense	40	41
Deferred income tax benefit	39	282
Gains from asset dispositions and exchanges	0	479
Call premiums paid on debt redemptions	0	(129)
Loss on early extinguishment of debt	0	66
Amortization and accretion of long-term debt premiums and discounts	(33)	(51)
Loss on Disposition of Property Plant Equipment	124	293
Other changes in assets and liabilities:
Accounts and notes receivable	273	(53)
Deferred purchase price from sale of receivables	(170)	(375)
Inventories and other current assets	421	181
Accounts payable and other current liabilities	(766)	(474)
Non-current assets and liabilities, net	(197)	73
Other, net	139	58
Net cash provided by operating activities	2,430	1,924
Cash flows from investing activities
Capital expenditures - network and other	(1,132)	(1,151)
Capital expenditures - leased devices	(1,817)	(1,359)
Expenditures relating to FCC licenses	(59)	(13)
Proceeds from sales and maturities of short-term investments	810	2,594
Purchases of short-term investments	(2,464)	(1,499)
Proceeds from sales of assets and FCC Licenses	133	101
Other, net	(10)	(1)
Net Cash Used in Investing Activities	(4,369)	(953)
Cash flows from financing activities
Proceeds from debt and financings	1,370	902
Repayments of debt and capital lease obligations	(1,415)	(2,121)
Debt financing costs	248	0
Other, net	(2)	(15)
Net cash provided by (used in) financing activities	(295)	(1,363)
Net decrease in cash and cash equivalents		(392)
Cash, Cash Equivalents, Restricted Cash, Restricted Cash Equivalents, Period Increase (Decrease)	(2,234)	(392)
Cash and cash equivalents, beginning of period	6,610	2,942
Cash and cash equivalents, end of period	4,378	2,550
Proceeds from Sale and Collection of Receivables	$ 170	375
Accounting Standards Update 2016-15 [Member]
Cash flows from investing activities
Net Cash Used in Investing Activities		(2)
Cash flows from financing activities
Net cash provided by (used in) financing activities		$ 129

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]
Total stockholders' equity	$ 26,356			$ 0
Net Income (Loss) Attributable to Parent	176
Balance (in shares) at Mar. 31, 2018		4,005
Beginning Balance at Mar. 31, 2018	26,419	$ 40	$ 27,884		$ (1,255)	$ (313)	$ 63
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	173						(3)
Other Comprehensive Income, Other, Net of Tax						4
Stock Issued During Period, Shares, New Issues		8
Stock Issued During Period, Value, New Issues	(2)		2
Stock Issued During Period, Shares, Treasury Stock Reissued				1
Stock Issued During Period, Value, Treasury Stock Reissued				$ (4)
Share-based compensation expense	40		40
Capital contribution by SoftBank	1		1
Cumulative effect of accounting changes	1,307				1,315	(8)
Other, net	3		3
Increase (decrease) attributable to noncontrolling interests	0		8				(8)
Balance (in shares) at Jun. 30, 2018		4,013		1
Ending Balance at Jun. 30, 2018	27,945	$ 40	$ 27,938		$ 236	$ (317)	$ 52
Total stockholders' equity	$ 27,893			$ (4)

Basis of Presentation

Basis of Presentation	3 Months Ended
	Jun. 30, 2018
Nature of Operations [Abstract]
Basis of Presentation	Basis of Presentation and Other Information Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X for interim financial information. All normal recurring adjustments considered necessary for a fair presentation have been included. Certain disclosures normally included in annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) have been omitted. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes contained in our annual report on Form 10-K for the year ended March 31, 2018 . Unless the context otherwise requires, references to "Sprint," "we," "us," "our" and the "Company" mean Sprint Corporation and its consolidated subsidiaries for all periods presented, and references to "Sprint Communications" are to Sprint Communications, Inc. and its consolidated subsidiaries. The preparation of the unaudited interim consolidated financial statements requires management of the Company to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities at the date of the unaudited interim consolidated financial statements. These estimates are inherently subject to judgment and actual results could differ. The consolidated financial statements include our accounts, those of our 100% owned subsidiaries, and subsidiaries we control or in which we have a controlling financial interest. For controlled subsidiaries that are not wholly-owned, the noncontrolling interests are included in "Net income" and "Total equity". All intercompany transactions and balances have been eliminated in consolidation. Reclassification of Prior Period Amounts Certain prior period amounts have been reclassified to conform to the current period presentation. As a result of the growing significance of our leasing program, in fiscal year 2017 we disaggregated equipment revenue between device sales and device operating lease revenue in our consolidated statements of comprehensive income. Revenue derived from device sales is now being reported in a new caption called "Equipment sales," and revenue derived from device operating leases is now being reported in a new caption called "Equipment rentals." For the three-month period ended June 30, 2017, we have disaggregated revenues of $899 million from equipment revenue to "Equipment rentals." To align with the changes made to our revenue presentation, we have added two new captions within the consolidated statements of comprehensive income to capture certain costs directly attributable to our leasing activities consisting of "Cost of equipment rentals (exclusive of depreciation)" and "Depreciation - equipment rentals." For the three-month period ended June 30, 2017, we have reclassed $112 million of loss on disposal of property, plant and equipment, net of recoveries resulting from the write-off of leased devices from "Other, net" to the new caption called "Cost of equipment rentals (exclusive of depreciation)." Additionally, we disaggregated total depreciation between network and other versus depreciation related to equipment rentals. Network and other depreciation is now being reported in a new caption called "Depreciation - network and other," and depreciation derived from equipment rentals is now being reported in a new caption called "Depreciation - equipment rentals." For the three-month period ended June 30, 2017, we have disaggregated depreciation of $854 million from depreciation to "Depreciation - equipment rentals." Total net operating revenues, net operating expenses, net income, and basic and diluted earnings per share were not affected by these reclassifications. On January 1, 2018, the Company adopted authoritative guidance regarding Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments. The Company adopted this standard with retrospective application to the consolidated statements of cash flows. The standard impacted the presentation of cash flows related to beneficial interests in securitization transactions, which is the deferred purchase price associated with our accounts receivable facility, resulting in reclassification of cash inflows from operating activities to investing activities of $375 million for the three-month period ended June 30, 2017 in our consolidated statements of cash flows. The standard also impacted the presentation of cash flows related to separately identifiable cash flows and application of the predominance principal primarily related to direct channel leased devices resulting in a material reclassification of cash outflows from operating activities to investing activities of $892 million for the three-month period ended June 30, 2017 in our consolidated statements of cash flows. In addition, the standard also impacted the presentation of cash flows related to debt prepayment or debt extinguishment costs and resulted in a reclassification of cash outflows from operating activities to financing activities of $129 million for the three-month period ended June 30, 2017 in our consolidated statements of cash flows. Proceeds from the settlement of corporate-owned life insurance policies resulted in a $2 million reclassification between operating and investing activities in our consolidated statements of cash flows for three-month period ended June 30, 2017 . On January 1, 2018, the Company adopted authoritative guidance regarding Statement of Cash Flows: Restricted Cash, requiring that amounts generally described as restricted cash or restricted cash equivalents be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted this standard with retrospective application to the consolidated statements of cash flows. The adoption of this standard resulted in an increase of $72 million in the beginning balance of cash, cash equivalents and restricted cash on April 1, 2017. Business Combination Agreement On April 29, 2018, we announced that we entered into a Business Combination Agreement with T-Mobile US (T-Mobile) to merge in an all-stock transaction for a fixed exchange ratio of 0.10256 of T-Mobile shares for each Sprint share, or the equivalent of 9.75 Sprint shares for each T-Mobile share . Immediately following the transactions, Deutsche Telekom AG and SoftBank Group Corp. are expected to hold approximately 42% and 27% of fully-diluted shares of the combined company, respectively, with the remaining 31% of the fully-diluted shares of the combined company held by public stockholders. The Board will consist of 14 directors, of which nine will be nominated by Deutsche Telekom AG, four will be nominated by SoftBank Group Corp, and the final director will be the CEO of the combined company. The combined company will be named T-Mobile. The transaction is subject to customary closing conditions, including regulatory approvals, and is expected to close in the first half of calendar year 2019. Sprint and T-Mobile completed the Hart-Scott-Rodino filing with the Department of Justice on May 24, 2018. On June 18, 2018, the parties filed with the FCC the merger applications, including the Public Interest Statement. On July 18, 2018, the FCC accepted the applications for filing and established a public comment period for the transaction.

New Accounting Pronouncements

New Accounting Pronouncements	3 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements Accounting Pronouncements Adopted During the Current Year In May 2014, the Financial Accounting Standards Board (FASB) issued new authoritative literature, Revenue from Contracts with Customers (Topic 606) . This standard update, along with related subsequently issued updates, clarifies the principles for recognizing revenue and develops a common revenue standard for U.S. GAAP. The new standard supersedes much of the existing authoritative literature for revenue recognition (Topic 605). The standard update also amends current guidance for the recognition of costs to obtain and fulfill contracts with customers such that incremental costs of obtaining and direct costs of fulfilling contracts with customers will be deferred and amortized consistent with the transfer of the related good or service. Upon adoption, the Company applied the standard only to contracts that were not completed, referred to as open contracts. The Company adopted this standard update beginning on April 1, 2018 using the modified retrospective method. This method requires that the cumulative effect of initially applying the standard be recognized at the date of application beginning April 1, 2018. We recorded a pre-tax cumulative effect of $1.7 billion ( $1.3 billion , net of tax) as a reduction to the April 1, 2018 opening balance of accumulated deficit. Results for reporting periods beginning after April 1, 2018 are presented under Topic 606, while amounts reported for prior periods have not been adjusted and continue to be reported under accounting standards in effect for those periods. See Note 8. Revenues from Contracts with Customers for additional information related to revenues and contract costs, including qualitative and quantitative disclosures required under Topic 606. In January 2016, the FASB issued authoritative guidance regarding Financial Instruments , which amended guidance on the classification and measurement of financial instruments. Under the new guidance, entities will be required to measure equity investments that are not consolidated or accounted for under the equity method at fair value with any changes in fair value recorded in net income, unless the entity has elected the new practicability exception. For financial liabilities measured using the fair value option, entities will be required to separately present in other comprehensive income the portion of the changes in fair value attributable to instrument-specific credit risk. Additionally, the guidance amends certain disclosure requirements associated with the fair value of financial instruments. The Company adopted this standard update beginning on April 1, 2018 on a retrospective basis resulting in a pre-tax cumulative effect of $12 million ( $8 million , net of tax) to our opening balance of accumulated deficit. In October 2016, the FASB issued authoritative guidance regarding Income Taxes , which amended guidance for the income tax consequences of intra-entity transfers of assets other than inventory. Under the new guidance, entities will be required to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs, thereby eliminating the recognition exception within current guidance. The Company adopted this standard on April 1, 2018 on a modified retrospective basis with no impact to our consolidated financial statements. In January 2017, the FASB issued authoritative guidance amending Business Combinations: Clarifying the Definition of a Business , to clarify the definition of a business with the objective of providing a more robust framework to assist management when evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Company adopted this standard on April 1, 2018 with prospective application to future business combinations. In January 2017, the FASB issued authoritative guidance regarding Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment , which simplifies the goodwill impairment test by eliminating the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge (Step 2 of the test), but rather to record an impairment charge based on the excess of the carrying value over its fair value. The Company adopted this standard on April 1, 2018 with no impact to our consolidated financial statements at the date of adoption. The cumulative after-tax effect of the changes made to our consolidated balance sheet for the adoption of Topic 606 and other ASUs effective for the Company on April 1, 2018 were as follows: Adjustments due to March 31, 2018 Topic 606 Other ASUs April 1, 2018 (in millions) ASSETS Current assets: Accounts and notes receivable, net $ 3,711 $ 97 $ — $ 3,808 Device and accessory inventory 1,003 (24 ) — 979 Prepaid expenses and other current assets 575 271 — 846 Costs to acquire a customer contract — 1,219 — 1,219 Other assets 921 43 — 964 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accrued expenses and other current liabilities $ 3,962 $ (35 ) $ — $ 3,927 Deferred tax liabilities 7,294 366 — 7,660 Other liabilities 3,483 (32 ) — 3,451 Stockholders' equity: (Accumulated deficit) retained earnings (1,255 ) 1,307 8 60 Accumulated other comprehensive loss (313 ) — (8 ) (321 ) The most significant impact upon adoption of Topic 606 on April 1, 2018 was the recognition of a deferred contract cost asset of $1.2 billion , which was recorded in "Costs to acquire a customer contract" in our consolidated balance sheets for incremental contract acquisition costs paid on open contracts at the date of adoption. We are capitalizing and subsequently amortizing commission costs, which were previously expensed, related to new service contracts over the expected customer relationship period, while costs associated with contract renewals are amortized over the anticipated length of the service contract. We expect that operating expenses will be lower in the current fiscal year compared to amounts recorded under Topic 605 due to higher deferrals of such costs compared to the amortization of prior period commission costs deferred only for open contracts at the date of adoption as permitted by Topic 606. A reconciliation of the adjustments from the adoption of Topic 606 relative to Topic 605 on our consolidated statements of comprehensive income and balance sheet were as follows: Three Months Ended June 30, 2018 As reported Balances without adoption of Topic 606 Change (in millions, except per share amounts) Net operating revenues: Service revenue $ 5,740 $ 5,883 $ (143 ) Equipment sales 1,173 892 281 Equipment rentals 1,212 1,228 (16 ) 8,125 8,003 122 Net operating expenses: Cost of services (exclusive of depreciation and amortization included below) 1,677 1,688 (11 ) Cost of equipment sales 1,270 1,248 22 Cost of equipment rentals (exclusive of depreciation below) 124 124 — Selling, general and administrative 1,867 1,948 (81 ) Depreciation - network and other 1,023 1,023 — Depreciation - equipment rentals 1,136 1,136 — Amortization 171 171 — Other, net 42 42 — 7,310 7,380 (70 ) Operating income 815 623 192 Total other expense (595 ) (595 ) — Income before income taxes 220 28 192 Income tax expense (47 ) (7 ) (40 ) Net income 173 21 152 Less: Net loss attributable to noncontrolling interests 3 3 — Net income attributable to Sprint Corporation $ 176 $ 24 $ 152 Basic net income per common share $ 0.04 $ 0.01 $ 0.03 Diluted net income per common share $ 0.04 $ 0.01 $ 0.03 Basic weighted average common shares outstanding 4,010 4,010 — Diluted weighted average common shares outstanding 4,061 4,061 — June 30, 2018 As reported Balances without adoption of Topic 606 Change (in millions) ASSETS Current assets: Accounts and notes receivable $ 3,492 $ 3,404 $ 88 Device and accessory inventory 622 644 (22 ) Prepaid expenses and other current assets 895 557 338 Costs to acquire a customer contract 1,294 — 1,294 Other assets 1,023 919 104 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accrued expenses and other current liabilities $ 3,658 $ 3,690 $ (32 ) Deferred tax liabilities 7,704 7,298 406 Other liabilities 3,382 3,413 (31 ) Stockholders' equity: Retained earnings (accumulated deficit) 236 (1,223 ) 1,459 The most significant impacts to our financial statement results as reported under Topic 606 as compared to Topic 605 for the current reporting period are as follows: • Consideration paid to customers or on behalf of customers is included as a reduction of the total transaction price of customer contracts, resulting in a contract asset that is amortized to service revenue over the term of the contract. As a result, the income statement impact reflects an increase in equipment sales offset by a reduction in wireless service revenue. Under the previous standard, this consideration paid to customers or on behalf of customers was recognized as a reduction to revenue or as selling, general and administrative expense. • Costs to acquire a customer contract or for a contract renewal are now capitalized and amortized to selling, general and administrative expenses over the expected customer relationship period or length of the service contract, respectively. Under the previous standard, these commission costs were expensed as incurred. • Deferred tax liabilities were increased for temporary differences established upon adoption of Topic 606, primarily attributable to costs to acquire a customer contract. For income tax purposes, these commission costs will continue to be expensed as incurred. Accounting Pronouncements Not Yet Adopted In February 2016, the FASB issued authoritative guidance regarding Leases , and has subsequently modified several areas of the standard in order to provide additional clarity and improvements . The new standard will supersede much of the existing authoritative literature for leases. This guidance requires lessees, among other things, to recognize right-of-use assets and liabilities on their balance sheet for all leases with lease terms longer than twelve months. In July 2018, the FASB made targeted improvements to the standard, including providing an additional and optional transition method. Under this method, an entity initially applies the standard at the adoption date, including the election of certain transition reliefs, and recognizes a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption. The standard will be effective for the Company for its fiscal year beginning April 1, 2019, including interim periods within that fiscal year, with early adoption permitted. The Company is currently evaluating the guidance and assessing its overall impact. However, we expect the adoption of this guidance to have a material impact on our consolidated balance sheets. In June 2016, the FASB issued authoritative guidance regarding Financial Instruments - Credit Losses , which requires entities to use a Current Expected Credit Loss impairment model based on expected losses rather than incurred losses. Under this model, an entity would recognize an impairment allowance equal to its current estimate of all contractual cash flows that the entity does not expect to collect from financial assets measured at amortized cost. The entity's estimate would consider relevant information about past events, current conditions and reasonable and supportable forecasts, which will result in recognition of lifetime expected credit losses. The standard will be effective for the Company's fiscal year beginning April 1, 2020, including interim reporting periods within that fiscal year, although early adoption is permitted. The Company does not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In June 2018, the FASB issued authoritative guidance regarding Compensation - Stock Compensation , which expands the scope of ASC Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. The standard will be effective for the Company for its fiscal year beginning April 1, 2019, including interim periods within that fiscal year, with early adoption permitted. The Company is currently evaluating the guidance and assessing its overall impact. However, we do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

Financial Instruments

Financial Instruments	3 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Financial Instruments	Financial Instruments The Company carries certain assets and liabilities at fair value. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The three-tier hierarchy for inputs used in measuring fair value, which prioritizes the inputs based on the observability as of the measurement date, is as follows: quoted prices in active markets for identical assets or liabilities; observable inputs other than the quoted prices in active markets for identical assets and liabilities; and unobservable inputs for which there is little or no market data, which require the Company to develop assumptions of what market participants would use in pricing the asset or liability. The carrying amount of cash equivalents, accounts and notes receivable, and accounts payable approximates fair value. Short-term investments are recorded at amortized cost and the respective carrying amounts approximate the fair value that would be determined primarily using quoted prices in active markets. As of June 30, 2018 , short-term investments totaled $4.0 billion and consisted of approximately $2.3 billion of time deposits and $1.7 billion of commercial paper. As of March 31, 2018 , short-term investments totaled $2.4 billion and consisted of approximately $1.6 billion of time deposits and $765 million of commercial paper. The fair value of marketable equity securities totaling $41 million and $57 million as of June 30, 2018 and March 31, 2018 , respectively, are measured on a recurring basis using quoted prices in active markets. Current and long-term debt inclusive of our other financings are carried at amortized cost. Debt for which estimated fair value is determined based on unobservable inputs primarily represents borrowings under our secured equipment credit facilities, and sales of receivables under our Receivables Facility (see Note 7. Long-Term Debt, Financing and Capital Lease Obligations) . The carrying amounts associated with these borrowings approximate fair value. The estimated fair value of the majority of our current and long-term debt, excluding our secured equipment credit facilities, and sold wireless service, installment billing and future receivables is determined based on quoted prices in active markets or by using other observable inputs that are derived principally from, or corroborated by, observable market data. The following table presents carrying amounts and estimated fair values of current and long-term debt and financing obligations: Carrying amount at June 30, 2018 Estimated Fair Value Using Input Type Quoted prices in active markets Observable Unobservable Total estimated fair value (in millions) Current and long-term debt and financing obligations $ 40,784 $ 37,477 $ — $ 3,928 $ 41,405 Carrying amount at March 31, 2018 Estimated Fair Value Using Input Type Quoted prices in active markets Observable Unobservable Total estimated fair value (in millions) Current and long-term debt and financing obligations $ 40,820 $ 37,549 $ — $ 3,737 $ 41,286

Installment Receivables

Installment Receivables	3 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Installment Receivables	Installment Receivables Certain subscribers have the option to pay for their devices in installments, generally up to a 24 -month period. Short-term installment receivables are recorded in "Accounts and notes receivable, net" and long-term installment receivables are recorded in "Other assets" in the consolidated balance sheets. The following table summarizes the installment receivables: June 30, March 31, (in millions) Installment receivables, gross $ 1,232 $ 1,472 Deferred interest (50 ) (106 ) Installment receivables, net of deferred interest 1,182 1,366 Allowance for credit losses (199 ) (217 ) Installment receivables, net $ 983 $ 1,149 Classified in the consolidated balance sheets as: Accounts and notes receivable, net $ 841 $ 995 Other assets 142 154 Installment receivables, net $ 983 $ 1,149 The balance and aging of installment receivables on a gross basis by credit category were as follows: June 30, 2018 March 31, 2018 Prime Subprime Total Prime Subprime Total (in millions) (in millions) Unbilled $ 782 $ 337 $ 1,119 $ 951 $ 391 $ 1,342 Billed - current 62 24 86 69 29 98 Billed - past due 15 12 27 17 15 32 Installment receivables, gross $ 859 $ 373 $ 1,232 $ 1,037 $ 435 $ 1,472 Activity in the deferred interest and allowance for credit losses for the installment receivables was as follows: Three Months Ended Twelve Months Ended June 30, 2018 March 31, 2018 (in millions) Deferred interest and allowance for credit losses, beginning of period $ 323 $ 506 Adjustment to deferred interest on short- and long-term installment receivables due to Topic 606 (50 ) — Bad debt expense 15 142 Write-offs, net of recoveries (33 ) (224 ) Change in deferred interest on short- and long-term installment receivables (6 ) (101 ) Deferred interest and allowance for credit losses, end of period $ 249 $ 323

Intangible Assets

Intangible Assets	3 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets Indefinite-Lived Intangible Assets Our indefinite-lived intangible assets consist of FCC licenses, which were acquired primarily through FCC auctions and business combinations, certain of our trademarks, and goodwill. At June 30, 2018 , we held 800 MHz, 1.9 GHz and 2.5 GHz FCC licenses authorizing the use of radio frequency spectrum to deploy our wireless services. As long as the Company acts within the requirements and constraints of the regulatory authorities, the renewal and extension of these licenses is reasonably certain at minimal cost. Accordingly, we have concluded that FCC licenses are indefinite-lived intangible assets. Our Sprint and Boost Mobile trademarks have also been identified as indefinite-lived intangible assets. Goodwill represents the excess of consideration paid over the estimated fair value of net tangible and identifiable intangible assets acquired in business combinations. The following provides the activity of indefinite-lived intangible assets within the consolidated balance sheets: March 31, Net Additions June 30, (in millions) FCC licenses $ 37,274 $ 59 $ 37,333 Trademarks 4,035 — 4,035 Goodwill (1) 6,586 — 6,586 $ 47,895 $ 59 $ 47,954 _________________ (1) Through June 30, 2018 , there is no accumulated impairment losses for goodwill. Assessment of Impairment Our annual impairment testing date for goodwill and indefinite-lived intangible assets is January 1 of each year; however, we test for impairment between our annual tests if an event occurs or circumstances change that indicate that the asset may be impaired, or in the case of goodwill, that the fair value of the reporting unit is below its carrying amount. During the three-month period ended June 30, 2018, our stock price and our related market capitalization decreased subsequent to the announcement of the merger with T-Mobile. In the current quarter, we also updated our long-term forecasted cash flows for the Company, including those for the Wireless reporting unit. This update considered current economic conditions and trends, estimated future operating results, our views of growth rates, anticipated future economic and regulatory conditions, future cost savings initiatives and the availability of the necessary network infrastructure, handsets and other devices. Based on these events, we determined that recoverability of the carrying amount of goodwill should be evaluated for impairment at June 30, 2018. Upon completion of our valuation work, we compared the estimated fair value to the carrying amount of the Wireless reporting unit and concluded that the estimated fair value exceeded the carrying amount. As a result, no goodwill impairment was recorded. The determination of fair value requires considerable judgment and is highly sensitive to changes in underlying assumptions. Consequently, there can be no assurance that the estimates and assumptions made for the purposes of the goodwill, spectrum licenses, and Sprint and Boost Mobile trade names impairment tests will prove to be an accurate prediction of the future. Sustained declines in the Company’s operating results, number of wireless subscribers, future forecasted cash flows, growth rates and other assumptions, as well as significant, sustained declines in the Company’s stock price and related market capitalization could impact the underlying key assumptions and our estimated fair values, potentially leading to a future material impairment of goodwill or other indefinite-lived intangible assets. Intangible Assets Subject to Amortization Customer relationships are amortized using the sum-of-the-months' digits method, while all other definite-lived intangible assets are amortized using the straight-line method over the estimated useful lives of the respective assets. We reduce the gross carrying value and associated accumulated amortization when specified intangible assets become fully amortized. Amortization expense related to favorable spectrum and tower leases is recognized in "Cost of services" in our consolidated statements of comprehensive income. June 30, 2018 March 31, 2018 Useful Lives Gross Accumulated Net Gross Accumulated Net (in millions) Customer relationships 5 to 8 years $ 6,562 $ (5,623 ) $ 939 $ 6,562 $ (5,462 ) $ 1,100 Other intangible assets: Favorable spectrum leases 23 years 856 (216 ) 640 856 (172 ) 684 Favorable tower leases 7 years 335 (188 ) 147 335 (179 ) 156 Trademarks 2 to 34 years 520 (78 ) 442 520 (74 ) 446 Other 5 to 10 years 131 (54 ) 77 129 (50 ) 79 Total other intangible assets 1,842 (536 ) 1,306 1,840 (475 ) 1,365 Total definite-lived intangible assets $ 8,404 $ (6,159 ) $ 2,245 $ 8,402 $ (5,937 ) $ 2,465

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment consists primarily of network equipment and other long-lived assets used to provide service to our subscribers. Non-cash accruals included in property, plant and equipment (excluding leased devices) totaled $987 million and $387 million as of June 30, 2018 and 2017 , respectively. The following table presents the components of property, plant and equipment and the related accumulated depreciation: June 30, March 31, (in millions) Land $ 254 $ 254 Network equipment, site costs and related software 23,144 22,930 Buildings and improvements 817 813 Non-network internal use software, office equipment, leased devices and other 11,740 11,149 Construction in progress 3,001 2,202 Less: accumulated depreciation (18,418 ) (17,423 ) Property, plant and equipment, net $ 20,538 $ 19,925 Sprint offers a leasing program to its customers whereby qualified subscribers can lease a device for a contractual period of time. At the end of the lease term, the subscriber has the option to turn in the device, continue leasing the device, or purchase the device. As of June 30, 2018 , substantially all of our device leases were classified as operating leases. Purchases of leased devices are reported as cash outflows for "Capital expenditures - leased devices" in the consolidated statements of cash flows. The devices are then depreciated using the straight-line method to their estimated residual value generally over the term of the lease. The following table presents leased devices and the related accumulated depreciation: June 30, March 31, (in millions) Leased devices $ 10,145 $ 9,592 Less: accumulated depreciation (3,932 ) (3,580 ) Leased devices, net $ 6,213 $ 6,012 During the three-month periods ended June 30, 2018 and 2017 , we had non-cash transfers of returned leased devices from property, plant and equipment to device and accessory inventory at the lower of net book value or their estimated fair value of $163 million and $109 million , respectively. Non-cash accruals included in leased devices totaled $221 million and $210 million as of June 30, 2018 and 2017 , respectively. During the three-month periods ended June 30, 2018 and 2017 , we recorded $124 million and $287 million , respectively, of loss on disposal of property, plant and equipment, net of recoveries. Net losses that resulted from the write-off of leased devices are primarily associated with lease cancellations prior to the scheduled customer lease terms, where customers did not return the devices to us, were $124 million and $112 million for the three-month periods ended June 30, 2018 and 2017 , respectively, and are included in "Cost of equipment rentals" in our consolidated statements of comprehensive income. In addition, during the three-month period ended June 30, 2017, we recorded $175 million of losses related to $181 million of cell site construction costs that are no longer recoverable as a result of changes in our network plans, slightly offset by a $6 million gain, which are included in "Other, net" in our consolidated statements comprehensive income.

Accounts Payable

Accounts Payable	3 Months Ended
	Jun. 30, 2018
Accounts Payable [Abstract]
Accounts Payable	Additional Financial Information Cash, Cash Equivalents and Restricted Cash The following provides the classifications of cash, cash equivalents and restricted cash in the consolidated balance sheets: June 30, March 31, (in millions) Cash and cash equivalents $ 4,378 $ 6,610 Restricted cash in Other assets (1) 47 49 Cash, cash equivalents and restricted cash $ 4,425 $ 6,659 _________________ (1) Restricted cash in Other assets is required as part of our spectrum financing transactions. Accounts Payable Accounts payable at June 30, 2018 and March 31, 2018 include liabilities in the amounts of $80 million and $66 million , respectively, for payments issued in excess of associated bank balances but not yet presented for collection.

Long-Term Debt, Financing and C

Long-Term Debt, Financing and Capital Lease Obligations	3 Months Ended
	Jun. 30, 2018
Long-term Debt and Capital Lease Obligations [Abstract]
Long-Term Debt, Financing and Capital Lease Obligations	Long-Term Debt, Financing and Capital Lease Obligations Interest Rates Maturities June 30, March 31, (in millions) Notes Senior notes Sprint Corporation 7.13 - 7.88% 2021 - 2026 $ 12,000 $ 12,000 Sprint Communications, Inc. 6.00 - 11.50% 2020 - 2022 4,980 4,980 Sprint Capital Corporation 6.88 - 8.75% 2019 - 2032 6,204 6,204 Senior secured notes Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC 3.36 - 5.15% 2021 - 2028 6,781 7,000 Guaranteed notes Sprint Communications, Inc. 7.00 - 9.00% 2018 - 2020 2,753 2,753 Credit facilities Secured revolving bank credit facility 4.63% 2021 — — Secured term loan 4.63% 2024 3,950 3,960 PRWireless term loan 7.58% 2020 182 182 Export Development Canada (EDC) 4.59% 2019 300 300 Secured equipment credit facilities 3.75 - 4.45% 2020 - 2021 462 527 Accounts receivable facility 2.83 - 3.54% 2020 2,697 2,411 Financing obligations, capital lease and other obligations 2.35 - 12.00% 2018 - 2026 646 686 Net premiums and debt financing costs (338 ) (111 ) 40,617 40,892 Less current portion (4,846 ) (3,429 ) Long-term debt, financing and capital lease obligations $ 35,771 $ 37,463 As of June 30, 2018 , Sprint Corporation, had $12.0 billion in aggregate principal amount of senior notes outstanding. In addition, as of June 30, 2018 , the outstanding principal amount of the senior notes issued by Sprint Communications and Sprint Capital Corporation, the guaranteed notes issued by Sprint Communications, Sprint Communications' secured term loan and secured revolving bank credit facility, the EDC agreement, the secured equipment credit facilities, the Receivables Facility, and certain other obligations collectively totaled $21.8 billion in principal amount of our long-term debt. Sprint Corporation fully and unconditionally guaranteed such indebtedness, which was issued by 100% owned subsidiaries. Although certain financing agreements restrict the ability of Sprint Communications and its subsidiaries to distribute cash to Sprint Corporation, the ability of the subsidiaries to distribute cash to their respective parents, including to Sprint Communications, is generally not restricted. Cash interest payments totaled $602 million and $660 million during the three-month periods ended June 30, 2018 and 2017 , respectively. These payments were net of amounts capitalized of $15 million for both three-month periods ended June 30, 2018 and 2017 . Notes As of June 30, 2018 , our outstanding notes consisted of senior notes and guaranteed notes, all of which are unsecured, as well as senior secured notes associated with our spectrum financing transactions. Cash interest on all of the notes is payable semi-annually in arrears with the exception of the spectrum financing senior secured notes, which is payable quarterly. As of June 30, 2018 , $32.5 billion aggregate principal amount of the notes was redeemable at the Company's discretion at the then-applicable redemption prices plus accrued interest. As of June 30, 2018 , $26.3 billion aggregate principal amount of our senior notes, senior secured notes, and guaranteed notes provided holders with the right to require us to repurchase the notes if a change of control triggering event (as defined in the applicable indentures and supplemental indentures) occurs. In May 2018, we successfully completed consent solicitations with respect to certain series of Sprint Corporation, Sprint Communications, and Sprint Capital Corporation senior notes. As a result of the Sprint Corporation and Sprint Communications consent solicitations, the proposed merger transaction with T-Mobile , if consummated, will not constitute a change of control as defined in the applicable indentures governing the notes. Spectrum Financing In October 2016, certain subsidiaries of Sprint Communications, which were not "Restricted Subsidiaries" under Sprint Communications' and Sprint Capital Corporation's indentures, transferred certain directly held and third-party leased spectrum licenses (collectively, Spectrum Portfolio) to wholly-owned bankruptcy-remote special purpose entities (collectively, Spectrum Financing SPEs). The Spectrum Portfolio, which represented approximately 14% of Sprint's total spectrum holdings on a MHz-pops basis, was used as collateral to raise an initial $3.5 billion in senior secured notes (2016 Spectrum-Backed Notes) bearing interest at 3.36% per annum under a $7.0 billion securitization program. The 2016 Spectrum-Backed Notes are repayable over a five -year term, with interest-only payments over the first four quarters and amortizing quarterly principal payments thereafter commencing December 2017 through September 2021. During the three-month period ended June 30, 2018 , we made scheduled principal repayments of $219 million , resulting in a total principal amount outstanding related to the 2016 Spectrum-Backed Notes of $2.9 billion as of June 30, 2018 , of which $875 million was classified as "Current portion of long-term debt, financing and capital lease obligations" in the consolidated balance sheets. In March 2018, we issued approximately $3.9 billion in aggregate principal amount of senior secured notes under the existing $7.0 billion securitization program, consisting of two series of senior secured notes. The first series of notes totaled $2.1 billion in aggregate principal amount, bears interest at 4.738% per annum, and has quarterly interest-only payments until June 2021, and amortizing quarterly principal amounts thereafter commencing in June 2021 through March 2025. The second series of notes totaled approximately $1.8 billion in aggregate principal amount, bears interest at 5.152% per annum, and have quarterly interest-only payments until June 2023, and amortizing quarterly principal amounts thereafter commencing in June 2023 through March 2028. The Spectrum Portfolio, which also serves as collateral for the 2016 Spectrum-Backed Notes, remains substantially identical to the original portfolio from October 2016. Simultaneously with the October 2016 offering, Sprint Communications entered into a long-term lease with the Spectrum Financing SPEs for the ongoing use of the Spectrum Portfolio. The spectrum lease is an executory contract, which for accounting purposes is treated in a similar manner to an operating lease. Sprint Communications is required to make monthly lease payments to the Spectrum Financing SPEs at a market rate. The lease payments, which are guaranteed by Sprint Corporation and certain subsidiaries (none of which were "Restricted Subsidiaries" under Sprint's indentures) of Sprint Communications (and are secured together with the obligations under another transaction document by substantially all of the assets of such entities on a pari passu basis up to an aggregate cap of $3.5 billion with the grant of security under the secured term loan and revolving bank credit facility and EDC (as defined below) agreement), are sufficient to service all outstanding series of the senior secured notes and the lease also constitutes collateral for the senior secured notes. Because the Spectrum Financing SPEs are wholly-owned Sprint subsidiaries, these entities are consolidated and all intercompany activity has been eliminated. Each Spectrum Financing SPE is a separate legal entity with its own separate creditors who will be entitled, prior to and upon the liquidation of the Spectrum Financing SPEs, to be satisfied out of the Spectrum Financing SPEs' assets prior to any assets of the Spectrum Financing SPEs becoming available to Sprint. Accordingly, the assets of the Spectrum Financing SPEs are not available to satisfy the debts and other obligations owed to other creditors of Sprint until the obligations of the Spectrum Financing SPEs under the spectrum-backed senior secured notes are paid in full. In June 2018, we obtained the consent of the control party under the spectrum-backed senior secured notes indenture to amend the indenture such that the proposed merger transaction with T-Mobile, if consummated, will not constitute a change of control as defined in the indenture. Credit Facilities Secured Term Loan and Revolving Bank Credit Facility On February 3, 2017, we entered into a credit agreement for $6.0 billion , consisting of a $4.0 billion , seven -year secured term loan that matures in February 2024 and a $2.0 billion secured revolving bank credit facility that expires in February 2021. As of June 30, 2018 , approximately $144 million in letters of credit were outstanding under the secured revolving bank credit facility, including the letter of credit required by the Report and Order (see Note 11. Commitments and Contingencies) . As a result of the outstanding letters of credit, which directly reduce the availability of borrowings, the Company had approximately $1.9 billion of borrowing capacity available under the secured revolving bank credit facility as of June 30, 2018 . The bank credit facility requires a ratio (Leverage Ratio) of total indebtedness to trailing four quarters earnings before interest, taxes, depreciation and amortization and other non-recurring items, as defined by the bank credit facility (adjusted EBITDA), not to exceed 4.75 to 1.0 through the fiscal quarter ending December 31, 2018. For each fiscal quarter ending March 31, 2019 through December 31, 2019, the Leverage Ratio must not exceed 3.75 to 1.0 . The Leverage Ratio must not exceed 3.5 to 1.0 for the fiscal quarter ended March 31, 2020 and each fiscal quarter ending thereafter through expiration of the facility. The term loan has an interest rate equal to LIBOR plus 250 basis points and the secured revolving bank credit facility has an interest rate equal to LIBOR plus a spread that varies depending on the Leverage Ratio. In consideration of the seven -year secured term loan, we entered into a five -year fixed-for-floating interest rate swap on a $2.0 billion notional amount that has been designated as a cash flow hedge. The effective portion of changes in fair value are recorded in "Other comprehensive income (loss)" in the consolidated statements of comprehensive income and the ineffective portion, if any, is recorded as interest expense in current period earnings in the consolidated statements of comprehensive income. The fair value of the interest rate swap was approximately $55 million and $41 million as of June 30, 2018 and March 31, 2018 , respectively, which was recorded in "Other assets" in the consolidated balance sheets. PRWireless Term Loan During the three-month period ended December 31, 2017, Sprint and PRWireless PR, Inc. completed a transaction to combine their operations in Puerto Rico and the U.S. Virgin Islands into a new entity. Prior to the formation of the new entity, PRWireless PR, Inc. had incurred debt under a secured term loan, which became debt of the new entity upon the transaction close. The secured term loan bears interest at 5.25% plus LIBOR and expires in June 2020. Any amounts repaid early may not be drawn again. As of June 30, 2018 , the total principal amount outstanding was $182 million with an additional $20 million remaining available. Sprint has provided an unsecured guarantee of repayment of the secured term loan obligations. The secured portion of the facility is limited to assets of the new entity as the borrower. EDC Agreement As of June 30, 2018 , the EDC agreement provided for security and covenant terms similar to our secured term loan and revolving bank credit facility. However, under the terms of the EDC agreement, repayments of outstanding amounts cannot be redrawn. As of June 30, 2018 , the total principal amount of our borrowings under the EDC facility was $300 million . Secured Equipment Credit Facilities Finnvera plc (Finnvera) The Finnvera secured equipment credit facility provided for the ability to borrow up to $800 million to finance network equipment-related purchases from Nokia Solutions and Networks US LLC, USA. The facility's availability for borrowing expired in October 2017. Such borrowings were contingent upon the amount and timing of network equipment-related purchases made by Sprint. During the three-month period ended June 30, 2018 , we made principal repayments totaling $13 million on the facility, resulting in a total principal amount of $161 million outstanding as of June 30, 2018 . K-sure The K-sure secured equipment credit facility provides for the ability to borrow up to $750 million to finance network equipment-related purchases from Samsung Telecommunications America, LLC. The facility can be divided into three consecutive tranches of varying size. In September 2017, we amended the secured equipment credit facility to extend the borrowing availability through December 2018. Such borrowings are contingent upon the amount and timing of network equipment-related purchases made by Sprint. During the three-month period ended June 30, 2018 , we made principal repayments totaling $32 million on the facility, resulting in a total principal amount of $162 million outstanding as of June 30, 2018 . Delcredere | Ducroire (D/D) The D/D secured equipment credit facility provided for the ability to borrow up to $250 million to finance network equipment-related purchases from Alcatel-Lucent USA Inc. In September 2017, we amended the secured equipment credit facility to restore previously expired commitments of $150 million . During the three-month period ended June 30, 2018 , we made principal repayments totaling $20 million on the facility, resulting in a total principal amount of $139 million outstanding as of June 30, 2018 . Borrowings under the Finnvera, K-sure and D/D secured equipment credit facilities are each secured by liens on the respective network equipment purchased pursuant to each facility's credit agreement. In addition, repayments of outstanding amounts borrowed under the secured equipment credit facilities cannot be redrawn. Each of these facilities is fully and unconditionally guaranteed by both Sprint Communications and Sprint Corporation. The secured equipment credit facilities have certain key covenants similar to those in our secured term loan and revolving bank credit facility. Accounts Receivable Facility Transaction Overview Our Receivables Facility provides us the opportunity to sell certain wireless service receivables, installment receivables, and future amounts due from customers who lease certain devices from us to the Purchasers. The maximum funding limit under the Receivables Facility is $4.5 billion . While we have the right to decide how much cash to receive from each sale, the maximum amount of cash available to us varies based on a number of factors and, as of June 30, 2018 , represents approximately 50% of the total amount of the eligible receivables sold to the Purchasers. As of June 30, 2018 , the total amount of borrowings under our Receivables Facility was $2.7 billion and the total amount available to be drawn was $942 million . However, subsequent to June 30, 2018, Sprint repaid approximately $1.2 billion under the Receivables Facility reducing amounts outstanding to approximately $1.5 billion . In February 2017, the Receivables Facility was amended and Sprint regained effective control over the receivables transferred to the Purchasers by obtaining the right, under certain circumstances, to repurchase them. Subsequent to the February 2017 amendment, all proceeds received from the Purchasers in exchange for the transfer of our wireless service and installment receivables are recorded as borrowings. Repayments and borrowings under the Receivables Facility are reported as financing activities in the consolidated statements of cash flows. All cash collected on repurchased receivables continues to be recognized in investing activities in the consolidated statements of cash flows. In October 2017, the Receivables Facility was amended to, among other things, extend the maturity date to November 2019 and to reallocate the Purchasers' commitments between wireless service, installment and future lease receivables through May 2018 to 26% , 28% and 46% , respectively. After May 2018, the allocation of the Purchasers' commitments between wireless service, installment and future lease receivables are 26% , 18% and 56% , respectively. In June 2018, the Receivables Facility was further amended to, among other things, extend the maturity date to June 2020, increase the maximum funding limit by $200 million , reduce financing costs, add month-to-month lease receivables as eligible receivables for leases that extend past their original lease term, and change the Purchasers' commitment allocations. The Purchasers' commitments will be allocated 22% to wireless service receivables and 78% to a combined pool of installment receivables, future lease receivables and month-to-month lease receivables. During the three-month period ended June 30, 2018 , we borrowed $1.4 billion and repaid $1.1 billion to the Purchasers. Prior to the February 2017 amendment, wireless service and installment receivables sold to the Purchasers were treated as a sale of financial assets and we derecognized these receivables, as well as the related allowances, and recognized the net proceeds received in cash provided by operating activities in the consolidated statements of cash flows. The total proceeds from the sale of these receivables were comprised of a combination of cash, which was recognized as operating activities within our consolidated statements of cash flows, and a deferred purchase price (DPP). The DPP was realized by us upon either the ultimate collection of the underlying receivables sold to the Purchasers or upon Sprint's election to receive additional advances in cash from the Purchasers subject to the total availability under the Receivables Facility. All cash collections on the DPP were recognized as investing activities in the consolidated statements of cash flows. The fees associated with these sales were recognized in "Selling, general and administrative" in the consolidated statements of comprehensive income through the date of the February 2017 amendment. Subsequent to the February 2017 amendment, the sale of wireless service and installment receivables are reported as financings, which is consistent with our historical treatment for the sale of future lease receivables, and the associated fees are recognized as "Interest expense" in the consolidated statements of comprehensive income. Transaction Structure Sprint contributes certain wireless service, installment and future lease receivables, as well as the associated leased devices, to Sprint's wholly-owned consolidated bankruptcy-remote special purpose entities (SPEs). At Sprint's direction, the SPEs have sold, and will continue to sell, wireless service, installment and future lease receivables to Purchasers or to a bank agent on behalf of the Purchasers. Leased devices will remain with the SPEs, once sales are initiated, and continue to be depreciated over their estimated useful life. As of June 30, 2018 , wireless service, installment and lease receivables contributed to the SPEs and included in "Accounts and notes receivable, net" in the consolidated balance sheets were $2.6 billion and the long-term portion of installment receivables included in "Other assets" in the consolidated balance sheets was $132 million . As of June 30, 2018 , the net book value of devices contributed to the SPEs was approximately $6.2 billion . Each SPE is a separate legal entity with its own separate creditors who will be entitled, prior to and upon the liquidation of the SPE, to be satisfied out of the SPE’s assets prior to any assets in the SPE becoming available to Sprint. Accordingly, the assets of the SPE are not available to pay creditors of Sprint or any of its affiliates (other than any other SPE), although collections from these receivables in excess of amounts required to repay the advances, yield and fees of the Purchasers and other creditors of the SPEs may be remitted to Sprint during and after the term of the Receivables Facility. Sales of eligible receivables by the SPEs generally occur daily and are settled on a monthly basis. Sprint pays a fee for the drawn and undrawn portions of the Receivables Facility. A subsidiary of Sprint services the receivables in exchange for a monthly servicing fee, and Sprint guarantees the performance of the servicing obligations under the Receivables Facility. Variable Interest Entity Sprint determined that certain of the Purchasers, which are multi-seller asset-backed commercial paper conduits (Conduits) are considered variable interest entities because they lack sufficient equity to finance their activities. Sprint's interest in the receivables purchased by the Conduits is not considered a variable interest because Sprint's interest is in assets that represent less than 50% of the total activity of the Conduits. Financing Obligations, Capital Lease and Other Obligations Tower Financing During 2008, we sold and subsequently leased back approximately 3,000 cell sites, of which approximately 2,000 remain as of June 30, 2018 . Terms extend through 2021, with renewal options for an additional 20 years. These cell sites continue to be reported as part of our "Property, plant and equipment, net" in our consolidated balance sheets due to our continued involvement with the property sold and the transaction is accounted for as a financing. The financing obligation as of June 30, 2018 is $139 million . Capital Lease and Other Obligations In May 2016, Sprint closed on a transaction with Shentel to acquire one of our wholesale partners, NTELOS Holdings Corporation (nTelos). The total consideration for this transaction included $181 million , on a net present value basis, of notes payable to Shentel. Sprint will satisfy its obligations under the notes payable over an expected term of five to six years, of which the remaining obligation is $132 million as of June 30, 2018 . The remainder of our capital lease and other obligations of $327 million as of June 30, 2018 are primarily for the use of wireless network equipment. Covenants Certain indentures and other agreements require compliance with various covenants, including covenants that limit the ability of the Company and its subsidiaries to sell all or substantially all of its assets, limit the ability of the Company and its subsidiaries to incur indebtedness and liens, and require that we maintain certain financial ratios, each as defined by the terms of the indentures, supplemental indentures and financing arrangements. As of June 30, 2018 , the Company was in compliance with all restrictive and financial covenants associated with its borrowings. A default under any of our borrowings could trigger defaults under certain of our other debt obligations, which in turn could result in the maturities being accelerated. Under our secured revolving bank credit facility, we are currently restricted from paying cash dividends because our ratio of total indebtedness to adjusted EBITDA (each as defined in the applicable agreements) exceeds 2.5 to 1.0 .

Revenues from Contracts with Cu

Revenues from Contracts with Customers	3 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenues from Contracts with Customers The Company adopted Topic 606 beginning on April 1, 2018 using the modified retrospective method. We earn revenue from contracts with customers, primarily through the provision of telecommunications and other services and the sale or rental of wireless devices and accessories. Net operating revenues primarily consist of Wireless and Wireline service revenues, revenues generated from device and accessory sales, revenues from wholesale operators and third-party affiliates. Our contracts with customers may involve multiple performance obligations, which include services, wireless devices or a combination thereof, and we allocate the transaction price between each performance obligation based on its relative standalone selling price. Upon adoption, the Company applied the standard only to contracts that were not completed, referred to as open contracts. We operate two reportable segments: Wireless and Wireline. For additional information regarding our business and segments, see "Part I, Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations." Contracts with Customers Service-related components of the total transaction price typically consist of fixed monthly recurring charges, variable usage charges and miscellaneous fees such as activation fees, international long distance and roaming, commissions on the device insurance program, late payment and administrative fees, and certain regulatory-related fees, net of service credits. For contracts involving multiple performance obligations, such as equipment and service, revenue is allocated based on relative standalone selling price of each performance obligation. We generally recognize revenue allocated to service performance obligations as those services are rendered. As a result of the timing of our multiple billing cycles throughout each month, we are required to estimate the amount of subscriber revenues earned but not billed from the end of each billing cycle to the end of each reporting period, and to estimate and defer amounts billed but not earned as of the end of each reporting period. These estimates are based primarily on rate plans in effect and our historical usage and billing patterns. Regulatory fees and costs are recorded gross. The largest component of regulatory fees is the Universal Service Fund, which represented no more than 2% of net operating revenues for all periods presented in the consolidated statements of comprehensive income. We recognize equipment sales and corresponding costs of equipment sales when title and risk of loss passes to the indirect dealer or end-use subscriber, assuming all other revenue recognition criteria are met. This typically occurs at the point of sale for direct channel sales and freight-on-board dealer destination for indirect channel sales. For the three month period ended June 30, 2018, equipment sales to our indirect dealers was approximately $750 million . In subsidized postpaid and prepaid Wireless contracts, we subsidize the cost of the device as an incentive to retain and acquire subscribers. We recognize revenue on equipment rentals subject to leasing contracts in accordance with the classification of the lease, which is over the lease term for operating leases or upon transfer of control over the equipment for most capital leases. The accounting estimates related to the recognition of revenue require us to make assumptions about numerous factors such as future billing adjustments, future returns, and the total contract consideration (e.g., for contracts which include customer incentives or consideration payable to the customer). We use output methods to recognize revenue for performance obligations satisfied over time (i.e., service performance obligations). Output methods measure progress toward satisfying a performance obligation on the basis of direct measurements of the goods or services transferred to date, relative to the remaining goods or services promised under a contract. Management asserts that this method most reasonably represents the transfer of goods or services to the customer. For prepaid contracts which provide the customer with the ability to redeem fixed prepayments for future goods or services, we utilize the proportional amount of redemptions from the customer in comparison to the total expected amount of redemptions as an estimate of our progress toward satisfaction of our performance obligations. For postpaid contracts with unlimited amounts of monthly service and for Wireline contracts, we utilize the time elapsed in relation to the total contract duration as an estimate of our progress toward satisfaction of our performance obligations. In determining the amounts of revenue to recognize, we use the following methods, inputs, and assumptions: • Determination of transaction price - we include any fixed and determinable charges per our contracts as part of the total transaction price. To the extent that variable consideration is not constrained, we include a probability-weighted estimate of the variable amount within the total transaction price and update our assumptions over the duration of the contract. We do not accept non-cash consideration from our customers as direct payment for the purchase of equipment at contract inception or for the purchase of ongoing services. Subject to certain restrictions, we may purchase used equipment from customers entering into a new subscriber contract. Our payment for the purchase of this used equipment may not equal its market value. In those circumstances, the expected difference between the purchase price and the market value of the used equipment is treated as an adjustment to the total transaction price of the customer's contract at contract inception. • Assessment of estimates of variable consideration - our Wireless contracts generally do not involve variable consideration which must be allocated amongst performance obligations at contract inception, other than expected adjustments to the total transaction price related to (a) customer equipment rebates; (b) customer retention credits; and (c) product returns and service refunds, all of which we are able to reasonably estimate at contract inception based upon historical experience with similar or identical contracts and similar or identical customers. Our Wireline contracts are generally not subject to significant amounts of variable consideration. We do not consider any of our variable consideration to be constrained for the purpose of estimating the total transaction price to be allocated to our performance obligations. • Allocation of transaction price - we allocate the total transaction price in our contracts amongst performance obligations based upon the relative standalone selling prices of those performance obligations. We use observable external pricing of performance obligations when sold on a standalone basis as evidence of standalone selling prices. Discounts and premiums built into our transaction prices are typically allocated proportionately to all performance obligations within the contracts, exclusive of performance obligations for the delivery of accessories, which are consistently sold at standalone selling price regardless of bundling, and with the exception of estimated Wireless customer retention credits, which are treated as a reduction in the portion of the total transaction price allocated to service revenue. • Measurement of returns, refunds, and other similar obligations are estimated separately for separate product and service types based upon historical experience with similar contracts and similar types of customers. The total transaction price is reduced by the amount estimated as a return, refund, or other similar obligation in relation to the sale. This amount is recorded as a current liability, unless and until our estimates have changed or the relevant obligation has been satisfied. Disaggregation of Revenue We disaggregate revenue based upon differences in accounting for underlying performance obligations. Accounting differences related to our performance obligations are driven by various factors, including the type of product offering provided, the type of customer, and the expected timing of payment for goods and services. The following table presents disaggregated reported revenue by category: Three Months Ended June 30, 2018 (in millions) Service revenue Postpaid $ 4,188 Prepaid 982 Wireless wholesale and affiliate 294 Wireline 276 Total service revenue 5,740 Equipment sales 1,173 Equipment rentals 1,212 Total revenue $ 8,125 Contract Assets and Liabilities Performance obligations related to our Wireless segment involve the provision of equipment and service. In most circumstances, equipment performance obligations provided to the customer as part of subsidized and installment billing contracts, or as part of standalone equipment sales, are satisfied when title and risk of loss passes to the indirect dealer or end-use subscriber, assuming all other revenue recognition criteria are met. This typically occurs at the point of sale for direct channel sales and freight-on-board dealer destination for indirect channel sales. We recognize revenue on equipment rentals subject to leasing contracts in accordance with the classification of the lease, which is over the lease term for operating leases or upon transfer of control over the equipment for most capital leases. Wireless service performance obligations are typically satisfied over 24 months for subsidized and installment billing contracts with substantive termination penalties such as Buy-One-Get-One (BOGO) contracts, over 18 to 30 months for leasing contracts, and over one month for traditional installment billing contracts. Amounts due for subsidized equipment are due at point of sale. Amounts due for equipment subject to an operating or capital lease are invoiced and collected monthly over the term of the lease. Amounts due for equipment subject to an installment billing note are invoiced and collected monthly over the term of the note, typically between 24 and 30 months for handsets and 12 to 18 months for accessories. A financing component exists in relation to subsidized and installment billing Wireless contracts. However, we do not consider the financing component to be quantitatively or qualitatively significant for installment billing contracts with durations longer than one year. For those installment billing contracts with durations of one year or less, we have elected to apply the practical expedient and not adjust the transaction price for the effects of a financing component. Amounts due for Wireless services are typically invoiced and collected monthly over the relevant service period. Wireless contracts generally do not involve variable consideration, other than expected adjustments to the total transaction price related to expected future price concessions and product returns and service refunds. Our Wireless contracts include consideration resulting from monthly customer charges intended to partially recover taxes imposed on the Company, including fees related to the Universal Service Fund. These fees are based on the customer's estimated monthly voice usage and are therefore allocated to corresponding distinct months of Wireless services. We update our estimates related to return and refund obligations for Wireless equipment and services on a quarterly basis. Returns and refunds are typically provided for up to 14 days after contract inception for individual customers and for 30 days for business customers. Performance obligations related to our Wireline business involve the provision of services to corporate customers. Wireline service performance obligations are satisfied typically over a period between 24 and 36 months. Amounts due for services are invoiced and collected periodically over the relevant service period. Wireline contracts are not subject to significant amounts of variable consideration, other than charges intended to partially recover taxes imposed on the Company, including fees related to the Universal Service Fund. Such fees are based on the customer's estimated monthly usage and are therefore allocated to corresponding distinct months of Wireline services. Our Wireline contracts do provide the customer with monthly options to purchase goods or services at prices commensurate with the standalone selling prices for those goods or services, as determined at contract inception. The relationship between the satisfaction of our performance obligations and collection of payments from the customer will vary depending upon the type of contract. In Wireless subsidized contracts, payment related to equipment performance obligations is partially collected upfront and partially collected over the related service period resulting in a contract asset position at contract inception. In traditional Wireless installment billing contracts, the full amount of consideration related to equipment performance obligations is recognized as a receivable at contract inception and collected ratably in accordance with payment terms attached to the installment note. Traditional Wireless installment billing contracts are subject to an accounting contract duration of one month, and therefore do not result in the recognition of a contract position. In Wireless installment billing contracts that include a substantive termination penalty such as when customers receive a monthly service credit to offset monthly payments against applicable installment billing notes, the amount of the total transaction price that is allocated to equipment performance obligations is less than the amount recognized as a noncontingent receivable from the customer at contract inception, resulting in a contract liability position. In Wireless leasing contracts, the amount of cash received at inception is generally larger than the amount of upfront revenue allocated and recognized as rental income. This results in a contract liability at contract inception, which is often partially composed of deferred rental income. In prepaid contracts initiated in our indirect channel, customers may purchase a device at a discount. The Company will often reimburse the dealer some portion of this discount, which is expected to be recovered through future sales of monthly service. This results in a contract asset position at contract inception. In circumstances where prepaid customers prepay account balances, which can be used to purchase future Wireless goods or services, those amounts are recognized as a contract liability until the point where prepayments are redeemed for goods or services and the related performance obligations have been satisfied. In Wireline contracts, we record a contract position, either a contract asset or a contract liability depending upon the specific facts and circumstances of the contract, including to reflect differences between the amount of revenue allocated to equipment delivered upfront and the contractually stated price for that equipment, or if we collect nonrefundable upfront payments from customers related to installation and activation. We capitalize incremental commissions directly related to the acquisition or renewal of customer contracts, to the extent that the costs are expected to be recovered. Capitalized costs are amortized on a straight-line basis over the shorter of the expected customer life or the expected benefit related directly to those costs. We assess our capitalized contract acquisition asset for impairment on a quarterly basis. We impair our capitalized costs to the extent that the carrying amount of a capitalized cost exceeds (a) the remaining amount of consideration we expect to receive in exchange for the goods and services related to the cost, less (b) the expected costs related directly to providing those goods and services that have not yet been recognized as expenses. The following table presents the opening and closing balances of our contract assets, contract liabilities, and receivables balances, as well as capitalized costs associated with contracts with customers: June 30, April 1, 2018 2018 (in millions) Contract assets and liabilities Contract assets (1) $ 550 $ 432 Billed trade receivables 2,470 2,559 Unbilled trade receivables 1,040 1,250 Contract liabilities (2) 1,045 1,104 Other related assets and liabilities Other related assets: Capitalized costs to acquire a customer contract: Sales commissions - opening balance $ 1,219 Sales commissions - additions 266 Amortization of capitalized sales commissions (191 ) Net costs to acquire a customer contract $ 1,294 (1) The fluctuation correlates directly to the execution of new customer contracts and invoicing and collections from customers in the normal course of business. (2) Revenue recognized during the period, which was included within the beginning contract liability balance, amounts to $867 million . Remaining Performance Obligations The aggregate amount of total transaction price allocated to performance obligations in contracts existing as of the balance sheet date, which are wholly unsatisfied or partially unsatisfied as of the end of the reporting period, and the expected time frame for satisfaction of those unsatisfied or partially unsatisfied performance obligations, are as follows (in millions): Remainder of year ending March 31, 2019 $ 7,281 Year ending March 31, 2020 2,358 Thereafter 4 Total $ 9,643 The amounts disclosed above relate to the allocation of revenue amongst performance obligations in contracts existing as of the balance sheet date, and not to any differences between the timing of revenue recognition and recognition of receivables or cash collection. As a result, those amounts are not necessarily reflected as a contract liability as of the balance sheet date. Included in the above amounts are $2.7 billion for the year ending March 31, 2019 and $872 million for the year ending March 31, 2020, respectively, related to the allocation of the total transaction price to future operating lease revenues. Additionally, amounts disclosed above include estimates of variable consideration, where applicable. Our Wireless contracts generally do not involve variable consideration, other than expected adjustments to the total transaction price related to future price concessions and product returns and service refunds, all of which we are able to reasonably estimate at contract inception based upon historical experience with similar contracts and similar types of customers. In accordance with the practical expedients: • The amounts disclosed above do not include revenue allocated to wholly or partially unsatisfied performance obligations for which the accounting contract duration at contract inception is less than 12 months, which includes expected revenues from traditional installment billing contracts with a one-month accounting contract duration. • The amounts disclosed above do not include variable consideration resulting from monthly customer charges intended to partially recover taxes imposed on the Company, including fees related to the Universal Service Fund. Such fees are based on the customer's estimated monthly voice usage and are therefore allocated to corresponding distinct months of Wireless services. • The amounts disclosed above do not include variable consideration resulting from monthly charges to Wireless wholesale customers. Such fees are based on the customer's monthly usage of capacity and are therefore allocated to corresponding distinct months of Wireless services. Wireline contracts are generally not subject to significant amounts of variable consideration, other than charges intended to partially recover taxes imposed on the Company, including fees related to the Universal Service Fund. Such fees are based on the customer's estimated monthly usage and are therefore allocated to corresponding distinct months of Wireline services, and recognized as revenue when invoiced in accordance with the practical expedient. Our Wireline contracts do typically provide the customer with monthly options to purchase goods or services at prices commensurate with the standalone selling prices for those goods or services as determined at contract inception.

Severance and Exit Costs

Severance and Exit Costs	3 Months Ended
	Jun. 30, 2018
Restructuring and Related Activities [Abstract]
Severance and Exit Costs	Severance and Exit Costs Severance and exit costs consist of lease exit costs primarily associated with tower and cell sites, access exit costs related to payments that will continue to be made under our backhaul access contracts for which we will no longer be receiving any economic benefit, and severance costs associated with reductions in our work force. The following provides the activity in the severance and exit costs liability included in "Accounts payable," "Accrued expenses and other current liabilities" and "Other liabilities" within the consolidated balance sheets: March 31, Net (Benefit) Expense Cash Payments and Other June 30, (in millions) Lease exit costs $ 165 $ — $ (17 ) $ 148 Severance costs 64 2 (1) (32 ) 34 Access exit costs 19 6 (2) (3 ) 22 $ 248 $ 8 $ (52 ) $ 204 _________________ (1) For the three-month period ended June 30, 2018 , we recognized costs of $2 million (Wireless only). (2) For the three-month period ended June 30, 2018 , we recognized costs of $6 million ( $1 million Wireless , $5 million Wireline) as "Severance and exit costs." We continually refine our network strategy and evaluate other potential network initiatives to improve the overall performance of our network. Additionally, major cost cutting initiatives are expected to continue to reduce operating expenses and improve our operating cash flows. As a result of these ongoing activities, we may incur future material charges associated with lease and access exit costs, severance, asset impairments, and accelerated depreciation, among others.

Income Taxes

Income Taxes	3 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The U.S. federal statutory tax rates for the three-month periods ended June 30, 2018 and 2017 were 21% and 35% , respectively. The Tax Cuts and Jobs Act (the Tax Act) enacted in December 2017 reduced the corporate income tax rate effective January 1, 2018. The differences that caused our effective income tax rates to differ from the U.S. federal statutory rates for the three-month periods ended June 30, 2018 and 2017 , respectively, were as follows: Three Months Ended 2018 2017 (in millions) Income tax expense at the federal statutory rate $ (46 ) $ (174 ) Effect of: State income taxes, net of federal income tax effect (15 ) (22 ) State law changes, net of federal income tax effect 24 3 Increase deferred tax liability for organizational restructuring (13 ) — Increase deferred tax liability for business activity changes — (65 ) Credit for increasing research activities — 4 Change in federal and state valuation allowance 6 (33 ) Other, net (3 ) (5 ) Income tax expense $ (47 ) $ (292 ) Effective income tax rate 21.4 % 58.6 % Income tax expense of $47 million for the three-month period ended June 30, 2018 represented a consolidated effective tax rate of approximately 21% . During the period, we recognized a $24 million tax benefit for the impact of state law changes enacted during the period, partially offset by a $13 million tax expense attributable to organizational restructuring. These adjustments were primarily driven by the change in carrying value of our deferred tax assets and liabilities on temporary differences. Income tax expense of $292 million for the three-month period ended June 30, 2017 represented a consolidated effective tax rate of approximately 59% . Income tax expense was primarily attributable to taxable temporary differences from the tax amortization of FCC licenses and tax expense on pre-tax gains from spectrum license exchanges during the period. We also increased our deferred state income tax liability by $65 million for changes in business activities causing us to become subject to income tax in additional tax jurisdictions. This resulted in a change in the measurement of the carrying value of our deferred tax liability on temporary differences, primarily FCC licenses. We continue to maintain a valuation allowance on certain deferred tax assets, primarily net operating losses with definite-life carry forward periods. Factors that could change our judgment as to our ability to realize these deferred tax assets, and therefore, reduce our valuation allowance, include the existence of future taxable income generated by temporary differences reversing in the net operating loss carryforward periods and income from continuing operations. On December 22, 2017 the SEC issued Staff Accounting Bulletin No. 118 (SAB 118), which addresses income tax accounting implications of the Tax Act. Estimates were used to determine the balance of deferred tax assets and liabilities subject to changes in tax laws included in the Tax Act, as well as the reversal pattern of such deferred tax assets and liabilities in assessing the ability to realize deferred tax assets. We continue to analyze the effects of the Tax Act and will record any additional impacts as they are identified during the measurement period. During the three-month period ended June 30, 2018 , we did not identify or record any adjustments to the provisional amount previously disclosed in our Annual Report on Form 10-K for the year ended March 31, 2018 . As of June 30, 2018 and March 31, 2018 , we maintained unrecognized tax benefits of $226 million and $239 million , respectively. Cash paid for income taxes, net was $39 million and $32 million for the three-month periods ended June 30, 2018 and 2017 , respectively.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation, Claims and Assessments In March 2009, a stockholder brought suit, Bennett v. Sprint Nextel Corp. , in the U.S. District Court for the District of Kansas, alleging that Sprint Communications and three of its former officers violated Section 10(b) of the Exchange Act and Rule 10b-5 by failing adequately to disclose certain alleged operational difficulties subsequent to the Sprint-Nextel merger, and by purportedly issuing false and misleading statements regarding the write-down of goodwill. The district court granted final approval of a settlement in August 2015, which did not have a material impact to our financial statements. Five stockholder derivative suits related to this 2009 stockholder suit were filed against Sprint Communications and certain of its present and/or former officers and directors. The first, Murphy v. Forsee , was filed in state court in Kansas on April 8, 2009, was removed to federal court, and was stayed by the court pending resolution of the motion to dismiss the Bennett case; the second, Randolph v. Forsee , was filed on July 15, 2010 in state court in Kansas, was removed to federal court, and was remanded back to state court; the third, Ross-Williams v. Bennett, et al. , was filed in state court in Kansas on February 1, 2011; the fourth, Price v. Forsee, et al., was filed in state court in Kansas on April 15, 2011; and the fifth, Hartleib v. Forsee, et al ., was filed in federal court in Kansas on July 14, 2011. These cases were essentially stayed while the Bennett case was pending, and we have reached an agreement in principle to settle the matters, by agreeing to some governance provisions and by paying plaintiffs' attorneys fees in an immaterial amount. The court approved the settlement but reduced the plaintiffs' attorneys fees. On April 27, 2018, the court of appeals for the state of Kansas affirmed the settlement ruling. On May 30, 2018, plaintiffs filed a Petition for Review with the Supreme Court of Kansas. On April 19, 2012, the New York Attorney General filed a complaint alleging that Sprint Communications has fraudulently failed to collect and pay more than $100 million in New York sales taxes on receipts from its sale of wireless telephone services since July 2005. The complaint also seeks recovery of triple damages under the State False Claims Act, as well as penalties and interest. Sprint Communications moved to dismiss the complaint on June 14, 2012. On July 1, 2013, the court entered an order denying the motion to dismiss in large part, although it did dismiss certain counts or parts of certain counts. Sprint Communications appealed that order and the intermediate appellate court affirmed the order of the trial court. On October 20, 2015, the Court of Appeals of New York affirmed the decision of the appellate court that the tax statute requires us to collect and remit the disputed taxes. Our petition for certiorari to the U.S. Supreme Court on grounds of federal preemption was denied. We have paid the principal amount of tax at issue, under protest, while the suit is pending. The parties are now engaged in discovery in the trial court. We will continue to defend this matter vigorously and we do not expect the resolution of this matter to have a material adverse effect on our financial position or results of operations. Eight related stockholder derivative suits have been filed against Sprint Communications and certain of its current and former officers and directors. Each suit alleges generally that the individual defendants breached their fiduciary duties to Sprint Communications and its stockholders by allegedly permitting, and failing to disclose, the actions alleged in the suit filed by the New York Attorney General. One suit, filed by the Louisiana Municipal Police Employees Retirement System, was dismissed by a federal court. Two suits were filed in state court in Johnson County, Kansas and one of those suits was dismissed as premature; and five suits are pending in federal court in Kansas. The remaining Kansas suits have been stayed pending resolution of the Attorney General's suit. We do not expect the resolution of these matters to have a material adverse effect on our financial position or results of operations. Sprint Communications is also a defendant in a complaint filed by several stockholders of Clearwire Corporation (Clearwire) asserting claims for breach of fiduciary duty by Sprint Communications, and related claims and otherwise challenging the Clearwire acquisition. ACP Master, LTD, et al. v. Sprint Nextel Corp., et al. , was filed April 26, 2013, in Chancery Court in Delaware. Plaintiffs in the ACP Master, LTD suit have also filed suit requesting an appraisal of the fair value of their Clearwire stock. Trial of those cases took place in October and November 2016. On July 21, 2017, the Delaware Chancery Court ruled in Sprint's favor in both cases. It found no breach of fiduciary duty, and determined the value of Clearwire shares under the Delaware appraisal statute to be $2.13 per share plus statutory interest. The plaintiffs filed an appeal and on April 23, 2018, the Delaware Supreme Court affirmed the ruling of the Delaware Chancery Court in its entirety. This matter is concluded as no further appeals are possible. Sprint is currently involved in numerous court actions alleging that Sprint is infringing various patents. Most of these cases effectively seek only monetary damages. A small number of these cases are brought by companies that sell products and seek injunctive relief as well. These cases have progressed to various degrees and a small number may go to trial if they are not otherwise resolved. Adverse resolution of these cases could require us to pay significant damages, cease certain activities, or cease selling the relevant products and services. In many circumstances, we would be indemnified for monetary losses that we incur with respect to the actions of our suppliers or service providers. We do not expect the resolution of these cases to have a material adverse effect on our financial position or results of operations. In October 2013, the FCC Enforcement Bureau began to issue notices of apparent liability (NALs) to other Lifeline providers, imposing fines for intracarrier duplicate accounts identified by the government during its audit function. Those audits also identified a small percentage of potentially duplicative intracarrier accounts related to our Assurance Wireless ® business. No NAL has yet been issued with respect to Sprint and we do not know if one will be issued. Further, we are not able to reasonably estimate the amount of any claim for penalties that might be asserted. However, based on the information currently available, if a claim is asserted by the FCC, Sprint does not believe that any amount ultimately paid would be material to the Company’s results of operations or financial position. Various other suits, inquiries, proceedings and claims, either asserted or unasserted, including purported class actions typical for a large business enterprise and intellectual property matters, are possible or pending against us or our subsidiaries. As of June 30, 2018 , we have accrued $114 million associated with a state tax matter. If our interpretation of certain laws or regulations, including those related to various federal or state matters such as sales, use or property taxes, or other charges were found to be mistaken, it could result in payments by us. While it is not possible to determine the ultimate disposition of each of these proceedings and whether they will be resolved consistent with our beliefs, we expect that the outcome of such proceedings, individually or in the aggregate, will not have a material adverse effect on our financial position or results of operations. Spectrum Reconfiguration Obligations In 2004, the FCC adopted a Report and Order that included new rules regarding interference in the 800 MHz band and a comprehensive plan to reconfigure the 800 MHz band. The Report and Order provides for the exchange of a portion of our 800 MHz FCC spectrum licenses, and requires us to fund the cost incurred by public safety systems and other incumbent licensees to reconfigure the 800 MHz spectrum band. Also, in exchange, we received licenses for 10 MHz of nationwide spectrum in the 1.9 GHz band. The minimum cash obligation was $2.8 billion under the Report and Order. We are, however, obligated to continue to pay the full amount of the costs relating to the reconfiguration plan, although those costs have exceeded $2.8 billion . As required under the terms of the Report and Order, a letter of credit has been secured to provide assurance that funds will be available to pay the relocation costs of the incumbent users of the 800 MHz spectrum. The letter of credit was initially $2.5 billion , but has been reduced during the course of the proceeding to $115 million as of June 30, 2018 . Since the inception of the program, we have incurred payments of approximately $3.6 billion directly attributable to our performance under the Report and Order, including approximately $21 million during the three-month period ended June 30, 2018 . When incurred, substantially all costs are accounted for as additions to FCC licenses with the remainder as property, plant and equipment. Based on our expenses to date and on third party administrator's audits, we have exceeded $2.8 billion minimum cash obligation required by the FCC. On October 12, 2017, the FCC released a Declaratory Ruling that we have met the minimum cash obligation under the Report and Order and concluded that Sprint will not be required to make any payments to the U.S. Treasury. Completion of the 800 MHz band reconfiguration was initially required by June 26, 2008 and public safety reconfiguration is nearly complete across the country with the exception of the States of California, Texas and New Mexico. The FCC continues to grant the remaining 800 MHz public safety licensees additional time to complete their band reconfigurations which, in turn, delays our access to our 800 MHz replacement channels in these areas. In the non-border areas of these states where band reconfiguration is complete, Sprint has received its replacement spectrum in the 800 MHz band and Sprint is deploying 3G CDMA and 4G LTE on this spectrum in combination with its spectrum in the 1.9 GHz and 2.5 GHz bands.

Per Share Data

Per Share Data	3 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Per Share Data	Per Share Data Basic net income per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per common share adjusts basic net income per common share, computed using the treasury stock method, for the effects of potentially dilutive common shares, if the effect is not antidilutive. As of the three-month period ended June 30, 2018 , the computation of diluted net income per common share includes the effect of dilutive securities consisting of approximately 47 million options and restricted stock units and 4 million shares attributable to warrants, of which 2 million related to the warrant held by SoftBank. As of the three-month period ended June 30, 2018 , outstanding options to purchase shares totaling 9 million were not included in the computation of diluted net income per common share because to do so would have been antidilutive. As of the three-month period ended June 30, 2017 , outstanding options to purchase shares totaling 4 million were not included in the computation of diluted net income per common share because to do so would have been antidilutive. The computation of diluted net income per common share as of the three-month period ended June 30, 2017 includes the effect of dilutive securities consisting of approximately 59 million options and restricted stock units, in addition to 24 million shares attributable to warrants, of which 20 million relate to shares issuable under the warrant held by SoftBank. At the close of the merger with SoftBank, the warrant was issued at $5.25 per share. On July 10, 2018, SoftBank exercised its warrant in full to purchase 55 million shares of stock for $287 million .

Segments

Segments	3 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Segment	Segments Sprint operates two reportable segments: Wireless and Wireline. • Wireless primarily includes retail, wholesale, and affiliate revenue from a wide array of wireless voice and data transmission services, revenue from the sale of wireless devices (handsets and tablets) and accessories, and equipment rentals from devices leased to customers, all of which are generated in the U.S., Puerto Rico and the U.S. Virgin Islands. • Wireline primarily includes revenue from domestic and international wireline communication services provided to other communications companies and targeted business subscribers, in addition to our Wireless segment. We define segment earnings as wireless or wireline operating income (loss) before other segment expenses such as depreciation, amortization, severance, exit costs, goodwill impairments, asset impairments, and other items, if any, solely and directly attributable to the segment representing items of a non-recurring or unusual nature. Expense and income items excluded from segment earnings are managed at the corporate level. Transactions between segments are generally accounted for based on market rates, which we believe approximate fair value. The Company generally re-establishes these rates at the beginning of each fiscal year. The impact of intercompany pricing rate changes to our Wireline segment earnings does not affect our consolidated results of operations as our Wireless segment has an equivalent offsetting impact in cost of services. Segment financial information is as follows: Statement of Operations Information Wireless Wireline Corporate, Consolidated (in millions) Three Months Ended June 30, 2018 Net operating revenues $ 7,845 $ 276 $ 4 $ 8,125 Inter-segment revenues (1) — 62 (62 ) — Total segment operating expenses (2) (4,527 ) (380 ) 62 (4,845 ) Segment earnings $ 3,318 $ (42 ) $ 4 3,280 Less: Depreciation - network and other (1,023 ) Depreciation - equipment rentals (1,136 ) Amortization (171 ) Merger costs (2) (93 ) Other, net (3) (42 ) Operating income 815 Interest expense (637 ) Other income, net 42 Income before income taxes $ 220 Statement of Operations Information Wireless Wireline Corporate, Consolidated (in millions) Three Months Ended June 30, 2017 Net operating revenues $ 7,810 $ 343 $ 4 $ 8,157 Inter-segment revenues (1) — 90 (90 ) — Total segment operating expenses (4,944 ) (444 ) 84 (5,304 ) Segment earnings $ 2,866 $ (11 ) $ (2 ) 2,853 Less: Depreciation - network and other (977 ) Depreciation - equipment rentals (854 ) Amortization (223 ) Other, net (3) 364 Operating income 1,163 Interest expense (613 ) Other expense, net (52 ) Income before income taxes $ 498 Other Information Wireless Wireline Corporate and Consolidated (in millions) Capital expenditures for the three months ended June 30, 2018 $ 2,836 $ 51 $ 62 $ 2,949 Capital expenditures for the three months ended June 30, 2017 $ 2,324 $ 62 $ 124 $ 2,510 _________________ (1) Inter-segment revenues consist primarily of wireline services provided to the Wireless segment for resale to, or use by, wireless subscribers. (2) The three-month period ended June 30, 2018 , includes $ 93 million of merger-related costs which were recorded as selling, general and administrative expenses in the consolidated statements of comprehensive income. (3) Other, net for the three-month period ended June 30, 2018 consists of $34 million associated with the purchase of certain leased spectrum assets, which upon termination of the related spectrum leases resulted in the accelerated recognition of the unamortized favorable lease balances and $8 million of severance and exit costs primarily due to access termination charges. The three-month period ended June 30, 2017 consists of a $175 million net loss on disposal of property, plant and equipment, which consisted of a $181 million loss related to cell site construction costs that are no longer recoverable as a result of changes in our network plans, slightly offset by a $6 million gain. In addition, the three-month period ended June 30, 2017 includes a $479 million non-cash gain related to spectrum license exchanges with other carriers, a $55 million reduction of an accrual related to favorable developments in pending legal proceedings and a $5 million reversal of previously accrued contract termination costs primarily related to the termination of our relationship with General Wireless Operations Inc. (Radio Shack). Operating Revenues by Service and Products Wireless Wireline Corporate, Other and Eliminations (1) Consolidated (in millions) Three Months Ended June 30, 2018 Service revenue $ 5,170 $ 314 $ (62 ) $ 5,422 Wireless equipment sales 1,173 — — 1,173 Wireless equipment rentals 1,212 — — 1,212 Other 290 24 4 318 Total net operating revenues $ 7,845 $ 338 $ (58 ) $ 8,125 Operating Revenues by Service and Products Wireless Wireline Corporate, Other and Eliminations (1) Consolidated (in millions) Three Months Ended June 30, 2017 Service revenue (2) $ 5,465 $ 413 $ (90 ) $ 5,788 Wireless equipment sales 1,187 — — 1,187 Wireless equipment rentals 899 — — 899 Other (2) 259 20 4 283 Total net operating revenues $ 7,810 $ 433 $ (86 ) $ 8,157 _______________ (1) Revenues eliminated in consolidation consist primarily of wireline services provided to the Wireless segment for resale to or use by wireless subscribers. (2) Sprint is no longer reporting Lifeline subscribers due to regulatory changes resulting in tighter program restrictions. We have excluded these subscribers from our customer base for all periods presented, including our Assurance Wireless prepaid brand and subscribers through our wholesale Lifeline mobile virtual network operators (MVNO). The above tables reflect the reclassification of the related Assurance Wireless prepaid revenue within the Wireless segment from Wireless services to Other of $82 million for the three-month period ended June 30, 2017. Revenue associated with subscribers through our wholesale Lifeline MVNOs remains in Other following this change.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Jun. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related-Party Transactions In addition to agreements arising out of or relating to the SoftBank Merger, Sprint has entered into various other arrangements with SoftBank, its controlled affiliates or with third parties to which SoftBank Parties are also parties, including arrangements for international wireless roaming, wireless and wireline call termination, real estate, logistical management, and other services. Brightstar We have arrangements with Brightstar US, Inc. (Brightstar), whereby Brightstar provides supply chain and inventory management services to us in our indirect channels and whereby Sprint may sell new and used devices and new accessories to Brightstar for its own purposes. To facilitate certain of these arrangements, we have extended a $700 million credit line to Brightstar to assist with the purchasing and distribution of devices and accessories. As a result, we shifted our concentration of credit risk away from our indirect channel partners to Brightstar. As Brightstar is a subsidiary of SoftBank, we expect SoftBank will provide the necessary support to ensure that Brightstar will fulfill its obligations to us under these arrangements. However, we have no assurance that SoftBank will provide such support. The supply chain and inventory management arrangement included, among other things, that Brightstar may purchase inventory from the original equipment manufacturers to sell directly to our indirect dealers. As compensation for these services, we remit per unit fees to Brightstar for each device sold to dealers or retailers in our indirect channels. During the three-month periods ended June 30, 2018 and 2017 , we incurred fees under these arrangements totaling $17 million and $23 million , respectively, which are recognized in "Cost of equipment sales" and "Selling, general and administrative" expenses in the consolidated statements of comprehensive income. Additionally, we have an arrangement with Brightstar whereby they perform certain of our reverse logistics including device buyback, trade-in technology and related services. During the three-month period ended September 30, 2017, we entered into an arrangement with Brightstar whereby accessories previously procured by us and sold to customers in our direct channels will now be procured and consigned to us from Brightstar. Amounts billed from the sale of accessory inventory are remitted to Brightstar. In exchange for our efforts to sell accessory inventory owned by Brightstar, we will receive a fixed fee from Brightstar for each device activated in our direct channels. For the three-month period ended June 30, 2018 , Sprint earned fees under these arrangements of $49 million , which are recognized as other revenue within "Service revenue" in the consolidated statements of comprehensive income. Amounts included in our consolidated financial statements associated with these supply chain and inventory management arrangements with Brightstar were as follows: Consolidated balance sheets: June 30, March 31, (in millions) Accounts receivable $ 125 $ 188 Accounts payable $ 79 $ 88 Three Months Ended Consolidated statements of comprehensive income: June 30, 2018 2017 (in millions) Equipment sales $ 413 $ 350 Cost of equipment sales $ 432 $ 356

Guarantor Financial Information

Guarantor Financial Information	3 Months Ended
	Jun. 30, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Guarantor Financial Information	Guarantor Financial Information On September 11, 2013, Sprint Corporation issued $2.25 billion aggregate principal amount of 7.250% notes due 2021 and $4.25 billion aggregate principal amount of 7.875% notes due 2023 in a private placement transaction with registration rights. On December 12, 2013, Sprint Corporation issued $2.5 billion aggregate principal amount of 7.125% notes due 2024 in a private placement transaction with registration rights. Each of these issuances is fully and unconditionally guaranteed by Sprint Communications (Subsidiary Guarantor), which is a 100% owned subsidiary of Sprint Corporation (Parent/Issuer). In connection with the foregoing, in November 2014, the Company and Sprint Communications completed an offer to exchange the notes for a new issue of substantially identical exchange notes registered under the Securities Act of 1933. We did not receive any proceeds from this exchange offer. In addition, on February 24, 2015, Sprint Corporation issued $1.5 billion aggregate principal amount of 7.625% notes due 2025, and on February 20, 2018, Sprint Corporation issued $1.5 billion aggregate principal amount of 7.625% senior notes due 2026, which are fully and unconditionally guaranteed by Sprint Communications. During the three-month periods ended June 30, 2018 and 2017 , there were non-cash equity distributions from the non-guarantor subsidiaries to Subsidiary Guarantor of approximately $1.5 billion and non-cash equity contributions from Subsidiary Guarantor to the non-guarantor subsidiaries of $42 million , respectively, as a result of organizational restructuring for tax purposes. As of June 30, 2018 , there were $24.0 billion of intercompany notes issued by the Subsidiary Guarantor to the non-guarantor subsidiaries. The notes are subordinated to all unaffiliated third-party obligations of Sprint Corporation and its subsidiaries. Under the Subsidiary Guarantor's secured revolving bank credit facility, the Subsidiary Guarantor is currently restricted from paying cash dividends to the Parent/Issuer or any non-guarantor subsidiary because the ratio of total indebtedness to adjusted EBITDA (each as defined in the applicable agreement) exceeds 2.5 to 1.0 . Sprint has a Receivables Facility providing for the sale of eligible wireless service, installment and certain future lease receivables. In April 2016, Sprint entered into the Tranche 2 transaction to sell and leaseback certain leased devices and a separate network equipment sale-leaseback transaction to sell and leaseback certain network equipment. In October 2016, Sprint transferred certain directly held and third-party leased spectrum licenses to wholly-owned bankruptcy-remote special purpose entities as part of the spectrum financing transaction. In connection with each of the Receivables Facility, Tranche 2, and the spectrum financing transaction, Sprint formed certain wholly-owned bankruptcy-remote subsidiaries that are included in the non-guarantor subsidiaries' condensed consolidated financial information. In addition, the bankruptcy-remote special purpose entities formed in connection with the network equipment sale-leaseback transaction, but which are not Sprint subsidiaries, are included in the non-guarantor subsidiaries' condensed consolidated financial information. Each of these is a separate legal entity with its own separate creditors who will be entitled, prior to and upon its liquidation, to be satisfied out of its assets prior to any assets becoming available to Sprint (see Note 7. Long-Term Debt, Financing and Capital Lease Obligations). We have accounted for investments in subsidiaries using the equity method. Presented below is the condensed consolidating financial information. CONDENSED CONSOLIDATING BALANCE SHEET June 30, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) ASSETS Current assets: Cash and cash equivalents $ — $ 3,962 $ 416 $ — $ 4,378 Short-term investments — 4,008 — — 4,008 Accounts and notes receivable, net 236 481 3,492 (717 ) 3,492 Current portion of notes receivable from consolidated affiliates — 424 — (424 ) — Device and accessory inventory — — 622 — 622 Prepaid expenses and other current assets 3 12 880 — 895 Total current assets 239 8,887 5,410 (1,141 ) 13,395 Investments in subsidiaries 27,885 18,777 — (46,662 ) — Property, plant and equipment, net — — 20,538 — 20,538 Costs to acquire a customer contract — — 1,294 — 1,294 Due from consolidated affiliates 6 1,711 — (1,717 ) — Notes receivable from consolidated affiliates 11,864 23,567 — (35,431 ) — Intangible assets Goodwill — — 6,586 — 6,586 FCC licenses and other — — 41,368 — 41,368 Definite-lived intangible assets, net — — 2,245 — 2,245 Other assets — 198 825 — 1,023 Total assets $ 39,994 $ 53,140 $ 78,266 $ (84,951 ) $ 86,449 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable $ — $ — $ 3,143 $ — $ 3,143 Accrued expenses and other current liabilities 237 414 3,724 (717 ) 3,658 Current portion of long-term debt, financing and capital lease obligations — 1,817 3,029 — 4,846 Current portion of notes payable to consolidated affiliates — — 424 (424 ) — Total current liabilities 237 2,231 10,320 (1,141 ) 11,647 Long-term debt, financing and capital lease obligations 11,864 10,348 13,559 — 35,771 Notes payable to consolidated affiliates — 11,864 23,567 (35,431 ) — Deferred tax liabilities — — 7,704 — 7,704 Other liabilities — 812 2,570 — 3,382 Due to consolidated affiliates — — 1,717 (1,717 ) — Total liabilities 12,101 25,255 59,437 (38,289 ) 58,504 Commitments and contingencies Total stockholders' equity 27,893 27,885 18,777 (46,662 ) 27,893 Noncontrolling interests — — 52 — 52 Total equity 27,893 27,885 18,829 (46,662 ) 27,945 Total liabilities and equity $ 39,994 $ 53,140 $ 78,266 $ (84,951 ) $ 86,449 CONDENSED CONSOLIDATING BALANCE SHEET March 31, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) ASSETS Current assets: Cash and cash equivalents $ — $ 6,222 $ 388 $ — $ 6,610 Short-term investments — 2,354 — — 2,354 Accounts and notes receivable, net 99 248 3,711 (347 ) 3,711 Current portion of notes receivable from consolidated affiliates — 424 — (424 ) — Device and accessory inventory — — 1,003 — 1,003 Prepaid expenses and other current assets 5 9 561 — 575 Total current assets 104 9,257 5,663 (771 ) 14,253 Investments in subsidiaries 26,351 18,785 — (45,136 ) — Property, plant and equipment, net — — 19,925 — 19,925 Due from consolidated affiliates 1 — 594 (595 ) — Notes receivable from consolidated affiliates 11,887 23,991 — (35,878 ) — Intangible assets Goodwill — — 6,586 — 6,586 FCC licenses and other — — 41,309 — 41,309 Definite-lived intangible assets, net — — 2,465 — 2,465 Other assets — 185 736 — 921 Total assets $ 38,343 $ 52,218 $ 77,278 $ (82,380 ) $ 85,459 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable $ — $ — $ 3,409 $ — $ 3,409 Accrued expenses and other current liabilities 100 341 3,868 (347 ) 3,962 Current portion of long-term debt, financing and capital lease obligations — 1,832 1,597 — 3,429 Current portion of notes payable to consolidated affiliates — — 424 (424 ) — Total current liabilities 100 2,173 9,298 (771 ) 10,800 Long-term debt, financing and capital lease obligations 11,887 10,381 15,195 — 37,463 Notes payable to consolidated affiliates — 11,887 23,991 (35,878 ) — Deferred tax liabilities — — 7,294 — 7,294 Other liabilities — 831 2,652 — 3,483 Due to consolidated affiliates — 595 — (595 ) — Total liabilities 11,987 25,867 58,430 (37,244 ) 59,040 Commitments and contingencies Total stockholders' equity 26,356 26,351 18,785 (45,136 ) 26,356 Noncontrolling interests — — 63 — 63 Total equity 26,356 26,351 18,848 (45,136 ) 26,419 Total liabilities and equity $ 38,343 $ 52,218 $ 77,278 $ (82,380 ) $ 85,459 CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Net operating revenues: Service revenue $ — $ — $ 5,740 $ — $ 5,740 Equipment sales — — 1,173 — 1,173 Equipment rentals — — 1,212 — 1,212 — — 8,125 — 8,125 Net operating expenses: Cost of services (exclusive of depreciation and amortization included below) — — 1,677 — 1,677 Cost of equipment sales — — 1,270 — 1,270 Cost of equipment rentals (exclusive of depreciation below) — — 124 — 124 Selling, general and administrative — — 1,867 — 1,867 Depreciation - network and other — — 1,023 — 1,023 Depreciation - equipment rentals — — 1,136 — 1,136 Amortization — — 171 — 171 Other, net — — 42 — 42 — — 7,310 — 7,310 Operating income — — 815 — 815 Other income (expense): Interest income 226 547 2 (733 ) 42 Interest expense (226 ) (571 ) (573 ) 733 (637 ) Earnings (losses) of subsidiaries 176 202 — (378 ) — Other (expense) income, net — (2 ) 2 — — 176 176 (569 ) (378 ) (595 ) Income (loss) before income taxes 176 176 246 (378 ) 220 Income tax expense — — (47 ) — (47 ) Net income (loss) 176 176 199 (378 ) 173 Less: Net loss attributable to noncontrolling interests — — 3 — 3 Net income (loss) attributable to Sprint Corporation 176 176 202 (378 ) 176 Other comprehensive (loss) income (4 ) (4 ) (13 ) 17 (4 ) Comprehensive income (loss) $ 172 $ 172 $ 186 $ (361 ) $ 169 CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2017 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Net operating revenues: Service revenue $ — $ — $ 6,071 $ — $ 6,071 Equipment sales — — 1,187 — 1,187 Equipment rentals — — 899 — 899 — — 8,157 — 8,157 Net operating expenses: Cost of services (exclusive of depreciation and amortization included below) — — 1,709 — 1,709 Cost of equipment sales — — 1,545 — 1,545 Cost of equipment rentals (exclusive of depreciation below) — — 112 — 112 Selling, general and administrative — — 1,938 — 1,938 Depreciation - network and other — — 977 — 977 Depreciation - equipment rentals — — 854 — 854 Amortization — — 223 — 223 Other, net — (55 ) (309 ) — (364 ) — (55 ) 7,049 — 6,994 Operating income — 55 1,108 — 1,163 Other income (expense): Interest income 198 45 4 (228 ) 19 Interest expense (198 ) (351 ) (292 ) 228 (613 ) Earnings (losses) of subsidiaries 206 524 — (730 ) — Other expense, net — (67 ) (4 ) — (71 ) 206 151 (292 ) (730 ) (665 ) Income (loss) before income taxes 206 206 816 (730 ) 498 Income tax expense — — (292 ) — (292 ) Net income (loss) 206 206 524 (730 ) 206 Other comprehensive (loss) income (4 ) (4 ) 5 (1 ) (4 ) Comprehensive income (loss) $ 202 $ 202 $ 529 $ (731 ) $ 202 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Three Months Ended June 30, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Cash flows from operating activities: Net cash (used in) provided by operating activities $ — $ (231 ) $ 2,661 $ — $ 2,430 Cash flows from investing activities: Capital expenditures - network and other — — (1,132 ) — (1,132 ) Capital expenditures - leased devices — — (1,817 ) — (1,817 ) Expenditures relating to FCC licenses — — (59 ) — (59 ) Proceeds from sales and maturities of short-term investments — 810 — — 810 Purchases of short-term investments — (2,464 ) — — (2,464 ) Change in amounts due from/due to consolidated affiliates 28 (778 ) — 750 — Proceeds from sales of assets and FCC licenses — — 133 — 133 Proceeds from deferred purchase price from sale of receivables — — 170 — 170 Proceeds from intercompany note advance to consolidated affiliate — 424 — (424 ) — Other, net — — (10 ) — (10 ) Net cash provided by (used in) investing activities 28 (2,008 ) (2,715 ) 326 (4,369 ) Cash flows from financing activities: Proceeds from debt and financings — — 1,370 — 1,370 Repayments of debt, financing and capital lease obligations — (10 ) (1,405 ) — (1,415 ) Debt financing costs (28 ) (9 ) (211 ) — (248 ) Change in amounts due from/due to consolidated affiliates — — 750 (750 ) — Repayments of intercompany note advance from parent — — (424 ) 424 — Other, net — (2 ) — — (2 ) Net cash (used in) provided by financing activities (28 ) (21 ) 80 (326 ) (295 ) Net (decrease) increase in cash, cash equivalents and restricted cash — (2,260 ) 26 — (2,234 ) Cash, cash equivalents and restricted cash, beginning of period — 6,222 437 — 6,659 Cash, cash equivalents and restricted cash, end of period $ — $ 3,962 $ 463 $ — $ 4,425 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Three Months Ended June 30, 2017 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Cash flows from operating activities: Net cash (used in) provided by operating activities $ — $ (394 ) $ 2,318 $ — $ 1,924 Cash flows from investing activities: Capital expenditures - network and other — — (1,151 ) — (1,151 ) Capital expenditures - leased devices — — (1,359 ) — (1,359 ) Expenditures relating to FCC licenses — — (13 ) — (13 ) Proceeds from sales and maturities of short-term investments — 2,594 — — 2,594 Purchases of short-term investments — (1,499 ) — — (1,499 ) Change in amounts due from/due to consolidated affiliates — 588 — (588 ) — Proceeds from sales of assets and FCC licenses — — 101 — 101 Proceeds from deferred purchase price from sale of receivables — — 375 — 375 Other, net — 2 (3 ) — (1 ) Net cash provided by (used in) investing activities — 1,685 (2,050 ) (588 ) (953 ) Cash flows from financing activities: Proceeds from debt and financings — — 902 — 902 Repayments of debt, financing and capital lease obligations — (1,598 ) (523 ) — (2,121 ) Call premiums paid on debt redemptions — (129 ) — — (129 ) Change in amounts due from/due to consolidated affiliates — — (588 ) 588 — Other, net — 9 (24 ) — (15 ) Net cash (used in) provided by financing activities — (1,718 ) (233 ) 588 (1,363 ) Net (decrease) increase in cash, cash equivalents and restricted cash — (427 ) 35 — (392 ) Cash, cash equivalents and restricted cash, beginning of period — 2,461 481 — 2,942 Cash, cash equivalents and restricted cash, end of period $ — $ 2,034 $ 516 $ — $ 2,550

New Accounting Pronouncements (

New Accounting Pronouncements (Tables)	3 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Schedule of Adjustments for Changes in Accounting Standards Updates	The cumulative after-tax effect of the changes made to our consolidated balance sheet for the adoption of Topic 606 and other ASUs effective for the Company on April 1, 2018 were as follows: Adjustments due to March 31, 2018 Topic 606 Other ASUs April 1, 2018 (in millions) ASSETS Current assets: Accounts and notes receivable, net $ 3,711 $ 97 $ — $ 3,808 Device and accessory inventory 1,003 (24 ) — 979 Prepaid expenses and other current assets 575 271 — 846 Costs to acquire a customer contract — 1,219 — 1,219 Other assets 921 43 — 964 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accrued expenses and other current liabilities $ 3,962 $ (35 ) $ — $ 3,927 Deferred tax liabilities 7,294 366 — 7,660 Other liabilities 3,483 (32 ) — 3,451 Stockholders' equity: (Accumulated deficit) retained earnings (1,255 ) 1,307 8 60 Accumulated other comprehensive loss (313 ) — (8 ) (321 ) A reconciliation of the adjustments from the adoption of Topic 606 relative to Topic 605 on our consolidated statements of comprehensive income and balance sheet were as follows: Three Months Ended June 30, 2018 As reported Balances without adoption of Topic 606 Change (in millions, except per share amounts) Net operating revenues: Service revenue $ 5,740 $ 5,883 $ (143 ) Equipment sales 1,173 892 281 Equipment rentals 1,212 1,228 (16 ) 8,125 8,003 122 Net operating expenses: Cost of services (exclusive of depreciation and amortization included below) 1,677 1,688 (11 ) Cost of equipment sales 1,270 1,248 22 Cost of equipment rentals (exclusive of depreciation below) 124 124 — Selling, general and administrative 1,867 1,948 (81 ) Depreciation - network and other 1,023 1,023 — Depreciation - equipment rentals 1,136 1,136 — Amortization 171 171 — Other, net 42 42 — 7,310 7,380 (70 ) Operating income 815 623 192 Total other expense (595 ) (595 ) — Income before income taxes 220 28 192 Income tax expense (47 ) (7 ) (40 ) Net income 173 21 152 Less: Net loss attributable to noncontrolling interests 3 3 — Net income attributable to Sprint Corporation $ 176 $ 24 $ 152 Basic net income per common share $ 0.04 $ 0.01 $ 0.03 Diluted net income per common share $ 0.04 $ 0.01 $ 0.03 Basic weighted average common shares outstanding 4,010 4,010 — Diluted weighted average common shares outstanding 4,061 4,061 — June 30, 2018 As reported Balances without adoption of Topic 606 Change (in millions) ASSETS Current assets: Accounts and notes receivable $ 3,492 $ 3,404 $ 88 Device and accessory inventory 622 644 (22 ) Prepaid expenses and other current assets 895 557 338 Costs to acquire a customer contract 1,294 — 1,294 Other assets 1,023 919 104 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accrued expenses and other current liabilities $ 3,658 $ 3,690 $ (32 ) Deferred tax liabilities 7,704 7,298 406 Other liabilities 3,382 3,413 (31 ) Stockholders' equity: Retained earnings (accumulated deficit) 236 (1,223 ) 1,459

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of carrying amount and estimated fair values of our exchangeable notes as well as current and long-term debt	The following table presents carrying amounts and estimated fair values of current and long-term debt and financing obligations: Carrying amount at June 30, 2018 Estimated Fair Value Using Input Type Quoted prices in active markets Observable Unobservable Total estimated fair value (in millions) Current and long-term debt and financing obligations $ 40,784 $ 37,477 $ — $ 3,928 $ 41,405 Carrying amount at March 31, 2018 Estimated Fair Value Using Input Type Quoted prices in active markets Observable Unobservable Total estimated fair value (in millions) Current and long-term debt and financing obligations $ 40,820 $ 37,549 $ — $ 3,737 $ 41,286

Installment Receivables (Tables

Installment Receivables (Tables)	3 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Summary of Installment Receivables	The following table summarizes the installment receivables: June 30, March 31, (in millions) Installment receivables, gross $ 1,232 $ 1,472 Deferred interest (50 ) (106 ) Installment receivables, net of deferred interest 1,182 1,366 Allowance for credit losses (199 ) (217 ) Installment receivables, net $ 983 $ 1,149 Classified in the consolidated balance sheets as: Accounts and notes receivable, net $ 841 $ 995 Other assets 142 154 Installment receivables, net $ 983 $ 1,149
Balance and Aging of Financing Receivables by Credit Category	The balance and aging of installment receivables on a gross basis by credit category were as follows: June 30, 2018 March 31, 2018 Prime Subprime Total Prime Subprime Total (in millions) (in millions) Unbilled $ 782 $ 337 $ 1,119 $ 951 $ 391 $ 1,342 Billed - current 62 24 86 69 29 98 Billed - past due 15 12 27 17 15 32 Installment receivables, gross $ 859 $ 373 $ 1,232 $ 1,037 $ 435 $ 1,472
Schedule of Activity in the Deferred Interest Allowance for Credit Losses	Activity in the deferred interest and allowance for credit losses for the installment receivables was as follows: Three Months Ended Twelve Months Ended June 30, 2018 March 31, 2018 (in millions) Deferred interest and allowance for credit losses, beginning of period $ 323 $ 506 Adjustment to deferred interest on short- and long-term installment receivables due to Topic 606 (50 ) — Bad debt expense 15 142 Write-offs, net of recoveries (33 ) (224 ) Change in deferred interest on short- and long-term installment receivables (6 ) (101 ) Deferred interest and allowance for credit losses, end of period $ 249 $ 323

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-Lived Intangible Assets	The following provides the activity of indefinite-lived intangible assets within the consolidated balance sheets: March 31, Net Additions June 30, (in millions) FCC licenses $ 37,274 $ 59 $ 37,333 Trademarks 4,035 — 4,035 Goodwill (1) 6,586 — 6,586 $ 47,895 $ 59 $ 47,954 _________________ (1) Through June 30, 2018 , there is no accumulated impairment losses for goodwill.
Intangible Assets Subject to Amortization	June 30, 2018 March 31, 2018 Useful Lives Gross Accumulated Net Gross Accumulated Net (in millions) Customer relationships 5 to 8 years $ 6,562 $ (5,623 ) $ 939 $ 6,562 $ (5,462 ) $ 1,100 Other intangible assets: Favorable spectrum leases 23 years 856 (216 ) 640 856 (172 ) 684 Favorable tower leases 7 years 335 (188 ) 147 335 (179 ) 156 Trademarks 2 to 34 years 520 (78 ) 442 520 (74 ) 446 Other 5 to 10 years 131 (54 ) 77 129 (50 ) 79 Total other intangible assets 1,842 (536 ) 1,306 1,840 (475 ) 1,365 Total definite-lived intangible assets $ 8,404 $ (6,159 ) $ 2,245 $ 8,402 $ (5,937 ) $ 2,465

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Line Items]
Schedule of Property, Plant and Equipment	The following table presents the components of property, plant and equipment and the related accumulated depreciation: June 30, March 31, (in millions) Land $ 254 $ 254 Network equipment, site costs and related software 23,144 22,930 Buildings and improvements 817 813 Non-network internal use software, office equipment, leased devices and other 11,740 11,149 Construction in progress 3,001 2,202 Less: accumulated depreciation (18,418 ) (17,423 ) Property, plant and equipment, net $ 20,538 $ 19,925
Leased devices [Member]
Property, Plant and Equipment [Line Items]
Schedule of Property, Plant and Equipment	The following table presents leased devices and the related accumulated depreciation: June 30, March 31, (in millions) Leased devices $ 10,145 $ 9,592 Less: accumulated depreciation (3,932 ) (3,580 ) Leased devices, net $ 6,213 $ 6,012

Long-Term Debt, Financing and28

Long-Term Debt, Financing and Capital Lease Obligations (Tables)	3 Months Ended
	Jun. 30, 2018
Long-term Debt and Capital Lease Obligations [Abstract]
Schedule of Long-term Debt Instruments	Interest Rates Maturities June 30, March 31, (in millions) Notes Senior notes Sprint Corporation 7.13 - 7.88% 2021 - 2026 $ 12,000 $ 12,000 Sprint Communications, Inc. 6.00 - 11.50% 2020 - 2022 4,980 4,980 Sprint Capital Corporation 6.88 - 8.75% 2019 - 2032 6,204 6,204 Senior secured notes Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC 3.36 - 5.15% 2021 - 2028 6,781 7,000 Guaranteed notes Sprint Communications, Inc. 7.00 - 9.00% 2018 - 2020 2,753 2,753 Credit facilities Secured revolving bank credit facility 4.63% 2021 — — Secured term loan 4.63% 2024 3,950 3,960 PRWireless term loan 7.58% 2020 182 182 Export Development Canada (EDC) 4.59% 2019 300 300 Secured equipment credit facilities 3.75 - 4.45% 2020 - 2021 462 527 Accounts receivable facility 2.83 - 3.54% 2020 2,697 2,411 Financing obligations, capital lease and other obligations 2.35 - 12.00% 2018 - 2026 646 686 Net premiums and debt financing costs (338 ) (111 ) 40,617 40,892 Less current portion (4,846 ) (3,429 ) Long-term debt, financing and capital lease obligations $ 35,771 $ 37,463

Revenues from Contracts with 29

Revenues from Contracts with Customers (Tables)	3 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregated Reported Revenue	The following table presents disaggregated reported revenue by category: Three Months Ended June 30, 2018 (in millions) Service revenue Postpaid $ 4,188 Prepaid 982 Wireless wholesale and affiliate 294 Wireline 276 Total service revenue 5,740 Equipment sales 1,173 Equipment rentals 1,212 Total revenue $ 8,125
Schedule of Contract Assets and Contract Liabilities	The following table presents the opening and closing balances of our contract assets, contract liabilities, and receivables balances, as well as capitalized costs associated with contracts with customers: June 30, April 1, 2018 2018 (in millions) Contract assets and liabilities Contract assets (1) $ 550 $ 432 Billed trade receivables 2,470 2,559 Unbilled trade receivables 1,040 1,250 Contract liabilities (2) 1,045 1,104 Other related assets and liabilities Other related assets: Capitalized costs to acquire a customer contract: Sales commissions - opening balance $ 1,219 Sales commissions - additions 266 Amortization of capitalized sales commissions (191 ) Net costs to acquire a customer contract $ 1,294 (1) The fluctuation correlates directly to the execution of new customer contracts and invoicing and collections from customers in the normal course of business. (2) Revenue recognized during the period, which was included within the beginning contract liability balance, amounts to $867 million .
Schedule of Remaining Performance Obligations	The aggregate amount of total transaction price allocated to performance obligations in contracts existing as of the balance sheet date, which are wholly unsatisfied or partially unsatisfied as of the end of the reporting period, and the expected time frame for satisfaction of those unsatisfied or partially unsatisfied performance obligations, are as follows (in millions): Remainder of year ending March 31, 2019 $ 7,281 Year ending March 31, 2020 2,358 Thereafter 4 Total $ 9,643

Severance and Exit Costs (Table

Severance and Exit Costs (Tables)	3 Months Ended
	Jun. 30, 2018
Restructuring and Related Activities [Abstract]
Schedule of Activity in the Severance and Exit Costs Liability	The following provides the activity in the severance and exit costs liability included in "Accounts payable," "Accrued expenses and other current liabilities" and "Other liabilities" within the consolidated balance sheets: March 31, Net (Benefit) Expense Cash Payments and Other June 30, (in millions) Lease exit costs $ 165 $ — $ (17 ) $ 148 Severance costs 64 2 (1) (32 ) 34 Access exit costs 19 6 (2) (3 ) 22 $ 248 $ 8 $ (52 ) $ 204 _________________ (1) For the three-month period ended June 30, 2018 , we recognized costs of $2 million (Wireless only). (2) For the three-month period ended June 30, 2018 , we recognized costs of $6 million ( $1 million Wireless , $5 million Wireline) as "Severance and exit costs."

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Factors Causing Variation in Effective Tax Rate From US Federal Statutory Rate	The differences that caused our effective income tax rates to differ from the U.S. federal statutory rates for the three-month periods ended June 30, 2018 and 2017 , respectively, were as follows: Three Months Ended 2018 2017 (in millions) Income tax expense at the federal statutory rate $ (46 ) $ (174 ) Effect of: State income taxes, net of federal income tax effect (15 ) (22 ) State law changes, net of federal income tax effect 24 3 Increase deferred tax liability for organizational restructuring (13 ) — Increase deferred tax liability for business activity changes — (65 ) Credit for increasing research activities — 4 Change in federal and state valuation allowance 6 (33 ) Other, net (3 ) (5 ) Income tax expense $ (47 ) $ (292 ) Effective income tax rate 21.4 % 58.6 %
Schedule of Deferred Tax Assets and Liabilities

Segments (Tables)

Segments (Tables)	3 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Statement of Operations Information	Segment financial information is as follows: Statement of Operations Information Wireless Wireline Corporate, Consolidated (in millions) Three Months Ended June 30, 2018 Net operating revenues $ 7,845 $ 276 $ 4 $ 8,125 Inter-segment revenues (1) — 62 (62 ) — Total segment operating expenses (2) (4,527 ) (380 ) 62 (4,845 ) Segment earnings $ 3,318 $ (42 ) $ 4 3,280 Less: Depreciation - network and other (1,023 ) Depreciation - equipment rentals (1,136 ) Amortization (171 ) Merger costs (2) (93 ) Other, net (3) (42 ) Operating income 815 Interest expense (637 ) Other income, net 42 Income before income taxes $ 220 Statement of Operations Information Wireless Wireline Corporate, Consolidated (in millions) Three Months Ended June 30, 2017 Net operating revenues $ 7,810 $ 343 $ 4 $ 8,157 Inter-segment revenues (1) — 90 (90 ) — Total segment operating expenses (4,944 ) (444 ) 84 (5,304 ) Segment earnings $ 2,866 $ (11 ) $ (2 ) 2,853 Less: Depreciation - network and other (977 ) Depreciation - equipment rentals (854 ) Amortization (223 ) Other, net (3) 364 Operating income 1,163 Interest expense (613 ) Other expense, net (52 ) Income before income taxes $ 498 Other Information Wireless Wireline Corporate and Consolidated (in millions) Capital expenditures for the three months ended June 30, 2018 $ 2,836 $ 51 $ 62 $ 2,949 Capital expenditures for the three months ended June 30, 2017 $ 2,324 $ 62 $ 124 $ 2,510 _________________ (1) Inter-segment revenues consist primarily of wireline services provided to the Wireless segment for resale to, or use by, wireless subscribers. (2) The three-month period ended June 30, 2018 , includes $ 93 million of merger-related costs which were recorded as selling, general and administrative expenses in the consolidated statements of comprehensive income. (3) Other, net for the three-month period ended June 30, 2018 consists of $34 million associated with the purchase of certain leased spectrum assets, which upon termination of the related spectrum leases resulted in the accelerated recognition of the unamortized favorable lease balances and $8 million of severance and exit costs primarily due to access termination charges. The three-month period ended June 30, 2017 consists of a $175 million net loss on disposal of property, plant and equipment, which consisted of a $181 million loss related to cell site construction costs that are no longer recoverable as a result of changes in our network plans, slightly offset by a $6 million gain. In addition, the three-month period ended June 30, 2017 includes a $479 million non-cash gain related to spectrum license exchanges with other carriers, a $55 million reduction of an accrual related to favorable developments in pending legal proceedings and a $5 million reversal of previously accrued contract termination costs primarily related to the termination of our relationship with General Wireless Operations Inc. (Radio Shack).
Operating Revenues by Service and Products	Operating Revenues by Service and Products Wireless Wireline Corporate, Other and Eliminations (1) Consolidated (in millions) Three Months Ended June 30, 2018 Service revenue $ 5,170 $ 314 $ (62 ) $ 5,422 Wireless equipment sales 1,173 — — 1,173 Wireless equipment rentals 1,212 — — 1,212 Other 290 24 4 318 Total net operating revenues $ 7,845 $ 338 $ (58 ) $ 8,125 Operating Revenues by Service and Products Wireless Wireline Corporate, Other and Eliminations (1) Consolidated (in millions) Three Months Ended June 30, 2017 Service revenue (2) $ 5,465 $ 413 $ (90 ) $ 5,788 Wireless equipment sales 1,187 — — 1,187 Wireless equipment rentals 899 — — 899 Other (2) 259 20 4 283 Total net operating revenues $ 7,810 $ 433 $ (86 ) $ 8,157 _______________ (1) Revenues eliminated in consolidation consist primarily of wireline services provided to the Wireless segment for resale to or use by wireless subscribers. (2) Sprint is no longer reporting Lifeline subscribers due to regulatory changes resulting in tighter program restrictions. We have excluded these subscribers from our customer base for all periods presented, including our Assurance Wireless prepaid brand and subscribers through our wholesale Lifeline mobile virtual network operators (MVNO). The above tables reflect the reclassification of the related Assurance Wireless prepaid revenue within the Wireless segment from Wireless services to Other of $82 million for the three-month period ended June 30, 2017. Revenue associated with subscribers through our wholesale Lifeline MVNOs remains in Other following this change.

Related Party Transactions (Tab

Related Party Transactions (Tables)	3 Months Ended
	Jun. 30, 2018
Brightstar [Member]
Related Party Transaction [Line Items]
Schedule of Amounts Included in Consolidated Financial Statements	Amounts included in our consolidated financial statements associated with these supply chain and inventory management arrangements with Brightstar were as follows: Consolidated balance sheets: June 30, March 31, (in millions) Accounts receivable $ 125 $ 188 Accounts payable $ 79 $ 88 Three Months Ended Consolidated statements of comprehensive income: June 30, 2018 2017 (in millions) Equipment sales $ 413 $ 350 Cost of equipment sales $ 432 $ 356

Guarantor Financial Informati34

Guarantor Financial Information (Tables)	3 Months Ended
	Jun. 30, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheet	CONDENSED CONSOLIDATING BALANCE SHEET June 30, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) ASSETS Current assets: Cash and cash equivalents $ — $ 3,962 $ 416 $ — $ 4,378 Short-term investments — 4,008 — — 4,008 Accounts and notes receivable, net 236 481 3,492 (717 ) 3,492 Current portion of notes receivable from consolidated affiliates — 424 — (424 ) — Device and accessory inventory — — 622 — 622 Prepaid expenses and other current assets 3 12 880 — 895 Total current assets 239 8,887 5,410 (1,141 ) 13,395 Investments in subsidiaries 27,885 18,777 — (46,662 ) — Property, plant and equipment, net — — 20,538 — 20,538 Costs to acquire a customer contract — — 1,294 — 1,294 Due from consolidated affiliates 6 1,711 — (1,717 ) — Notes receivable from consolidated affiliates 11,864 23,567 — (35,431 ) — Intangible assets Goodwill — — 6,586 — 6,586 FCC licenses and other — — 41,368 — 41,368 Definite-lived intangible assets, net — — 2,245 — 2,245 Other assets — 198 825 — 1,023 Total assets $ 39,994 $ 53,140 $ 78,266 $ (84,951 ) $ 86,449 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable $ — $ — $ 3,143 $ — $ 3,143 Accrued expenses and other current liabilities 237 414 3,724 (717 ) 3,658 Current portion of long-term debt, financing and capital lease obligations — 1,817 3,029 — 4,846 Current portion of notes payable to consolidated affiliates — — 424 (424 ) — Total current liabilities 237 2,231 10,320 (1,141 ) 11,647 Long-term debt, financing and capital lease obligations 11,864 10,348 13,559 — 35,771 Notes payable to consolidated affiliates — 11,864 23,567 (35,431 ) — Deferred tax liabilities — — 7,704 — 7,704 Other liabilities — 812 2,570 — 3,382 Due to consolidated affiliates — — 1,717 (1,717 ) — Total liabilities 12,101 25,255 59,437 (38,289 ) 58,504 Commitments and contingencies Total stockholders' equity 27,893 27,885 18,777 (46,662 ) 27,893 Noncontrolling interests — — 52 — 52 Total equity 27,893 27,885 18,829 (46,662 ) 27,945 Total liabilities and equity $ 39,994 $ 53,140 $ 78,266 $ (84,951 ) $ 86,449 CONDENSED CONSOLIDATING BALANCE SHEET March 31, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) ASSETS Current assets: Cash and cash equivalents $ — $ 6,222 $ 388 $ — $ 6,610 Short-term investments — 2,354 — — 2,354 Accounts and notes receivable, net 99 248 3,711 (347 ) 3,711 Current portion of notes receivable from consolidated affiliates — 424 — (424 ) — Device and accessory inventory — — 1,003 — 1,003 Prepaid expenses and other current assets 5 9 561 — 575 Total current assets 104 9,257 5,663 (771 ) 14,253 Investments in subsidiaries 26,351 18,785 — (45,136 ) — Property, plant and equipment, net — — 19,925 — 19,925 Due from consolidated affiliates 1 — 594 (595 ) — Notes receivable from consolidated affiliates 11,887 23,991 — (35,878 ) — Intangible assets Goodwill — — 6,586 — 6,586 FCC licenses and other — — 41,309 — 41,309 Definite-lived intangible assets, net — — 2,465 — 2,465 Other assets — 185 736 — 921 Total assets $ 38,343 $ 52,218 $ 77,278 $ (82,380 ) $ 85,459 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable $ — $ — $ 3,409 $ — $ 3,409 Accrued expenses and other current liabilities 100 341 3,868 (347 ) 3,962 Current portion of long-term debt, financing and capital lease obligations — 1,832 1,597 — 3,429 Current portion of notes payable to consolidated affiliates — — 424 (424 ) — Total current liabilities 100 2,173 9,298 (771 ) 10,800 Long-term debt, financing and capital lease obligations 11,887 10,381 15,195 — 37,463 Notes payable to consolidated affiliates — 11,887 23,991 (35,878 ) — Deferred tax liabilities — — 7,294 — 7,294 Other liabilities — 831 2,652 — 3,483 Due to consolidated affiliates — 595 — (595 ) — Total liabilities 11,987 25,867 58,430 (37,244 ) 59,040 Commitments and contingencies Total stockholders' equity 26,356 26,351 18,785 (45,136 ) 26,356 Noncontrolling interests — — 63 — 63 Total equity 26,356 26,351 18,848 (45,136 ) 26,419 Total liabilities and equity $ 38,343 $ 52,218 $ 77,278 $ (82,380 ) $ 85,459
Condensed Income Statement	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Net operating revenues: Service revenue $ — $ — $ 5,740 $ — $ 5,740 Equipment sales — — 1,173 — 1,173 Equipment rentals — — 1,212 — 1,212 — — 8,125 — 8,125 Net operating expenses: Cost of services (exclusive of depreciation and amortization included below) — — 1,677 — 1,677 Cost of equipment sales — — 1,270 — 1,270 Cost of equipment rentals (exclusive of depreciation below) — — 124 — 124 Selling, general and administrative — — 1,867 — 1,867 Depreciation - network and other — — 1,023 — 1,023 Depreciation - equipment rentals — — 1,136 — 1,136 Amortization — — 171 — 171 Other, net — — 42 — 42 — — 7,310 — 7,310 Operating income — — 815 — 815 Other income (expense): Interest income 226 547 2 (733 ) 42 Interest expense (226 ) (571 ) (573 ) 733 (637 ) Earnings (losses) of subsidiaries 176 202 — (378 ) — Other (expense) income, net — (2 ) 2 — — 176 176 (569 ) (378 ) (595 ) Income (loss) before income taxes 176 176 246 (378 ) 220 Income tax expense — — (47 ) — (47 ) Net income (loss) 176 176 199 (378 ) 173 Less: Net loss attributable to noncontrolling interests — — 3 — 3 Net income (loss) attributable to Sprint Corporation 176 176 202 (378 ) 176 Other comprehensive (loss) income (4 ) (4 ) (13 ) 17 (4 ) Comprehensive income (loss) $ 172 $ 172 $ 186 $ (361 ) $ 169 CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2017 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Net operating revenues: Service revenue $ — $ — $ 6,071 $ — $ 6,071 Equipment sales — — 1,187 — 1,187 Equipment rentals — — 899 — 899 — — 8,157 — 8,157 Net operating expenses: Cost of services (exclusive of depreciation and amortization included below) — — 1,709 — 1,709 Cost of equipment sales — — 1,545 — 1,545 Cost of equipment rentals (exclusive of depreciation below) — — 112 — 112 Selling, general and administrative — — 1,938 — 1,938 Depreciation - network and other — — 977 — 977 Depreciation - equipment rentals — — 854 — 854 Amortization — — 223 — 223 Other, net — (55 ) (309 ) — (364 ) — (55 ) 7,049 — 6,994 Operating income — 55 1,108 — 1,163 Other income (expense): Interest income 198 45 4 (228 ) 19 Interest expense (198 ) (351 ) (292 ) 228 (613 ) Earnings (losses) of subsidiaries 206 524 — (730 ) — Other expense, net — (67 ) (4 ) — (71 ) 206 151 (292 ) (730 ) (665 ) Income (loss) before income taxes 206 206 816 (730 ) 498 Income tax expense — — (292 ) — (292 ) Net income (loss) 206 206 524 (730 ) 206 Other comprehensive (loss) income (4 ) (4 ) 5 (1 ) (4 ) Comprehensive income (loss) $ 202 $ 202 $ 529 $ (731 ) $ 202
Condensed Cash Flow Statement	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Three Months Ended June 30, 2018 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Cash flows from operating activities: Net cash (used in) provided by operating activities $ — $ (231 ) $ 2,661 $ — $ 2,430 Cash flows from investing activities: Capital expenditures - network and other — — (1,132 ) — (1,132 ) Capital expenditures - leased devices — — (1,817 ) — (1,817 ) Expenditures relating to FCC licenses — — (59 ) — (59 ) Proceeds from sales and maturities of short-term investments — 810 — — 810 Purchases of short-term investments — (2,464 ) — — (2,464 ) Change in amounts due from/due to consolidated affiliates 28 (778 ) — 750 — Proceeds from sales of assets and FCC licenses — — 133 — 133 Proceeds from deferred purchase price from sale of receivables — — 170 — 170 Proceeds from intercompany note advance to consolidated affiliate — 424 — (424 ) — Other, net — — (10 ) — (10 ) Net cash provided by (used in) investing activities 28 (2,008 ) (2,715 ) 326 (4,369 ) Cash flows from financing activities: Proceeds from debt and financings — — 1,370 — 1,370 Repayments of debt, financing and capital lease obligations — (10 ) (1,405 ) — (1,415 ) Debt financing costs (28 ) (9 ) (211 ) — (248 ) Change in amounts due from/due to consolidated affiliates — — 750 (750 ) — Repayments of intercompany note advance from parent — — (424 ) 424 — Other, net — (2 ) — — (2 ) Net cash (used in) provided by financing activities (28 ) (21 ) 80 (326 ) (295 ) Net (decrease) increase in cash, cash equivalents and restricted cash — (2,260 ) 26 — (2,234 ) Cash, cash equivalents and restricted cash, beginning of period — 6,222 437 — 6,659 Cash, cash equivalents and restricted cash, end of period $ — $ 3,962 $ 463 $ — $ 4,425 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Three Months Ended June 30, 2017 Parent/Issuer Subsidiary Guarantor Non-Guarantor Subsidiaries Eliminations Consolidated (in millions) Cash flows from operating activities: Net cash (used in) provided by operating activities $ — $ (394 ) $ 2,318 $ — $ 1,924 Cash flows from investing activities: Capital expenditures - network and other — — (1,151 ) — (1,151 ) Capital expenditures - leased devices — — (1,359 ) — (1,359 ) Expenditures relating to FCC licenses — — (13 ) — (13 ) Proceeds from sales and maturities of short-term investments — 2,594 — — 2,594 Purchases of short-term investments — (1,499 ) — — (1,499 ) Change in amounts due from/due to consolidated affiliates — 588 — (588 ) — Proceeds from sales of assets and FCC licenses — — 101 — 101 Proceeds from deferred purchase price from sale of receivables — — 375 — 375 Other, net — 2 (3 ) — (1 ) Net cash provided by (used in) investing activities — 1,685 (2,050 ) (588 ) (953 ) Cash flows from financing activities: Proceeds from debt and financings — — 902 — 902 Repayments of debt, financing and capital lease obligations — (1,598 ) (523 ) — (2,121 ) Call premiums paid on debt redemptions — (129 ) — — (129 ) Change in amounts due from/due to consolidated affiliates — — (588 ) 588 — Other, net — 9 (24 ) — (15 ) Net cash (used in) provided by financing activities — (1,718 ) (233 ) 588 (1,363 ) Net (decrease) increase in cash, cash equivalents and restricted cash — (427 ) 35 — (392 ) Cash, cash equivalents and restricted cash, beginning of period — 2,461 481 — 2,942 Cash, cash equivalents and restricted cash, end of period $ — $ 2,034 $ 516 $ — $ 2,550

Basis of Presentation Reclassif

Basis of Presentation Reclassification of prior period amounts (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2017	Mar. 31, 2018
Reclassification of prior period amounts [Line Items]
Proceeds from Sale and Collection of Receivables	$ 170	$ 375
Net Cash Provided by (Used in) Financing Activities	(295)	(1,363)
Payments to Acquire Equipment on Lease	1,817	1,359
Net Cash Provided by (Used in) Investing Activities	(4,369)	(953)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 4,425	2,550	$ 2,942	$ 6,659
Accounting Standards Update 2016-15 [Member]
Reclassification of prior period amounts [Line Items]
Net Cash Provided by (Used in) Financing Activities		129
Net Cash Provided by (Used in) Investing Activities		(2)
Adjustments for New Accounting Pronouncement [Member]
Reclassification of prior period amounts [Line Items]
Payments to Acquire Equipment on Lease			900
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents			$ 72
Revenue, Equipment Rentals, Net [Member]
Reclassification of prior period amounts [Line Items]
Prior Period Reclassification Adjustment		899
Cost of Equipment Rentals [Member]
Reclassification of prior period amounts [Line Items]
Prior Period Reclassification Adjustment		112
Depreciation - Equipment Rentals [Member]
Reclassification of prior period amounts [Line Items]
Prior Period Reclassification Adjustment		$ 854

Basis of Presentation Business

Basis of Presentation Business combination (Details)	Apr. 29, 2018shares
Business combination [Line Items]
Exchange Ratio	0.10256
Equivalent shares	9.75000
Fully diluted shares, percentage owned	42.00%
Fully diluted shares, percentage owned by public	0.31
SoftBank [Member]
Business combination [Line Items]
Fully diluted shares, percentage owned	27.00%

New Accounting Pronouncements -

New Accounting Pronouncements - Narrative (Details) $ in Millions	Apr. 01, 2018USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Capitalized Contract Cost, Gross	$ 1,200
Accumulated Deficit [Member] | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption, Before Tax	1,700
Cumulative Effect of New Accounting Principle in Period of Adoption	1,300
Accumulated Deficit [Member] | Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption, Before Tax	12
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 8

New Accounting Pronouncements38

New Accounting Pronouncements - Cumulative Effects of Accounting Standards Updates on Balance Sheet (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Apr. 01, 2018	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Investing Activities	$ (4,369)	$ (953)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	4,425	$ 2,550		$ 6,659	$ 2,942
Accounts and notes receivable, net	3,492		$ 3,808	3,711
Device and accessory inventory	622		979	1,003
Prepaid expenses and other current assets	895		846	575
Costs to acquire a customer contract	1,294		1,219
Other assets	1,023		964	921
Accrued expenses and other current liabilities	3,658		3,927	3,962
Deferred tax liabilities	7,704		7,660	7,294
Other liabilities	3,382		3,451	3,483
(Accumulated deficit) retained earnings	236		60	(1,255)
Accumulated other comprehensive loss	(317)		(321)	(313)
Balances without adoption of Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable, net	3,404
Device and accessory inventory	644
Prepaid expenses and other current assets	557
Costs to acquire a customer contract	0
Other assets	919
Accrued expenses and other current liabilities	3,690
Deferred tax liabilities	7,298
Other liabilities	3,413
(Accumulated deficit) retained earnings	(1,223)
Scenario, Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable, net				3,711
Device and accessory inventory				1,003
Prepaid expenses and other current assets				575
Costs to acquire a customer contract				0
Other assets				921
Accrued expenses and other current liabilities				3,962
Deferred tax liabilities				7,294
Other liabilities				3,483
(Accumulated deficit) retained earnings				(1,255)
Accumulated other comprehensive loss				$ (313)
Accounting Standards Update 2014-09 | Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable, net	88
Device and accessory inventory	(22)
Prepaid expenses and other current assets	338
Costs to acquire a customer contract	1,294
Other assets	104
Accrued expenses and other current liabilities	(32)
Deferred tax liabilities	406
Other liabilities	(31)
(Accumulated deficit) retained earnings	$ 1,459
Accounting Standards Update 2014-09 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable, net			97
Device and accessory inventory			(24)
Prepaid expenses and other current assets			271
Costs to acquire a customer contract			1,219
Other assets			43
Accrued expenses and other current liabilities			(35)
Deferred tax liabilities			366
Other liabilities			(32)
(Accumulated deficit) retained earnings			1,307
Accounting Standards Update, Other | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
(Accumulated deficit) retained earnings			8
Accumulated other comprehensive loss			$ (8)

New Accounting Pronouncements39

New Accounting Pronouncements - Cumulative Effects of Accounting Standards Update on Statement of Comprehensive Income and Balance Sheet (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales Revenue, Services, Net	$ 5,740	$ 6,071
Revenue, equipment sales, net	1,173	1,187
Revenue, equipment rentals, net	1,212	899
Revenues	8,125	8,157
Cost of Services (exclusive of depreciation and amortization included below)	1,677	1,709
Cost of equipment sales	1,270	1,545
Cost of equipment rentals	124	112
Selling, general and administrative	1,867	1,938
Depreciation, network and other	1,023	977
Depreciation, equipment rentals	1,136	854
Amortization	171	223	$ 628
Other, net	42	(364)
Costs and Expenses	7,310	6,994
Operating Income	815	1,163	2,491
Total other expense	(595)	(665)
Loss (income) before income taxes	220	498	$ 652
Income tax benefit	(47)	(292)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	173	206
Net Income (Loss) Attributable to Noncontrolling Interest	3	0
Net Income (Loss) Attributable to Parent	$ 176	$ 206
Basic net (loss) income per common share	$ 0.04	$ 0.05
Diluted net (loss) income per common share	$ 0.04	$ 0.05
Basic weighted average common shares outstanding	4,010	3,993
Diluted weighted average common shares outstanding	4,061	4,076
Change | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales Revenue, Services, Net	$ (143)
Revenue, equipment sales, net	281
Revenue, equipment rentals, net	(16)
Revenues	122
Cost of Services (exclusive of depreciation and amortization included below)	(11)
Cost of equipment sales	22
Cost of equipment rentals	0
Selling, general and administrative	(81)
Depreciation, network and other	0
Depreciation, equipment rentals	0
Amortization	0
Other, net	0
Costs and Expenses	(70)
Operating Income	192
Total other expense	0
Loss (income) before income taxes	192
Income tax benefit	(40)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	152
Net Income (Loss) Attributable to Noncontrolling Interest	0
Net Income (Loss) Attributable to Parent	$ 152
Basic net (loss) income per common share	$ 30,000
Diluted net (loss) income per common share	$ 30,000
Basic weighted average common shares outstanding	0
Diluted weighted average common shares outstanding	0
Balances without adoption of Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales Revenue, Services, Net	$ 5,883
Revenue, equipment sales, net	892
Revenue, equipment rentals, net	1,228
Revenues	8,003
Cost of Services (exclusive of depreciation and amortization included below)	1,688
Cost of equipment sales	1,248
Cost of equipment rentals	124
Selling, general and administrative	1,948
Depreciation, network and other	1,023
Depreciation, equipment rentals	1,136
Amortization	171
Other, net	42
Costs and Expenses	7,380
Operating Income	623
Total other expense	(595)
Loss (income) before income taxes	28
Income tax benefit	(7)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	21
Net Income (Loss) Attributable to Noncontrolling Interest	3
Net Income (Loss) Attributable to Parent	$ 24
Basic net (loss) income per common share	$ 10,000
Diluted net (loss) income per common share	$ 10,000
Basic weighted average common shares outstanding	4,010
Diluted weighted average common shares outstanding	4,061

Additional Financial Informatio

Additional Financial Information (Details) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Mar. 31, 2017
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalents	$ 4,378	$ 6,610	$ 2,550	$ 2,942
Restricted Cash, Current	47	49
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 4,425	$ 6,659	$ 2,550	$ 2,942

Financial Instruments (Narrativ

Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term Investments	$ 4,008	$ 2,354
Certificates of Deposit, at Carrying Value		1,600
Document Period End Date	Jun. 30, 2018
Marketable Securities, Equity Securities	$ 41	57
Commercial Paper, at Carrying Value		$ 765

Installment Receivables - Narra

Installment Receivables - Narrative (Details)	3 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Payment term (up to)	24 months

Financial Instruments (Estimate

Financial Instruments (Estimated Fair Value of Debt, Financing and Capital Lease Obligations) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Time Deposits	$ 2,300
Current and long-term debt, financing and capital lease obligations, Carrying amount	40,784	$ 40,820
Liabilities, Fair Value Disclosure, Nonrecurring	41,405	41,286
Commercial Paper	1,700
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value Disclosure, Nonrecurring	37,477	37,549
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, Fair Value Disclosure, Nonrecurring	$ 3,928	$ 3,737

Installment Receivables - Summa

Installment Receivables - Summary of Installment Receivables (Details) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Installment receivables, gross	$ 1,232	$ 1,472
Deferred interest	50	106
Installment receivables, net of deferred interest	1,182	1,366
Allowance for credit losses	199	217
Installment receivables, net	983	1,149
Accounts and notes receivable, net
Financing Receivable, Allowance for Credit Losses [Line Items]
Installment receivables, net	841	995
Other assets
Financing Receivable, Allowance for Credit Losses [Line Items]
Installment receivables, net	$ 142	$ 154

Installment Receivables - Balan

Installment Receivables - Balance and Aging of Financing Receivables by Credit Category (Details) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	$ 1,232	$ 1,472
Prime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	859	1,037
Subprime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	373	435
Unbilled
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	1,119	1,342
Unbilled | Prime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	782	951
Unbilled | Subprime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	337	391
Billed - current | Billed
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	86	98
Billed - current | Billed | Prime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	62	69
Billed - current | Billed | Subprime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	24	29
Billed - past due | Billed
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	27	32
Billed - past due | Billed | Prime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	15	17
Billed - past due | Billed | Subprime
Financing Receivable, Recorded Investment [Line Items]
Installment receivables, gross	$ 12	$ 15

Installment Receivables - Sched

Installment Receivables - Schedule of Activity in the Deferred Interest Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2017
Financing Receivable
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Deferred interest and allowance for credit losses, beginning of period	$ 323	$ 506
Bad debt expense	15	142
Write-offs, net of recoveries	(33)	(224)
Change in deferred interest on short- and long-term installment receivables	(6)	$ (101)
Deferred interest and allowance for credit losses, end of period	249
Balances without adoption of Topic 606
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Change in deferred interest on short- and long-term installment receivables	$ (50)

Intangible Assets (Indefinite-L

Intangible Assets (Indefinite-Lived Intangible Assets) (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018USD ($)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Period Start	$ 41,309
Indefinite-lived Intangible Assets, Period End	41,368
Goodwill, beginning balance	6,586
Goodwill, Period Increase (Decrease)	0
Goodwill, ending balance	6,586
Total indefinite-lived intangible assets including FCC licenses, Trademarks, Goodwill, beginning balance	47,895
Indefinite lived intangible assets period increase decrease	59
Total indefinite-lived intangible assets including FCC licenses, Trademarks, Goodwill, ending balance	47,954
FCC Licenses [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Period Start	37,274
Indefinite-lived Intangible Assets, Period Increase (Decrease)	59
Indefinite-lived Intangible Assets, Period End	37,333
Trademarks [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Period Start	4,035
Indefinite-lived Intangible Assets, Period Increase (Decrease)	0
Indefinite-lived Intangible Assets, Period End	$ 4,035

Property, Plant and Equipment48

Property, Plant and Equipment (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Accrued capital expenditures	$ 987			$ 387
Depreciation - network and other			$ 5,693
Loss on Disposition of Property Plant Equipment	124	$ 293
Gain (Loss) on Disposition of Property Plant Equipment	$ (175)
Document Period End Date	Jun. 30, 2018
Leased devices [Member]
Property, Plant and Equipment [Line Items]
Accrued capital expenditures	$ 221			$ 210
Increase (Decrease) in Inventories	200	100
Network equipment, site costs and related software [Member]
Property, Plant and Equipment [Line Items]
Loss on Disposition of Property Plant Equipment		(175)
Gain (Loss) on Disposition of Property Plant Equipment	181
Other Property [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment	(6)	(6)
Other, Net [Member]
Property, Plant and Equipment [Line Items]
Loss on Disposition of Property Plant Equipment	(124)	(287)
Write-off leased devices [Member]
Property, Plant and Equipment [Line Items]
Loss on Disposition of Property Plant Equipment	$ (124)	$ (112)

Intangible Assets (Intangible A

Intangible Assets (Intangible Assets Subject to Amortization) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 8,404	$ 8,402
Accumulated Amortization	(6,159)	(5,937)
Net Carrying Value	2,245	2,465
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	6,562	6,562
Accumulated Amortization	(5,623)	(5,462)
Net Carrying Value	939	1,100
Favorable spectrum leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	856	856
Accumulated Amortization	(216)	(172)
Net Carrying Value	640	684
Favorable tower leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	335	335
Accumulated Amortization	(188)	(179)
Net Carrying Value	147	156
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	520	520
Accumulated Amortization	(78)	(74)
Net Carrying Value	442	446
Other Finite Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	131	129
Accumulated Amortization	(54)	(50)
Net Carrying Value	77	79
Finite Lived Intangible Assets Excluding Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,842	1,840
Accumulated Amortization	(536)	(475)
Net Carrying Value	$ 1,306	$ 1,365
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Minimum [Member] | Favorable tower leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life
Minimum [Member] | Other Finite Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years
Maximum [Member] | Favorable spectrum leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	23 years
Maximum [Member] | Favorable tower leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum [Member] | Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	34 years
Maximum [Member] | Other Finite Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years

Property, Plant and Equipment50

Property, Plant and Equipment (Components of Property Plant and Equipment) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Document Period End Date	Jun. 30, 2018
Less accumulated depreciation	$ (18,418)	$ (17,423)
Property, plant and equipment, net	20,538	19,925
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	254	254
Network equipment, site costs and related software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	23,144	22,930
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	817	813
Non-network internal use software, office equipment, leased devices and other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	11,740	11,149
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Construction in progress	$ 3,001	$ 2,202

Intangible Assets (Narrative) (

Intangible Assets (Narrative) (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Goodwill, Period Increase (Decrease)	$ 0
Other, Net [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Gain (Loss) on Disposition of Intangible Assets	$ 479

Property, Plant and Equipment52

Property, Plant and Equipment (Components of Property Plant and Equipment, Specifically Leased Devices) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Document Period End Date	Jun. 30, 2018
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ (18,418)	$ (17,423)
Property, plant and equipment, net	20,538	19,925
Leased devices [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	10,145	9,592
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(3,932)	(3,580)
Property, plant and equipment, net	$ 6,213	$ 6,012

Accounts Payable (Details)

Accounts Payable (Details) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018
Accounts Payable [Abstract]
Checks Issued In Excess Of Associated Bank Balances But Not Yet Presented For Collection	$ 80	$ 66

Long-Term Debt, Financing and54

Long-Term Debt, Financing and Capital Lease Obligations (Schedule of Long-term Debt Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018	Feb. 20, 2018	Feb. 02, 2017	Oct. 31, 2016
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 6,000
Debt Instrument, Unamortized Premium (Discount), Net	$ (338)	$ (111)
Current and Long-term Debt, Financing and Capital Lease Obligations	40,617	40,892
Long Term Debt Financing And Capital Lease Obligations, Current portion	(4,846)	(3,429)
Long-term debt, financing and capital lease obligations	35,771	37,463
Senior Notes [Member] | Sprint Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			7.625%
Long-term Debt, Gross	12,000	12,000
Senior Notes [Member] | Sprint Nextel Corporation [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	4,980	4,980
Senior Notes [Member] | Sprint Capital Corporation [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	6,204	6,204
Guaranteed notes [Member] | Sprint Nextel Corporation [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	2,753	2,753
Secured Debt [Member] | Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					3.36%
Long-term Debt, Gross	6,781	7,000
Financing Obligation [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 2,697	2,411
Revolving Credit Facility [Member] | Secured Revolving Bank Credit Facility expires in Feb 2021[Member] [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	4.63%
Line of Credit Facility, Amount Outstanding	$ 0	0
Secured term loan [Member] | Sprint Nextel Corporation [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	4.63%
Long-term Debt, Gross				$ 4,000
Line of Credit Facility, Amount Outstanding	$ 3,950	3,960
Secured term loan [Member] | PRWireless HoldCo, LLC Secured Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	7.58%
Line of Credit Facility, Amount Outstanding	$ 182	182
Line of Credit [Member] | Export Development Canada Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding		300
Line of Credit [Member] | Secured Equipment Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	462	527
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	327	$ 686
Financing Obligations, Capital Lease Obligations and Other [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 646
Minimum [Member] | Senior Notes [Member] | Sprint Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.13%
Minimum [Member] | Senior Notes [Member] | Sprint Nextel Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Minimum [Member] | Senior Notes [Member] | Sprint Capital Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.88%
Minimum [Member] | Guaranteed notes [Member] | Sprint Nextel Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.00%
Minimum [Member] | Secured Debt [Member] | Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.36%
Minimum [Member] | Financing Obligation [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.83%
Minimum [Member] | Line of Credit [Member] | Secured Equipment Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	3.75%
Minimum [Member] | Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.35%
Maximum [Member] | Senior Notes [Member] | Sprint Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.88%
Maximum [Member] | Senior Notes [Member] | Sprint Nextel Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	11.50%
Maximum [Member] | Senior Notes [Member] | Sprint Capital Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.75%
Maximum [Member] | Guaranteed notes [Member] | Sprint Nextel Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	9.00%
Maximum [Member] | Secured Debt [Member] | Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.15%
Maximum [Member] | Financing Obligation [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.54%
Maximum [Member] | Line of Credit [Member] | Export Development Canada Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	4.59%
Maximum [Member] | Line of Credit [Member] | Secured Equipment Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	4.45%
Maximum [Member] | Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	12.00%

Long-Term Debt, Financing and55

Long-Term Debt, Financing and Capital Lease Obligations (Narrative) (Details)

1 Months Ended

3 Months Ended

12 Months Ended

Aug. 07, 2018USD ($)

Feb. 28, 2017

Oct. 31, 2016USD ($)

May 31, 2016USD ($)

Jun. 30, 2018USD ($)siteyears

Jun. 30, 2017USD ($)

Mar. 31, 2017

Dec. 31, 2019

Jul. 01, 2018USD ($)

Jun. 01, 2018

May 31, 2018

Mar. 31, 2018USD ($)site

Feb. 20, 2018

Sep. 30, 2017USD ($)

Feb. 02, 2017USD ($)

Nov. 30, 2015USD ($)

Dec. 31, 2014USD ($)tranche

Schedule of Capitalization, Long-term Debt [Line Items]

Maximum Funding Limit

$ 4,500,000,000

Receivables Facility, maximum amount available based on receivables sold to investors, percent

50.00%

Receivables Facility, Amount Outstanding

$ 2,700,000,000

Receivables Facility, Amount of Funds Available

942,000,000

Maximum Funding Limit, increase

200,000,000

Receivables Facility, Amount Drawn on Facility

1,400,000,000

Sale Leaseback Transaction, Cumulative Lease Payments

1,100,000,000

Long-term debt issued by 100% owned subsidiary and is fully and unconditionally guaranteed by the parent

21,800,000,000

Interest Costs Capitalized

$ 15,000,000

Cash interest payments

600,000,000

700,000,000

Redeemable notes

32,500,000,000

Principal amount of notes with the right to require the Company to repurchase on change of control

26,300,000,000

Call premiums paid on debt redemptions

0

129,000,000

Gain (Loss) on Extinguishment of Debt

$ 0

$ (66,000,000)

Long-term Debt, Gross

$ 6,000,000,000

Long-term Debt, Percentage Bearing Variable Interest, Amount

250

Number of cell sites leased back | site

2,000

3,000

Term in years for cell sites leased back renewal options | years

20

Payments for (Proceeds from) Businesses and Interest in Affiliates

$ 181,000,000

Ratio Of Total Indebtedness To Adjusted EBITDA

2.5

Financing Receivable, Net

$ 983,000,000

$ 1,149,000,000

Installment Lease Receivables, Net Book Value

6,200,000,000

Capital Lease Obligations [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Long-term Debt, Gross

327,000,000

686,000,000

Tower financing [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Sale Leaseback Transaction, Net Book Value

$ 139,000,000

Subsequent Event [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Receivables Facility, Amount of Funds Available

$ 1,500,000,000

Receivables Facility, repayments

$ 1,200,000,000

Minimum [Member] | Capital Lease Obligations [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

2.35%

Maximum [Member] | Capital Lease Obligations [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

12.00%

Spectrum Assets [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Concentration Risk, Percentage

14.00%

Shentel [Member] | Capital Lease Obligations [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Long-term Debt, Gross

$ 132,000,000

Delcredere / Ducroire (D/D) Secured Equipment Credit Facility [Member] | Line of Credit [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Aggregate principal amount line of credit

$ 150,000,000

$ 250,000,000

Repayments of Lines of Credit

20,000,000

Line of Credit Facility, Amount Outstanding

139,000,000

K-sure Secured Equipment Credit Facility [Member] | Line of Credit [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Aggregate principal amount line of credit

$ 750,000,000

Repayments of Lines of Credit

32,000,000

Number of tranches | tranche

3

Line of Credit Facility, Amount Outstanding

162,000,000

Finnvera Secured Equipment Credit Facility [Member] | Line of Credit [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Aggregate principal amount line of credit

$ 800,000,000

Repayments of Lines of Credit

13,000,000

Line of Credit Facility, Amount Outstanding

161,000,000

Export Development Canada Agreement [Member] | Line of Credit [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Line of Credit Facility, Amount Outstanding

300,000,000

Export Development Canada Agreement [Member] | Tranche three and four [Member] | Line of Credit [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Line of Credit Facility, Amount Outstanding

300,000,000

Secured Revolving Bank Credit Facility expires in Feb 2021[Member] [Member] | Revolving Credit Facility [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Aggregate principal amount line of credit

$ 2,000,000,000

Line of Credit Facility, Remaining Borrowing Capacity

1,900,000,000

Line of Credit Facility, Amount Outstanding

0

0

Ratio Of Total Indebtedness To Adjusted EBITDA

4.8

Ratio Of Total Indebtedness To Adjusted EBITDA, Minimum

3.5

Secured Revolving Bank Credit Facility expires in Feb 2021[Member] [Member] | Letter of Credit [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Letters of Credit Outstanding, Amount

144,000,000

Sprint Nextel Corporation [Member] | Secured term loan [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Long-term Debt, Gross

$ 4,000,000,000

Line of Credit Facility, Amount Outstanding

3,950,000,000

3,960,000,000

Debt Instrument, Term

7 years

Sprint Nextel Corporation [Member] | Senior Notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Long-term Debt, Gross

4,980,000,000

4,980,000,000

Sprint Nextel Corporation [Member] | Guaranteed notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Long-term Debt, Gross

$ 2,753,000,000

2,753,000,000

Sprint Nextel Corporation [Member] | Minimum [Member] | Senior Notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

6.00%

Sprint Nextel Corporation [Member] | Minimum [Member] | Guaranteed notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

7.00%

Sprint Nextel Corporation [Member] | Maximum [Member] | Senior Notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

11.50%

Sprint Nextel Corporation [Member] | Maximum [Member] | Guaranteed notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

9.00%

PRWireless HoldCo, LLC Secured Term Loan [Member] | Secured term loan [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Line of Credit Facility, Remaining Borrowing Capacity

$ 20,000,000

Line of Credit Facility, Amount Outstanding

182,000,000

182,000,000

Spectrum Financing [Member] | Secured Debt [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Maximum Borrowing Capacity

$ 7,000,000,000

Debt Instrument, Additional Borrowings Available

3,900,000,000

Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC [Member] | Secured Debt [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

3.36%

Operating Leases, Future Minimum Payments Due

$ 3,500,000,000

Repayments of Debt

219,000,000

Long-term Debt, Gross

6,781,000,000

7,000,000,000

Debt instrument face amount

$ 3,500,000,000

Debt Instrument, Term

5 years

Secured Debt, Current

$ 875,000,000

Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC [Member] | Minimum [Member] | Secured Debt [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

3.36%

Sprint Spectrum Co LLC, Sprint Spectrum Co II LLC, Sprint Spectrum Co III LLC [Member] | Maximum [Member] | Secured Debt [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

5.15%

Sprint Financing maturing 2021 [Member] | Secured Debt [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Long-term Debt, Gross

$ 2,900,000,000

Sprint Corporation [Member] | Senior Notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

7.625%

Long-term Debt, Gross

$ 12,000,000,000

$ 12,000,000,000

Sprint Corporation [Member] | Minimum [Member] | Senior Notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

7.13%

Sprint Corporation [Member] | Maximum [Member] | Senior Notes [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

7.88%

Spectrum Financing maturing 2025 [Member] | Secured Debt [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

4.738%

Debt Instrument, Additional Borrowings Available

$ 2,100,000,000

Spectrum Financing maturing 2028 [Member] | Secured Debt [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

5.152%

Debt Instrument, Additional Borrowings Available

$ 1,800,000,000

Wireless Service [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Purchase Commitment Allocation

22.00%

26.00%

26.00%

Installment Receivables [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Purchase Commitment Allocation

78.00%

18.00%

28.00%

Future lease receivables [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Purchase Commitment Allocation

56.00%

46.00%

Accounts and notes receivable, net

Schedule of Capitalization, Long-term Debt [Line Items]

Financing Receivable, Net

$ 841,000,000

995,000,000

Accounts and notes receivable, net | Wireless Services and Installment Receivables [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Financing Receivable, Net

2,600,000,000

Other assets

Schedule of Capitalization, Long-term Debt [Line Items]

Financing Receivable, Net

142,000,000

154,000,000

Other assets | Special purpose entity [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Financing Receivable, Net

132,000,000

Interest Rate Swap [Member] | Sprint Nextel Corporation [Member] | Secured term loan [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Derivative, Notional Amount

$ 2,000,000,000

Derivative Liability, Fair Value, Gross Liability

$ 55,000,000

$ 41,000,000

Derivative, Term of Contract

5 years

Scenario, Forecast [Member] | Secured Revolving Bank Credit Facility expires in Feb 2021[Member] [Member] | Revolving Credit Facility [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Ratio Of Total Indebtedness To Adjusted EBITDA

3.75

London Interbank Offered Rate (LIBOR) [Member] | PRWireless HoldCo, LLC Secured Term Loan [Member] | Secured term loan [Member]

Schedule of Capitalization, Long-term Debt [Line Items]

Debt Instrument, Basis Spread on Variable Rate

5.25%

Revenues from Contracts with 56

Revenues from Contracts with Customers - Narrative (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018USD ($)segments	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)
Disaggregation of Revenue [Line Items]
Number of Reportable Segments | segments	2
Remaining performance obligation	$ 9,643
Total revenue	8,125
Equipment sales
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,173
Minimum [Member] | Leasing Contracts [Member]
Disaggregation of Revenue [Line Items]
Performance period	18 months
Minimum [Member] | Handsets [Member]
Disaggregation of Revenue [Line Items]
Performance period	24 months
Minimum [Member] | Accessories [Member]
Disaggregation of Revenue [Line Items]
Performance period	12 months
Minimum [Member] | Wireline [Member]
Disaggregation of Revenue [Line Items]
Performance period	24 months
Maximum [Member] | Wireless Service [Member]
Disaggregation of Revenue [Line Items]
Performance period	24 months
Maximum [Member] | Leasing Contracts [Member]
Disaggregation of Revenue [Line Items]
Performance period	30 months
Maximum [Member] | Handsets [Member]
Disaggregation of Revenue [Line Items]
Performance period	30 months
Maximum [Member] | Accessories [Member]
Disaggregation of Revenue [Line Items]
Performance period	18 months
Maximum [Member] | Wireline [Member]
Disaggregation of Revenue [Line Items]
Performance period	36 months
Scenario, Forecast [Member]
Disaggregation of Revenue [Line Items]
Remaining performance obligation		$ 872	$ 2,700
Sales Channel, Through Intermediary [Member] | Equipment sales
Disaggregation of Revenue [Line Items]
Total revenue	$ 750

Revenues from Contracts with 57

Revenues from Contracts with Customers - Schedule of Disaggregated Reported Revenue (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018USD ($)
Disaggregation of Revenue [Line Items]
Total revenue	$ 8,125
Total service revenue
Disaggregation of Revenue [Line Items]
Total revenue	5,740
Postpaid
Disaggregation of Revenue [Line Items]
Total revenue	4,188
Prepaid
Disaggregation of Revenue [Line Items]
Total revenue	982
Wireless wholesale and affiliate
Disaggregation of Revenue [Line Items]
Total revenue	294
Wireline
Disaggregation of Revenue [Line Items]
Total revenue	276
Equipment sales
Disaggregation of Revenue [Line Items]
Total revenue	1,173
Equipment rentals
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,212

Revenues from Contracts with 58

Revenues from Contracts with Customers Revenues from Contracts with Customers - Schedule of Contract Assets and Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Apr. 01, 2018	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset, Net	$ 550		$ 432
Billed trade receivables	2,470		2,559
Unbilled trade receivables	1,040		1,250
Contract with Customer, Liability	1,045		$ 1,104
Sales commissions, opening balance	1,219
Sales commissions, additions	266
Capitalized Contract Cost, Amortization	(191)
Costs to acquire a customer contract	1,294	$ 1,219
Revenue recognized from contract liability	$ 867

Revenues from Contracts with 59

Revenues from Contracts with Customers - Schedule of Remaining Performance Obligations (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 9,643
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 7,281
Performance period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 2,358
Performance period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 4
Performance period

Severance and Exit Costs (Detai

Severance and Exit Costs (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 2
Restructuring Charges	8
Wireless [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	2
Access [Member] | Severance and exit costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	6
Access [Member] | Severance and exit costs [Member] | Wireless [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1
Access [Member] | Severance and exit costs [Member] | Wireline [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 5

Severance and Exit Costs (Sched

Severance and Exit Costs (Schedule of Severance and Exit Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Document Period End Date	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Restructuring Reserve	$ 204	$ 248
Supplemental Unemployment Benefits, Severance Benefits	34	64
Restructuring Charges	8
Severance Costs	2
Payments for Postemployment Benefits	(32)
Restructuring Reserve, Settled with Cash	(52)
Lease [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	148	165
Restructuring reserved settled with cash and other adjustments	17
Access [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	22	$ 19
Restructuring reserved settled with cash and other adjustments	3
Wireless [Member]
Restructuring Reserve [Roll Forward]
Severance Costs	2
Wireless [Member] | Lease [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	0
Severance and exit costs [Member] | Access [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	6
Severance and exit costs [Member] | Wireless [Member] | Access [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	1
Severance and exit costs [Member] | Wireline [Member] | Access [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	$ 5

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	$ (6)	$ 33
Income tax benefit	$ 47	$ 292
Effective Income Tax Rate Reconciliation, Percent	21.40%	58.60%
Cumulative effect of changes in corporate state income tax laws that were recognized within State income taxes, net of federal income tax effect	$ (24)	$ (3)
Tax benefit from organizational restructuring	13	0
Increase deferred tax liability for business activity changes	0	65
Unrecognized tax benefit	226		$ 239
Income Taxes Paid, Net	$ 39	$ 32

Income Taxes (Effective Income

Income Taxes (Effective Income Tax Rate) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income tax benefit at the federal statutory rate	$ (46)	$ (174)
State income taxes, net of federal income tax effect	(15)	(22)
Cumulative effect of changes in corporate state income tax laws that were recognized within State income taxes, net of federal income tax effect	24	3
Increase deferred tax liability for business activity changes	0	(65)
Credit for increasing research activities	0	4
Tax benefit from organizational restructuring	13	0
Change in federal and state valuation allowance	6	(33)
Other, net	(3)	(5)
Income tax expense	$ (47)	$ (292)
Effective income tax rate	(21.40%)	(58.60%)

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) $ in Millions	Apr. 19, 2012USD ($)	Jun. 30, 2018USD ($)claim	Mar. 31, 2018USD ($)
Commitments and Contingencies [Line Items]
Minimum spectrum reconfiguration obligations		$ 2,800
Document Period End Date		Jun. 30, 2018
Total Payments directly attributable to performance under Report and Order		$ 3,600
Payments directly attributable to performance under report and order, net change related to FCC licenses		21
Unsecured Revolving Credit Facility expires in 2018 [Member] | Letter Of Credit Required By The FCCs Report And Order [Member]
Commitments and Contingencies [Line Items]
Initial Letter of Credit Requirement			$ 2,500
Letters of Credit Outstanding, Amount		$ 115
Stockholder Derivative Suit 2009 [Member]
Commitments and Contingencies [Line Items]
Loss Contingency, Pending Claims, Number | claim		5
New York sales taxes on receipts from sale of wireless services [Member]
Commitments and Contingencies [Line Items]
Sales receipts alleged to not be reported, amount	$ 100
Derivative Shareholder Suits [Member]
Commitments and Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | claim		8
Louisiana Municipal Police Employees Retirement System [Member]
Commitments and Contingencies [Line Items]
Loss Contingency, Claims Dismissed, Number | claim		1
Johnson County Kansas [Member]
Commitments and Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | claim		2
Loss Contingency, Claims Dismissed, Number | claim		1
Federal Court of Kansas [Member]
Commitments and Contingencies [Line Items]
Loss Contingency, Pending Claims, Number | claim		5
State and Local Jurisdiction [Member]
Commitments and Contingencies [Line Items]
Loss Contingency Accrual, Provision		$ 114

Per Share Data (Narrative) (Det

Per Share Data (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Jul. 10, 2018	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Class of Warrant or Right, Unissued			24
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			20
Options and RSUs [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of shares that had no effect on computation of dilutive weighted average number of shares outstanding			59
Options and Restricted Stock Units [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of shares that had no effect on computation of dilutive weighted average number of shares outstanding		47
Warrant [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of shares that had no effect on computation of dilutive weighted average number of shares outstanding		4
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 5.25
Warrant [Member] | Subsequent Event [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	55
Proceeds from Warrant Exercises	$ 287
Warrant [Member] | SoftBank [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Number of shares that had no effect on computation of dilutive weighted average number of shares outstanding		2
Employee Stock Option [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		9	4

Segments (Segment Financial Inf

Segments (Segment Financial Information) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018USD ($)segments	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Depreciation, equipment rentals	$ (1,136)	$ (854)
Document Period End Date	Jun. 30, 2018
Number of Reportable Segments | segments	2
Segment Reporting Information, Total Net Operating Revenues	$ 8,125	8,157	$ 24,356
Revenues	8,125	8,157
Segment Operating Expenses	(4,845)	(5,304)	16,055
Asset Impairment Charges			0
Segment Reporting Information Operating Income or Loss	3,280	2,853	8,301
Depreciation, network and other	1,023	977
Amortization	(171)	(223)	(628)
Merger costs	(93)
Other Operating Expenses Net	(42)	364	611
Operating Income	815	1,163	2,491
Interest Expense	(637)	(613)	(1,789)
Other income, net	42	(52)	(50)
Loss (income) before income taxes	220	498	652
Payments to Acquire Property, Plant and Equipment Inclusive of Equipment on Lease	2,949	2,510
Loss on disposition of property, plant and equipment	175
Loss on Disposition of Property Plant Equipment	124	293
Wireless [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues		7,810
Revenues	7,845	7,810
Segment Operating Expenses		(4,944)
Segment Reporting Information Operating Income or Loss		2,866
Payments to Acquire Property, Plant and Equipment Inclusive of Equipment on Lease	2,836	2,324
Gain (Loss) on Contract Termination	5		(34)
Wireline [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	276	343	963
Revenues	338	433
Segment Operating Expenses	(380)	(444)	(1,305)
Segment Reporting Information Operating Income or Loss	(42)	(11)	(70)
Payments to Acquire Property, Plant and Equipment Inclusive of Equipment on Lease	51	62
Corporate, Other And Eliminations [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	4	4	13
Revenues	(58)	(86)
Segment Operating Expenses	62	84	241
Segment Reporting Information Operating Income or Loss	4	(2)	(18)
Payments to Acquire Property, Plant and Equipment Inclusive of Equipment on Lease	62	124
Lease and severance [Member]
Segment Reporting Information [Line Items]
Severance and exit costs	(8)
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0
Intersegment Eliminations [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Revenues		0
Intersegment Eliminations [Member] | Wireline [Member]
Segment Reporting Information [Line Items]
Revenues	62	90	272
Intersegment Eliminations [Member] | Corporate, Other And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(62)	(90)	(272)
Other, Net [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Intangible Assets	479
Other Operating Expenses Net			(100)
Loss on Disposition of Property Plant Equipment	(124)	(287)
Write-off leased devices [Member]
Segment Reporting Information [Line Items]
Loss on Disposition of Property Plant Equipment	(124)	(112)
State and Local Jurisdiction [Member]
Segment Reporting Information [Line Items]
Loss Contingency Accrual, Provision	(114)
State and Local Jurisdiction [Member] | Other, Net [Member]
Segment Reporting Information [Line Items]
Loss Contingency, Loss in Period		55
Wireless Including Hurricane and Other [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues			23,347
Segment Operating Expenses			15,109
Segment Reporting Information Operating Income or Loss			8,238
Wireless Including Hurricane and Other [Member] | Intersegment Eliminations [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Revenues			0
Wireless Hurricane and Other [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues			33
Segment Operating Expenses			118
Segment Reporting Information Operating Income or Loss			151
Wireless Hurricane and Other [Member] | Intersegment Eliminations [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Revenues			0
Wireless Excluding Hurricane and Other [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	7,845		23,380
Segment Operating Expenses	(4,527)		(14,991)
Segment Reporting Information Operating Income or Loss	3,318		8,389
Wireless Excluding Hurricane and Other [Member] | Intersegment Eliminations [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Revenues	0		$ 0
Services [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	5,422	5,788
Services [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Revenues	5,170	5,465
Services [Member] | Wireline [Member]
Segment Reporting Information [Line Items]
Revenues	314	413
Services [Member] | Corporate, Other And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(62)	(90)
Wireless Equipment Sales [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	1,173	1,187
Wireless Equipment Sales [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Revenues	1,173	1,187
Wireless Equipment Sales [Member] | Wireline [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Wireless Equipment Sales [Member] | Corporate, Other And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Wireless Equipment Rentals [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	1,212	899
Wireless Equipment Rentals [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Revenues	1,212	899
Wireless Equipment Rentals [Member] | Wireline [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Wireless Equipment Rentals [Member] | Corporate, Other And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	$ 0	$ 0

Segments (Operating Revenues by

Segments (Operating Revenues by Service and Products) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Other Operating Expenses Net	$ 42	$ (364)	$ (611)
Gain (Loss) on Disposition of Property Plant Equipment	(175)
Restructuring Charges	8
Net operating revenues	8,125	8,157
Segment Reporting Information, Total Net Operating Revenues	8,125	8,157	24,356
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	(124)	(293)
Other Products or Services [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	318	283
Services [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	5,422	5,788
Wireless Equipment Sales [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	1,173	1,187
Wireless Equipment Rentals [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Total Net Operating Revenues	1,212	899
Wireless [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Contract Termination	(5)		34
Net operating revenues	7,845	7,810
Segment Reporting Information, Total Net Operating Revenues		7,810
Wireless [Member] | Wireless Service [Member]
Segment Reporting Information [Line Items]
Net operating revenues		82
Wireless [Member] | Other Products or Services [Member]
Segment Reporting Information [Line Items]
Net operating revenues	290	259
Wireless [Member] | Services [Member]
Segment Reporting Information [Line Items]
Net operating revenues	5,170	5,465
Wireless [Member] | Wireless Equipment Sales [Member]
Segment Reporting Information [Line Items]
Net operating revenues	1,173	1,187
Wireless [Member] | Wireless Equipment Rentals [Member]
Segment Reporting Information [Line Items]
Net operating revenues	1,212	899
Wireline [Member]
Segment Reporting Information [Line Items]
Net operating revenues	338	433
Segment Reporting Information, Total Net Operating Revenues	276	343	963
Wireline [Member] | Other Products or Services [Member]
Segment Reporting Information [Line Items]
Net operating revenues	24	20
Wireline [Member] | Services [Member]
Segment Reporting Information [Line Items]
Net operating revenues	314	413
Wireline [Member] | Wireless Equipment Sales [Member]
Segment Reporting Information [Line Items]
Net operating revenues	0	0
Wireline [Member] | Wireless Equipment Rentals [Member]
Segment Reporting Information [Line Items]
Net operating revenues	0	0
Corporate, Other And Eliminations [Member]
Segment Reporting Information [Line Items]
Net operating revenues	(58)	(86)
Segment Reporting Information, Total Net Operating Revenues	4	4	13
Corporate, Other And Eliminations [Member] | Other Products or Services [Member]
Segment Reporting Information [Line Items]
Net operating revenues	4	4
Corporate, Other And Eliminations [Member] | Services [Member]
Segment Reporting Information [Line Items]
Net operating revenues	(62)	(90)
Corporate, Other And Eliminations [Member] | Wireless Equipment Sales [Member]
Segment Reporting Information [Line Items]
Net operating revenues	0	0
Corporate, Other And Eliminations [Member] | Wireless Equipment Rentals [Member]
Segment Reporting Information [Line Items]
Net operating revenues	0	0
Lease and severance [Member]
Segment Reporting Information [Line Items]
Severance and exit costs	8
Lease [Member] | Wireless [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0
Network equipment, site costs and related software [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment	181
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		175
Other Property [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment	(6)	(6)
Write-off leased devices [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	124	112
Other, Net [Member]
Segment Reporting Information [Line Items]
Other Operating Expenses Net			$ 100
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	124	287
Gain (Loss) on Disposition of Intangible Assets	$ 479
State and Local Jurisdiction [Member] | Other, Net [Member]
Segment Reporting Information [Line Items]
Loss Contingency, Loss in Period		$ (55)

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Oct. 31, 2014
Related Party Transaction [Line Items]
Document Period End Date	Jun. 30, 2018
Cost of equipment sales	$ 1,270	$ 1,545
Line of Credit [Member] | Brightstar [Member]
Related Party Transaction [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 700
Brightstar [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties	413	350
Accounts Receivable, Related Parties	125		$ 188
Related Party Transaction, Expenses from Transactions with Related Party	17	23
Accounts Payable, Related Parties, Current	79		$ 88
Cost of equipment sales	$ 432	$ 356

Related Party Transactions (Bri

Related Party Transactions (Brightstar) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Related Party Transaction [Line Items]
Document Period End Date	Jun. 30, 2018
Cost of equipment sales	$ 1,270	$ 1,545
Brightstar [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	17	23
Accounts Receivable, Related Parties	125		$ 188
Accounts Payable, Related Parties, Current	79		$ 88
Revenue from Related Parties	413	350
Related Party Transaction, Other Revenues from Transactions with Related Party	49
Cost of equipment sales	$ 432	$ 356

Guarantor Financial Informati70

Guarantor Financial Information (Details) $ in Millions	Jun. 30, 2018USD ($)	Feb. 20, 2018USD ($)	Dec. 31, 2016USD ($)	Nov. 30, 2015USD ($)	Feb. 24, 2015USD ($)	Dec. 12, 2013USD ($)	Sep. 11, 2013USD ($)
Condensed Financial Statements, Captions [Line Items]
Ratio Of Total Indebtedness To Adjusted EBITDA	2.5
Maximum Funding Limit				$ 4,500
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Other Additional Capital	$ 1,500		$ 42
Notes Payable, Related Parties	$ 24,000
Sprint Communications Inc. Guaranteed Notes due 2021 [Member] | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Debt instrument face amount							$ 2,250
Debt Instrument, Interest Rate, Stated Percentage							7.25%
Sprint Corporation 7.875% [Member] | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Debt instrument face amount							$ 4,250
Debt Instrument, Interest Rate, Stated Percentage							7.875%
Sprint Corporation 7.125% [Member] [Member] | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Debt instrument face amount						$ 2,500
Debt Instrument, Interest Rate, Stated Percentage						7.125%
Sprint Corporation 7.625% [Member] | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Debt instrument face amount		$ 1,500			$ 1,500
Debt Instrument, Interest Rate, Stated Percentage					7.625%
Sprint Corporation [Member] | Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.625%

Guarantor Financial Informati71

Guarantor Financial Information (CONDENSED CONSOLIDATING BALANCE SHEET) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Apr. 01, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2016
Condensed Balance Sheet Statements, Captions [Line Items]
Depreciation, network and other	$ 1,023	$ 977
Current Assets
Cash and Cash Equivalents	4,378	2,550		$ 6,610	$ 2,942
Short-term Investments	4,008			2,354
Accounts and notes receivable, net	3,492		$ 3,808	3,711
Due from Affiliate, Current	0			0
Device and accessory inventory	622		979	1,003
Prepaid expenses and other current assets	895		846	575
Total current assets	13,395			14,253
Investments in Subsidiaries	0			0
Property, plant and equipment, net	20,538			19,925
Costs to acquire a customer contract	1,294		1,219
Due from Consolidated Affiliate	0			0
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	6,586			6,586
FCC licenses and other	41,368			41,309
Definite-lived intangible assets, net	2,245			2,465
Other assets	1,023		964	921
Total assets	86,449			85,459
Current Liabilities
Accounts Payable, Current	3,143			3,409
Accrued expenses and other current liabilities	3,658		3,927	3,962
Current portion of long-term debt, financing and capital lease obligations	4,846			3,429
Due to Affiliate, Current	0			0
Total current liabilities	11,647			10,800
Long-term debt, financing and capital lease obligations	35,771			37,463
Deferred tax liabilities	7,704		7,660	7,294
Note due to consolidated affiliate	0			0
Other liabilities	3,382		$ 3,451	3,483
Due to affiliate	0			0
Total liabilities	58,504			59,040
Commitments and contingencies
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	27,945			26,419
Stockholders' Equity Attributable to Noncontrolling Interest	52			63
Total stockholders' equity	27,893			26,356
Liabilities and Equity	86,449			85,459
Due from Affiliate, Noncurrent	0			0
Depreciation, equipment rentals	1,136	854
Consolidation, Eliminations [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Depreciation, network and other	0	0
Current Assets
Cash and Cash Equivalents	0	0		0	0
Short-term Investments	0			0
Accounts and notes receivable, net	(717)			(347)
Due from Affiliate, Current	(424)			(424)
Device and accessory inventory	0			0
Prepaid expenses and other current assets	0			0
Total current assets	(1,141)			(771)
Investments in Subsidiaries	(46,662)			(45,136)
Property, plant and equipment, net	0			0
Costs to acquire a customer contract	0
Due from Consolidated Affiliate	(1,717)			(595)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	0			0
FCC licenses and other	0			0
Definite-lived intangible assets, net	0			0
Other assets	0			0
Total assets	(84,951)			(82,380)
Current Liabilities
Accounts Payable, Current	0			0
Accrued expenses and other current liabilities	(717)			(347)
Current portion of long-term debt, financing and capital lease obligations	0			0
Due to Affiliate, Current	(424)			(424)
Total current liabilities	(1,141)			(771)
Long-term debt, financing and capital lease obligations	0			0
Deferred tax liabilities	0			0
Note due to consolidated affiliate	(35,431)			(35,878)
Other liabilities	0			0
Due to affiliate	(1,717)			(595)
Total liabilities	(38,289)			(37,244)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(46,662)			(45,136)
Stockholders' Equity Attributable to Noncontrolling Interest	0			0
Total stockholders' equity	(46,662)			(45,136)
Liabilities and Equity	(84,951)			(82,380)
Due from Affiliate, Noncurrent	(35,431)			(35,878)
Depreciation, equipment rentals	0	0
Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Depreciation, network and other	0	0
Current Assets
Cash and Cash Equivalents	0	0		0	0
Short-term Investments	0			0
Accounts and notes receivable, net	236			99
Due from Affiliate, Current	0			0
Device and accessory inventory	0			0
Prepaid expenses and other current assets	3			5
Total current assets	239			104
Investments in Subsidiaries	27,885			26,351
Property, plant and equipment, net	0			0
Costs to acquire a customer contract	0
Due from Consolidated Affiliate	6			1
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	0			0
FCC licenses and other	0			0
Definite-lived intangible assets, net	0			0
Other assets	0			0
Total assets	39,994			38,343
Current Liabilities
Accounts Payable, Current	0			0
Accrued expenses and other current liabilities	237			100
Current portion of long-term debt, financing and capital lease obligations	0			0
Due to Affiliate, Current	0			0
Total current liabilities	237			100
Long-term debt, financing and capital lease obligations	11,864			11,887
Deferred tax liabilities	0			0
Note due to consolidated affiliate	0			0
Other liabilities	0			0
Due to affiliate	0			0
Total liabilities	12,101			11,987
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	27,893			26,356
Stockholders' Equity Attributable to Noncontrolling Interest	0			0
Total stockholders' equity	27,893			26,356
Liabilities and Equity	39,994			38,343
Due from Affiliate, Noncurrent	11,864			11,887
Depreciation, equipment rentals	0	0
Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Depreciation, network and other	0	0
Current Assets
Cash and Cash Equivalents	3,962	2,034		6,222	2,461
Short-term Investments	4,008			2,354
Accounts and notes receivable, net	481			248
Due from Affiliate, Current	424			424
Device and accessory inventory	0			0
Prepaid expenses and other current assets	12			9
Total current assets	8,887			9,257
Investments in Subsidiaries	18,777			18,785
Property, plant and equipment, net	0			0
Costs to acquire a customer contract	0
Due from Consolidated Affiliate	1,711			0
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	0			0
FCC licenses and other	0			0
Definite-lived intangible assets, net	0			0
Other assets	198			185
Total assets	53,140			52,218
Current Liabilities
Accounts Payable, Current	0			0
Accrued expenses and other current liabilities	414			341
Current portion of long-term debt, financing and capital lease obligations	1,817			1,832
Due to Affiliate, Current	0			0
Total current liabilities	2,231			2,173
Long-term debt, financing and capital lease obligations	10,348			10,381
Deferred tax liabilities	0			0
Note due to consolidated affiliate	11,864			11,887
Other liabilities	812			831
Due to affiliate	0			595
Total liabilities	25,255			25,867
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	27,885			26,351
Stockholders' Equity Attributable to Noncontrolling Interest	0			0
Total stockholders' equity	27,885			26,351
Liabilities and Equity	53,140			52,218
Due from Affiliate, Noncurrent	23,567			23,991
Depreciation, equipment rentals	0	0
Non-Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Depreciation, network and other	1,023	977
Other Additional Capital	1,500					$ 42
Current Assets
Cash and Cash Equivalents	416	516		388	$ 481
Short-term Investments	0			0
Accounts and notes receivable, net	3,492			3,711
Due from Affiliate, Current	0			0
Device and accessory inventory	622			1,003
Prepaid expenses and other current assets	880			561
Total current assets	5,410			5,663
Investments in Subsidiaries	0			0
Property, plant and equipment, net	20,538			19,925
Costs to acquire a customer contract	1,294
Due from Consolidated Affiliate	0			594
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	6,586			6,586
FCC licenses and other	41,368			41,309
Definite-lived intangible assets, net	2,245			2,465
Other assets	825			736
Total assets	78,266			77,278
Current Liabilities
Accounts Payable, Current	3,143			3,409
Accrued expenses and other current liabilities	3,724			3,868
Current portion of long-term debt, financing and capital lease obligations	3,029			1,597
Due to Affiliate, Current	424			424
Total current liabilities	10,320			9,298
Long-term debt, financing and capital lease obligations	13,559			15,195
Deferred tax liabilities	7,704			7,294
Note due to consolidated affiliate	23,567			23,991
Other liabilities	2,570			2,652
Due to affiliate	1,717			0
Total liabilities	59,437			58,430
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	18,829			18,848
Stockholders' Equity Attributable to Noncontrolling Interest	52			63
Total stockholders' equity	18,777			18,785
Liabilities and Equity	78,266			77,278
Due from Affiliate, Noncurrent	0			$ 0
Depreciation, equipment rentals	$ 1,136	$ 854

Guarantor Financial Informati72

Guarantor Financial Information (CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Condensed Income Statements, Captions [Line Items]
Net operating revenues	$ 8,125	$ 8,157
Sales Revenue, Services, Net	5,740	6,071
Revenue, equipment sales, net	1,173	1,187
Revenue, equipment rentals, net	1,212	899
Cost of Services (exclusive of depreciation and amortization included below)	1,677	1,709
Cost of equipment sales	1,270	1,545
Cost of equipment rentals	124	112
Net operating expenses
Selling, general and administrative	1,867	1,938
Depreciation, network and other	1,023	977
Depreciation, equipment rentals	1,136	854
Amortization	171	223	$ 628
Other, net	42	(364)
Total costs and expenses	7,310	6,994
Operating Income	815	1,163	2,491
Other (expense) income
Interest Income	42	19
Interest Expense	(637)	(613)	(1,789)
(Losses) earnings of Subsidiaries	0	0
Other nonoperating income (expense), excluding interest income	0	(71)
Nonoperating Expense	(595)	(665)
Loss (income) before income taxes	220	498	$ 652
Income tax benefit	(47)	(292)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	173	206
Net Income (Loss) Attributable to Noncontrolling Interest	3	0
Net Income (Loss) Attributable to Parent	176	206
Other Comprehensive Income (Loss), Net of Tax	(4)	(4)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	169
Comprehensive (loss) income	169	202
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Net operating revenues	0	0
Sales Revenue, Services, Net	0	0
Revenue, equipment sales, net	0	0
Revenue, equipment rentals, net	0	0
Cost of Services (exclusive of depreciation and amortization included below)	0	0
Cost of equipment sales	0	0
Cost of equipment rentals	0	0
Net operating expenses
Selling, general and administrative	0	0
Depreciation, network and other	0	0
Depreciation, equipment rentals	0	0
Amortization	0	0
Other, net	0	0
Total costs and expenses	0	0
Operating Income	0	0
Other (expense) income
Interest Income	(733)	(228)
Interest Expense	733	228
(Losses) earnings of Subsidiaries	(378)	(730)
Other nonoperating income (expense), excluding interest income	0	0
Nonoperating Expense	(378)	(730)
Loss (income) before income taxes	(378)	(730)
Income tax benefit	0	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(378)
Net Income (Loss) Attributable to Noncontrolling Interest	0
Net Income (Loss) Attributable to Parent	(378)	(730)
Other Comprehensive Income (Loss), Net of Tax	17	(1)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(361)
Comprehensive (loss) income		(731)
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net operating revenues	0	0
Sales Revenue, Services, Net	0	0
Revenue, equipment sales, net	0	0
Revenue, equipment rentals, net	0	0
Cost of Services (exclusive of depreciation and amortization included below)	0	0
Cost of equipment sales	0	0
Cost of equipment rentals	0	0
Net operating expenses
Selling, general and administrative	0	0
Depreciation, network and other	0	0
Depreciation, equipment rentals	0	0
Amortization	0	0
Other, net	0	0
Total costs and expenses	0	0
Operating Income	0	0
Other (expense) income
Interest Income	226	198
Interest Expense	(226)	(198)
(Losses) earnings of Subsidiaries	176	206
Other nonoperating income (expense), excluding interest income	0	0
Nonoperating Expense	176	206
Loss (income) before income taxes	176	206
Income tax benefit	0	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	176
Net Income (Loss) Attributable to Noncontrolling Interest	0
Net Income (Loss) Attributable to Parent	176	206
Other Comprehensive Income (Loss), Net of Tax	(4)	(4)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	172
Comprehensive (loss) income		202
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net operating revenues	0	0
Sales Revenue, Services, Net	0	0
Revenue, equipment sales, net	0	0
Revenue, equipment rentals, net	0	0
Cost of Services (exclusive of depreciation and amortization included below)	0	0
Cost of equipment sales	0	0
Cost of equipment rentals	0	0
Net operating expenses
Selling, general and administrative	0	0
Depreciation, network and other	0	0
Depreciation, equipment rentals	0	0
Amortization	0	0
Other, net	0	(55)
Total costs and expenses	0	(55)
Operating Income	0	55
Other (expense) income
Interest Income	547	45
Interest Expense	(571)	(351)
(Losses) earnings of Subsidiaries	202	524
Other nonoperating income (expense), excluding interest income	(2)	(67)
Nonoperating Expense	176	151
Loss (income) before income taxes	176	206
Income tax benefit	0	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	176
Net Income (Loss) Attributable to Noncontrolling Interest	0
Net Income (Loss) Attributable to Parent	176	206
Other Comprehensive Income (Loss), Net of Tax	(4)	(4)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	172
Comprehensive (loss) income		202
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net operating revenues	8,125	8,157
Sales Revenue, Services, Net	5,740	6,071
Revenue, equipment sales, net	1,173	1,187
Revenue, equipment rentals, net	1,212	899
Cost of Services (exclusive of depreciation and amortization included below)	1,677	1,709
Cost of equipment sales	1,270	1,545
Cost of equipment rentals	124	112
Net operating expenses
Selling, general and administrative	1,867	1,938
Depreciation, network and other	1,023	977
Depreciation, equipment rentals	1,136	854
Amortization	171	223
Other, net	42	(309)
Total costs and expenses	7,310	7,049
Operating Income	815	1,108
Other (expense) income
Interest Income	2	4
Interest Expense	(573)	(292)
(Losses) earnings of Subsidiaries	0	0
Other nonoperating income (expense), excluding interest income	2	(4)
Nonoperating Expense	(569)	(292)
Loss (income) before income taxes	246	816
Income tax benefit	(47)	(292)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	199
Net Income (Loss) Attributable to Noncontrolling Interest	3
Net Income (Loss) Attributable to Parent	202	524
Other Comprehensive Income (Loss), Net of Tax	(13)	5
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 186
Comprehensive (loss) income		$ 529

Guarantor Financial Informati73

Guarantor Financial Information (CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2017	Mar. 31, 2018
Cash flows from operating activities
Net Cash Provided by Operating Activities	$ 2,430	$ 1,924
Cash flows from investing activities
Capital expenditures - network and other	(1,132)	(1,151)
Capital expenditures - leased devices	(1,817)	(1,359)
Expenditures relating to FCC licenses	(59)	(13)
Proceeds from sales and maturities of short-term investments	810	2,594
Payments to Acquire Short-term Investments	(2,464)	(1,499)
Increase (decrease) due from consolidated affiliate from investing activities	0	0
Proceeds from sales of assets and FCC Licenses	133	101
Proceeds from Sale and Collection of Receivables	170	375
Proceeds from Collection of Advance to Affiliate	0
Payments for (Proceeds from) Other Investing Activities	(10)	(1)
Net Cash Used in Investing Activities	(4,369)	(953)
Cash flows from financing activities
Proceeds from debt and financings	1,370	902
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,415)	(2,121)
Debt financing costs	248	0
Increase (decrease) due from/to consolidated affiliates from financing activities	0	0
Repayments of intercompany note advance from parent	0
Other, net	(2)	(15)
Net cash provided by (used in) financing activities	(295)	(1,363)
Cash and Cash Equivalents, Period Increase (Decrease)		(392)
Cash, Cash Equivalents, Restricted Cash, Restricted Cash Equivalents, Period Increase (Decrease)	(2,234)	(392)
Cash and cash equivalents, end of period	4,378	2,550	$ 2,942
Call premiums paid on debt redemptions	0	(129)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	4,425	2,550	2,942	$ 6,659
Parent Company [Member]
Cash flows from operating activities
Net Cash Provided by Operating Activities	0	0
Cash flows from investing activities
Capital expenditures - network and other	0	0
Capital expenditures - leased devices	0	0
Expenditures relating to FCC licenses	0	0
Proceeds from sales and maturities of short-term investments	0	0
Payments to Acquire Short-term Investments	0	0
Increase (decrease) due from consolidated affiliate from investing activities	28	0
Proceeds from sales of assets and FCC Licenses	0	0
Proceeds from Sale and Collection of Receivables	0	0
Proceeds from Collection of Advance to Affiliate	0
Payments for (Proceeds from) Other Investing Activities	0	0
Net Cash Used in Investing Activities	28	0
Cash flows from financing activities
Proceeds from debt and financings	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	0
Debt financing costs	28
Increase (decrease) due from/to consolidated affiliates from financing activities	0	0
Repayments of intercompany note advance from parent	0
Other, net	0	0
Net cash provided by (used in) financing activities	(28)	0
Cash and Cash Equivalents, Period Increase (Decrease)		0
Cash, Cash Equivalents, Restricted Cash, Restricted Cash Equivalents, Period Increase (Decrease)	0
Cash and cash equivalents, end of period	0	0	0
Call premiums paid on debt redemptions		0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	0			0
Guarantor Subsidiaries [Member]
Cash flows from operating activities
Net Cash Provided by Operating Activities	(231)	(394)
Cash flows from investing activities
Capital expenditures - network and other	0	0
Capital expenditures - leased devices	0	0
Expenditures relating to FCC licenses	0	0
Proceeds from sales and maturities of short-term investments	810	2,594
Payments to Acquire Short-term Investments	(2,464)	(1,499)
Increase (decrease) due from consolidated affiliate from investing activities	(778)	588
Proceeds from sales of assets and FCC Licenses	0	0
Proceeds from Sale and Collection of Receivables	0	0
Proceeds from Collection of Advance to Affiliate	424
Payments for (Proceeds from) Other Investing Activities	0	2
Net Cash Used in Investing Activities	(2,008)	1,685
Cash flows from financing activities
Proceeds from debt and financings	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(10)	(1,598)
Debt financing costs	9
Increase (decrease) due from/to consolidated affiliates from financing activities	0	0
Repayments of intercompany note advance from parent	0
Other, net	(2)	9
Net cash provided by (used in) financing activities	(21)	(1,718)
Cash and Cash Equivalents, Period Increase (Decrease)		(427)
Cash, Cash Equivalents, Restricted Cash, Restricted Cash Equivalents, Period Increase (Decrease)	(2,260)
Cash and cash equivalents, end of period	3,962	2,034	2,461
Call premiums paid on debt redemptions		(129)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	3,962			6,222
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities
Net Cash Provided by Operating Activities	2,661	2,318
Cash flows from investing activities
Capital expenditures - network and other	(1,132)	(1,151)
Capital expenditures - leased devices	(1,817)	(1,359)
Expenditures relating to FCC licenses	(59)	(13)
Proceeds from sales and maturities of short-term investments	0	0
Payments to Acquire Short-term Investments	0	0
Increase (decrease) due from consolidated affiliate from investing activities	0	0
Proceeds from sales of assets and FCC Licenses	133	101
Proceeds from Sale and Collection of Receivables	170	375
Proceeds from Collection of Advance to Affiliate	0
Payments for (Proceeds from) Other Investing Activities	(10)	(3)
Net Cash Used in Investing Activities	(2,715)	(2,050)
Cash flows from financing activities
Proceeds from debt and financings	1,370	902
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,405)	(523)
Debt financing costs	211
Increase (decrease) due from/to consolidated affiliates from financing activities	750	(588)
Repayments of intercompany note advance from parent	(424)
Other, net	0	(24)
Net cash provided by (used in) financing activities	80	(233)
Cash and Cash Equivalents, Period Increase (Decrease)		35
Cash, Cash Equivalents, Restricted Cash, Restricted Cash Equivalents, Period Increase (Decrease)	26
Cash and cash equivalents, end of period	416	516	481
Call premiums paid on debt redemptions		0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	463			437
Consolidation, Eliminations [Member]
Cash flows from operating activities
Net Cash Provided by Operating Activities	0	0
Cash flows from investing activities
Capital expenditures - network and other	0	0
Capital expenditures - leased devices	0	0
Expenditures relating to FCC licenses	0	0
Proceeds from sales and maturities of short-term investments	0	0
Payments to Acquire Short-term Investments	0	0
Increase (decrease) due from consolidated affiliate from investing activities	750	(588)
Proceeds from sales of assets and FCC Licenses	0	0
Proceeds from Sale and Collection of Receivables	0	0
Proceeds from Collection of Advance to Affiliate	(424)
Payments for (Proceeds from) Other Investing Activities	0	0
Net Cash Used in Investing Activities	326	(588)
Cash flows from financing activities
Proceeds from debt and financings	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	0
Debt financing costs	0
Increase (decrease) due from/to consolidated affiliates from financing activities	(750)	588
Repayments of intercompany note advance from parent	424
Other, net	0	0
Net cash provided by (used in) financing activities	(326)	588
Cash and Cash Equivalents, Period Increase (Decrease)		0
Cash, Cash Equivalents, Restricted Cash, Restricted Cash Equivalents, Period Increase (Decrease)	0
Cash and cash equivalents, end of period	0	0	$ 0
Call premiums paid on debt redemptions		$ 0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 0			$ 0

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	1 Months Ended
	Feb. 28, 2017	Oct. 31, 2016	Feb. 02, 2017
Subsequent Event [Line Items]
Long-term Debt, Gross			$ 6,000,000,000
Long-term Debt, Percentage Bearing Variable Interest, Amount			250
Sprint Nextel Corporation [Member] | Secured term loan [Member]
Subsequent Event [Line Items]
Long-term Debt, Gross			4,000,000,000
Debt Instrument, Term	7 years
Secured Revolving Bank Credit Facility expires in Feb 2021[Member] [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 2,000,000,000
Spectrum Assets [Member]
Subsequent Event [Line Items]
Concentration Risk, Percentage		14.00%

Uncategorized Items - s-2018063

Label	Element	Value
Retained Earnings [Member]
Net Income (Loss) Attributable to Parent	us-gaap_NetIncomeLoss	$ 176,000,000