Allegion (ALLE) 10-Q 24 Oct 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 21, 2019
Class of Stock [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-35971
Entity Central Index Key	0001579241
Entity Registrant Name	Allegion plc
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Incorporation, State or Country Code	L2
Entity Tax Identification Number	98-1108930
Entity Address, Address Line One	Block D
Entity Address, Address Line Two	Iveagh Court
Entity Address, Address Line Three	Harcourt Road
Entity Address, City or Town	Dublin
Entity Address, Postal Zip Code	2
Entity Address, Country	IE
Country Region	353
City Area Code	1
Local Phone Number	2546200
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		92,916,555
Ordinary shares
Class of Stock [Line Items]
Title of 12(b) Security	Ordinary shares, par value $0.01 per share
Trading Symbol	ALLE
Security Exchange Name	NYSE
3.500% Senior Notes Due 2029
Class of Stock [Line Items]
Title of 12(b) Security	3.500% Senior Notes due 2029
Trading Symbol	ALLE 3 ½
Security Exchange Name	NYSE

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net revenues	$ 748.3	$ 711.5	$ 2,134.5	$ 2,029.3
Cost of goods sold	412.8	402.1	1,201.4	1,156.5
Selling and administrative expenses	167.4	167.1	511.3	488.4
Operating income	168.1	142.3	421.8	384.4
Interest expense	15.6	14	42.7	40.3
Other expense (income), net	2	(1.9)	1.6	(3.9)
Earnings before income taxes	150.5	130.2	377.5	348
Provision for income taxes	18.8	14.1	56.1	45.5
Net earnings	131.7	116.1	321.4	302.5
Less: Net earnings attributable to noncontrolling interests	0.1	0.1	0.3	0.4
Net earnings attributable to Allegion plc	$ 131.6	$ 116	$ 321.1	$ 302.1
Earnings per share attributable to Allegion plc ordinary shareholders:
Basic net earnings	$ 1.41	$ 1.22	$ 3.42	$ 3.18
Diluted net earnings	$ 1.40	$ 1.21	$ 3.40	$ 3.15
Weighted-average shares outstanding
Basic	93.3	95.1	93.8	95.1
Diluted	94	95.8	94.5	95.8
Total comprehensive income	$ 90.8	$ 103.3	$ 270.9	$ 265.3
Less: Total comprehensive loss attributable to noncontrolling interests	(0.9)	(0.6)	(0.7)	(1.6)
Total comprehensive income attributable to Allegion plc	$ 91.7	$ 103.9	$ 271.6	$ 266.9

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 232.9	$ 283.8
Restricted cash	3.4	6.8
Accounts and notes receivable, net	367.5	324.9
Inventories	293.9	280.3
Other current assets	32.5	35
Assets held for sale	2.9	0.8
Total current assets	933.1	931.6
Property, plant and equipment, net	281.9	276.7
Goodwill	860.4	883
Intangible assets, net	511.7	547.1
Other noncurrent assets	278.3	171.8
Total assets	2,865.4	2,810.2
LIABILITIES AND EQUITY
Accounts payable	208.8	235
Accrued expenses and other current liabilities	282.3	250.5
Short-term borrowings and current maturities of long-term debt	0.1	35.3
Total current liabilities	491.2	520.8
Long-term debt	1,427	1,409.5
Other noncurrent liabilities	260	225.9
Total liabilities	2,178.2	2,156.2
Equity:
Ordinary shares, $0.01 par value (93,018,092 and 94,637,450 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively)	0.9	0.9
Capital in excess of par value	0	0
Retained earnings	957.1	873.6
Accumulated other comprehensive loss	(273)	(223.5)
Total Allegion plc shareholders’ equity	685	651
Noncontrolling interests	2.2	3
Total equity	687.2	654
Total liabilities and equity	$ 2,865.4	$ 2,810.2

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net earnings	$ 321.4	$ 302.5
Adjustments to arrive at net cash provided by operating activities:
Depreciation and amortization	62.6	65.8
Changes in assets and liabilities and other non-cash items	(104.6)	(107.9)
Net cash provided by operating activities	279.4	260.4
Cash flows from investing activities:
Capital expenditures	(49.4)	(31.8)
Acquisition of and equity investments in businesses, net of cash acquired	(4.6)	(375.8)
Other investing activities, net	(2)	(1.1)
Net cash used in investing activities	(56)	(408.7)
Cash flows from financing activities:
Payments of short-term borrowings	(0.3)	(0.7)
Proceeds from revolving facility	0	115
Repayments of revolving facility	0	(115)
Proceeds from issuance of senior notes	400	0
Payments of other long-term debt	(417.7)	(26.7)
Debt repayments, net	(18)	(27.4)
Debt issuance costs	(3)	0
Dividends paid to ordinary shareholders	(75.5)	(59.6)
Repurchase of ordinary shares	(179.7)	(30)
Other financing activities, net	1.8	0.1
Net cash used in financing activities	(274.4)	(116.9)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(3.3)	(4.5)
Net decrease in cash, cash equivalents and restricted cash	(54.3)	(269.7)
Cash, cash equivalents and restricted cash - beginning of period	290.6	466.2
Cash, cash equivalents and restricted cash - end of period	$ 236.3	$ 196.5

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	BASIS OF PRESENTATION The accompanying Condensed and Consolidated Financial Statements of Allegion plc, an Irish public limited company, and its consolidated subsidiaries ("Allegion" or the "Company"), reflect the consolidated operations of the Company and have been prepared in accordance with United States ("U.S.") Securities and Exchange Commission ("SEC") interim reporting requirements. Accordingly, the accompanying Condensed and Consolidated Financial Statements do not include all disclosures required by accounting principles generally accepted in the United States of America ("GAAP") for full financial statements and should be read in conjunction with the Consolidated Financial Statements included in the Allegion Annual Report on Form 10-K for the year ended December 31, 2018

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Recently Adopted Accounting Pronouncements: In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)." ASU 2016-02 requires the identification of arrangements that should be accounted for as leases. In general, for lease arrangements of a twelve-month term or greater, these arrangements are to be recognized as assets and liabilities on the balance sheet of the lessee. Under ASU 2016-02, a right-of-use asset and lease obligation are recorded for all leases, whether operating or financing, while the statement of comprehensive income reflects lease expense for operating leases and amortization/interest expense for financing leases. In July 2018, the FASB issued ASU 2018-10, "Codification Improvements to Topic 842 (Leases)", which provided narrow amendments to clarify how to apply certain aspects of ASU 2016-02, and ASU 2018-11, "Leases (Topic 842): Targeted Improvements", which provided an additional transition method by allowing entities to initially apply ASU 2016-02, and subsequent related standards, at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. In March 2019, the FASB issued ASU 2019-01, "Leases (Topic 842): Codification Improvements", which exempted entities from having to provide certain interim disclosures in the fiscal year of adoption of ASU 2016-02 and its related standards. These ASUs (collectively “ASC 842”) were effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. Accordingly, the Company adopted ASC 842 on January 1, 2019, utilizing the transition method allowed per ASU 2018-11. Comparative period financial information has not been adjusted for the effects of adopting ASC 842, and no cumulative-effect adjustment was required to the opening balance of Retained earnings on the adoption date. The Company has also made updates to its systems, policies and internal controls over financial reporting related to the adoption of ASC 842 on January 1, 2019. See Note 9 to the Condensed and Consolidated Financial Statements for further information and expanded disclosure related to the Company's lease portfolio. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, "Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." ASU 2016-13 and its subsequent related updates introduces an approach based on expected losses to estimate credit losses on certain types of financial instruments and replaces the current incurred loss impairment model. ASU 2016-13 and its subsequent related updates will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. The Company is assessing what impact ASU 2016-13 and its subsequent related updates will have on the Condensed and Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-15, "Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract." The new guidance aligns the requirements for capitalizing implementation costs incurred in a cloud-based hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. The Company is assessing what impact ASU 2018-15 will have on the Condensed and Consolidated Financial Statements.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2019
Inventory, Net [Abstract]
Inventories	INVENTORIES Inventories are stated at the lower of cost and net realizable value using the first-in, first-out (FIFO) method. The major classes of inventory were as follows: In millions September 30, December 31, Raw materials $ 127.0 $ 117.2 Work-in-process 34.6 34.4 Finished goods 132.3 128.7 Total $ 293.9 $ 280.3

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	GOODWILL The changes in the carrying amount of goodwill for the nine months ended September 30, 2019 , were as follows: In millions Americas EMEIA Asia Pacific Total December 31, 2018 (gross) $ 486.1 $ 767.1 $ 115.3 $ 1,368.5 Accumulated impairment — (478.6 ) (6.9 ) (485.5 ) December 31, 2018 (net) 486.1 288.5 108.4 883.0 Acquisitions and adjustments (a) (1.3 ) 2.7 (4.4 ) (3.0 ) Currency translation — (13.7 ) (5.9 ) (19.6 ) September 30, 2019 (net) $ 484.8 $ 277.5 $ 98.1 $ 860.4 (a)

Intangible Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	INTANGIBLE ASSETS The gross amount of the Company’s intangible assets and related accumulated amortization were as follows: September 30, 2019 December 31, 2018 In millions Gross carrying amount Accumulated amortization Net carrying amount Gross carrying amount Accumulated amortization Net carrying amount Completed technologies/patents $ 58.3 $ (17.4 ) $ 40.9 $ 59.4 $ (14.2 ) $ 45.2 Customer relationships 403.2 (99.6 ) 303.6 419.3 (88.5 ) 330.8 Trade names (finite-lived) 80.2 (47.2 ) 33.0 84.9 (47.4 ) 37.5 Other 14.9 (7.4 ) 7.5 9.5 (6.5 ) 3.0 Total finite-lived intangible assets 556.6 $ (171.6 ) 385.0 573.1 $ (156.6 ) 416.5 Trade names (indefinite-lived) 126.7 126.7 130.6 130.6 Total $ 683.3 $ 511.7 $ 703.7 $ 547.1 Intangible asset amortization expense was $23.3 million and $28.6 million for the nine months ended September 30, 2019 and 2018 , respectively. Future estimated amortization expense on existing intangible assets in each of the next five years amounts to approximately $ 30.3 million for full year 2019 , $ 28.2 million for 2020 , $ 28.2 million for 2021 , $ 28.1 million for 2022 and $ 28.0 million for 2023

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Acquisitions	ACQUISITIONS 2018 In 2018, the Company completed six acquisitions: Business Date Technical Glass Products, Inc. ("TGP") January 2018 Hammond Enterprises, Inc. ("Hammond") January 2018 Qatar Metal Industries LLC ("QMI") February 2018 AD Systems, Inc. ("AD Systems") March 2018 Gainsborough Hardware and API Locksmiths ("Door and Access Systems") July 2018 ISONAS Security Systems, Inc. ("ISONAS") July 2018 Total cash paid for these acquisitions was approximately $373 million (net of cash acquired), including $4.6 million during the nine months ended September 30, 2019. These acquisitions were accounted for as business combinations. The allocation of the aggregate purchase price to assets acquired and liabilities assumed was complete for all six acquisitions as of June 30, 2019. The allocation of the aggregate purchase price to assets acquired and liabilities assumed for the acquisitions listed above was as follows: In millions Accounts receivable, net $ 28.9 Inventories 28.5 Other current assets 1.3 Property, plant and equipment, net 27.6 Goodwill 139.8 Intangible assets, net 204.3 Other noncurrent assets 2.0 Accounts payable (11.1 ) Accrued expenses and other current liabilities (35.7 ) Other noncurrent liabilities (11.1 ) Total $ 374.5 Intangible assets were primarily comprised of approximately $59 million of indefinite-lived trade names, $112 million of customer relationships and $33 million of completed technologies and other intangibles, which included approximately $6 million of acquired backlog revenue. The customer relationships have a 17 -year weighted-average useful life, while the completed technologies and other intangibles, excluding the backlog revenue, have a 16 -year weighted-average useful life. The backlog revenue was fully amortized as of June 30, 2018. Goodwill results from several factors including Allegion-specific synergies that were excluded from the cash flow projections used in the valuation of intangible assets and intangible assets that do not qualify for separate recognition, for example, assembled workforce. The majority of the goodwill is expected to be deductible for tax purposes. The following unaudited pro forma financial information for the three and nine months ended September 30, 2018, reflects the consolidated results of operations of the Company as if these acquisitions had taken place on January 1, 2017: In millions Three months ended September 30, 2018 Nine months ended September 30, 2018 Net revenues $ 711.5 $ 2,071.8 Net earnings attributable to Allegion plc 119.3 313.1 The unaudited pro forma financial information is presented for informational purposes only and does not purport to be indicative of results of operations that would have occurred had the pro forma events taken place on the date indicated or the future consolidated results of operations of the combined company. The unaudited pro forma financial information has been calculated after applying the Company's accounting policies and adjusting the historical financial results to reflect additional items directly attributable to the acquisitions that would have been incurred assuming the acquisitions had occurred on January 1, 2017. Adjustments to historical financial information include removal of backlog revenue acquired as well as acquisition and integration expenses incurred related to these acquisitions, partially offset by incremental amortization of intangible assets. During the three months ended September 30, 2019 and 2018 , the Company incurred $0.1 million and $4.1 million , respectively, of acquisition and integration related expenses. During the nine months ended September 30, 2019 and 2018 , the Company incurred $1.9 million and $8.6 million , respectively, of acquisition and integration related expenses. These expenses are included in Selling and administrative expenses in the Condensed and Consolidated Statements of Comprehensive Income. In 2018 , the Company also made $8 million of equity method investments in three entities, Yonomi Inc., a U.S. based mobile application and cloud platform provider for connected living, Nuki GmbH, a European retrofit residential smart lock innovator, and Conneqtech, a European based IoT platform developer specializing in connected mobility and tracking features for bicycles and healthcare.

Debt and Credit Facilities

Debt and Credit Facilities	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt and Credit Facilities	DEBT AND CREDIT FACILITIES Long-term debt and other borrowings consisted of the following: In millions September 30, December 31, Term Facility $ 238.8 $ 656.3 Revolving Facility — — 3.200% Senior Notes due 2024 400.0 400.0 3.550% Senior Notes due 2027 400.0 400.0 3.500% Senior Notes due 2029 400.0 — Other debt 0.7 1.2 Total borrowings outstanding 1,439.5 1,457.5 Less discounts and debt issuance costs, net (12.4 ) (12.7 ) Total debt 1,427.1 1,444.8 Less current portion of long-term debt 0.1 35.3 Total long-term debt $ 1,427.0 $ 1,409.5 Unsecured Credit Facilities As of September 30, 2019 , the Company has an unsecured Credit Agreement in place, consisting of a $700.0 million term loan facility (the “Term Facility”), of which $238.8 million is outstanding at September 30, 2019 , and a $500.0 million revolving credit facility (the “Revolving Facility” and, together with the Term Facility, the “Credit Facilities”). The Credit Facilities mature on September 12, 2022, and are unconditionally guaranteed jointly and severally on an unsecured basis by the Company and Allegion US Holding Company Inc. ("Allegion US Hold Co"), the Company's wholly-owned subsidiary. At inception, the Term Facility was scheduled to amortize in quarterly installments at the following rates: 1.25% per quarter starting December 31, 2017 through December 31, 2020, 2.5% per quarter from March 31, 2021 through June 30, 2022, with the balance due on September 12, 2022. Principal amounts repaid on the Term Facility may not be reborrowed. During the three months ended September 30, 2019 , the Company made a $400.0 million principal payment to partially pay down the outstanding Term Facility balance, utilizing all of the net proceeds from the issuance of the 3.500% Senior Notes due 2029 (see below), plus cash on hand. As a result of this payment, the Company has satisfied its obligation to make quarterly installments on the Term Facility up to the maturity date, with the remaining outstanding balance due on September 12, 2022. In conjunction with this principal pay down, the Company recognized a $2.7 million charge related to the write-off of previously deferred financing costs related to the Term Facility, which is included in Interest expense in the Condensed and Consolidated Statements of Comprehensive Income for both the three and nine month periods ended September 30, 2019. The Revolving Facility provides aggregate commitments of up to $500.0 million , which includes up to $100.0 million for the issuance of letters of credit. At September 30, 2019 , there were no borrowings outstanding on the Revolving Facility and the Company had $16.2 million of letters of credit outstanding. Commitments under the Revolving Facility may be reduced at any time without premium or penalty, and amounts repaid may be reborrowed. Outstanding borrowings under the Credit Facilities accrue interest, at the option of the Company, of (i) a LIBOR rate plus the applicable margin or (ii) a base rate plus the applicable margin. The applicable margin ranges from 1.125% to 1.500% depending on the Company's credit ratings. At September 30, 2019 , the outstanding borrowings under the Credit Facilities accrue interest at LIBOR plus a margin of 1.250% . To manage the Company's exposure to fluctuations in LIBOR rates, the Company has interest rate swaps to fix the interest rate for $200.0 million of the outstanding borrowings as of September 30, 2019 (see Note 8). The Credit Facilities contain negative and affirmative covenants and events of default that, among other things, limit or restrict the Company's ability to enter into certain transactions. In addition, the Credit Facilities require the Company to comply with a maximum leverage ratio and a minimum interest expense coverage ratio, as defined within the agreement. As of September 30, 2019 , the Company was in compliance with all covenants. Senior Notes As of September 30, 2019 , Allegion US Hold Co has $400.0 million outstanding of its 3.200% Senior Notes due 2024 (the “3.200% Senior Notes”) and $400.0 million outstanding of its 3.550% Senior Notes due 2027 (the “3.550% Senior Notes”). The 3.200% Senior Notes and the 3.550% Senior Notes require semi-annual interest payments on April 1 and October 1 of each year, and will mature on October 1, 2024 and October 1, 2027, respectively. The 3.200% Senior Notes and the 3.550% Senior Notes are senior unsecured obligations of Allegion US Hold Co and rank equally with all of Allegion US Hold Co’s existing and future senior unsecured and unsubordinated indebtedness. The guarantee of the 3.200% Senior Notes and the 3.550% Senior Notes is the senior unsecured obligation of the Company and ranks equally with all of the Company's existing and future senior unsecured and unsubordinated indebtedness. During the three months ended September 30, 2019, Allegion plc issued $400.0 million aggregate principal amount of its 3.500% Senior Notes due 2029 (the “3.500% Senior Notes”). The 3.500% Senior Notes require semi-annual interest payments on April 1 and October 1, beginning April 1, 2020, and will mature on October 1, 2029. Net proceeds from the issuance of the 3.500% Senior Notes, along with cash on hand, were utilized to make the $400.0 million principal payment on the Term Facility discussed above. The Company incurred and deferred $4.3 million of discounts and financing costs associated with the 3.500% Senior Notes, which will be amortized to Interest expense over the 10-year term of the 3.500% Senior Notes. The 3.500% Senior Notes are senior unsecured obligations of Allegion plc, are guaranteed by Allegion US Hold Co and rank equally with all of the Company's existing and future senior unsecured indebtedness. The weighted-average interest rate for borrowings was 2.70% under the Credit Facilities (including the effect of interest rate swaps), 3.200% under the 3.200% Senior Notes, 3.550% under the 3.550% Senior Notes, and 3.500% under the 3.500% Senior Notes at September 30, 2019

Financial Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments	FINANCIAL INSTRUMENTS In the normal course of business, the Company uses various financial instruments, including derivative instruments, to manage the risks associated with interest and currency rate exposures. These financial instruments are not used for trading or speculative purposes. When a derivative contract is entered into, the Company designates the derivative instrument as a cash flow hedge of a forecasted transaction, a cash flow hedge of a recognized asset or liability or as an undesignated derivative. The Company formally documents its hedge relationships, including identification of the derivative instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transaction. This process includes linking derivative instruments that are designated as hedges to specific assets, liabilities or forecasted transactions. The fair market value of derivative instruments is determined through market-based valuations and may not be representative of the actual gains or losses that will be recorded when these instruments mature due to future fluctuations in the markets in which they are traded. The Company assesses at inception and at least quarterly thereafter, whether the derivatives used in cash flow hedging transactions are effective in offsetting the changes in the cash flows of the hedged item. To the extent the derivative is deemed to be an effective hedge, the fair market value changes of the instrument are recorded to Accumulated other comprehensive income (AOCI) and subsequently reclassified into Net earnings when the hedged transaction affects earnings. Changes in the fair market value of derivatives not deemed to be an effective hedge are recorded in Net earnings in the period of change. If the hedging relationship ceases to be effective subsequent to inception, or it becomes probable that a forecasted transaction is no longer expected to occur, the hedging relationship will be undesignated and any future gains and losses on the derivative instrument will be recorded in Net earnings. Currency Hedging Instruments The gross notional amount of the Company’s currency derivatives was $ 133.2 million and $ 81.8 million at September 30, 2019 and December 31, 2018 , respectively. At September 30, 2019 and December 31, 2018 , gains of $ 0.3 million and $ 1.8 million , net of tax, were included in Accumulated other comprehensive loss related to the fair value of the Company’s currency derivatives designated as cash flow hedges. The amount expected to be reclassified into Net earnings over the next twelve months is a gain of $ 0.3 million . The actual amounts that will be reclassified to Net earnings may vary from this amount as a result of changes in market conditions. Gains and losses associated with the Company’s currency derivatives not designated as hedges are recorded in Net earnings as changes in fair value occur. At September 30, 2019 , the maximum term of the Company’s currency derivatives was less than one year. Interest Rate Swaps The Company has interest rate swaps to fix the interest rate paid during the contract period related to the Company's variable rate Term Facility. The notional amount of these interest rate swaps was $200.0 million and $250.0 million at September 30, 2019 and December 31, 2018 , respectively. During the three months ended September 30, 2019 , the Company settled an interest rate swap with a $50.0 million notional amount in conjunction with the principal pay down on the outstanding Term Facility (see Note 7). The remaining interest rate swaps expire in September 2020 and meet the criteria to be accounted for as cash flow hedges of variable rate interest payments. Consequently, the changes in fair value of the interest rate swaps are recognized in Accumulated other comprehensive loss. At September 30, 2019 and December 31, 2018 , gains of $0.7 million and $4.3 million , net of tax, were included in Accumulated other comprehensive loss related to these interest rate swaps. The amount expected to be reclassified into Net earnings over the next twelve months is a gain of approximately $0.7 million . The actual amounts that will be reclassified to Net earnings may vary from this amount as a result of changes in market conditions. The fair values of derivative instruments included within the Condensed and Consolidated Balance Sheets were as follows: Designated as hedge instruments Not designated as hedge instruments In millions Balance Sheet classification September 30, December 31, September 30, December 31, Asset derivatives Currency derivatives Other current assets $ — $ 1.7 $ 0.3 $ 0.4 Interest rate swaps Other current assets 1.0 — — — Interest rate swaps Other noncurrent assets — 5.7 — — Total asset derivatives 1.0 7.4 0.3 0.4 Liability derivatives Currency derivatives Accrued expenses and other current liabilities 0.2 — 1.1 0.1 Total liability derivatives $ 0.2 $ — $ 1.1 $ 0.1 The amounts associated with derivatives designated as hedges affecting Net earnings and Accumulated other comprehensive loss for the three months ended September 30 were as follows: Amount of gain recognized in Accumulated other comprehensive loss Location of gain recognized Amount of gain reclassified from Accumulated other comprehensive loss and In millions 2019 2018 2019 2018 Currency derivatives $ 0.6 $ — Cost of goods sold $ 0.2 $ 1.3 Interest rate swaps 0.1 1.5 Interest expense 1.0 0.6 Total $ 0.7 $ 1.5 $ 1.2 $ 1.9 The amounts associated with derivatives designated as hedges affecting Net earnings and Accumulated other comprehensive loss for the nine months ended September 30 were as follows: Amount of gain (loss) recognized in Accumulated other comprehensive loss Location of gain recognized Amount of gain reclassified from Accumulated other comprehensive loss and In millions 2019 2018 2019 2018 Currency derivatives $ 1.6 $ 2.2 Cost of goods sold $ 3.5 $ 2.3 Interest rate swaps (2.1 ) 4.1 Interest expense 2.7 1.5 Total $ (0.5 ) $ 6.3 $ 6.2 $ 3.8 The gains and losses associated with the Company's non-designated currency derivatives, which are offset by changes in the fair value of the underlying transactions, are included within Other expense (income), net in the Condensed and Consolidated Statements of Comprehensive Income. Concentration of Credit Risk The counterparties to the Company’s forward contracts and swaps consist of a number of investment grade major international financial institutions. The Company could be exposed to losses in the event of nonperformance by the counterparties. However, the credit ratings and the concentration of risk in these financial institutions are monitored on a continuous basis and present no significant credit risk to the Company.

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	LEASES The Company records a right-of-use ("ROU") asset and lease liability for substantially all leases for which it is a lessee, in accordance with ASC 842. At inception of a contract, the Company considers all relevant facts and circumstances to assess whether or not the contract represents a lease by determining whether or not the contract conveys the right to control the use of an identified asset, either explicit or implicit, for a period of time in exchange for consideration. The Company has no significant lease agreements in place for which the Company is a lessor, and substantially all of the Company's leases for which the Company is a lessee are classified as operating leases. Total rental expense for the nine months ended September 30, 2019 , was $32.2 million and is classified within Cost of goods sold and Selling and administrative expenses within the Condensed and Consolidated Statements of Comprehensive Income. Rental expense related to short-term leases, variable lease payments or other leases or lease components not included within the ROU asset or lease liability totaled $7.5 million for the nine months ended September 30, 2019 . No material lease costs have been capitalized on the Condensed and Consolidated Balance Sheet as of September 30, 2019 . Upon adoption of ASC 842, the Company utilized the following elections and practical expedients: • The Company elected to not separate non-lease components from lease components and instead to account for each separate lease component, and the non-lease components associated with that lease component, as a single lease component. • If at the lease commencement date, a lease had a term of less than 12 months and did not include a purchase option that was reasonably certain to be exercised, the Company elected not to apply ASC 842 recognition requirements. Nonetheless, the Company will include leases of less than 12 months within the updated footnote disclosures where applicable. • If the Company enters into a large number of leases in the same month with the same terms and conditions, these will be looked at as a group (portfolio) assuming the lease model under this approach will not materially differ from applying ASC 842 to each individual lease. • The Company elected to not reassess arrangements entered into prior than January 1, 2019, in terms of whether an arrangement is or contained a lease, the lease classification applied or to separate initial direct costs. • The Company elected to use hindsight in determining the lease term for lease contracts that have historically been renewed or amended. When available, the Company will utilize the rate implicit in the lease as the discount rate to determine the lease liability in accordance with ASC 842. However, if this rate is not available, the Company will use its incremental borrowing rate as the discount rate, which is the rate at inception of the lease the Company would hypothetically incur to borrow over a similar term the funds needed to purchase the leased asset. As a lessee, the Company categorizes its leases into two general categories: real estate leases and equipment leases. The Company’s real estate lease portfolio includes leased production and assembly facilities, warehouses and distribution centers, office space and to a lesser degree, employee housing. The terms and conditions of real estate leases can vary significantly from lease to lease. The Company has assessed the specific terms and conditions of each real estate lease to determine the amount of the lease payments and the length of the lease term, which includes the minimum period over which lease payments are required plus any renewal options that are both within the Company's control to exercise and reasonably certain of being exercised upon lease commencement. In determining whether or not a renewal option is reasonably certain of being exercised, the Company assesses all relevant factors to determine if sufficient incentives exist as of lease commencement to conclude renewal is reasonably certain. There are no material residual value guarantees provided by the Company nor any restrictions or covenants imposed by the real estate leases to which the Company is a party. In determining the lease liability, the Company utilizes its incremental borrowing rate to discount the future lease payments over the lease term to present value. The Company does incur variable lease payments for certain of its real estate leases, such as reimbursements of property taxes, maintenance and other operational costs to the lessor. In general, these variable lease payments are not captured as part of the lease liability or ROU asset, but are expensed as incurred. The Company’s equipment leases include vehicles, material handling equipment, other machinery and equipment utilized in the Company's production and assembly facilities, warehouses and distribution centers, laptops and other IT equipment, as well as other miscellaneous leased equipment. Most of the equipment leases are for terms ranging from two to five years, although terms and conditions can vary from lease to lease. The Company applies similar estimates and judgments to its equipment lease portfolio in determining the lease payments and lease term as it does to its real estate lease portfolio. There are no material residual value guarantees provided by the Company nor any restrictions or covenants imposed by the equipment leases to which the Company is a party. In determining the lease liability, the Company utilizes its incremental borrowing rate to discount the future lease payments over the lease term to present value. The Company does not typically incur variable lease payments related to its equipment leases. The amounts included within the Condensed and Consolidated Balance Sheet related to the Company's ROU asset and lease liability at September 30, 2019 , were as follows: In millions Balance Sheet classification Real estate Equipment Total ROU asset Other noncurrent assets $ 57.7 $ 22.7 $ 80.4 Lease liability - current Accrued expenses and other current liabilities 14.9 10.5 25.4 Lease liability - noncurrent Other noncurrent liabilities 42.8 12.2 55.0 Other information: Weighted-average remaining term (in years) 6.7 2.5 Weighted-average discount rate 4.6 % 3.9 % The following table summarizes additional information related to the Company's lease liability for the nine months ended September 30, 2019 : In millions Real estate Equipment Total Cash paid for amounts included in the measurement of lease liabilities $ 14.2 $ 10.5 $ 24.7 ROU assets obtained in exchange for new lease liabilities 8.5 12.1 20.6 The Company frequently enters into both real estate and equipment leases in the normal course of business. While there have been lease agreements entered into that have not yet commenced as of September 30, 2019 , none of these leases provide new rights or obligations to the Company that are material individually or in the aggregate. Future Repayments Future minimum rental commitments for the subsequent five years under non-cancellable operating leases with terms in excess of one year as of December 31, 2018 were as follows: In millions Total 2019 $ 30.3 2020 21.5 2021 14.1 2022 9.3 2023 5.5 Scheduled minimum lease payments required under non-cancellable operating leases for both the real estate and equipment lease portfolios for the remainder of 2019 and each of the years thereafter as of September 30, 2019 , are as follows: In millions Remainder of 2019 2020 2021 2022 2023 Thereafter Total Real estate leases $ 4.6 $ 16.2 $ 12.9 $ 9.8 $ 5.8 $ 18.5 $ 67.8 Equipment leases 3.3 10.1 6.5 2.9 0.9 0.1 23.8 Total $ 7.9 $ 26.3 $ 19.4 $ 12.7 $ 6.7 $ 18.6 $ 91.6 The difference between the total undiscounted minimum lease payments and the combined current and noncurrent lease liabilities as of September 30, 2019 , is due to imputed interest of $11.2 million .

Pensions and Postretirement Ben

Pensions and Postretirement Benefits Other than Pensions	9 Months Ended
	Sep. 30, 2019
Retirement Benefits, Description [Abstract]
Pensions and Postretirement Benefits Other than Pensions	PENSIONS AND POSTRETIREMENT BENEFITS OTHER THAN PENSIONS The Company sponsors several U.S. defined benefit and defined contribution plans covering substantially all of its U.S. employees. Additionally, the Company has non-U.S. defined benefit and defined contribution plans covering eligible non-U.S. employees. Postretirement benefits, other than pensions, provide healthcare benefits, and in some instances, life insurance benefits, for certain eligible employees. Pension Plans The noncontributory defined benefit pension plans covering non-collectively bargained U.S. employees provide benefits on an average pay formula while most plans for collectively bargained U.S. employees provide benefits on a flat dollar benefit formula. The non-U.S. pension plans generally provide benefits based on earnings and years of service. The Company also maintains additional other supplemental plans for officers and other key employees. The components of the Company’s Net periodic pension benefit cost (income) for the three and nine months ended September 30 were as follows: U.S. Three months ended Nine months ended In millions 2019 2018 2019 2018 Service cost $ 1.9 $ 1.7 $ 4.9 $ 5.2 Interest cost 3.1 2.6 8.8 7.7 Expected return on plan assets (3.1 ) (3.6 ) (9.4 ) (10.9 ) Administrative costs and other 0.5 0.5 1.3 1.4 Net amortization of: Prior service costs — — 0.2 0.2 Plan net actuarial losses 1.4 1.1 3.5 3.0 Net periodic pension benefit cost $ 3.8 $ 2.3 $ 9.3 $ 6.6 Non-U.S. Three months ended Nine months ended In millions 2019 2018 2019 2018 Service cost $ 0.4 $ 0.4 $ 1.2 $ 1.4 Interest cost 2.1 2.2 6.5 6.4 Expected return on plan assets (3.2 ) (3.9 ) (9.7 ) (11.7 ) Administrative costs and other 0.3 0.4 1.0 1.2 Net amortization of: Prior service costs 0.1 — 0.2 — Plan net actuarial losses 0.3 0.3 1.0 0.7 Net curtailment and settlement losses 0.1 — 1.5 — Net periodic pension benefit cost (income) $ 0.1 $ (0.6 ) $ 1.7 $ (2.0 ) The Service cost component of Net periodic pension benefit cost (income) and the Net curtailment and settlement losses are recorded in Cost of goods sold and Selling and administrative expenses within the Condensed and Consolidated Statements of Comprehensive Income. The remaining components of Net periodic pension benefit cost (income) are recorded within Other expense (income), net within the Condensed and Consolidated Statements of Comprehensive Income. The Company made employer contributions of $6.8 million and $ 6.6 million during the nine months ended September 30, 2019 and 2018 , respectively, to its defined benefit pension plans. Additional contributions of approximately $3.3 million are expected during the remainder of 2019 . Postretirement Benefits Other Than Pensions The Company sponsors a postretirement ("OPEB") plan that provides for healthcare benefits, and in some instances, life insurance benefits, that cover certain eligible retired employees. The Company funds postretirement benefit obligations principally on a pay-as-you-go basis. Generally, postretirement health benefits are contributory with contributions adjusted annually. Life insurance plans for retirees are primarily noncontributory. Net periodic postretirement benefit cost (income) is included within Other expense (income), net within the Condensed and Consolidated Statements of Comprehensive Income.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair value measurements are based on a framework that utilizes the inputs market participants use to determine the fair value of an asset or liability and establishes a fair value hierarchy to prioritize those inputs. The fair value hierarchy is comprised of three levels that are described below: • Level 1 – Inputs based on quoted prices in active markets for identical assets or liabilities. • Level 2 – Inputs other than Level 1 quoted prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. • Level 3 – Unobservable inputs based on little or no market activity and that are significant to the fair value of the assets and liabilities. The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Observable inputs are obtained from independent sources and can be validated by a third party, whereas unobservable inputs reflect assumptions regarding what a third party would use in pricing an asset or liability based on the best information available under the circumstances. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Assets and liabilities measured at fair value at September 30, 2019 , were as follows: Fair value measurements Total In millions Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Recurring fair value measurements Assets: Investments $ — $ 16.3 $ — $ 16.3 Interest rate swaps — 1.0 — 1.0 Foreign currency contracts — 0.3 — 0.3 Total asset recurring fair value measurements $ — $ 17.6 $ — $ 17.6 Liabilities: Foreign currency contracts $ — $ 1.3 $ — $ 1.3 Deferred compensation and other retirement plans — 21.6 — 21.6 Total liability recurring fair value measurements $ — $ 22.9 $ — $ 22.9 Financial instruments not carried at fair value Total debt $ — $ 1,461.5 $ — $ 1,461.5 Total financial instruments not carried at fair value $ — $ 1,461.5 $ — $ 1,461.5 Assets and liabilities measured at fair value at December 31, 2018 , were as follows: Fair value measurements Total In millions Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Recurring fair value measurements Assets: Investments $ — $ 14.3 $ — $ 14.3 Interest rate swaps — 5.7 — 5.7 Foreign currency contracts — 2.1 — 2.1 Total asset recurring fair value measurements $ — $ 22.1 $ — $ 22.1 Liabilities: Foreign currency contracts $ — $ 0.1 $ — $ 0.1 Deferred compensation and other retirement plans — 19.1 — 19.1 Total liability recurring fair value measurements $ — $ 19.2 $ — $ 19.2 Financial instruments not carried at fair value Total debt $ — $ 1,403.2 $ — $ 1,403.2 Total financial instruments not carried at fair value $ — $ 1,403.2 $ — $ 1,403.2 The Company determines the fair value of its financial assets and liabilities using the following methodologies: • Investments – These instruments include equity mutual funds and corporate bond funds. The fair value is obtained based on observable market prices quoted on public exchanges for similar instruments. • Interest rate swaps – These instruments include interest rate swap contracts related to the Company's variable rate Term Facility. The fair value of the derivative instruments is determined based on quoted prices for the Company's swaps, which is not considered an active market. • Foreign currency contracts – These instruments include foreign currency contracts for non-functional currency balance sheet exposures. The fair value of the foreign currency contracts is determined based on a pricing model that uses spot rates and forward prices from actively quoted currency markets that are readily accessible and observable. • Deferred compensation and other retirement plans – These include obligations related to deferred compensation and other retirement plans adjusted for market performance. The fair value is obtained based on observable market prices quoted on public exchanges for similar instruments. • Debt – These instruments are recorded at cost and include senior notes maturing through 2029. The fair value of the long-term debt instruments is obtained based on observable market prices quoted on public exchanges for similar instruments. The carrying values of Cash and cash equivalents, Restricted cash, Accounts and notes receivable, Accounts payable and Accrued expenses and other current liabilities are a reasonable estimate of their fair value due to the short-term nature of these instruments. The methodologies used by the Company to determine the fair value of its financial assets and liabilities at September 30, 2019 , are the same as those used at December 31, 2018 .

Equity

Equity	9 Months Ended
	Sep. 30, 2019
Stockholders' Equity Note [Abstract]
Equity	EQUITY The changes in the components of Equity for the nine months ended September 30, 2019 , were as follows: Allegion plc shareholders' equity Ordinary shares In millions Total equity Amount Shares Capital in excess of par value Retained earnings Accumulated other comprehensive loss Noncontrolling Balance at December 31, 2018 $ 654.0 $ 0.9 94.6 $ — $ 873.6 $ (223.5 ) $ 3.0 Net earnings 80.3 — — — 80.2 — 0.1 Other comprehensive (loss) income, net (14.7 ) — — — — (15.3 ) 0.6 Share-based compensation activity 7.1 — 0.2 7.1 — — — Dividends to ordinary shareholders ($0.27 per share) (25.5 ) — — — (25.5 ) — — Repurchase of ordinary shares (63.8 ) — (0.7 ) (7.1 ) (56.7 ) — — Balance at March 31, 2019 637.4 0.9 94.1 — 871.6 (238.8 ) 3.7 Net earnings 109.4 — — — 109.3 — 0.1 Other comprehensive income (loss), net 5.1 — — — — 5.7 (0.6 ) Share-based compensation activity 6.8 — 0.1 6.8 — — — Dividends to noncontrolling interests (0.1 ) — — — — — (0.1 ) Dividends to ordinary shareholders ($0.27 per share) (25.2 ) — — — (25.2 ) — — Repurchase of ordinary shares (69.8 ) — (0.7 ) (6.8 ) (63.0 ) — — Balance at June 30, 2019 663.6 0.9 93.5 — 892.7 (233.1 ) 3.1 Net earnings 131.7 — — — 131.6 — 0.1 Other comprehensive loss, net (40.9 ) — — — — (39.9 ) (1.0 ) Share-based compensation activity 4.2 — — 4.2 — — — Dividends to ordinary shareholders ($0.27 per share) (25.1 ) — — — (25.1 ) — — Repurchase of ordinary shares (46.1 ) — (0.5 ) (4.2 ) (41.9 ) — — Other (0.2 ) — — — (0.2 ) — — Balance at September 30, 2019 $ 687.2 $ 0.9 93.0 $ — $ 957.1 $ (273.0 ) $ 2.2 The changes in the components of Equity for the nine months ended September 30, 2018 , were as follows: Allegion plc shareholders' equity Ordinary shares In millions Total equity Amount Shares Capital in excess of par value Retained earnings Accumulated other comprehensive loss Noncontrolling Balance at December 31, 2017 $ 405.5 $ 1.0 95.1 $ 9.1 $ 544.4 $ (152.9 ) $ 3.9 Net earnings 72.4 — — — 72.2 — 0.2 Other comprehensive income, net 27.1 — — — — 26.1 1.0 Share-based compensation activity 6.0 — 0.3 6.0 — — — Dividends to ordinary shareholders ($0.21 per share) (19.9 ) — — — (19.9 ) — — Repurchase of ordinary shares (30.0 ) (0.1 ) (0.4 ) (15.1 ) (14.8 ) — — Balance at March 31, 2018 461.1 0.9 95.0 — 581.9 (126.8 ) 5.1 Net earnings 114.0 — — — 113.9 — 0.1 Other comprehensive loss, net (51.5 ) — — — — (49.2 ) (2.3 ) Share-based compensation activity 5.2 — — 5.2 — — — Dividends to noncontrolling interests (0.2 ) — — — — — (0.2 ) Dividends to ordinary shareholders ($0.21 per share) (20.0 ) — — — (20.0 ) — — Other 0.1 — — — — 0.1 — Balance at June 30, 2018 508.7 0.9 95.0 5.2 675.8 (175.9 ) 2.7 Net earnings 116.1 — — — 116.0 — 0.1 Other comprehensive loss, net (12.8 ) — — — — (12.1 ) (0.7 ) Share-based compensation activity 7.1 0.1 0.1 7.0 — — — Dividends to ordinary shareholders ($0.21 per share) (20.0 ) — — — (20.0 ) — — Other (0.1 ) — — — 0.1 (0.2 ) — Balance at September 30, 2018 $ 599.0 $ 1.0 95.1 $ 12.2 $ 771.9 $ (188.2 ) $ 2.1 During the nine months ended September 30, 2019 and 2018 , the Company paid $179.7 million and $30.0 million , respectively, to repurchase the ordinary shares reflected in the tables above on the open market under a share repurchase authorization previously approved by its Board of Directors. Accumulated Other Comprehensive Loss The changes in Accumulated other comprehensive loss for the nine months ended September 30, 2019 , were as follows: In millions Cash flow hedges Pension and OPEB items Foreign currency items Total December 31, 2018 $ 6.1 $ (123.2 ) $ (106.4 ) $ (223.5 ) Other comprehensive (loss) income before reclassifications (0.5 ) 2.8 (51.2 ) (48.9 ) Amounts reclassified from accumulated other comprehensive loss (a) (6.2 ) 4.7 — (1.5 ) Tax benefit (expense) 1.7 (0.8 ) — 0.9 September 30, 2019 $ 1.1 $ (116.5 ) $ (157.6 ) $ (273.0 ) The changes in Accumulated other comprehensive loss for the nine months ended September 30, 2018 , were as follows: In millions Cash flow hedges Pension and OPEB items Foreign currency items Total December 31, 2017 $ 3.8 $ (107.6 ) $ (49.1 ) $ (152.9 ) Other comprehensive income (loss) before reclassifications 6.3 2.4 (42.2 ) (33.5 ) Amounts reclassified from accumulated other comprehensive loss (a) (3.8 ) 3.3 — (0.5 ) Tax expense (0.7 ) (0.6 ) — (1.3 ) September 30, 2018 $ 5.6 $ (102.5 ) $ (91.3 ) $ (188.2 ) (a) Amounts reclassified from Accumulated other comprehensive loss and recognized into Net earnings related to cash flow hedges are recorded in Cost of goods sold and Interest expense. Amounts reclassified from Accumulated other comprehensive loss and recognized into Net earnings related to pension and OPEB items and foreign currency items are recorded in Other expense (income), net.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-Based Compensation	SHARE-BASED COMPENSATION The Company records share-based compensation awards using a fair value method and recognizes compensation expense for an amount equal to the fair value of the share-based payment issued in its financial statements. The Company’s share-based compensation plans include programs for stock options, restricted stock units ("RSUs"), performance share units ("PSUs") and deferred compensation. Compensation Expense Share-based compensation expense is included in Cost of goods sold and Selling and administrative expenses within the Condensed and Consolidated Statements of Comprehensive Income. The following table summarizes the expenses recognized for the three and nine months ended September 30 : Three months ended Nine months ended In millions 2019 2018 2019 2018 Stock options $ 0.4 $ 1.0 $ 3.2 $ 3.9 RSUs 1.6 2.6 8.0 8.1 PSUs 1.7 1.1 5.1 4.2 Deferred compensation (0.1 ) 0.6 2.1 1.2 Pre-tax expense 3.6 5.3 18.4 17.4 Tax benefit (0.5 ) (1.0 ) (2.3 ) (1.9 ) After-tax expense $ 3.1 $ 4.3 $ 16.1 $ 15.5 Stock Options / RSUs Eligible participants may receive (i) stock options, (ii) RSUs or (iii) a combination of both stock options and RSUs. Grants issued during the nine months ended September 30 were as follows: 2019 2018 Number Weighted- Number Weighted- Stock options 195,675 $ 19.58 160,849 $ 21.29 RSUs 129,835 $ 90.91 121,928 $ 84.86 The fair value of each of the Company's stock option and RSU awards is expensed on a straight-line basis over the required service period, which is generally the three-year vesting period. However, for stock options and RSUs granted to retirement eligible employees, the Company recognizes expense for the fair value at the grant date. The average fair value of the stock options granted is determined using the Black-Scholes option-pricing model. The following assumptions were used during the nine months ended September 30 : 2019 2018 Dividend yield 1.23 % 0.97 % Volatility 21.44 % 22.38 % Risk-free rate of return 2.53 % 2.75 % Expected life (in years) 6.0 6.0 Expected volatility is based on the weighted-average combination of the Company's historic volatility and of the implied volatility of a group of the Company’s peers. The risk-free rate of return is based on the yield curve of a zero-coupon U.S. Treasury bond on the date the award is granted with a maturity equal to the expected term of the award. The expected life of the Company’s stock option awards is derived from the simplified approach based on the weighted-average time to vest and the remaining contractual term and represents the period of time that awards are expected to be outstanding. Performance Shares The Company has a Performance Share Program ("PSP") for key employees which provides awards in the form of PSUs based on performance against pre-established objectives. The annual target award level is expressed as a number of the Company's ordinary shares. All PSUs are settled in the form of ordinary shares unless deferred. The 2018 grant is the last eligible grant to defer under the plan. During the nine months ended September 30, 2019 , the Company granted PSUs with a maximum award level of approximately 0.1 million shares. In February 2017, 2018 and 2019, the Company’s Compensation Committee granted PSUs that were earned based 50% upon a performance condition, measured at each reporting period by earnings per share ("EPS") performance in relation to pre-established targets set by the Compensation Committee, and 50% upon a market condition, measured by the Company’s relative total shareholder return ("TSR") against the S&P 400 Capital Goods Index over a three-year performance period. The fair values of the market conditions are estimated using a Monte Carlo Simulation approach in a risk-neutral framework to model future stock price movements based upon historical volatility, risk-free rates of return and correlation matrix. Deferred Compensation Prior to 2019, the Company allowed key employees to defer a portion of their eligible granted performance shares and/or compensation into a number of investment choices including its ordinary share equivalents. Any amounts invested in ordinary share equivalents will be settled in ordinary shares of the Company at the time of distribution.

Restructuring Activities

Restructuring Activities	9 Months Ended
	Sep. 30, 2019
Restructuring Charges [Abstract]
Restructuring Activities	RESTRUCTURING ACTIVITIES During the three months ended September 30, 2019 and 2018 , the Company recorded $4.4 million and $2.7 million , respectively, of expenses associated with restructuring activities. During the nine months ended September 30, 2019 and 2018 , the Company recorded $14.2 million and $4.1 million , respectively, of expenses associated with restructuring activities. These expenses are included within Cost of goods sold and Selling and administrative expenses within the Condensed and Consolidated Statements of Comprehensive Income. Included within these current year restructuring expenses are approximately $3.6 million during the three months ended September 30, 2019 , and $7.2 million during the nine months ended September 30, 2019 , relating to the Company's closure of its production facility in Turkey in June 2019. The facility was closed to help streamline the Company's operational footprint in the EMEIA region, and these expenses are primarily related to severance and other employee separation costs. During the three months ended September 30, 2019 , the Company committed to a plan to sell certain of the production assets previously utilized in its Turkish operations. As a result, these assets were reclassified to Assets held for sale within the Condensed and Consolidated Balance Sheet at September 30, 2019 . The changes in the restructuring reserve during the nine months ended September 30, 2019 , were as follows: In millions Total December 31, 2018 $ 2.1 Additions, net of reversals 14.2 Cash and non-cash uses (12.9 ) September 30, 2019 $ 3.4 The majority of the costs accrued as of September 30, 2019 , are expected to be paid within one year. The Company also incurred other non-qualified restructuring expenses of $0.4 million during the three months ended September 30, 2019 , and $4.5 million during the nine months ended September 30, 2019 , in conjunction with restructuring plans, which represent costs that are directly attributable to restructuring activities, but that do not fall into the severance, exit or disposal category. All of the non-qualified restructuring expenses incurred during the three months ended September 30, 2019 , and approximately $3.1 million during the nine months ended September 30, 2019 , related to the closure of the Company's production facility in Turkey discussed above. The Company anticipates additional future expenses in the fourth quarter of 2019 related to the closure of its Turkey operations and associated restructuring activity. These future costs, including what are anticipated to be classified as both qualified and non-qualified restructuring expenses, are not expected to exceed $5 million .

Other, Net

Other, Net	9 Months Ended
	Sep. 30, 2019
Other Income and Expenses [Abstract]
Other, Net	OTHER EXPENSE (INCOME), NET The components of Other expense (income), net for the three and nine months ended September 30 were as follows: Three months ended Nine months ended In millions 2019 2018 2019 2018 Interest income $ (0.4 ) $ (0.4 ) $ (1.1 ) $ (0.7 ) Foreign currency exchange loss (gain) 0.8 (0.8 ) 1.1 (1.0 ) Loss (earnings) from equity method investments 0.1 — 0.5 (0.1 ) Net periodic pension and postretirement benefit cost (income), less service cost 1.4 (0.7 ) 3.2 (2.3 ) Other 0.1 — (2.1 ) 0.2 Other expense (income), net $ 2.0 $ (1.9 ) $ 1.6 $ (3.9 )

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The effective income tax rates for the three months ended September 30, 2019 and 2018 , were 12.5% and 10.8% , respectively. The increase in the effective tax rate compared to 2018 is primarily due to a tax benefit recognized in 2018 related to a true-up of the 2017 U.S. Tax Cuts and Jobs Act ( the "Tax Reform Act") provisional tax computation, which is partially offset by a favorable year-over-year change in amounts recognized for uncertain tax positions. The effective income tax rates for the nine months ended September 30, 2019 and 2018 were 14.9% and 13.1% , respectively. The increase in the effective tax rate compared to 2018 is primarily due to a tax benefit recognized in 2018 related to a true-up of the 2017 Tax Reform Act provisional tax computation and an unfavorable mix of income earned in higher tax rate jurisdictions, which are partially offset by a favorable year-over-year change in amounts recognized for uncertain tax positions.

Earnings Per Share (EPS)

Earnings Per Share (EPS)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share (EPS)	EARNINGS PER SHARE (EPS) Basic EPS is calculated by dividing Net earnings attributable to Allegion plc by the weighted-average number of ordinary shares outstanding for the applicable period. Diluted EPS is calculated after adjusting the denominator of the basic EPS calculation for the effect of all potentially dilutive ordinary shares, which in the Company’s case, includes shares issuable under share-based compensation plans. The following table summarizes the weighted-average number of ordinary shares outstanding for basic and diluted EPS calculations for the three and nine months ended September 30 : Three months ended Nine months ended In millions 2019 2018 2019 2018 Weighted-average number of basic shares 93.3 95.1 93.8 95.1 Shares issuable under incentive stock plans 0.7 0.7 0.7 0.7 Weighted-average number of diluted shares 94.0 95.8 94.5 95.8 At September 30, 2019 , 0.2 million stock options were excluded from the computation of weighted-average diluted shares outstanding because the effect of including these shares would have been anti-dilutive.

Net Revenues

Net Revenues	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Net Revenues	NET REVENUES Net revenues are recognized based on the satisfaction of performance obligations under the terms of a contract. A performance obligation is a promise in a contract to transfer control of a distinct product or to provide a service, or a bundle of products or services, to a customer, and is the unit of account under ASC Topic 606, "Revenue from Contracts with Customers" (ASC 606). The Company has two principal revenue streams, tangible product sales and services. Approximately 99% of consolidated Net revenues involve contracts with a single performance obligation, which is the transfer of control of a product or bundle of products to a customer. Transfer of control typically occurs when goods are shipped from the Company's facilities or at other predetermined control transfer points (for instance, destination terms). Net revenues are measured as the amount of consideration expected to be received in exchange for transferring control of the products and takes into account variable consideration, such as sales incentive programs including discounts and volume rebates. The existence of these programs does not preclude revenue recognition but does require the Company's best estimate of the variable consideration to be made based on expected activity, as these items are reserved for as a deduction to Net revenues over time based on the Company's historical rates of providing these incentives and annual forecasted sales volumes. The Company also offers a standard warranty with most product sales, and the value of such warranty is included in the contractual price. The corresponding expense of the warranty obligation is accrued as a liability (see Note 20). The Company's remaining Net revenues involve services, including installation and consulting. Unlike the single performance obligation to ship a product or bundle of products, revenue recognition related to services is delayed until the service performance obligations are satisfied. In some instances, customer acceptance provisions are included in sales arrangements to give the buyer the ability to ensure the service meets the criteria established in the order. In these instances, revenue recognition is deferred until the performance obligations are satisfied, which could include acceptance terms specified in the arrangement being fulfilled through customer acceptance or a demonstration that established criteria have been satisfied. During the nine months ended September 30, 2019 and 2018 , no adjustments were recorded related to performance obligations satisfied in previous periods. The Company applies the practical expedients allowed under ASC 606 to omit the disclosure of remaining performance obligations for contracts with an original expected duration of one year or less and for contracts where the Company has the right to invoice for performance completed to date. The transaction price is not adjusted for the effects of a significant financing component, as the time period between control transfer of goods and services is less than one year. Sales, value-added and other similar taxes collected by the Company are excluded from Net revenues. The Company has also elected to account for shipping and handling activities that occur after control of the related goods transfers as fulfillment activities instead of performance obligations. These activities are included in Cost of goods sold in the Condensed and Consolidated Statements of Comprehensive Income. The Company’s payment terms are generally consistent with the industries in which its businesses operate. The following tables show the Company's Net revenues related to both tangible product sales and services for the three and nine months ended September 30, 2019 and 2018 , respectively, disaggregated by business segment. Net revenues are shown by tangible product sales and services, as contract terms, conditions and economic factors affecting the nature, amount, timing and uncertainty around revenue recognition and cash flows are substantially similar within each of these two principal revenue streams: Three months ended September 30, 2019 Nine months ended September 30, 2019 In millions Americas EMEIA Asia Pacific Consolidated Americas EMEIA Asia Pacific Consolidated Net revenues Products $ 567.8 $ 130.5 $ 40.7 $ 739.0 $ 1,588.2 $ 406.3 $ 117.2 $ 2,111.7 Services — 7.3 2.0 9.3 — 16.6 6.2 22.8 Total Net revenues $ 567.8 $ 137.8 $ 42.7 $ 748.3 $ 1,588.2 $ 422.9 $ 123.4 $ 2,134.5 Three months ended September 30, 2018 Nine months ended September 30, 2018 In millions Americas EMEIA Asia Pacific Consolidated Americas EMEIA Asia Pacific Consolidated Net revenues Products $ 530.1 $ 129.5 $ 44.8 $ 704.4 $ 1,495.9 $ 419.6 $ 98.7 $ 2,014.2 Services — 4.9 2.2 7.1 — 12.9 2.2 15.1 Total Net revenues $ 530.1 $ 134.4 $ 47.0 $ 711.5 $ 1,495.9 $ 432.5 $ 100.9 $ 2,029.3 As of September 30, 2019 , neither the contract assets related to the Company's right to consideration for work completed but not billed nor the contract liabilities associated with contract revenue were material. As a practical expedient, the Company recognizes incremental costs of obtaining a contract, if any, as an expense when incurred if the amortization period of the asset would have been one year or less. The Company does not have any costs to obtain or fulfill a contract that are capitalized under ASC 606.

Business Segment Information

Business Segment Information	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Business Segment Information	BUSINESS SEGMENT INFORMATION The Company classifies its business into the following three reportable segments based on industry and market focus: Americas, EMEIA and Asia Pacific. The Company largely evaluates performance based on Segment operating income and Segment operating margins. Segment operating income is the measure of profit and loss that the Company’s chief operating decision maker uses to evaluate the financial performance of the business and as the basis for resource allocation, performance reviews and compensation. For these reasons, the Company believes that Segment operating income represents the most relevant measure of segment profit and loss. The Company’s chief operating decision maker may exclude certain charges or gains, such as corporate charges and other special charges, from Operating income to arrive at a Segment operating income that is a more meaningful measure of profit and loss upon which to base operating decisions. The Company defines Segment operating margin as Segment operating income as a percentage of the segment's Net revenues. A summary of operations by reportable segment for the three and nine months ended September 30 was as follows: Three months ended Nine months ended In millions 2019 2018 2019 2018 Net revenues Americas $ 567.8 $ 530.1 $ 1,588.2 $ 1,495.9 EMEIA 137.8 134.4 422.9 432.5 Asia Pacific 42.7 47.0 123.4 100.9 Total $ 748.3 $ 711.5 $ 2,134.5 $ 2,029.3 Segment operating income Americas $ 175.6 $ 153.8 $ 457.7 $ 415.5 EMEIA 7.5 7.6 19.9 27.3 Asia Pacific 4.1 1.5 3.9 0.8 Total 187.2 162.9 481.5 443.6 Reconciliation to Operating income Unallocated corporate expense (19.1 ) (20.6 ) (59.7 ) (59.2 ) Operating income 168.1 142.3 421.8 384.4 Reconciliation to earnings before income taxes Interest expense 15.6 14.0 42.7 40.3 Other expense (income), net 2.0 (1.9 ) 1.6 (3.9 ) Earnings before income taxes $ 150.5 $ 130.2 $ 377.5 $ 348.0

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES The Company is involved in various litigations, claims and administrative proceedings, including those related to environmental and product warranty matters. Amounts recorded for identified contingent liabilities are estimates, which are reviewed periodically and adjusted to reflect additional information when it becomes available. Subject to the uncertainties inherent in estimating future costs for contingent liabilities, except as expressly set forth in this note, management believes that any liability which may result from these legal matters would not have a material adverse effect on the financial condition, results of operations, liquidity or cash flows of the Company. Environmental Matters The Company is dedicated to an environmental program to reduce the utilization and generation of hazardous materials during the manufacturing process and to remediate identified environmental concerns. As to the latter, the Company is currently engaged in site investigations and remediation activities to address environmental cleanup from past operations at current and former production facilities. The Company regularly evaluates its remediation programs and considers alternative remediation methods that are in addition to, or in replacement of, those currently utilized by the Company based upon enhanced technology and regulatory changes. Changes to the Company's remediation programs may result in increased expenses and increased environmental reserves. The Company is sometimes a party to environmental lawsuits and claims and has received notices of potential violations of environmental laws and regulations from the U.S. Environmental Protection Agency and similar state authorities. It has also been identified as a potentially responsible party ("PRP") for cleanup costs associated with off-site waste disposal at federal Superfund and state remediation sites. For all such sites, there are other PRPs and, in most instances, the Company’s involvement is minimal. In estimating its liability, the Company has assumed it will not bear the entire cost of remediation of any site to the exclusion of other PRPs who may be jointly and severally liable. The ability of other PRPs to participate has been taken into account, based on our understanding of the parties’ financial condition and probable contributions on a per site basis. Additional lawsuits and claims involving environmental matters are likely to arise from time to time in the future. During the three months ended September 30, 2019 and 2018 , the Company incurred $ 0.6 million and $ 0.4 million , respectively, of expenses for environmental remediation at sites presently or formerly owned or leased by the Company. During the nine months ended September 30, 2019 and 2018 , the Company incurred $1.6 million and $1.7 million , respectively, of expenses for environmental remediation at sites presently or formerly owned or leased by the Company. As of September 30, 2019 and December 31, 2018 , the Company has recorded reserves for environmental matters of $ 19.8 million and $ 22.6 million , respectively. The total reserve at September 30, 2019 and December 31, 2018 , included $ 4.5 million and $ 6.3 million , respectively, related to remediation of sites previously disposed by the Company. Environmental reserves are classified as Accrued expenses and other current liabilities or Other noncurrent liabilities within the Condensed and Consolidated Balance Sheets based on their expected term. The Company's total current environmental reserve at September 30, 2019 and December 31, 2018 , was $ 4.4 million and $ 5.6 million , respectively, and the remainder is classified as noncurrent. Given the evolving nature of environmental laws, regulations and technology, the ultimate cost of future compliance is uncertain. Warranty Liability Standard product warranty accruals are recorded at the time of sale and are estimated based upon product warranty terms and historical experience. The Company assesses the adequacy of its liabilities and will make adjustments as necessary based on known or anticipated warranty claims, or as new information becomes available. The changes in the standard product warranty liability for the nine months ended September 30 were as follows: In millions 2019 2018 Balance at beginning of period $ 14.5 $ 14.1 Reductions for payments (6.6 ) (5.9 ) Accruals for warranties issued during the current period 8.4 6.1 Changes to accruals related to preexisting warranties (0.4 ) (0.1 ) Acquisitions — 0.5 Currency translation (0.2 ) (0.1 ) Balance at end of period $ 15.7 $ 14.6 Standard product warranty liabilities are classified as Accrued expenses and other current liabilities within the Condensed and Consolidated Balance Sheets.

Guarantor Financial Information

Guarantor Financial Information	9 Months Ended
	Sep. 30, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information of Parent Company Only Disclosure	GUARANTOR INFORMATION Allegion US Hold Co is the issuer of the 3.200% Senior Notes and 3.550% Senior Notes and is the guarantor of the 3.500% Senior Notes (all three senior notes, collectively, the "Senior Notes"). Allegion plc is the issuer of the 3.500% Senior Notes and is the guarantor of the 3.200% Senior Notes and 3.550% Senior Notes. The following condensed and consolidated financial information of Allegion plc, Allegion US Hold Co, and the other Allegion subsidiaries that are not guarantors (the "Other Subsidiaries") on a combined basis as of September 30, 2019 and December 31, 2018 , and for the three and nine months ended September 30, 2019 and 2018 , is being presented in order to meet the reporting requirements under the Senior Notes indentures and Rule 3-10 of Regulation S-X. In accordance with Rule 3-10(d) of Regulation S-X, separate financial statements for the Issuers, Allegion plc and Allegion US Hold Co, whom are guarantors, are not required to be filed with the SEC as the subsidiary debt issuers are directly or indirectly 100% owned by the Parent, whom is a guarantor, and the guarantees are full and unconditional and joint and several. Condensed and Consolidated Statement of Comprehensive Income For the three months ended September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 748.3 $ — $ 748.3 Cost of goods sold — — 412.8 — 412.8 Selling and administrative expenses 1.6 — 165.8 — 167.4 Operating (loss) income (1.6 ) — 169.7 — 168.1 Equity earnings (loss) in affiliates, net of tax 145.2 88.9 — (234.1 ) — Interest expense 9.5 6.0 0.1 — 15.6 Intercompany interest and fees 2.5 27.0 (29.5 ) — — Other expense, net — — 2.0 — 2.0 Earnings (loss) before income taxes 131.6 55.9 197.1 (234.1 ) 150.5 Provision (benefit) for income taxes — (8.1 ) 26.9 — 18.8 Net earnings (loss) 131.6 64.0 170.2 (234.1 ) 131.7 Less: Net earnings attributable to noncontrolling interests — — 0.1 — 0.1 Net earnings (loss) attributable to Allegion plc $ 131.6 $ 64.0 $ 170.1 $ (234.1 ) $ 131.6 Total comprehensive income (loss) $ 91.7 $ 63.0 $ 130.2 $ (194.1 ) $ 90.8 Less: Total comprehensive loss attributable to noncontrolling interests — — (0.9 ) — (0.9 ) Total comprehensive income (loss) attributable to Allegion plc $ 91.7 $ 63.0 $ 131.1 $ (194.1 ) $ 91.7 Condensed and Consolidated Statement of Comprehensive Income For the nine months ended September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 2,134.5 $ — $ 2,134.5 Cost of goods sold — — 1,201.4 — 1,201.4 Selling and administrative expenses 4.7 — 506.6 — 511.3 Operating (loss) income (4.7 ) — 426.5 — 421.8 Equity earnings (loss) in affiliates, net of tax 354.2 196.9 — (551.1 ) — Interest expense 24.2 18.3 0.2 — 42.7 Intercompany interest and fees 4.2 79.8 (84.0 ) — — Other income, net — — 1.6 — 1.6 Earnings (loss) before income taxes 321.1 98.8 508.7 (551.1 ) 377.5 Provision (benefit) for income taxes — (24.1 ) 80.2 — 56.1 Net earnings (loss) 321.1 122.9 428.5 (551.1 ) 321.4 Less: Net earnings attributable to noncontrolling interests — — 0.3 — 0.3 Net earnings (loss) attributable to Allegion plc $ 321.1 $ 122.9 $ 428.2 $ (551.1 ) $ 321.1 Total comprehensive income (loss) $ 271.6 $ 118.4 $ 381.4 $ (500.5 ) $ 270.9 Less: Total comprehensive loss attributable to noncontrolling interests — — (0.7 ) — (0.7 ) Total comprehensive income (loss) attributable to Allegion plc $ 271.6 $ 118.4 $ 382.1 $ (500.5 ) $ 271.6 Condensed and Consolidated Statement of Comprehensive Income For the three months ended September 30, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 711.5 $ — $ 711.5 Cost of goods sold — — 402.1 — 402.1 Selling and administrative expenses 1.3 — 165.8 — 167.1 Operating (loss) income (1.3 ) — 143.6 — 142.3 Equity earnings (loss) in affiliates, net of tax 124.5 73.2 — (197.7 ) — Interest expense 7.2 6.4 0.4 — 14.0 Intercompany interest and fees — 26.3 (26.3 ) — — Other income, net — — (1.9 ) — (1.9 ) Earnings (loss) before income taxes 116.0 40.5 171.4 (197.7 ) 130.2 Provision (benefit) for income taxes — (7.7 ) 21.8 — 14.1 Net earnings (loss) 116.0 48.2 149.6 (197.7 ) 116.1 Less: Net earnings attributable to noncontrolling interests — — 0.1 — 0.1 Net earnings (loss) attributable to Allegion plc $ 116.0 $ 48.2 $ 149.5 $ (197.7 ) $ 116.0 Total comprehensive income (loss) $ 103.9 $ 48.1 $ 142.5 $ (191.2 ) $ 103.3 Less: Total comprehensive loss attributable to noncontrolling interests — — (0.6 ) — (0.6 ) Total comprehensive income (loss) attributable to Allegion plc $ 103.9 $ 48.1 $ 143.1 $ (191.2 ) $ 103.9 Condensed and Consolidated Statement of Comprehensive Income For the nine months ended September 30, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 2,029.3 $ — $ 2,029.3 Cost of goods sold — — 1,156.5 — 1,156.5 Selling and administrative expenses 4.6 — 483.8 — 488.4 Operating (loss) income (4.6 ) — 389.0 — 384.4 Equity earnings (loss) in affiliates, net of tax 327.0 146.4 — (473.4 ) — Interest expense 20.3 19.4 0.6 — 40.3 Intercompany interest and fees — 78.2 (78.2 ) — — Other income, net — — (3.9 ) — (3.9 ) Earnings (loss) before income taxes 302.1 48.8 470.5 (473.4 ) 348.0 Provision (benefit) for income taxes — (20.0 ) 65.5 — 45.5 Net earnings (loss) 302.1 68.8 405.0 (473.4 ) 302.5 Less: Net earnings attributable to noncontrolling interests — — 0.4 — 0.4 Net earnings (loss) attributable to Allegion plc $ 302.1 $ 68.8 $ 404.6 $ (473.4 ) $ 302.1 Total comprehensive income (loss) $ 266.9 $ 70.7 $ 365.8 $ (438.1 ) $ 265.3 Less: Total comprehensive loss attributable to noncontrolling interests — — (1.6 ) — (1.6 ) Total comprehensive income (loss) attributable to Allegion plc $ 266.9 $ 70.7 $ 367.4 $ (438.1 ) $ 266.9 Condensed and Consolidated Balance Sheet September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Current assets: Cash and cash equivalents $ 16.6 $ 2.4 $ 213.9 $ — $ 232.9 Restricted cash — — 3.4 — 3.4 Accounts and notes receivable, net — — 367.5 — 367.5 Inventories — — 293.9 — 293.9 Other current assets 1.2 25.8 19.8 (14.3 ) 32.5 Assets held for sale — — 2.9 — 2.9 Accounts and notes receivable affiliates — 510.1 408.1 (918.2 ) — Total current assets 17.8 538.3 1,309.5 (932.5 ) 933.1 Investment in affiliates 1,571.6 873.7 — (2,445.3 ) — Property, plant and equipment, net — — 281.9 — 281.9 Intangible assets, net — — 1,372.1 — 1,372.1 Notes receivable affiliates 31.2 1,404.8 2,868.4 (4,304.4 ) — Other noncurrent assets 4.8 56.3 217.2 — 278.3 Total assets $ 1,625.4 $ 2,873.1 $ 6,049.1 $ (7,682.2 ) $ 2,865.4 Current liabilities: Accounts payable and other current liabilities $ 3.8 $ 13.5 $ 488.1 $ (14.3 ) $ 491.1 Short-term borrowings and current maturities of long-term debt — — 0.1 — 0.1 Accounts and notes payable affiliates 4.3 403.8 510.1 (918.2 ) — Total current liabilities 8.1 417.3 998.3 (932.5 ) 491.2 Long-term debt 632.8 793.5 0.7 — 1,427.0 Notes payable affiliates 297.0 2,571.4 1,436.0 (4,304.4 ) — Other noncurrent liabilities 2.5 6.1 251.4 — 260.0 Total liabilities 940.4 3,788.3 2,686.4 (5,236.9 ) 2,178.2 Equity: Total shareholders' equity (deficit) 685.0 (915.2 ) 3,360.5 (2,445.3 ) 685.0 Noncontrolling interests — — 2.2 — 2.2 Total equity (deficit) 685.0 (915.2 ) 3,362.7 (2,445.3 ) 687.2 Total liabilities and equity $ 1,625.4 $ 2,873.1 $ 6,049.1 $ (7,682.2 ) $ 2,865.4 Condensed and Consolidated Balance Sheet December 31, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Current assets: Cash and cash equivalents $ 4.2 $ 1.0 $ 278.6 $ — $ 283.8 Restricted cash — — 6.8 — 6.8 Accounts and notes receivable, net — — 324.9 — 324.9 Inventories — — 280.3 — 280.3 Other current assets 0.5 33.7 19.1 (18.3 ) 35.0 Assets held for sale — — 0.8 — 0.8 Accounts and notes receivable affiliates — 816.2 369.8 (1,186.0 ) — Total current assets 4.7 850.9 1,280.3 (1,204.3 ) 931.6 Investment in affiliates 1,265.8 718.2 — (1,984.0 ) — Property, plant and equipment, net — — 276.7 — 276.7 Intangible assets, net — — 1,430.1 — 1,430.1 Notes receivable affiliates 30.8 1,061.2 2,553.4 (3,645.4 ) — Other noncurrent assets 4.0 61.2 106.6 — 171.8 Total assets $ 1,305.3 $ 2,691.5 $ 5,647.1 $ (6,833.7 ) $ 2,810.2 Current liabilities: Accounts payable and other current liabilities $ 2.0 $ 6.8 $ 495.0 $ (18.3 ) $ 485.5 Short-term borrowings and current maturities of long-term debt 35.0 — 0.3 — 35.3 Accounts and notes payable affiliates 0.3 369.5 816.2 (1,186.0 ) — Total current liabilities 37.3 376.3 1,311.5 (1,204.3 ) 520.8 Long-term debt 615.8 792.8 0.9 — 1,409.5 Notes payable affiliates — 2,553.4 1,092.0 (3,645.4 ) — Other noncurrent liabilities 1.2 5.5 219.2 — 225.9 Total liabilities 654.3 3,728.0 2,623.6 (4,849.7 ) 2,156.2 Equity: Total shareholders' equity (deficit) 651.0 (1,036.5 ) 3,020.5 (1,984.0 ) 651.0 Noncontrolling interests — — 3.0 — 3.0 Total equity (deficit) 651.0 (1,036.5 ) 3,023.5 (1,984.0 ) 654.0 Total liabilities and equity $ 1,305.3 $ 2,691.5 $ 5,647.1 $ (6,833.7 ) $ 2,810.2 Condensed and Consolidated Statement of Cash Flows For the nine months ended September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net cash (used in) provided by operating activities $ (10.4 ) $ (43.2 ) $ 410.9 $ (77.9 ) $ 279.4 Cash flows from investing activities: Capital expenditures — — (49.4 ) — (49.4 ) Acquisition of and equity investments in businesses, net of cash acquired — — (4.6 ) — (4.6 ) Other investing activities, net — (1.5 ) (2.2 ) 1.7 (2.0 ) Net cash (used in) provided by investing activities — (1.5 ) (56.2 ) 1.7 (56.0 ) Cash flows from financing activities: Debt repayments, net (17.5 ) — (0.5 ) — (18.0 ) Debt issuance costs (3.0 ) — — — (3.0 ) Net inter-company proceeds (payments) 296.6 46.0 (342.6 ) — — Dividends paid — — (77.9 ) 77.9 — Dividends paid to shareholders (75.5 ) — — — (75.5 ) Repurchase of ordinary shares (179.7 ) — — — (179.7 ) Other financing activities, net 1.9 0.1 1.5 (1.7 ) 1.8 Net cash provided by (used in) financing activities 22.8 46.1 (419.5 ) 76.2 (274.4 ) Effect of exchange rate changes on cash, cash equivalents and restricted cash — — (3.3 ) — (3.3 ) Net increase (decrease) in cash, cash equivalents and restricted cash 12.4 1.4 (68.1 ) — (54.3 ) Cash, cash equivalents and restricted cash - beginning of period 4.2 1.0 285.4 — 290.6 Cash, cash equivalents and restricted cash - end of period $ 16.6 $ 2.4 $ 217.3 $ — $ 236.3 Condensed and Consolidated Statement of Cash Flows For the nine months ended September 30, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net cash provided by (used in) operating activities $ 135.4 $ (68.5 ) $ 402.5 $ (209.0 ) $ 260.4 Cash flows from investing activities: Capital expenditures — — (31.8 ) — (31.8 ) Acquisition of and equity investments in businesses, net of cash acquired — (247.1 ) (128.7 ) — (375.8 ) Other investing activities, net — — (1.1 ) — (1.1 ) Net cash used in investing activities — (247.1 ) (161.6 ) — (408.7 ) Cash flows from financing activities: Debt repayments, net (26.3 ) — (1.1 ) — (27.4 ) Net inter-company (payments) proceeds (22.0 ) 329.3 (307.3 ) — — Dividends paid — — (209.0 ) 209.0 — Dividends paid to shareholders (59.6 ) — — — (59.6 ) Repurchase of ordinary shares (30.0 ) — — — (30.0 ) Other financing activities, net 2.4 — (2.3 ) — 0.1 Net cash (used in) provided by financing activities (135.5 ) 329.3 (519.7 ) 209.0 (116.9 ) Effect of exchange rate changes on cash and cash equivalents — — (4.5 ) — (4.5 ) Net (decrease) increase in cash and cash equivalents (0.1 ) 13.7 (283.3 ) — (269.7 ) Cash and cash equivalents - beginning of period 0.7 0.3 465.2 — 466.2 Cash and cash equivalents - end of period $ 0.6 $ 14.0 $ 181.9 $ — $ 196.5

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Recently Adopted Accounting Pronouncements: In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)." ASU 2016-02 requires the identification of arrangements that should be accounted for as leases. In general, for lease arrangements of a twelve-month term or greater, these arrangements are to be recognized as assets and liabilities on the balance sheet of the lessee. Under ASU 2016-02, a right-of-use asset and lease obligation are recorded for all leases, whether operating or financing, while the statement of comprehensive income reflects lease expense for operating leases and amortization/interest expense for financing leases. In July 2018, the FASB issued ASU 2018-10, "Codification Improvements to Topic 842 (Leases)", which provided narrow amendments to clarify how to apply certain aspects of ASU 2016-02, and ASU 2018-11, "Leases (Topic 842): Targeted Improvements", which provided an additional transition method by allowing entities to initially apply ASU 2016-02, and subsequent related standards, at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. In March 2019, the FASB issued ASU 2019-01, "Leases (Topic 842): Codification Improvements", which exempted entities from having to provide certain interim disclosures in the fiscal year of adoption of ASU 2016-02 and its related standards. These ASUs (collectively “ASC 842”) were effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. Accordingly, the Company adopted ASC 842 on January 1, 2019, utilizing the transition method allowed per ASU 2018-11. Comparative period financial information has not been adjusted for the effects of adopting ASC 842, and no cumulative-effect adjustment was required to the opening balance of Retained earnings on the adoption date. The Company has also made updates to its systems, policies and internal controls over financial reporting related to the adoption of ASC 842 on January 1, 2019. See Note 9 to the Condensed and Consolidated Financial Statements for further information and expanded disclosure related to the Company's lease portfolio. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, "Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." ASU 2016-13 and its subsequent related updates introduces an approach based on expected losses to estimate credit losses on certain types of financial instruments and replaces the current incurred loss impairment model. ASU 2016-13 and its subsequent related updates will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. The Company is assessing what impact ASU 2016-13 and its subsequent related updates will have on the Condensed and Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-15, "Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract." The new guidance aligns the requirements for capitalizing implementation costs incurred in a cloud-based hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. The Company is assessing what impact ASU 2018-15 will have on the Condensed and Consolidated Financial Statements.

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2019
Inventory, Net [Abstract]
Major Classes Of Inventory	The major classes of inventory were as follows: In millions September 30, December 31, Raw materials $ 127.0 $ 117.2 Work-in-process 34.6 34.4 Finished goods 132.3 128.7 Total $ 293.9 $ 280.3

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in carrying amount of goodwill	The changes in the carrying amount of goodwill for the nine months ended September 30, 2019 , were as follows: In millions Americas EMEIA Asia Pacific Total December 31, 2018 (gross) $ 486.1 $ 767.1 $ 115.3 $ 1,368.5 Accumulated impairment — (478.6 ) (6.9 ) (485.5 ) December 31, 2018 (net) 486.1 288.5 108.4 883.0 Acquisitions and adjustments (a) (1.3 ) 2.7 (4.4 ) (3.0 ) Currency translation — (13.7 ) (5.9 ) (19.6 ) September 30, 2019 (net) $ 484.8 $ 277.5 $ 98.1 $ 860.4 (a) In 2019, the Company made reclassifications to goodwill across all segments related to a change in how revenue is managed for a specific immaterial product line where revenue previously managed in the Asia Pacific segment is now being managed in the Americas and EMEIA segments.

Intangible Assets (Tables)

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets, net of Goodwill	The gross amount of the Company’s intangible assets and related accumulated amortization were as follows: September 30, 2019 December 31, 2018 In millions Gross carrying amount Accumulated amortization Net carrying amount Gross carrying amount Accumulated amortization Net carrying amount Completed technologies/patents $ 58.3 $ (17.4 ) $ 40.9 $ 59.4 $ (14.2 ) $ 45.2 Customer relationships 403.2 (99.6 ) 303.6 419.3 (88.5 ) 330.8 Trade names (finite-lived) 80.2 (47.2 ) 33.0 84.9 (47.4 ) 37.5 Other 14.9 (7.4 ) 7.5 9.5 (6.5 ) 3.0 Total finite-lived intangible assets 556.6 $ (171.6 ) 385.0 573.1 $ (156.6 ) 416.5 Trade names (indefinite-lived) 126.7 126.7 130.6 130.6 Total $ 683.3 $ 511.7 $ 703.7 $ 547.1

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The allocation of the aggregate purchase price to assets acquired and liabilities assumed for the acquisitions listed above was as follows: In millions Accounts receivable, net $ 28.9 Inventories 28.5 Other current assets 1.3 Property, plant and equipment, net 27.6 Goodwill 139.8 Intangible assets, net 204.3 Other noncurrent assets 2.0 Accounts payable (11.1 ) Accrued expenses and other current liabilities (35.7 ) Other noncurrent liabilities (11.1 ) Total $ 374.5
Business Acquisition, Pro Forma Information	The following unaudited pro forma financial information for the three and nine months ended September 30, 2018, reflects the consolidated results of operations of the Company as if these acquisitions had taken place on January 1, 2017: In millions Three months ended September 30, 2018 Nine months ended September 30, 2018 Net revenues $ 711.5 $ 2,071.8 Net earnings attributable to Allegion plc 119.3 313.1

Debt and Credit Facilities (Tab

Debt and Credit Facilities (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of Debt	Long-term debt and other borrowings consisted of the following: In millions September 30, December 31, Term Facility $ 238.8 $ 656.3 Revolving Facility — — 3.200% Senior Notes due 2024 400.0 400.0 3.550% Senior Notes due 2027 400.0 400.0 3.500% Senior Notes due 2029 400.0 — Other debt 0.7 1.2 Total borrowings outstanding 1,439.5 1,457.5 Less discounts and debt issuance costs, net (12.4 ) (12.7 ) Total debt 1,427.1 1,444.8 Less current portion of long-term debt 0.1 35.3 Total long-term debt $ 1,427.0 $ 1,409.5

Financial Instruments (Tables)

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of the Fair Values of Derivative Instruments	The fair values of derivative instruments included within the Condensed and Consolidated Balance Sheets were as follows: Designated as hedge instruments Not designated as hedge instruments In millions Balance Sheet classification September 30, December 31, September 30, December 31, Asset derivatives Currency derivatives Other current assets $ — $ 1.7 $ 0.3 $ 0.4 Interest rate swaps Other current assets 1.0 — — — Interest rate swaps Other noncurrent assets — 5.7 — — Total asset derivatives 1.0 7.4 0.3 0.4 Liability derivatives Currency derivatives Accrued expenses and other current liabilities 0.2 — 1.1 0.1 Total liability derivatives $ 0.2 $ — $ 1.1 $ 0.1
Schedule of Derivatives Designated as Hedges Affecting Net Earning and AOCL	The amounts associated with derivatives designated as hedges affecting Net earnings and Accumulated other comprehensive loss for the three months ended September 30 were as follows: Amount of gain recognized in Accumulated other comprehensive loss Location of gain recognized Amount of gain reclassified from Accumulated other comprehensive loss and In millions 2019 2018 2019 2018 Currency derivatives $ 0.6 $ — Cost of goods sold $ 0.2 $ 1.3 Interest rate swaps 0.1 1.5 Interest expense 1.0 0.6 Total $ 0.7 $ 1.5 $ 1.2 $ 1.9 The amounts associated with derivatives designated as hedges affecting Net earnings and Accumulated other comprehensive loss for the nine months ended September 30 were as follows: Amount of gain (loss) recognized in Accumulated other comprehensive loss Location of gain recognized Amount of gain reclassified from Accumulated other comprehensive loss and In millions 2019 2018 2019 2018 Currency derivatives $ 1.6 $ 2.2 Cost of goods sold $ 3.5 $ 2.3 Interest rate swaps (2.1 ) 4.1 Interest expense 2.7 1.5 Total $ (0.5 ) $ 6.3 $ 6.2 $ 3.8

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lessee, Operating Lease Asset and Liability, and Other Information	The amounts included within the Condensed and Consolidated Balance Sheet related to the Company's ROU asset and lease liability at September 30, 2019 , were as follows: In millions Balance Sheet classification Real estate Equipment Total ROU asset Other noncurrent assets $ 57.7 $ 22.7 $ 80.4 Lease liability - current Accrued expenses and other current liabilities 14.9 10.5 25.4 Lease liability - noncurrent Other noncurrent liabilities 42.8 12.2 55.0 Other information: Weighted-average remaining term (in years) 6.7 2.5 Weighted-average discount rate 4.6 % 3.9 %
Lessee, Operating Leases, Additional Information	The following table summarizes additional information related to the Company's lease liability for the nine months ended September 30, 2019 : In millions Real estate Equipment Total Cash paid for amounts included in the measurement of lease liabilities $ 14.2 $ 10.5 $ 24.7 ROU assets obtained in exchange for new lease liabilities 8.5 12.1 20.6
Schedule of future minimum rental payments for operating leases	Future minimum rental commitments for the subsequent five years under non-cancellable operating leases with terms in excess of one year as of December 31, 2018 were as follows: In millions Total 2019 $ 30.3 2020 21.5 2021 14.1 2022 9.3 2023 5.5
Scheduled minimum lease payments under non-cancellable operating leases	Scheduled minimum lease payments required under non-cancellable operating leases for both the real estate and equipment lease portfolios for the remainder of 2019 and each of the years thereafter as of September 30, 2019 , are as follows: In millions Remainder of 2019 2020 2021 2022 2023 Thereafter Total Real estate leases $ 4.6 $ 16.2 $ 12.9 $ 9.8 $ 5.8 $ 18.5 $ 67.8 Equipment leases 3.3 10.1 6.5 2.9 0.9 0.1 23.8 Total $ 7.9 $ 26.3 $ 19.4 $ 12.7 $ 6.7 $ 18.6 $ 91.6

Pensions and Postretirement B_2

Pensions and Postretirement Benefits Other than Pensions (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits, Description [Abstract]
Schedule of Net Periodic Benefit Cost	The components of the Company’s Net periodic pension benefit cost (income) for the three and nine months ended September 30 were as follows: U.S. Three months ended Nine months ended In millions 2019 2018 2019 2018 Service cost $ 1.9 $ 1.7 $ 4.9 $ 5.2 Interest cost 3.1 2.6 8.8 7.7 Expected return on plan assets (3.1 ) (3.6 ) (9.4 ) (10.9 ) Administrative costs and other 0.5 0.5 1.3 1.4 Net amortization of: Prior service costs — — 0.2 0.2 Plan net actuarial losses 1.4 1.1 3.5 3.0 Net periodic pension benefit cost $ 3.8 $ 2.3 $ 9.3 $ 6.6 Non-U.S. Three months ended Nine months ended In millions 2019 2018 2019 2018 Service cost $ 0.4 $ 0.4 $ 1.2 $ 1.4 Interest cost 2.1 2.2 6.5 6.4 Expected return on plan assets (3.2 ) (3.9 ) (9.7 ) (11.7 ) Administrative costs and other 0.3 0.4 1.0 1.2 Net amortization of: Prior service costs 0.1 — 0.2 — Plan net actuarial losses 0.3 0.3 1.0 0.7 Net curtailment and settlement losses 0.1 — 1.5 — Net periodic pension benefit cost (income) $ 0.1 $ (0.6 ) $ 1.7 $ (2.0 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	Assets and liabilities measured at fair value at September 30, 2019 , were as follows: Fair value measurements Total In millions Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Recurring fair value measurements Assets: Investments $ — $ 16.3 $ — $ 16.3 Interest rate swaps — 1.0 — 1.0 Foreign currency contracts — 0.3 — 0.3 Total asset recurring fair value measurements $ — $ 17.6 $ — $ 17.6 Liabilities: Foreign currency contracts $ — $ 1.3 $ — $ 1.3 Deferred compensation and other retirement plans — 21.6 — 21.6 Total liability recurring fair value measurements $ — $ 22.9 $ — $ 22.9 Financial instruments not carried at fair value Total debt $ — $ 1,461.5 $ — $ 1,461.5 Total financial instruments not carried at fair value $ — $ 1,461.5 $ — $ 1,461.5 Assets and liabilities measured at fair value at December 31, 2018 , were as follows: Fair value measurements Total In millions Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Recurring fair value measurements Assets: Investments $ — $ 14.3 $ — $ 14.3 Interest rate swaps — 5.7 — 5.7 Foreign currency contracts — 2.1 — 2.1 Total asset recurring fair value measurements $ — $ 22.1 $ — $ 22.1 Liabilities: Foreign currency contracts $ — $ 0.1 $ — $ 0.1 Deferred compensation and other retirement plans — 19.1 — 19.1 Total liability recurring fair value measurements $ — $ 19.2 $ — $ 19.2 Financial instruments not carried at fair value Total debt $ — $ 1,403.2 $ — $ 1,403.2 Total financial instruments not carried at fair value $ — $ 1,403.2 $ — $ 1,403.2

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2019
Stockholders' Equity Note [Abstract]
Components Of Shareholders' Equity Rollforward	The changes in the components of Equity for the nine months ended September 30, 2019 , were as follows: Allegion plc shareholders' equity Ordinary shares In millions Total equity Amount Shares Capital in excess of par value Retained earnings Accumulated other comprehensive loss Noncontrolling Balance at December 31, 2018 $ 654.0 $ 0.9 94.6 $ — $ 873.6 $ (223.5 ) $ 3.0 Net earnings 80.3 — — — 80.2 — 0.1 Other comprehensive (loss) income, net (14.7 ) — — — — (15.3 ) 0.6 Share-based compensation activity 7.1 — 0.2 7.1 — — — Dividends to ordinary shareholders ($0.27 per share) (25.5 ) — — — (25.5 ) — — Repurchase of ordinary shares (63.8 ) — (0.7 ) (7.1 ) (56.7 ) — — Balance at March 31, 2019 637.4 0.9 94.1 — 871.6 (238.8 ) 3.7 Net earnings 109.4 — — — 109.3 — 0.1 Other comprehensive income (loss), net 5.1 — — — — 5.7 (0.6 ) Share-based compensation activity 6.8 — 0.1 6.8 — — — Dividends to noncontrolling interests (0.1 ) — — — — — (0.1 ) Dividends to ordinary shareholders ($0.27 per share) (25.2 ) — — — (25.2 ) — — Repurchase of ordinary shares (69.8 ) — (0.7 ) (6.8 ) (63.0 ) — — Balance at June 30, 2019 663.6 0.9 93.5 — 892.7 (233.1 ) 3.1 Net earnings 131.7 — — — 131.6 — 0.1 Other comprehensive loss, net (40.9 ) — — — — (39.9 ) (1.0 ) Share-based compensation activity 4.2 — — 4.2 — — — Dividends to ordinary shareholders ($0.27 per share) (25.1 ) — — — (25.1 ) — — Repurchase of ordinary shares (46.1 ) — (0.5 ) (4.2 ) (41.9 ) — — Other (0.2 ) — — — (0.2 ) — — Balance at September 30, 2019 $ 687.2 $ 0.9 93.0 $ — $ 957.1 $ (273.0 ) $ 2.2 The changes in the components of Equity for the nine months ended September 30, 2018 , were as follows: Allegion plc shareholders' equity Ordinary shares In millions Total equity Amount Shares Capital in excess of par value Retained earnings Accumulated other comprehensive loss Noncontrolling Balance at December 31, 2017 $ 405.5 $ 1.0 95.1 $ 9.1 $ 544.4 $ (152.9 ) $ 3.9 Net earnings 72.4 — — — 72.2 — 0.2 Other comprehensive income, net 27.1 — — — — 26.1 1.0 Share-based compensation activity 6.0 — 0.3 6.0 — — — Dividends to ordinary shareholders ($0.21 per share) (19.9 ) — — — (19.9 ) — — Repurchase of ordinary shares (30.0 ) (0.1 ) (0.4 ) (15.1 ) (14.8 ) — — Balance at March 31, 2018 461.1 0.9 95.0 — 581.9 (126.8 ) 5.1 Net earnings 114.0 — — — 113.9 — 0.1 Other comprehensive loss, net (51.5 ) — — — — (49.2 ) (2.3 ) Share-based compensation activity 5.2 — — 5.2 — — — Dividends to noncontrolling interests (0.2 ) — — — — — (0.2 ) Dividends to ordinary shareholders ($0.21 per share) (20.0 ) — — — (20.0 ) — — Other 0.1 — — — — 0.1 — Balance at June 30, 2018 508.7 0.9 95.0 5.2 675.8 (175.9 ) 2.7 Net earnings 116.1 — — — 116.0 — 0.1 Other comprehensive loss, net (12.8 ) — — — — (12.1 ) (0.7 ) Share-based compensation activity 7.1 0.1 0.1 7.0 — — — Dividends to ordinary shareholders ($0.21 per share) (20.0 ) — — — (20.0 ) — — Other (0.1 ) — — — 0.1 (0.2 ) — Balance at September 30, 2018 $ 599.0 $ 1.0 95.1 $ 12.2 $ 771.9 $ (188.2 ) $ 2.1
Schedule of Accumulated Other Comprehensive Loss	The changes in Accumulated other comprehensive loss for the nine months ended September 30, 2019 , were as follows: In millions Cash flow hedges Pension and OPEB items Foreign currency items Total December 31, 2018 $ 6.1 $ (123.2 ) $ (106.4 ) $ (223.5 ) Other comprehensive (loss) income before reclassifications (0.5 ) 2.8 (51.2 ) (48.9 ) Amounts reclassified from accumulated other comprehensive loss (a) (6.2 ) 4.7 — (1.5 ) Tax benefit (expense) 1.7 (0.8 ) — 0.9 September 30, 2019 $ 1.1 $ (116.5 ) $ (157.6 ) $ (273.0 ) The changes in Accumulated other comprehensive loss for the nine months ended September 30, 2018 , were as follows: In millions Cash flow hedges Pension and OPEB items Foreign currency items Total December 31, 2017 $ 3.8 $ (107.6 ) $ (49.1 ) $ (152.9 ) Other comprehensive income (loss) before reclassifications 6.3 2.4 (42.2 ) (33.5 ) Amounts reclassified from accumulated other comprehensive loss (a) (3.8 ) 3.3 — (0.5 ) Tax expense (0.7 ) (0.6 ) — (1.3 ) September 30, 2018 $ 5.6 $ (102.5 ) $ (91.3 ) $ (188.2 )

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-Based Compensation Expense	The following table summarizes the expenses recognized for the three and nine months ended September 30 : Three months ended Nine months ended In millions 2019 2018 2019 2018 Stock options $ 0.4 $ 1.0 $ 3.2 $ 3.9 RSUs 1.6 2.6 8.0 8.1 PSUs 1.7 1.1 5.1 4.2 Deferred compensation (0.1 ) 0.6 2.1 1.2 Pre-tax expense 3.6 5.3 18.4 17.4 Tax benefit (0.5 ) (1.0 ) (2.3 ) (1.9 ) After-tax expense $ 3.1 $ 4.3 $ 16.1 $ 15.5
Grants of Stock Options and RSUs	Grants issued during the nine months ended September 30 were as follows: 2019 2018 Number Weighted- Number Weighted- Stock options 195,675 $ 19.58 160,849 $ 21.29 RSUs 129,835 $ 90.91 121,928 $ 84.86
Average fair value of stock options, assumptions	The following assumptions were used during the nine months ended September 30 : 2019 2018 Dividend yield 1.23 % 0.97 % Volatility 21.44 % 22.38 % Risk-free rate of return 2.53 % 2.75 % Expected life (in years) 6.0 6.0

Restructuring Activities (Table

Restructuring Activities (Tables)	9 Months Ended
	Sep. 30, 2019
Restructuring Charges [Abstract]
Schedule of Changes in Restructuring Reserve	The changes in the restructuring reserve during the nine months ended September 30, 2019 , were as follows: In millions Total December 31, 2018 $ 2.1 Additions, net of reversals 14.2 Cash and non-cash uses (12.9 ) September 30, 2019 $ 3.4

Other, Net (Tables)

Other, Net (Tables)	9 Months Ended
	Sep. 30, 2019
Other Income and Expenses [Abstract]
Other, Net	The components of Other expense (income), net for the three and nine months ended September 30 were as follows: Three months ended Nine months ended In millions 2019 2018 2019 2018 Interest income $ (0.4 ) $ (0.4 ) $ (1.1 ) $ (0.7 ) Foreign currency exchange loss (gain) 0.8 (0.8 ) 1.1 (1.0 ) Loss (earnings) from equity method investments 0.1 — 0.5 (0.1 ) Net periodic pension and postretirement benefit cost (income), less service cost 1.4 (0.7 ) 3.2 (2.3 ) Other 0.1 — (2.1 ) 0.2 Other expense (income), net $ 2.0 $ (1.9 ) $ 1.6 $ (3.9 )

Earnings Per Share (EPS) (Table

Earnings Per Share (EPS) (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share Basic and Diluted Shares	The following table summarizes the weighted-average number of ordinary shares outstanding for basic and diluted EPS calculations for the three and nine months ended September 30 : Three months ended Nine months ended In millions 2019 2018 2019 2018 Weighted-average number of basic shares 93.3 95.1 93.8 95.1 Shares issuable under incentive stock plans 0.7 0.7 0.7 0.7 Weighted-average number of diluted shares 94.0 95.8 94.5 95.8

Net Revenues (Tables)

Net Revenues (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	The following tables show the Company's Net revenues related to both tangible product sales and services for the three and nine months ended September 30, 2019 and 2018 , respectively, disaggregated by business segment. Net revenues are shown by tangible product sales and services, as contract terms, conditions and economic factors affecting the nature, amount, timing and uncertainty around revenue recognition and cash flows are substantially similar within each of these two principal revenue streams: Three months ended September 30, 2019 Nine months ended September 30, 2019 In millions Americas EMEIA Asia Pacific Consolidated Americas EMEIA Asia Pacific Consolidated Net revenues Products $ 567.8 $ 130.5 $ 40.7 $ 739.0 $ 1,588.2 $ 406.3 $ 117.2 $ 2,111.7 Services — 7.3 2.0 9.3 — 16.6 6.2 22.8 Total Net revenues $ 567.8 $ 137.8 $ 42.7 $ 748.3 $ 1,588.2 $ 422.9 $ 123.4 $ 2,134.5 Three months ended September 30, 2018 Nine months ended September 30, 2018 In millions Americas EMEIA Asia Pacific Consolidated Americas EMEIA Asia Pacific Consolidated Net revenues Products $ 530.1 $ 129.5 $ 44.8 $ 704.4 $ 1,495.9 $ 419.6 $ 98.7 $ 2,014.2 Services — 4.9 2.2 7.1 — 12.9 2.2 15.1 Total Net revenues $ 530.1 $ 134.4 $ 47.0 $ 711.5 $ 1,495.9 $ 432.5 $ 100.9 $ 2,029.3

Business Segment Information (T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Summary of Operations by Reportable Segments	A summary of operations by reportable segment for the three and nine months ended September 30 was as follows: Three months ended Nine months ended In millions 2019 2018 2019 2018 Net revenues Americas $ 567.8 $ 530.1 $ 1,588.2 $ 1,495.9 EMEIA 137.8 134.4 422.9 432.5 Asia Pacific 42.7 47.0 123.4 100.9 Total $ 748.3 $ 711.5 $ 2,134.5 $ 2,029.3 Segment operating income Americas $ 175.6 $ 153.8 $ 457.7 $ 415.5 EMEIA 7.5 7.6 19.9 27.3 Asia Pacific 4.1 1.5 3.9 0.8 Total 187.2 162.9 481.5 443.6 Reconciliation to Operating income Unallocated corporate expense (19.1 ) (20.6 ) (59.7 ) (59.2 ) Operating income 168.1 142.3 421.8 384.4 Reconciliation to earnings before income taxes Interest expense 15.6 14.0 42.7 40.3 Other expense (income), net 2.0 (1.9 ) 1.6 (3.9 ) Earnings before income taxes $ 150.5 $ 130.2 $ 377.5 $ 348.0

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability	The changes in the standard product warranty liability for the nine months ended September 30 were as follows: In millions 2019 2018 Balance at beginning of period $ 14.5 $ 14.1 Reductions for payments (6.6 ) (5.9 ) Accruals for warranties issued during the current period 8.4 6.1 Changes to accruals related to preexisting warranties (0.4 ) (0.1 ) Acquisitions — 0.5 Currency translation (0.2 ) (0.1 ) Balance at end of period $ 15.7 $ 14.6

Guarantor Financial Informati_2

Guarantor Financial Information (Tables)	9 Months Ended
	Sep. 30, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Statement of Comprehensive Income	Condensed and Consolidated Statement of Comprehensive Income For the three months ended September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 748.3 $ — $ 748.3 Cost of goods sold — — 412.8 — 412.8 Selling and administrative expenses 1.6 — 165.8 — 167.4 Operating (loss) income (1.6 ) — 169.7 — 168.1 Equity earnings (loss) in affiliates, net of tax 145.2 88.9 — (234.1 ) — Interest expense 9.5 6.0 0.1 — 15.6 Intercompany interest and fees 2.5 27.0 (29.5 ) — — Other expense, net — — 2.0 — 2.0 Earnings (loss) before income taxes 131.6 55.9 197.1 (234.1 ) 150.5 Provision (benefit) for income taxes — (8.1 ) 26.9 — 18.8 Net earnings (loss) 131.6 64.0 170.2 (234.1 ) 131.7 Less: Net earnings attributable to noncontrolling interests — — 0.1 — 0.1 Net earnings (loss) attributable to Allegion plc $ 131.6 $ 64.0 $ 170.1 $ (234.1 ) $ 131.6 Total comprehensive income (loss) $ 91.7 $ 63.0 $ 130.2 $ (194.1 ) $ 90.8 Less: Total comprehensive loss attributable to noncontrolling interests — — (0.9 ) — (0.9 ) Total comprehensive income (loss) attributable to Allegion plc $ 91.7 $ 63.0 $ 131.1 $ (194.1 ) $ 91.7 Condensed and Consolidated Statement of Comprehensive Income For the nine months ended September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 2,134.5 $ — $ 2,134.5 Cost of goods sold — — 1,201.4 — 1,201.4 Selling and administrative expenses 4.7 — 506.6 — 511.3 Operating (loss) income (4.7 ) — 426.5 — 421.8 Equity earnings (loss) in affiliates, net of tax 354.2 196.9 — (551.1 ) — Interest expense 24.2 18.3 0.2 — 42.7 Intercompany interest and fees 4.2 79.8 (84.0 ) — — Other income, net — — 1.6 — 1.6 Earnings (loss) before income taxes 321.1 98.8 508.7 (551.1 ) 377.5 Provision (benefit) for income taxes — (24.1 ) 80.2 — 56.1 Net earnings (loss) 321.1 122.9 428.5 (551.1 ) 321.4 Less: Net earnings attributable to noncontrolling interests — — 0.3 — 0.3 Net earnings (loss) attributable to Allegion plc $ 321.1 $ 122.9 $ 428.2 $ (551.1 ) $ 321.1 Total comprehensive income (loss) $ 271.6 $ 118.4 $ 381.4 $ (500.5 ) $ 270.9 Less: Total comprehensive loss attributable to noncontrolling interests — — (0.7 ) — (0.7 ) Total comprehensive income (loss) attributable to Allegion plc $ 271.6 $ 118.4 $ 382.1 $ (500.5 ) $ 271.6 Condensed and Consolidated Statement of Comprehensive Income For the three months ended September 30, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 711.5 $ — $ 711.5 Cost of goods sold — — 402.1 — 402.1 Selling and administrative expenses 1.3 — 165.8 — 167.1 Operating (loss) income (1.3 ) — 143.6 — 142.3 Equity earnings (loss) in affiliates, net of tax 124.5 73.2 — (197.7 ) — Interest expense 7.2 6.4 0.4 — 14.0 Intercompany interest and fees — 26.3 (26.3 ) — — Other income, net — — (1.9 ) — (1.9 ) Earnings (loss) before income taxes 116.0 40.5 171.4 (197.7 ) 130.2 Provision (benefit) for income taxes — (7.7 ) 21.8 — 14.1 Net earnings (loss) 116.0 48.2 149.6 (197.7 ) 116.1 Less: Net earnings attributable to noncontrolling interests — — 0.1 — 0.1 Net earnings (loss) attributable to Allegion plc $ 116.0 $ 48.2 $ 149.5 $ (197.7 ) $ 116.0 Total comprehensive income (loss) $ 103.9 $ 48.1 $ 142.5 $ (191.2 ) $ 103.3 Less: Total comprehensive loss attributable to noncontrolling interests — — (0.6 ) — (0.6 ) Total comprehensive income (loss) attributable to Allegion plc $ 103.9 $ 48.1 $ 143.1 $ (191.2 ) $ 103.9 Condensed and Consolidated Statement of Comprehensive Income For the nine months ended September 30, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net revenues $ — $ — $ 2,029.3 $ — $ 2,029.3 Cost of goods sold — — 1,156.5 — 1,156.5 Selling and administrative expenses 4.6 — 483.8 — 488.4 Operating (loss) income (4.6 ) — 389.0 — 384.4 Equity earnings (loss) in affiliates, net of tax 327.0 146.4 — (473.4 ) — Interest expense 20.3 19.4 0.6 — 40.3 Intercompany interest and fees — 78.2 (78.2 ) — — Other income, net — — (3.9 ) — (3.9 ) Earnings (loss) before income taxes 302.1 48.8 470.5 (473.4 ) 348.0 Provision (benefit) for income taxes — (20.0 ) 65.5 — 45.5 Net earnings (loss) 302.1 68.8 405.0 (473.4 ) 302.5 Less: Net earnings attributable to noncontrolling interests — — 0.4 — 0.4 Net earnings (loss) attributable to Allegion plc $ 302.1 $ 68.8 $ 404.6 $ (473.4 ) $ 302.1 Total comprehensive income (loss) $ 266.9 $ 70.7 $ 365.8 $ (438.1 ) $ 265.3 Less: Total comprehensive loss attributable to noncontrolling interests — — (1.6 ) — (1.6 ) Total comprehensive income (loss) attributable to Allegion plc $ 266.9 $ 70.7 $ 367.4 $ (438.1 ) $ 266.9
Condensed Balance Sheet	Condensed and Consolidated Balance Sheet September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Current assets: Cash and cash equivalents $ 16.6 $ 2.4 $ 213.9 $ — $ 232.9 Restricted cash — — 3.4 — 3.4 Accounts and notes receivable, net — — 367.5 — 367.5 Inventories — — 293.9 — 293.9 Other current assets 1.2 25.8 19.8 (14.3 ) 32.5 Assets held for sale — — 2.9 — 2.9 Accounts and notes receivable affiliates — 510.1 408.1 (918.2 ) — Total current assets 17.8 538.3 1,309.5 (932.5 ) 933.1 Investment in affiliates 1,571.6 873.7 — (2,445.3 ) — Property, plant and equipment, net — — 281.9 — 281.9 Intangible assets, net — — 1,372.1 — 1,372.1 Notes receivable affiliates 31.2 1,404.8 2,868.4 (4,304.4 ) — Other noncurrent assets 4.8 56.3 217.2 — 278.3 Total assets $ 1,625.4 $ 2,873.1 $ 6,049.1 $ (7,682.2 ) $ 2,865.4 Current liabilities: Accounts payable and other current liabilities $ 3.8 $ 13.5 $ 488.1 $ (14.3 ) $ 491.1 Short-term borrowings and current maturities of long-term debt — — 0.1 — 0.1 Accounts and notes payable affiliates 4.3 403.8 510.1 (918.2 ) — Total current liabilities 8.1 417.3 998.3 (932.5 ) 491.2 Long-term debt 632.8 793.5 0.7 — 1,427.0 Notes payable affiliates 297.0 2,571.4 1,436.0 (4,304.4 ) — Other noncurrent liabilities 2.5 6.1 251.4 — 260.0 Total liabilities 940.4 3,788.3 2,686.4 (5,236.9 ) 2,178.2 Equity: Total shareholders' equity (deficit) 685.0 (915.2 ) 3,360.5 (2,445.3 ) 685.0 Noncontrolling interests — — 2.2 — 2.2 Total equity (deficit) 685.0 (915.2 ) 3,362.7 (2,445.3 ) 687.2 Total liabilities and equity $ 1,625.4 $ 2,873.1 $ 6,049.1 $ (7,682.2 ) $ 2,865.4 Condensed and Consolidated Balance Sheet December 31, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Current assets: Cash and cash equivalents $ 4.2 $ 1.0 $ 278.6 $ — $ 283.8 Restricted cash — — 6.8 — 6.8 Accounts and notes receivable, net — — 324.9 — 324.9 Inventories — — 280.3 — 280.3 Other current assets 0.5 33.7 19.1 (18.3 ) 35.0 Assets held for sale — — 0.8 — 0.8 Accounts and notes receivable affiliates — 816.2 369.8 (1,186.0 ) — Total current assets 4.7 850.9 1,280.3 (1,204.3 ) 931.6 Investment in affiliates 1,265.8 718.2 — (1,984.0 ) — Property, plant and equipment, net — — 276.7 — 276.7 Intangible assets, net — — 1,430.1 — 1,430.1 Notes receivable affiliates 30.8 1,061.2 2,553.4 (3,645.4 ) — Other noncurrent assets 4.0 61.2 106.6 — 171.8 Total assets $ 1,305.3 $ 2,691.5 $ 5,647.1 $ (6,833.7 ) $ 2,810.2 Current liabilities: Accounts payable and other current liabilities $ 2.0 $ 6.8 $ 495.0 $ (18.3 ) $ 485.5 Short-term borrowings and current maturities of long-term debt 35.0 — 0.3 — 35.3 Accounts and notes payable affiliates 0.3 369.5 816.2 (1,186.0 ) — Total current liabilities 37.3 376.3 1,311.5 (1,204.3 ) 520.8 Long-term debt 615.8 792.8 0.9 — 1,409.5 Notes payable affiliates — 2,553.4 1,092.0 (3,645.4 ) — Other noncurrent liabilities 1.2 5.5 219.2 — 225.9 Total liabilities 654.3 3,728.0 2,623.6 (4,849.7 ) 2,156.2 Equity: Total shareholders' equity (deficit) 651.0 (1,036.5 ) 3,020.5 (1,984.0 ) 651.0 Noncontrolling interests — — 3.0 — 3.0 Total equity (deficit) 651.0 (1,036.5 ) 3,023.5 (1,984.0 ) 654.0 Total liabilities and equity $ 1,305.3 $ 2,691.5 $ 5,647.1 $ (6,833.7 ) $ 2,810.2
Condensed Cash Flow Statement	Condensed and Consolidated Statement of Cash Flows For the nine months ended September 30, 2019 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net cash (used in) provided by operating activities $ (10.4 ) $ (43.2 ) $ 410.9 $ (77.9 ) $ 279.4 Cash flows from investing activities: Capital expenditures — — (49.4 ) — (49.4 ) Acquisition of and equity investments in businesses, net of cash acquired — — (4.6 ) — (4.6 ) Other investing activities, net — (1.5 ) (2.2 ) 1.7 (2.0 ) Net cash (used in) provided by investing activities — (1.5 ) (56.2 ) 1.7 (56.0 ) Cash flows from financing activities: Debt repayments, net (17.5 ) — (0.5 ) — (18.0 ) Debt issuance costs (3.0 ) — — — (3.0 ) Net inter-company proceeds (payments) 296.6 46.0 (342.6 ) — — Dividends paid — — (77.9 ) 77.9 — Dividends paid to shareholders (75.5 ) — — — (75.5 ) Repurchase of ordinary shares (179.7 ) — — — (179.7 ) Other financing activities, net 1.9 0.1 1.5 (1.7 ) 1.8 Net cash provided by (used in) financing activities 22.8 46.1 (419.5 ) 76.2 (274.4 ) Effect of exchange rate changes on cash, cash equivalents and restricted cash — — (3.3 ) — (3.3 ) Net increase (decrease) in cash, cash equivalents and restricted cash 12.4 1.4 (68.1 ) — (54.3 ) Cash, cash equivalents and restricted cash - beginning of period 4.2 1.0 285.4 — 290.6 Cash, cash equivalents and restricted cash - end of period $ 16.6 $ 2.4 $ 217.3 $ — $ 236.3 Condensed and Consolidated Statement of Cash Flows For the nine months ended September 30, 2018 In millions Allegion plc Allegion US Holding Other subsidiaries Consolidating adjustments Total Net cash provided by (used in) operating activities $ 135.4 $ (68.5 ) $ 402.5 $ (209.0 ) $ 260.4 Cash flows from investing activities: Capital expenditures — — (31.8 ) — (31.8 ) Acquisition of and equity investments in businesses, net of cash acquired — (247.1 ) (128.7 ) — (375.8 ) Other investing activities, net — — (1.1 ) — (1.1 ) Net cash used in investing activities — (247.1 ) (161.6 ) — (408.7 ) Cash flows from financing activities: Debt repayments, net (26.3 ) — (1.1 ) — (27.4 ) Net inter-company (payments) proceeds (22.0 ) 329.3 (307.3 ) — — Dividends paid — — (209.0 ) 209.0 — Dividends paid to shareholders (59.6 ) — — — (59.6 ) Repurchase of ordinary shares (30.0 ) — — — (30.0 ) Other financing activities, net 2.4 — (2.3 ) — 0.1 Net cash (used in) provided by financing activities (135.5 ) 329.3 (519.7 ) 209.0 (116.9 ) Effect of exchange rate changes on cash and cash equivalents — — (4.5 ) — (4.5 ) Net (decrease) increase in cash and cash equivalents (0.1 ) 13.7 (283.3 ) — (269.7 ) Cash and cash equivalents - beginning of period 0.7 0.3 465.2 — 466.2 Cash and cash equivalents - end of period $ 0.6 $ 14.0 $ 181.9 $ — $ 196.5

Inventories (Schedule of Major

Inventories (Schedule of Major Classes of Inventory) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Inventory, Net [Abstract]
Raw materials	$ 127	$ 117.2
Work-in-process	34.6	34.4
Finished goods	132.3	128.7
Total inventories	$ 293.9	$ 280.3

Goodwill (Details)

Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, gross		$ 1,368.5
Accumulated impairment		(485.5)
Goodwill, net beginning balance	$ 883
Acquisitions and adjustments	(3)
Currency translation	(19.6)
Goodwill, net ending balance	860.4
Americas
Goodwill [Roll Forward]
Goodwill, gross		486.1
Accumulated impairment		0
Goodwill, net beginning balance	486.1
Acquisitions and adjustments	(1.3)
Currency translation	0
Goodwill, net ending balance	484.8
EMEIA
Goodwill [Roll Forward]
Goodwill, gross		767.1
Accumulated impairment		(478.6)
Goodwill, net beginning balance	288.5
Acquisitions and adjustments	2.7
Currency translation	(13.7)
Goodwill, net ending balance	277.5
Asia Pacific
Goodwill [Roll Forward]
Goodwill, gross		115.3
Accumulated impairment		$ (6.9)
Goodwill, net beginning balance	108.4
Acquisitions and adjustments	(4.4)
Currency translation	(5.9)
Goodwill, net ending balance	$ 98.1

Intangible Assets (Schedule of

Intangible Assets (Schedule of Intangible Assets, net of Goodwill) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	$ 556.6	$ 573.1
Finite-lived intangible assets, accumulated amortization	(171.6)	(156.6)
Finite-lived intangible assets, net	385	416.5
Intangible assets, gross	683.3	703.7
Intangible assets, net	511.7	547.1
Completed technologies/patents
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	58.3	59.4
Finite-lived intangible assets, accumulated amortization	(17.4)	(14.2)
Finite-lived intangible assets, net	40.9	45.2
Customer relationships
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	403.2	419.3
Finite-lived intangible assets, accumulated amortization	(99.6)	(88.5)
Finite-lived intangible assets, net	303.6	330.8
Trade names
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	80.2	84.9
Finite-lived intangible assets, accumulated amortization	(47.2)	(47.4)
Finite-lived intangible assets, net	33	37.5
Other
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	14.9	9.5
Finite-lived intangible assets, accumulated amortization	(7.4)	(6.5)
Finite-lived intangible assets, net	7.5	3
Trade names
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Indefinite-lived intangible assets	$ 126.7	$ 130.6

Intangible Assets (Narrative) (

Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 23.3	$ 28.6
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Intangible amortization expense, next twelve months	30.3
Intangible amortization expense, year two	28.2
Intangible amortization expense, year three	28.2
Intangible amortization expense, year four	28.1
Intangible amortization expense year five	$ 28

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired			$ 4.6		$ 373
Acquisition and integration related expenses	$ 0.1	$ 4.1	$ 1.9	$ 8.6
Payments for equity method investments					8
Customer relationships | Six Acquisitions
Business Acquisition [Line Items]
Finite-lived intangible assets acquired					$ 112
Finite-lived intangible assets acquired, weighted-average useful life					17 years
Completed technologies | Six Acquisitions
Business Acquisition [Line Items]
Finite-lived intangible assets acquired					$ 33
Finite-lived intangible assets acquired, weighted-average useful life					16 years
Other intangible assets | Six Acquisitions
Business Acquisition [Line Items]
Finite-lived intangible assets acquired					$ 6
Trade names | Six Acquisitions
Business Acquisition [Line Items]
Indefinite-lived trade names acquired					$ 59

Acquisitions (Opening Balance S

Acquisitions (Opening Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill	$ 860.4	$ 883
Six Acquisitions
Business Acquisition [Line Items]
Accounts receivable, net	28.9
Inventories	28.5
Other current assets	1.3
Property, plant and equipment, net	27.6
Goodwill	139.8
Intangible assets, net	204.3
Other noncurrent assets	2
Accounts payable	(11.1)
Accrued expenses and other current liabilities	(35.7)
Other noncurrent liabilities	(11.1)
Total, net	$ 374.5

Acquisitions (Pro forma table)

Acquisitions (Pro forma table) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Business Combinations [Abstract]
Net revenues	$ 711.5	$ 2,071.8
Net earnings attributable to Allegion plc	$ 119.3	$ 313.1

Debt and Credit Facilities (Sum

Debt and Credit Facilities (Summary of Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total borrowings outstanding	$ 1,439.5	$ 1,457.5
Less discounts and debt issuance costs, net	(12.4)	(12.7)
Total debt	1,427.1	1,444.8
Less current portion of long-term debt	0.1	35.3
Total long-term debt	1,427	1,409.5
Revolving Facility
Debt Instrument [Line Items]
Long-term line of credit	0	0
Other debt
Debt Instrument [Line Items]
Other debt	0.7	1.2
Term Facility | Term Facility
Debt Instrument [Line Items]
Unsecured Debt	238.8	656.3
Senior Notes | 3.200% Senior Note due 2024
Debt Instrument [Line Items]
Unsecured Debt	400	400
Senior Notes | 3.550% Senior Note due 2027
Debt Instrument [Line Items]
Unsecured Debt	400	400
Senior Notes | 3.500% Senior Notes Due 2029
Debt Instrument [Line Items]
Unsecured Debt	$ 400	$ 0

Debt and Credit Facilities (Nar

Debt and Credit Facilities (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Write-off of deferred financing costs	$ 2.7
Interest rate swaps
Debt Instrument [Line Items]
Derivative, notional amount	$ 200	$ 250
Credit Facility Due 2022
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Weighted-average interest rate	2.70%
Credit Facility Due 2022 | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.125%
Credit Facility Due 2022 | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Term Facility
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 700
Repayments on Term Facility	$ 400
Term Facility | 12/31/17 through 12/31/20
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.25%
Term Facility | 3/31/21 through 9/22/22
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	2.50%
Revolving Facility
Debt Instrument [Line Items]
Line of credit facility, borrowing capacity	$ 500
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases	100
Long-term line of credit	0	0
Letters of credit outstanding amount	16.2
Term Facility | Term Facility
Debt Instrument [Line Items]
Unsecured Debt	238.8	656.3
Senior Notes | 3.200% Senior Note due 2024
Debt Instrument [Line Items]
Unsecured Debt	$ 400	400
Weighted-average interest rate	3.20%
Senior Notes | 3.550% Senior Note due 2027
Debt Instrument [Line Items]
Unsecured Debt	$ 400	400
Weighted-average interest rate	3.55%
Senior Notes | 3.500% Senior Notes Due 2029
Debt Instrument [Line Items]
Unsecured Debt	$ 400	$ 0
Debt Issuance Costs, Gross	$ 4.3
Weighted-average interest rate	3.50%

Financial Instruments (Narrativ

Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Currency derivatives
Derivative [Line Items]
Derivative, notional amount	$ 133.2	$ 81.8
Deferred gain, net of tax, included in accumulated other comprehensive loss	0.3	1.8
Currency derivatives expected to be reclassified into earnings over the next twelve months	0.3
Interest rate swaps
Derivative [Line Items]
Derivative, notional amount	200	250
Deferred gain, net of tax, included in accumulated other comprehensive loss	0.7	$ 4.3
Interest rate swap gain to be reclassified into earning over net twelve months	0.7
Amount settled early
Derivative [Line Items]
Derivative, notional amount	$ 50

Financial Instruments Schedule

Financial Instruments Schedule of the Fair Values of Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Interest rate swaps	$ 1	$ 5.7
Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Currency derivatives, assets	0	1.7
Interest rate swaps	1	5.7
Total asset derivatives	1	7.4
Currency derivatives, liabilities	0.2	0
Total liability derivatives	0.2	0
Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Currency derivatives, assets	0.3	0.4
Total asset derivatives	0.3	0.4
Currency derivatives, liabilities	1.1	0.1
Total liability derivatives	$ 1.1	$ 0.1

Financial Instruments Schedul_2

Financial Instruments Schedule of Derivatives Designated as Hedges Affecting Net Earnings and Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments, gain (loss) recognized in accumulated other comprehensive loss	$ 0.7	$ 1.5	$ (0.5)	$ 6.3
Derivative instruments, gain (loss) reclassified from accumulated other comprehensive loss into income	1.2	1.9	6.2	3.8
Currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments, gain (loss) recognized in accumulated other comprehensive loss	0.6	0	1.6	2.2
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments, gain (loss) recognized in accumulated other comprehensive loss	0.1	1.5	(2.1)	4.1
Cost of goods sold | Currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments, gain (loss) reclassified from accumulated other comprehensive loss into income	0.2	1.3	3.5	2.3
Interest expense | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments, gain (loss) reclassified from accumulated other comprehensive loss into income	$ 1	$ 0.6	$ 2.7	$ 1.5

Operating Lease Asset and Liabi

Operating Lease Asset and Liability, and Other Information (Details) $ in Millions	Sep. 30, 2019USD ($)
Lessee, Lease, Description
ROU asset	$ 80.4
Lease liability - current	25.4
Lease liability - noncurrent	55
Real estate
Lessee, Lease, Description
ROU asset	57.7
Lease liability - current	14.9
Lease liability - noncurrent	$ 42.8
Weighted-average remaining term (in years)	6 years 8 months 12 days
Weighted-average discount rate	4.60%
Equipment
Lessee, Lease, Description
ROU asset	$ 22.7
Lease liability - current	10.5
Lease liability - noncurrent	$ 12.2
Weighted-average remaining term (in years)	2 years 6 months
Weighted-average discount rate	3.90%

Operating Leases, Additional In

Operating Leases, Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Lessee, Lease, Description
Cash paid for amounts included in the measurement of lease liabilities	$ 24.7
ROU assets obtained in exchange for new lease liabilities	20.6
Real estate
Lessee, Lease, Description
Cash paid for amounts included in the measurement of lease liabilities	14.2
ROU assets obtained in exchange for new lease liabilities	8.5
Equipment
Lessee, Lease, Description
Cash paid for amounts included in the measurement of lease liabilities	10.5
ROU assets obtained in exchange for new lease liabilities	$ 12.1

Schedule of Future Minimum Rent

Schedule of Future Minimum Rental Payments for Operating Leases (Details) $ in Millions	Dec. 31, 2018USD ($)
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 30.3
Operating Leases, Future Minimum Payments, Due in Two Years	21.5
Operating Leases, Future Minimum Payments, Due in Three Years	14.1
Operating Leases, Future Minimum Payments, Due in Four Years	9.3
Operating Leases, Future Minimum Payments, Due in Five Years	$ 5.5

Operating Lease Liability Matur

Operating Lease Liability Maturity (Details) $ in Millions	Sep. 30, 2019USD ($)
Lessee, Lease, Description
Remainder of 2019	$ 7.9
Year Two	26.3
Year Three	19.4
Year Four	12.7
Year Five	6.7
Thereafter	18.6
Total	91.6
Real estate
Lessee, Lease, Description
Remainder of 2019	4.6
Year Two	16.2
Year Three	12.9
Year Four	9.8
Year Five	5.8
Thereafter	18.5
Total	67.8
Equipment
Lessee, Lease, Description
Remainder of 2019	3.3
Year Two	10.1
Year Three	6.5
Year Four	2.9
Year Five	0.9
Thereafter	0.1
Total	$ 23.8

Leases (Details)

Leases (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Leases [Abstract]
Total rent expense	$ 32.2
Rental expense related to short-term leases, variable lease payments, or other leases not included in lease liability	7.5
Imputed interest	$ 11.2

Pensions and Postretirement B_3

Pensions and Postretirement Benefits Other than Pensions (Components of the Company's Pension-Related Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
U.S.
Service cost	$ 1.9	$ 1.7	$ 4.9	$ 5.2
Interest cost	3.1	2.6	8.8	7.7
Expected return on plan assets	(3.1)	(3.6)	(9.4)	(10.9)
Administrative costs and other	0.5	0.5	1.3	1.4
Prior service costs	0	0	0.2	0.2
Plan net actuarial losses	1.4	1.1	3.5	3
Net periodic pension benefit cost (income)	3.8	2.3	9.3	6.6
Non-U.S.
Service cost	0.4	0.4	1.2	1.4
Interest cost	2.1	2.2	6.5	6.4
Expected return on plan assets	(3.2)	(3.9)	(9.7)	(11.7)
Administrative costs and other	0.3	0.4	1	1.2
Prior service costs	0.1	0	0.2	0
Plan net actuarial losses	0.3	0.3	1	0.7
Net curtailment and settlement losses	0.1	0	1.5	0
Net periodic pension benefit cost (income)	$ 0.1	$ (0.6)	$ 1.7	$ (2)

Pensions and Postretirement B_4

Pensions and Postretirement Benefits Other than Pensions (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Retirement Benefits, Description [Abstract]
Employer contributions	$ 6.8	$ 6.6
Additional contributions expected during the remainder of the year	$ 3.3

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets, fair value measurements [Abstract]
Investments	$ 16.3	$ 14.3
Interest rate swaps	1	5.7
Foreign currency contracts	0.3	2.1
Total asset recurring fair value measurements	17.6	22.1
Liabilities, fair value measurements [Abstract]
Foreign currency contracts	1.3	0.1
Deferred compensation and other retirement plans	21.6	19.1
Total liability recurring fair value measurements	22.9	19.2
Fair Value Measurements, Nonrecurring Value Measurement [Abstract]
Total debt	1,461.5	1,403.2
Total financial instruments not carried at fair value	1,461.5	1,403.2
Quoted prices in active markets for identical assets (Level 1)
Assets, fair value measurements [Abstract]
Investments	0	0
Interest rate swaps	0	0
Foreign currency contracts	0	0
Total asset recurring fair value measurements	0	0
Liabilities, fair value measurements [Abstract]
Foreign currency contracts	0	0
Deferred compensation and other retirement plans	0	0
Total liability recurring fair value measurements	0	0
Fair Value Measurements, Nonrecurring Value Measurement [Abstract]
Total debt	0	0
Total financial instruments not carried at fair value	0	0
Significant other observable inputs (Level 2)
Assets, fair value measurements [Abstract]
Investments	16.3	14.3
Interest rate swaps	1	5.7
Foreign currency contracts	0.3	2.1
Total asset recurring fair value measurements	17.6	22.1
Liabilities, fair value measurements [Abstract]
Foreign currency contracts	1.3	0.1
Deferred compensation and other retirement plans	21.6	19.1
Total liability recurring fair value measurements	22.9	19.2
Fair Value Measurements, Nonrecurring Value Measurement [Abstract]
Total debt	1,461.5	1,403.2
Total financial instruments not carried at fair value	1,461.5	1,403.2
Significant unobservable inputs (Level 3)
Assets, fair value measurements [Abstract]
Investments	0	0
Interest rate swaps	0	0
Foreign currency contracts	0	0
Total asset recurring fair value measurements	0	0
Liabilities, fair value measurements [Abstract]
Foreign currency contracts	0	0
Deferred compensation and other retirement plans	0	0
Total liability recurring fair value measurements	0	0
Fair Value Measurements, Nonrecurring Value Measurement [Abstract]
Total debt	0	0
Total financial instruments not carried at fair value	$ 0	$ 0

Equity (Components of Sharehold

Equity (Components of Shareholders' Equity Rollforward) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	$ 663.6	$ 637.4	$ 654	$ 508.7	$ 461.1	$ 405.5	$ 654	$ 405.5
Net earnings	131.7	109.4	80.3	116.1	114	72.4	321.4	302.5
Other comprehensive income (loss), net of tax	(40.9)	5.1	(14.7)	(12.8)	(51.5)	27.1
Share-based compensation	4.2	6.8	7.1	7.1	5.2	6
Dividends to noncontrolling interests		(0.1)			(0.2)
Dividends to ordinary shareholders	(25.1)	(25.2)	(25.5)	(20)	(20)	(19.9)
Repurchase of ordinary shares, value	(46.1)	(69.8)	(63.8)			(30)	(179.7)	(30)
Other	(0.2)			(0.1)	0.1
Ending balance, value	687.2	663.6	637.4	599	508.7	461.1	687.2	599
Ordinary shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	$ 0.9	$ 0.9	$ 0.9	$ 0.9	$ 0.9	$ 1	$ 0.9	$ 1
Beginning balance, shares	93.5	94.1	94.6	95	95	95.1	94.6	95.1
Share-based compensation	$ 0	$ 0	$ 0	$ 0.1	$ 0	$ 0
Share-based compensation, shares	0	0.1	0.2	0.1	0	0.3
Repurchase of ordinary shares, value	$ 0	$ 0	$ 0			$ (0.1)
Repurchase of ordinary shares, shares	(0.5)	(0.7)	(0.7)			(0.4)
Ending balance, value	$ 0.9	$ 0.9	$ 0.9	$ 1	$ 0.9	$ 0.9	$ 0.9	$ 1
Ending balance, shares	93	93.5	94.1	95.1	95	95	93	95.1
Capital in excess of par value
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	$ 0	$ 0	$ 0	$ 5.2	$ 0	$ 9.1	$ 0	$ 9.1
Share-based compensation	4.2	6.8	7.1	7	5.2	6
Repurchase of ordinary shares, value	(4.2)	(6.8)	(7.1)			(15.1)
Ending balance, value	0	0	0	12.2	5.2	0	0	12.2
Retained earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	892.7	871.6	873.6	675.8	581.9	544.4	873.6	544.4
Net earnings	131.6	109.3	80.2	116	113.9	72.2
Other comprehensive income (loss), net of tax	0	0	0	0	0	0
Dividends to ordinary shareholders	(25.1)	(25.2)	(25.5)	(20)	(20)	(19.9)
Repurchase of ordinary shares, value	(41.9)	(63)	(56.7)			(14.8)
Other	(0.2)			0.1
Ending balance, value	957.1	892.7	871.6	771.9	675.8	581.9	957.1	771.9
Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	(233.1)	(238.8)	(223.5)	(175.9)	(126.8)	(152.9)	(223.5)	(152.9)
Other comprehensive income (loss), net of tax	(39.9)	5.7	(15.3)	(12.1)	(49.2)	26.1
Other				(0.2)	0.1
Ending balance, value	(273)	(233.1)	(238.8)	(188.2)	(175.9)	(126.8)	(273)	(188.2)
Noncontrolling interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	3.1	3.7	3	2.7	5.1	3.9	3	3.9
Net earnings	0.1	0.1	0.1	0.1	0.1	0.2
Other comprehensive income (loss), net of tax	(1)	(0.6)	0.6	(0.7)	(2.3)	1
Dividends to noncontrolling interests		(0.1)			(0.2)
Ending balance, value	$ 2.2	$ 3.1	$ 3.7	$ 2.1	$ 2.7	$ 5.1	$ 2.2	$ 2.1

Equity (Schedule of Accumulated

Equity (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Loss Roll Forward
Balance at December 31:	$ (223.5)	$ (152.9)
Other comprehensive income (loss) before reclassifications	(48.9)	(33.5)
Amounts reclassified from accumulated other comprehensive loss	(1.5)	(0.5)
Tax benefit (expense)	0.9	(1.3)
Balance at June 30:	(273)	(188.2)
Cash flow hedges
Accumulated Other Comprehensive Loss Roll Forward
Balance at December 31:	6.1	3.8
Other comprehensive income (loss) before reclassifications	(0.5)	6.3
Amounts reclassified from accumulated other comprehensive loss	(6.2)	(3.8)
Tax benefit (expense)	1.7	(0.7)
Balance at June 30:	1.1	5.6
Pension and OPEB Items
Accumulated Other Comprehensive Loss Roll Forward
Balance at December 31:	(123.2)	(107.6)
Other comprehensive income (loss) before reclassifications	2.8	2.4
Amounts reclassified from accumulated other comprehensive loss	4.7	3.3
Tax benefit (expense)	(0.8)	(0.6)
Balance at June 30:	(116.5)	(102.5)
Foreign Currency Items
Accumulated Other Comprehensive Loss Roll Forward
Balance at December 31:	(106.4)	(49.1)
Other comprehensive income (loss) before reclassifications	(51.2)	(42.2)
Amounts reclassified from accumulated other comprehensive loss	0	0
Tax benefit (expense)	0	0
Balance at June 30:	$ (157.6)	$ (91.3)

Share-Based Compensation (Share

Share-Based Compensation (Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share based compensation expense (income)	$ 3.6	$ 5.3	$ 18.4	$ 17.4
Tax benefit	(0.5)	(1)	(2.3)	(1.9)
After-tax expense	3.1	4.3	16.1	15.5
Stock options
Share based compensation expense (income)	0.4	1	3.2	3.9
Restricted Stock Units (RSUs)
Share based compensation expense (income)	1.6	2.6	8	8.1
Performance Share Units (PSUs)
Share based compensation expense (income)	1.7	1.1	5.1	4.2
Deferred compensation
Share based compensation expense (income)	$ (0.1)	$ 0.6	$ 2.1	$ 1.2

Share-Based Compensation (Grant

Share-Based Compensation (Grants of Stock Options and RSUs) (Details) - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Stock options
Equity awards, granted, in shares	195,675	160,849
Weighted-average fair value per award, in dollars per share	$ 19.58	$ 21.29
Restricted Stock Units (RSUs)
Equity awards, granted, in shares	129,835	121,928
Weighted-average fair value per award, in dollars per share	$ 90.91	$ 84.86

Share-Based Compensation (Avera

Share-Based Compensation (Average Fair Value of Stock Options Granted, Assumptions) (Details)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Payment Arrangement, Noncash Expense [Abstract]
Dividend yield	1.23%	0.97%
Volatility	21.44%	22.38%
Risk-free rate of return	2.53%	2.75%
Expected life, in years	6 years	6 years

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) shares in Millions	9 Months Ended
	Sep. 30, 2019shares
Performance Share Units (PSUs)
Maximum award level for eligible employees (in shares)	0.1

Restructuring Activities (Narra

Restructuring Activities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring and Related Cost, Incurred Cost			$ 14.2
Qualified restructuring
Restructuring and Related Cost, Incurred Cost	$ 4.4	$ 2.7	14.2	$ 4.1
Non-qualified restructuring
Restructuring and Related Cost, Incurred Cost	0.4		4.5
Turkey Restructuring Plan
Remaining costs for Turkey Restructuring, not expected to exceed	5		5
Turkey Restructuring Plan | Qualified restructuring
Restructuring and Related Cost, Incurred Cost	$ 3.6		7.2
Turkey Restructuring Plan | Non-qualified restructuring
Restructuring and Related Cost, Incurred Cost			$ 3.1

Restructuring Activities (Sched

Restructuring Activities (Schedule of Changes in Restructuring Reserve) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	$ 2.1
Additions, net of reversals	14.2
Cash and non-cash uses	(12.9)
Restructuring reserve ending balance	$ 3.4

Other, Net (Details)

Other, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income and Expenses [Abstract]
Interest income	$ (0.4)	$ (0.4)	$ (1.1)	$ (0.7)
Foreign currency exchange loss (gain)	0.8	(0.8)	1.1	(1)
Loss (earnings) from equity method investments	0.1	0	0.5	(0.1)
Net periodic pension and postretirement benefit cost (income), less service cost	1.4	(0.7)	3.2	(2.3)
Other	0.1	0	(2.1)	0.2
Other expense (income), net	$ 2	$ (1.9)	$ 1.6	$ (3.9)

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate (percent)	12.50%	10.80%	14.90%	13.10%

Earnings Per Share (EPS) (Detai

Earnings Per Share (EPS) (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Weighted-average number of basic shares	93.3	95.1	93.8	95.1
Shares issuable under incentive stock plans	0.7	0.7	0.7	0.7
Weighted-average number of diluted shares	94	95.8	94.5	95.8

Earnings Per Share (EPS) (Narra

Earnings Per Share (EPS) (Narrative) (Details) shares in Millions	9 Months Ended
	Sep. 30, 2019shares
Earnings Per Share [Abstract]
Antidilutive stock options excluded from computation of weighted-average diluted shares outstanding	0.2

Net Revenues (Details)

Net Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Net revenues	$ 748.3	$ 711.5	$ 2,134.5	$ 2,029.3
Americas
Disaggregation of Revenue [Line Items]
Net revenues	567.8	530.1	1,588.2	1,495.9
EMEIA
Disaggregation of Revenue [Line Items]
Net revenues	137.8	134.4	422.9	432.5
Asia Pacific
Disaggregation of Revenue [Line Items]
Net revenues	42.7	47	123.4	100.9
Product
Disaggregation of Revenue [Line Items]
Net revenues	739	704.4	2,111.7	2,014.2
Product | Americas
Disaggregation of Revenue [Line Items]
Net revenues	567.8	530.1	1,588.2	1,495.9
Product | EMEIA
Disaggregation of Revenue [Line Items]
Net revenues	130.5	129.5	406.3	419.6
Product | Asia Pacific
Disaggregation of Revenue [Line Items]
Net revenues	40.7	44.8	117.2	98.7
Service
Disaggregation of Revenue [Line Items]
Net revenues	9.3	7.1	22.8	15.1
Service | Americas
Disaggregation of Revenue [Line Items]
Net revenues	0	0	0	0
Service | EMEIA
Disaggregation of Revenue [Line Items]
Net revenues	7.3	4.9	16.6	12.9
Service | Asia Pacific
Disaggregation of Revenue [Line Items]
Net revenues	$ 2	$ 2.2	$ 6.2	$ 2.2

Business Segment Information (S

Business Segment Information (Summary of Operations by Reportable Segments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Net revenues	$ 748.3	$ 711.5	$ 2,134.5	$ 2,029.3
Operating income	168.1	142.3	421.8	384.4
Interest expense	15.6	14	42.7	40.3
Other expense (income), net	2	(1.9)	1.6	(3.9)
Earnings before income taxes	150.5	130.2	377.5	348
Americas
Segment Reporting Information [Line Items]
Net revenues	567.8	530.1	1,588.2	1,495.9
EMEIA
Segment Reporting Information [Line Items]
Net revenues	137.8	134.4	422.9	432.5
Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	42.7	47	123.4	100.9
Operating Segments
Segment Reporting Information [Line Items]
Operating income	187.2	162.9	481.5	443.6
Operating Segments | Americas
Segment Reporting Information [Line Items]
Operating income	175.6	153.8	457.7	415.5
Operating Segments | EMEIA
Segment Reporting Information [Line Items]
Operating income	7.5	7.6	19.9	27.3
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Operating income	4.1	1.5	3.9	0.8
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Operating income	$ (19.1)	$ (20.6)	$ (59.7)	$ (59.2)

Business Segment Information Na

Business Segment Information Narrative (Details)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Number of Reportable Segments	3

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Expense for environmental remediation	$ 0.6	$ 0.4	$ 1.6	$ 1.7
Reserves for environmental matters	19.8		19.8		$ 22.6
Reserves for environmental matters, current	4.4		4.4		5.6
Segment, Discontinued Operations
Reserves for environmental matters	$ 4.5		$ 4.5		$ 6.3

Commitments and Contingencies_3

Commitments and Contingencies (Product Warranty Liability) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Movement in Standard Product Warranty Liability [Roll Forward]
Balance at beginning of period	$ 14.5	$ 14.1
Reductions for payments	(6.6)	(5.9)
Accruals for warranties issued during the current period	8.4	6.1
Changes to accruals related to preexisting warranties	(0.4)	(0.1)
Acquisitions	0	0.5
Currency translation	(0.2)	(0.1)
Balance at end of period	$ 15.7	$ 14.6

Statement of Comprehensive Inco

Statement of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Guarantor Obligations [Line Items]
Net revenues	$ 748.3			$ 711.5			$ 2,134.5	$ 2,029.3
Cost of goods sold	412.8			402.1			1,201.4	1,156.5
Selling and administrative expenses	167.4			167.1			511.3	488.4
Operating (loss) income	168.1			142.3			421.8	384.4
Equity earnings (loss) in affiliates, net of tax	0			0			0	0
Interest expense	15.6			14			42.7	40.3
Intercompany interest and fees	0			0			0	0
Other expense (income), net	2			(1.9)			1.6	(3.9)
Earnings before income taxes	150.5			130.2			377.5	348
Provision (benefit) for income taxes	18.8			14.1			56.1	45.5
Net earnings (loss)	131.7	$ 109.4	$ 80.3	116.1	$ 114	$ 72.4	321.4	302.5
Less: Net earnings attributable to noncontrolling interests	0.1			0.1			0.3	0.4
Net earnings (loss) attributable to Allegion plc	131.6			116			321.1	302.1
Total comprehensive income (loss)	90.8			103.3			270.9	265.3
Less: Total comprehensive income (loss) attributable to noncontrolling interests	(0.9)			(0.6)			(0.7)	(1.6)
Total comprehensive income (loss) attributable to Allegion plc	91.7			103.9			271.6	266.9
Allegion plc
Guarantor Obligations [Line Items]
Net revenues	0			0			0	0
Cost of goods sold	0			0			0	0
Selling and administrative expenses	1.6			1.3			4.7	4.6
Operating (loss) income	(1.6)			(1.3)			(4.7)	(4.6)
Equity earnings (loss) in affiliates, net of tax	145.2			124.5			354.2	327
Interest expense	9.5			7.2			24.2	20.3
Intercompany interest and fees	2.5			0			4.2	0
Other expense (income), net	0			0			0	0
Earnings before income taxes	131.6			116			321.1	302.1
Provision (benefit) for income taxes	0			0			0	0
Net earnings (loss)	131.6			116			321.1	302.1
Less: Net earnings attributable to noncontrolling interests	0			0			0	0
Net earnings (loss) attributable to Allegion plc	131.6			116			321.1	302.1
Total comprehensive income (loss)	91.7			103.9			271.6	266.9
Less: Total comprehensive income (loss) attributable to noncontrolling interests	0			0			0	0
Total comprehensive income (loss) attributable to Allegion plc	91.7			103.9			271.6	266.9
Allegion US Holding
Guarantor Obligations [Line Items]
Net revenues	0			0			0	0
Cost of goods sold	0			0			0	0
Selling and administrative expenses	0			0			0	0
Operating (loss) income	0			0			0	0
Equity earnings (loss) in affiliates, net of tax	88.9			73.2			196.9	146.4
Interest expense	6			6.4			18.3	19.4
Intercompany interest and fees	27			26.3			79.8	78.2
Other expense (income), net	0			0			0	0
Earnings before income taxes	55.9			40.5			98.8	48.8
Provision (benefit) for income taxes	(8.1)			(7.7)			(24.1)	(20)
Net earnings (loss)	64			48.2			122.9	68.8
Less: Net earnings attributable to noncontrolling interests	0			0			0	0
Net earnings (loss) attributable to Allegion plc	64			48.2			122.9	68.8
Total comprehensive income (loss)	63			48.1			118.4	70.7
Less: Total comprehensive income (loss) attributable to noncontrolling interests	0			0			0	0
Total comprehensive income (loss) attributable to Allegion plc	63			48.1			118.4	70.7
Other subsidiaries
Guarantor Obligations [Line Items]
Net revenues	748.3			711.5			2,134.5	2,029.3
Cost of goods sold	412.8			402.1			1,201.4	1,156.5
Selling and administrative expenses	165.8			165.8			506.6	483.8
Operating (loss) income	169.7			143.6			426.5	389
Equity earnings (loss) in affiliates, net of tax	0			0			0	0
Interest expense	0.1			0.4			0.2	0.6
Intercompany interest and fees	(29.5)			(26.3)			(84)	(78.2)
Other expense (income), net	2			(1.9)			1.6	(3.9)
Earnings before income taxes	197.1			171.4			508.7	470.5
Provision (benefit) for income taxes	26.9			21.8			80.2	65.5
Net earnings (loss)	170.2			149.6			428.5	405
Less: Net earnings attributable to noncontrolling interests	0.1			0.1			0.3	0.4
Net earnings (loss) attributable to Allegion plc	170.1			149.5			428.2	404.6
Total comprehensive income (loss)	130.2			142.5			381.4	365.8
Less: Total comprehensive income (loss) attributable to noncontrolling interests	(0.9)			(0.6)			(0.7)	(1.6)
Total comprehensive income (loss) attributable to Allegion plc	131.1			143.1			382.1	367.4
Consolidating adjustments
Guarantor Obligations [Line Items]
Net revenues	0			0			0	0
Cost of goods sold	0			0			0	0
Selling and administrative expenses	0			0			0	0
Operating (loss) income	0			0			0	0
Equity earnings (loss) in affiliates, net of tax	(234.1)			(197.7)			(551.1)	(473.4)
Interest expense	0			0			0	0
Intercompany interest and fees	0			0			0	0
Other expense (income), net	0			0			0	0
Earnings before income taxes	(234.1)			(197.7)			(551.1)	(473.4)
Provision (benefit) for income taxes	0			0			0	0
Net earnings (loss)	(234.1)			(197.7)			(551.1)	(473.4)
Less: Net earnings attributable to noncontrolling interests	0			0			0	0
Net earnings (loss) attributable to Allegion plc	(234.1)			(197.7)			(551.1)	(473.4)
Total comprehensive income (loss)	(194.1)			(191.2)			(500.5)	(438.1)
Less: Total comprehensive income (loss) attributable to noncontrolling interests	0			0			0	0
Total comprehensive income (loss) attributable to Allegion plc	$ (194.1)			$ (191.2)			$ (500.5)	$ (438.1)

Balance Sheet (Details)

Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 232.9			$ 283.8
Restricted cash	3.4			6.8
Accounts and notes receivable, net	367.5			324.9
Inventories	293.9			280.3
Other current assets	32.5			35
Assets held for sale	2.9			0.8
Accounts and notes receivable affiliates	0			0
Total current assets	933.1			931.6
Investment in affiliates	0			0
Property, plant and equipment, net	281.9			276.7
Intangible assets, net	1,372.1			1,430.1
Notes receivable affiliates	0			0
Other noncurrent assets	278.3			171.8
Total assets	2,865.4			2,810.2
Current liabilities:
Accounts payable and other current liabilities	491.1			485.5
Short-term borrowings and current maturities of long-term debt	0.1			35.3
Accounts and notes payable affiliates	0			0
Total current liabilities	491.2			520.8
Long-term debt	1,427			1,409.5
Notes payable affiliates	0			0
Other noncurrent liabilities	260			225.9
Total liabilities	2,178.2			2,156.2
Equity:
Total shareholders' equity (deficit)	685			651
Noncontrolling interests	2.2			3
Total equity (deficit)	687.2	$ 663.6	$ 637.4	654	$ 599	$ 508.7	$ 461.1	$ 405.5
Total liabilities and equity	2,865.4			2,810.2
Allegion plc
Current assets:
Cash and cash equivalents	16.6			4.2
Restricted cash	0			0
Accounts and notes receivable, net	0			0
Inventories	0			0
Other current assets	1.2			0.5
Assets held for sale	0			0
Accounts and notes receivable affiliates	0			0
Total current assets	17.8			4.7
Investment in affiliates	1,571.6			1,265.8
Property, plant and equipment, net	0			0
Intangible assets, net	0			0
Notes receivable affiliates	31.2			30.8
Other noncurrent assets	4.8			4
Total assets	1,625.4			1,305.3
Current liabilities:
Accounts payable and other current liabilities	3.8			2
Short-term borrowings and current maturities of long-term debt	0			35
Accounts and notes payable affiliates	4.3			0.3
Total current liabilities	8.1			37.3
Long-term debt	632.8			615.8
Notes payable affiliates	297			0
Other noncurrent liabilities	2.5			1.2
Total liabilities	940.4			654.3
Equity:
Total shareholders' equity (deficit)	685			651
Noncontrolling interests	0			0
Total equity (deficit)	685			651
Total liabilities and equity	1,625.4			1,305.3
Allegion US Holding
Current assets:
Cash and cash equivalents	2.4			1
Restricted cash	0			0
Accounts and notes receivable, net	0			0
Inventories	0			0
Other current assets	25.8			33.7
Assets held for sale	0			0
Accounts and notes receivable affiliates	510.1			816.2
Total current assets	538.3			850.9
Investment in affiliates	873.7			718.2
Property, plant and equipment, net	0			0
Intangible assets, net	0			0
Notes receivable affiliates	1,404.8			1,061.2
Other noncurrent assets	56.3			61.2
Total assets	2,873.1			2,691.5
Current liabilities:
Accounts payable and other current liabilities	13.5			6.8
Short-term borrowings and current maturities of long-term debt	0			0
Accounts and notes payable affiliates	403.8			369.5
Total current liabilities	417.3			376.3
Long-term debt	793.5			792.8
Notes payable affiliates	2,571.4			2,553.4
Other noncurrent liabilities	6.1			5.5
Total liabilities	3,788.3			3,728
Equity:
Total shareholders' equity (deficit)	(915.2)			(1,036.5)
Noncontrolling interests	0			0
Total equity (deficit)	(915.2)			(1,036.5)
Total liabilities and equity	2,873.1			2,691.5
Consolidating adjustments
Current assets:
Cash and cash equivalents	0			0
Restricted cash	0			0
Accounts and notes receivable, net	0			0
Inventories	0			0
Other current assets	(14.3)			(18.3)
Assets held for sale	0			0
Accounts and notes receivable affiliates	(918.2)			(1,186)
Total current assets	(932.5)			(1,204.3)
Investment in affiliates	(2,445.3)			(1,984)
Property, plant and equipment, net	0			0
Intangible assets, net	0			0
Notes receivable affiliates	(4,304.4)			(3,645.4)
Other noncurrent assets	0			0
Total assets	(7,682.2)			(6,833.7)
Current liabilities:
Accounts payable and other current liabilities	(14.3)			(18.3)
Short-term borrowings and current maturities of long-term debt	0			0
Accounts and notes payable affiliates	(918.2)			(1,186)
Total current liabilities	(932.5)			(1,204.3)
Long-term debt	0			0
Notes payable affiliates	(4,304.4)			(3,645.4)
Other noncurrent liabilities	0			0
Total liabilities	(5,236.9)			(4,849.7)
Equity:
Total shareholders' equity (deficit)	(2,445.3)			(1,984)
Noncontrolling interests	0			0
Total equity (deficit)	(2,445.3)			(1,984)
Total liabilities and equity	(7,682.2)			(6,833.7)
Other subsidiaries
Current assets:
Cash and cash equivalents	213.9			278.6
Restricted cash	3.4			6.8
Accounts and notes receivable, net	367.5			324.9
Inventories	293.9			280.3
Other current assets	19.8			19.1
Assets held for sale	2.9			0.8
Accounts and notes receivable affiliates	408.1			369.8
Total current assets	1,309.5			1,280.3
Investment in affiliates	0			0
Property, plant and equipment, net	281.9			276.7
Intangible assets, net	1,372.1			1,430.1
Notes receivable affiliates	2,868.4			2,553.4
Other noncurrent assets	217.2			106.6
Total assets	6,049.1			5,647.1
Current liabilities:
Accounts payable and other current liabilities	488.1			495
Short-term borrowings and current maturities of long-term debt	0.1			0.3
Accounts and notes payable affiliates	510.1			816.2
Total current liabilities	998.3			1,311.5
Long-term debt	0.7			0.9
Notes payable affiliates	1,436			1,092
Other noncurrent liabilities	251.4			219.2
Total liabilities	2,686.4			2,623.6
Equity:
Total shareholders' equity (deficit)	3,360.5			3,020.5
Noncontrolling interests	2.2			3
Total equity (deficit)	3,362.7			3,023.5
Total liabilities and equity	$ 6,049.1			$ 5,647.1

Statement of Cash Flow (Details

Statement of Cash Flow (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities					$ 279.4	$ 260.4
Cash flows from investing activities:
Capital expenditures					(49.4)	(31.8)
Acquisition of and equity investments in businesses, net of cash acquired					(4.6)	(375.8)
Other investing activities, net					(2)	(1.1)
Net cash (used in) provided by investing activities					(56)	(408.7)
Cash flows from financing activities:
Debt repayments, net					(18)	(27.4)
Debt Issuance Costs					(3)	0
Net inter-company proceeds (payments)					0	0
Dividends paid					0	0
Dividends paid to ordinary shareholders					(75.5)	(59.6)
Repurchase of ordinary shares	$ (46.1)	$ (69.8)	$ (63.8)	$ (30)	(179.7)	(30)
Other financing activities, net					1.8	0.1
Net cash used in financing activities					(274.4)	(116.9)
Effect of exchange rate changes on cash, cash equivalents and restricted cash					(3.3)	(4.5)
Net increase (decrease) in cash, cash equivalents and restricted cash					(54.3)	(269.7)
Cash, cash equivalents and restricted cash - beginning of period			290.6	466.2	290.6	466.2
Cash, cash equivalents and restricted cash - end of period	236.3				236.3	196.5
Allegion plc
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities					(10.4)	135.4
Cash flows from investing activities:
Capital expenditures					0	0
Acquisition of and equity investments in businesses, net of cash acquired					0	0
Other investing activities, net					0	0
Net cash (used in) provided by investing activities					0	0
Cash flows from financing activities:
Debt repayments, net					(17.5)	(26.3)
Debt Issuance Costs					(3)
Net inter-company proceeds (payments)					296.6	(22)
Dividends paid					0	0
Dividends paid to ordinary shareholders					(75.5)	(59.6)
Repurchase of ordinary shares					(179.7)	(30)
Other financing activities, net					1.9	2.4
Net cash used in financing activities					22.8	(135.5)
Effect of exchange rate changes on cash, cash equivalents and restricted cash					0	0
Net increase (decrease) in cash, cash equivalents and restricted cash					12.4	(0.1)
Cash, cash equivalents and restricted cash - beginning of period			4.2	0.7	4.2	0.7
Cash, cash equivalents and restricted cash - end of period	16.6				16.6	0.6
Allegion US Holding
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities					(43.2)	(68.5)
Cash flows from investing activities:
Capital expenditures					0	0
Acquisition of and equity investments in businesses, net of cash acquired					0	(247.1)
Other investing activities, net					(1.5)	0
Net cash (used in) provided by investing activities					(1.5)	(247.1)
Cash flows from financing activities:
Debt repayments, net					0	0
Debt Issuance Costs					0
Net inter-company proceeds (payments)					46	329.3
Dividends paid					0	0
Dividends paid to ordinary shareholders					0	0
Repurchase of ordinary shares					0	0
Other financing activities, net					0.1	0
Net cash used in financing activities					46.1	329.3
Effect of exchange rate changes on cash, cash equivalents and restricted cash					0	0
Net increase (decrease) in cash, cash equivalents and restricted cash					1.4	13.7
Cash, cash equivalents and restricted cash - beginning of period			1	0.3	1	0.3
Cash, cash equivalents and restricted cash - end of period	2.4				2.4	14
Consolidating adjustments
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities					(77.9)	(209)
Cash flows from investing activities:
Capital expenditures					0	0
Acquisition of and equity investments in businesses, net of cash acquired					0	0
Other investing activities, net					1.7	0
Net cash (used in) provided by investing activities					1.7	0
Cash flows from financing activities:
Debt repayments, net					0	0
Debt Issuance Costs					0
Net inter-company proceeds (payments)					0	0
Dividends paid					77.9	209
Dividends paid to ordinary shareholders					0	0
Repurchase of ordinary shares					0	0
Other financing activities, net					(1.7)	0
Net cash used in financing activities					76.2	209
Effect of exchange rate changes on cash, cash equivalents and restricted cash					0	0
Net increase (decrease) in cash, cash equivalents and restricted cash					0	0
Cash, cash equivalents and restricted cash - beginning of period			0	0	0	0
Cash, cash equivalents and restricted cash - end of period	0				0	0
Other subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities					410.9	402.5
Cash flows from investing activities:
Capital expenditures					(49.4)	(31.8)
Acquisition of and equity investments in businesses, net of cash acquired					(4.6)	(128.7)
Other investing activities, net					(2.2)	(1.1)
Net cash (used in) provided by investing activities					(56.2)	(161.6)
Cash flows from financing activities:
Debt repayments, net					(0.5)	(1.1)
Debt Issuance Costs					0
Net inter-company proceeds (payments)					(342.6)	(307.3)
Dividends paid					(77.9)	(209)
Dividends paid to ordinary shareholders					0	0
Repurchase of ordinary shares					0	0
Other financing activities, net					1.5	(2.3)
Net cash used in financing activities					(419.5)	(519.7)
Effect of exchange rate changes on cash, cash equivalents and restricted cash					(3.3)	(4.5)
Net increase (decrease) in cash, cash equivalents and restricted cash					(68.1)	(283.3)
Cash, cash equivalents and restricted cash - beginning of period			$ 285.4	$ 465.2	285.4	465.2
Cash, cash equivalents and restricted cash - end of period	$ 217.3				$ 217.3	$ 181.9