Allegion (ALLE) 10-Q 30 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	9 Months Ended
	Sep. 30, 2014	Oct. 27, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'Allegion plc	'
Entity Central Index Key	'0001579241	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	95,728,586

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net revenues	$546.70	$529	$1,544.80	$1,525.90
Cost of goods sold	-310.6	-290.6	-890.6	-883
Selling and administrative expenses	-130.5	-122.2	-391.5	-357.2
Goodwill impairment charge	0	137.6	0	137.6
Operating income (loss)	105.6	-21.4	262.7	148.1
Interest expense	-12.7	-0.5	-38.3	-1.4
Other (gain) loss, net	-2	0.2	-3.1	6.9
Earnings (loss) before income taxes	94.9	-22.1	227.5	139.8
Provision for income taxes	-27.2	-45.5	-66.6	-102.4
Earnings (loss) from continuing operations	67.7	-67.6	160.9	37.4
Discontinued operations, net of tax	-2.1	-0.4	-10.9	-1.9
Net earnings (loss)	65.6	-68	150	35.5
Less: Net earnings attributable to noncontrolling interests	-5.3	-10.1	-10.6	-13.9
Net earnings (loss) attributable to Allegion plc	60.3	-78.1	139.4	21.6
Amounts attributable to Allegion plc ordinary shareholders:	'	'	'	'
Continuing operations	62.4	-77.7	150.3	23.5
Discontinued operations	-2.1	-0.4	-10.9	-1.9
Net earnings (loss) attributable to Allegion plc	60.3	-78.1	139.4	21.6
Basic:	'	'	'	'
Continuing operations (in dollars per share)	$0.65	($0.81)	$1.56	$0.24
Discontinued operations (in dollars per share)	($0.02)	$0	($0.11)	($0.01)
Net earnings (loss) (in dollars per share)	$0.63	($0.81)	$1.45	$0.23
Diluted:	'	'	'	'
Continuing operations (in dollars per share)	$0.64	($0.81)	$1.54	$0.24
Discontinued operations (in dollars per share)	($0.02)	$0	($0.11)	($0.01)
Net earnings (loss) (in dollars per share)	$0.62	($0.81)	$1.43	$0.23
Weighted-average shares outstanding	'	'	'	'
Basic (in shares)	95.9	96	96.2	96
Diluted (in shares)	96.9	96	97.3	96
Dividends declared per ordinary share (in dollars per share)	$0.08	$0	$0.24	$0
Total comprehensive income (loss)	40.5	-107.2	116.6	-12.3
Less: Total comprehensive income attributable to noncontrolling interests	5.7	10.3	10.1	14.8
Total comprehensive income (loss) attributable to Allegion plc	$34.80	($117.50)	$106.50	($27.10)

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$251.40	$227.40
Restricted cash	0	40.2
Accounts and notes receivable, net	287.3	260
Costs in excess of billings on uncompleted contracts	153.6	158.8
Inventories	180.7	153.6
Other current assets	61	74.8
Assets held for sale	0	11.2
Total current assets	934	926
Property, plant and equipment, net	212.5	200.2
Goodwill	509.9	504.9
Intangible assets, net	133.1	146.1
Other noncurrent assets	202.7	202.7
Total assets	1,992.20	1,979.90
LIABILITIES AND EQUITY	'	'
Accounts payable	222.9	211.3
Accrued expenses and other current liabilities	211	207.3
Short-term borrowings and current maturities of long-term debt	30.3	71.9
Total current liabilities	464.2	490.5
Long-term debt	1,249.20	1,272
Other noncurrent liabilities	272.8	273.1
Total liabilities	1,986.20	2,035.60
Equity:	'	'
Ordinary shares	1	1
Capital in excess of par value	2.6	8.4
Retained earnings	95.4	0.4
Accumulated other comprehensive income (loss)	-129.7	-96.6
Total Allegion plc shareholders’ equity	-30.7	-86.8
Noncontrolling interests	36.7	31.1
Total equity	6	-55.7
Total liabilities and equity	$1,992.20	$1,979.90

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Statement of Cash Flows [Abstract]	'	'
Net earnings (loss)	$150	$35.50
Cash flows from operating activities:	'	'
Discontinued operations, net of tax	10.9	1.9
Adjustments to arrive at net cash provided by (used in) operating activities:	'	'
Gain (Loss) on Disposition of Property Plant Equipment	0	21.3
Deferred Income Tax Expense (Benefit)	2.1	0
Excess Tax Benefit from Share-based Compensation, Operating Activities	3.8	0
Goodwill impairment charge	0	137.6
Depreciation and amortization	36.5	34.2
Changes in assets and liabilities and other non-cash items	-20.9	-31.2
Net cash provided by continuing operating activities	174.8	156.7
Net cash provided by (used in) discontinued operating activities	-2.8	0.9
Net cash provided by operating activities	172	157.6
Cash flows from financing activities:	'	'
Net debt repayments	-63.1	-0.2
Dividends paid to ordinary shareholders	22.6	0
Repurchase of ordinary shares	-50.3	0
Net transfers to former Parent and affiliates	0	-118.5
Other financing activities, net	15.4	-5.2
Net cash used in continuing financing activities	-120.6	-123.9
Capital expenditures	-39.8	-12
Acquisition of businesses, net of cash acquired	-23	0
Other investing activities, net	41.9	24.4
Net cash provided by (used in) investing activities	-20.9	12.4
Effect of exchange rate changes on cash and cash equivalents	-6.5	4.9
Net increase in cash and cash equivalents	24	51
Cash and cash equivalents - beginning of period	227.4	317.5
Cash and cash equivalents - end of period	$251.40	$368.50

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
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 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, 2013. In the opinion of management, the accompanying condensed and consolidated financial statements contain all adjustments, which include normal recurring adjustments, necessary to present fairly the consolidated unaudited results for the interim periods presented.
	On September 1, 2014 the Company completed the sale of its United Kingdom (UK) Door businesses to an affiliate of Alcyon Financial Limited, a financial investment firm. Historical results of the component have been reclassified to discontinued operations for all periods presented. See Note 16 - Discontinued Operations for more information.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	Recently Adopted Accounting Pronouncements:
	In February 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2013-04, "Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date." ASU 2013-04 provides guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements where the total obligation is fixed at the reporting date, and for which no specific guidance currently exists. This new guidance is effective for annual reporting periods beginning on or after December 15, 2013 and subsequent interim periods. The requirements of ASU 2013-04 do not have a significant impact on the Condensed and Consolidated Financial Statements.
	In March 2013, the FASB issued ASU 2013-05, "Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity." ASU 2013-05 clarifies the application of GAAP to the release of cumulative translation adjustments related to changes of ownership in or within foreign entities, including step acquisitions. This new guidance is effective for annual reporting periods beginning on or after December 15, 2013 and subsequent interim periods. The requirements of ASU 2013-04 do not have a significant impact on the Condensed and Consolidated Financial Statements.
	In July 2013, the FASB issued ASU 2013-11 Income Taxes (Topic 740), "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss or a Tax Credit Carryforward Exists." With certain exceptions, ASU 2013-11 requires entities to present an unrecognized tax benefit, or portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. The guidance is effective for interim and annual periods beginning after December 15, 2013 on either a prospective or retrospective basis with early adoption permitted. The requirements of ASU 2013-11 do not have a significant impact on the Condensed and Consolidated Financial Statements.
	Recently Issued Accounting Pronouncements
	In April 2014, the FASB issued ASU 2014-08 "Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity," which amends the definition of a discontinued operation in Accounting Standards Codification Topic 205-20 (Presentation of Financial Statements — Discontinued Operations) and requires entities to disclose additional information about disposal transactions that do not meet the discontinued operations criteria. ASU 2014-08 redefines a discontinued operation as a component or group of components of an entity that (1) has been disposed of by sale or other than by sale or is classified as held for sale and (2) represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. According to the ASU, a strategic shift that has (or will have) a major effect on an entity’s operations and results includes the disposal of a major geographical area, a major line of business, a major equity investment, or other major parts of an entity. The ASU is effective prospectively for disposals or components classified as held for sale in periods on or after December 15, 2014. The Company is assessing what impact, if any, the ASU 2014-08 will have on the Condensed and Consolidated Financial Statements.
	In May 2014, the FASB issued ASU 2014-09 "Revenue from Contracts with Customers." ASU 2014-09 is the result of a joint project between the FASB and International Accounting Standards Board ("IASB") to clarify the principles for recognizing revenue and to develop a common revenue standard for GAAP and International Financial Reporting Standards ("IFRS") that would remove inconsistencies and weaknesses in revenue requirements, provide a more robust framework for addressing revenue issues, improve comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets, provide more useful information to users of financial statements through improved disclosure requirements and simplify the preparation of financial statements by reducing the number of requirements to which an entity must refer. The ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is assessing what impact, if any, ASU 2014-09 will have on the Condensed and Consolidated Financial Statements.
	In June 2014, the FASB issued ASU 2014-12 "Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period." ASU 2014-12 requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. The ASU is effective for annual and interim reporting periods beginning after December 15, 2015, including interim periods within that reporting period. Early application is permitted. The requirements of ASU 2014-12 are not expected to have a significant impact on the Condensed and Consolidated Financial Statements.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2014
Inventory, Net [Abstract]	'
Inventories	'
	Inventories
	Depending on the business, U.S. inventories are stated at the lower of cost or market using the last-in, first-out (LIFO) method or the lower of cost or market using the first-in, first-out (FIFO) method. Non-U.S. inventories are primarily stated at the lower of cost or market using the FIFO method.
	The major classes of inventory were as follows:
	In millions	September 30,			December 31,
		2014			2013
	Raw materials	$	62.8		$	68.3
	Work-in-process	46.9			34.5
	Finished goods	105.4			84.6
		215.1			187.4
	LIFO reserve	(34.4		)	(33.8		)
	Total	$	180.7		$	153.6

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2014
Goodwill Disclosure [Abstract]	'
Goodwill	'
	Goodwill
	The changes in the carrying amount of goodwill for the nine months ended September 30, 2014 were as follows:
	In millions	Americas		EMEIA			Asia Pacific			Total
	December 31, 2013 (gross)	$	362.8	$	540		$	87.6		$	990.4
	Acquisitions	2.3		—			10.3			12.6
	Currency translation	—		(4.6		)	(3.0		)	(7.6		)
	September 30, 2014 (gross)	365.1		535.4			94.9			995.4
	Accumulated impairment *	—		(478.6		)	(6.9		)	(485.5		)
	Goodwill (net)	$	365.1	$	56.8		$	88		$	509.9
	* The Company recorded a $137.6 million goodwill impairment charge in the EMEIA segment in the third quarter of 2013.

Intangible_Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2014
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, 2014							December 31, 2013
	In millions	Gross carrying amount		Accumulated amortization			Net carrying amount		Gross carrying amount		Accumulated amortization			Net carrying amount
	Completed technologies/patents	$	28.5	$	(23.3	)	$	5.2	$	26.4	$	(23.6	)	$	2.8
	Customer relationships	99.3		(38.2		)	61.1		107.8		(38.1		)	69.7
	Trademarks (finite-lived)	93.2		(36.6		)	56.6		101.4		(36.8		)	64.6
	Other	10.6		(10.6		)	—		13.4		(13.4		)	—
	Total finite-lived intangible assets	231.6		$	(108.7	)	122.9		249		$	(111.9	)	137.1
	Trademarks (indefinite-lived)	10.2					10.2		9					9
	Total	$	241.8				$	133.1	$	258				$	146.1
	Intangible asset amortization expense was $7.4 million and $7.1 million for the nine months ended September 30, 2014 and 2013, respectively. Future estimated amortization expense on existing intangible assets in each of the next five years amounts to approximately $10.0 million for full year 2014, $8.0 million for 2015, $8.0 million for 2016, $8.0 million for 2017, and $8.0 million for 2018.

Acquisition

Acquisition	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	Acquisitions
	On January 2, 2014, the Company completed the acquisition of certain assets of Schlage Lock de Colombia S.A., the second largest mechanical lock manufacturer in Colombia. On April 30, 2014, the Company completed the acquisition of Fire & Security Hardware Pty Limited (FSH), an electromechanical locking provider in Australia. Aggregate cash consideration paid for these acquisitions was approximately $23.0 million.

Debt_and_Credit_Facilities

Debt and Credit Facilities	9 Months Ended
	Sep. 30, 2014
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,
		2014		2013
	Term Loan A Facility due 2018	$	481.2	$	500
	Term Loan B Facility due 2020	496.3		500
	5.75% Senior notes due 2021	300		300
	Other debt, including capital leases, maturing in various amounts through 2016	2		43.9
	Total debt	1,279.50		1,343.90
	Less: current portion of long term debt	30.3		71.9
		$	1,249.20	$	1,272.00
	Senior Secured Credit Facilities
	A wholly-owned subsidiary of the Company has a credit agreement providing for (i) $1.0 billion of Senior Secured Term Loan Facilities, consisting of a $500 million “tranche A” Term Loan Facility due in 2018 (the "Term Loan A Facility") and a $500 million "tranche B" Term Loan Facility due in 2020 (the "Term Loan B Facility," and together with the Term Loan A Facility, the "Term Facilities"), and (ii) a $500 million Senior Secured Revolving Credit Facility (the "Revolver") maturing in 2018. The Company refers to these credit facilities as its "Senior Secured Credit Facilities." The Company repaid $22.5 million of principal on its Term Loan A and Term Loan B Facilities during the nine months ended September 30, 2014 in accordance with the terms of its senior secured credit facility. At September 30, 2014, the Company did not have any borrowings outstanding under the Revolver and had $29.2 million of letters of credit outstanding, which reduces the availability under the Revolver.
	Outstanding borrowings under the Senior Secured Credit Facilities currently accrue interest at LIBOR plus an applicable margin. The applicable margin for borrowings under the Term Loan B Facility is 2.25% as of September 30, 2014, with LIBOR for the Term Loan B Facility to be subject to a floor of 0.75% per annum. The applicable margin for borrowings under the Revolver and the Term Loan A Facility is subject to a credit facility rating-based pricing grid with the LIBOR ranging from 1.75% to 2.25%. The margin for Term Loan A Facility borrowings was 2.00% as of September 30, 2014.
	The Company amended its Senior Secured Credit Facilities on October 15, 2014. See Note 21 for further details.
	Senior Notes
	A wholly-owned subsidiary of the Company has issued $300 million of 5.75% senior notes due 2021 (the "Senior Notes"). The Senior Notes accrue interest at the rate of 5.75% per annum, payable semi-annually on April 1 and October 1 of each year, commencing on April 1, 2014. The Senior Notes mature on October 1, 2021.
	At September 30, 2014, the weighted-average interest rate for borrowings was 2.6% under the Term Loan Facilities and 5.75% under the Senior Notes.

Financial_Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2014
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.
	On the date 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 highly effective in offsetting the changes in the cash flows of the hedged item. To the extent the derivative is deemed to be a highly effective hedge, the fair market value changes of the instrument are recorded to accumulated other comprehensive income (AOCI).
	Any ineffective portion of a derivative instrument’s change in fair value is recorded in Net earnings in the period of change. If the hedging relationship ceases to be highly effective, 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 net notional amount of the Company’s currency derivatives was $154.0 million and $209.6 million at September 30, 2014 and December 31, 2013, respectively. At September 30, 2014 and December 31, 2013, gains of $0.9 million and $0.5 million, net of tax, respectively, were included in AOCI related to the fair value of the Company’s currency derivatives designated as accounting hedges. The amount expected to be reclassified into Net earnings over the next twelve months is a gain of $0.9 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, 2014, the maximum term of the Company’s currency derivatives was less than one year.
	Interest Rate Swaps
	In June 2014, the Company entered into forward starting interest rate swaps for $300.0 million of the Company's variable rate $985.0 million Term Loan Facilities. Swaps with notional amounts totaling $275.0 million become effective in January 2015 and expire in September 2017 and swaps with notional amounts totaling $25.0 million become effective in January 2015 and expire in December 2016. These interest rate swaps met 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 were recognized in AOCI. At September 30, 2014, $0.8 million of gains were recorded in AOCI related to these interest rate swaps and none are expected to be reclassified into Interest expense over the next twelve months.
	The fair values of derivative instruments included within the Condensed and Consolidated Balance Sheets were as follows:
		Asset derivatives				Liability derivatives
	In millions	September 30,		December 31,		September 30,				December 31,
		2014		2013		2014				2013
	Derivatives designated as hedges:
	Currency derivatives	$	1.2	$	0.7	$	—			$	—
	Interest rate swaps	0.8		—		—				—
	Derivatives not designated as hedges:
	Currency derivatives	1.7		—		6.4				2.7
	Total derivatives	$	3.7	$	0.7	$	6.4			$	2.7
	Asset and liability derivatives included in the table above are recorded within Other current assets and Accrued expenses and other current liabilities, respectively.
	The amounts associated with derivatives designated as hedges affecting Net earnings and AOCI for the nine months ended September 30 were as follows:
		Amount of gain (loss)				Location of gain		Amount of gain (loss) reclassified from AOCI and
		recognized in AOCI				(loss) reclassified from		recognized into Net earnings
						AOCI and recognized
	In millions	2014		2013		into Net earnings		2014				2013
	Currency derivatives	$	0.9	$	1.1	Cost of goods sold		$	2.5			$	0.9
	Interest rate swaps	0.8		—		Interest expense		—				—
	Total	$	1.7	$	1.1			$	2.5			$	0.9
	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.

Pensions_and_Postretirement_Be

Pensions and Postretirement Benefits Other than Pensions	9 Months Ended
	Sep. 30, 2014
General Discussion of Pension and Other Postretirement Benefits [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 costs for the three and nine months ended September 30 were as follows:
		U.S.
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Service cost	$	1.7		$	2.3		$	5.3		$	6.7
	Interest cost	2.8			2.5			8.4			7.6
	Expected return on plan assets	(2.7		)	(2.7		)	(8.3		)	(8.0		)
	Net amortization of:
	Prior service costs	0.1			0.1			0.5			0.4
	Plan net actuarial losses	0.5			1			1.5			2.9
	Net periodic pension benefit cost	$	2.4		$	3.2		$	7.4		$	9.6
		Non-U.S.
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Service cost	$	1.3		$	1		$	3.6		$	2.8
	Interest cost	4.4			2.6			13.1			7.8
	Expected return on plan assets	(4.3		)	(2.4		)	(13.0		)	(7.2		)
	Net amortization of:
	Prior service costs	—			—			—			—
	Plan net actuarial losses	0.7			0.4			2.1			1.3
	Net periodic pension benefit cost	$	2.1		$	1.6		$	5.8		$	4.7
	Net curtailment gain	3.2			—			3.2			—
	Net periodic pension benefit cost after curtailment	$	5.3		$	1.6		$	9		$	4.7
	The Company made employer contributions of $1.2 million and $0.9 million to its defined benefit pension plans during the nine months ended September 30, 2014 and 2013. Additional contributions of approximately $15.7 million are expected during the remainder of 2014.
	Postretirement Benefits Other Than Pensions
	The Company sponsors several postretirement plans that provide 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.
	The components of net periodic postretirement benefit cost for the three and nine months ended September 30 were as follows:
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Service cost	$	—		$	0.1		$	0.1		$	0.2
	Interest cost	0.1			0.1			0.4			0.4
	Net amortization of:
	Prior service gains	(0.4		)	(0.6		)	(1.2		)	(1.7		)
	Net actuarial losses	—			0.1			—			0.2
	Net periodic postretirement benefit cost	$	(0.3	)	$	(0.3	)	$	(0.7	)	$	(0.9	)

Fair_Value_Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurement	'
	Fair Value Measurement
	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, 2014 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)		fair value
	Recurring fair value measurements
	Assets:
	Marketable securities	$	18.1	$	—	$	—	$	18.1
	Foreign currency contracts	—		2.9		—		2.9
	Interest rate swap	—		0.8		—		—
	Total asset recurring fair value measurements	18.1		3.7		—		21
	Liabilities:
	Foreign currency contracts	—		6.4		—		6.4
	Total liability recurring fair value measurements	—		6.4		—		6.4
	Financial instruments not carried at fair value
	Total debt	—		1,282.10		—		1,282.10
	Total financial instruments not carried at fair value	$	—	$	1,282.10	$	—	$	1,282.10
	Assets and liabilities measured at fair value at December 31, 2013 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)		fair value
	Recurring fair value measurements
	Assets:
	Marketable securities	$	20.2	$	—	$	—	$	20.2
	Foreign currency contracts	—		0.7		—		0.7
	Total asset recurring fair value measurements	20.2		0.7		—		20.9
	Liabilities:
	Foreign currency contracts	—		2.7		—		2.7
	Total liability recurring fair value measurements	—		2.7		—		2.7
	Financial instruments not carried at fair value
	Total debt	—		1,356.30		—		1,356.30
	Total financial instruments not carried at fair value	$	—	$	1,356.30	$	—	$	1,356.30
	The Company determines the fair value of its financial assets and liabilities using the following methodologies:
	•	Marketable securities – These securities include investments in publicly traded stock of non-U.S. companies held by non-U.S. subsidiaries of the Company. The fair value is obtained for the securities based on observable market prices quoted on public stock exchanges.
	•	Foreign currency contracts – These instruments include foreign currency contracts for non-functional currency balance sheet exposures. The fair value of the foreign currency contracts are determined based on a pricing model that uses spot rates and forward prices from actively quoted currency markets that are readily accessible and observable.
	•	Interest rate swaps – These instruments include forward-starting interest rate swap contracts for $300.0 million of the Company's variable rate debt. The fair value of the derivative instruments are determined based on quoted prices for the Company's swaps, which are not considered an active market.
	•	Debt – These securities are recorded at cost and include senior notes maturing through 2021. The fair value of the long-term debt instruments is obtained based on observable market prices quoted on public exchanges for similar assets.
	The carrying values of cash and cash equivalents, accounts receivable, accounts payable and short-term borrowings are a reasonable estimate of their fair value due to the short-term nature of these instruments.
	These methodologies used by the Company to determine the fair value of its financial assets and liabilities at September 30, 2014 are the same as those used at December 31, 2013. There have been no significant transfers between Level 1 and Level 2 categories.

Equity

Equity	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Equity	'
	Equity
	The reconciliation of Ordinary shares is as follows:
	In millions	Total
	December 31, 2013	96
	Shares issued under incentive plans, net	0.8
	Repurchase of ordinary shares	(1.0	)
	September 30, 2014	95.8
	During the three and nine months ended September 30, 2014, the Company paid $19.9 million to repurchase 0.4 million ordinary shares and $50.3 million to repurchase 1.0 million ordinary shares, respectively, on the open market under a share repurchase program previously approved by its Board of Directors.
	The components of Equity for the nine months ended September 30, 2014 were as follows:
	In millions	Allegion plc				Noncontrolling				Total
		shareholders’				interests				equity
		equity
	Balance at December 31, 2013	$	(86.8	)		$	31.1			$	(55.7	)
	Net earnings	139.4				10.6				150
	Currency translation	(41.6		)		(0.5		)		(42.1		)
	Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	0.7				—				0.7
	Pension and OPEB adjustments, net of tax	8				—				8
	Total comprehensive income	106.5				10.1				116.6
	Share-based compensation	9.7				—				9.7
	Dividends to noncontrolling interests	—				(4.5		)		(4.5		)
	Dividends to ordinary shareholders	(23.0		)		—				(23.0		)
	Repurchase of ordinary shares	(50.3		)		—				(50.3		)
	Shares issued under incentive plans, net	16.4				—				16.4
	Other	(3.2		)		—				(3.2		)
	Balance at September 30, 2014	$	(30.7	)		$	36.7			$	6
	The components of Equity for the nine months ended September 30, 2013 were as follows:
	In millions	Allegion plc				Noncontrolling				Total
		shareholders’				interests				equity
		equity
	Balance at December 31, 2012	$	1,343.20			$	23			$	1,366.20
	Net earnings	21.6				13.9				35.5
	Currency translation	(56.9		)		0.9				(56.0		)
	Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	4.9				—				4.9
	Pension and OPEB adjustments, net of tax	3.3				—				3.3
	Total comprehensive income	(27.1		)		14.8				(12.3		)
	Dividends to noncontrolling interests	—				(5.2		)		(5.2		)
	Distribution/contribution to/from Parent Company	(47.7		)		—				(47.7		)
	Balance at September 30, 2013	$	1,268.40			$	32.6			$	1,301.00
	Other Comprehensive Income (Loss)
	The changes in Accumulated other comprehensive income (loss) for the nine months ended September 30, 2014 are as follows:
	In millions		Cash flow hedges and marketable securities				Pension and OPEB Items				Foreign Currency Items			Total
	December 31, 2013		$	16.7			$	(131.3	)		$	18		$	(96.6	)
	Other comprehensive income before reclassifications		3.2				5.1				(41.6		)	(33.3		)
	Amounts reclassified from accumulated other comprehensive income		(2.5		)		2.9				—			0.4
	Tax (expense) benefit		(0.2		)		—				—			(0.2		)
	September 30, 2014		$	17.2			$	(123.3	)		$	(23.6	)	$	(129.7	)
	The changes in Accumulated other comprehensive income (loss) for the nine months ended September 30, 2013 are as follows:
	In millions		Cash flow hedges and marketable securities				Pension and OPEB Items				Foreign Currency Items			Total
	December 31, 2012		$	10.9			$	(95.7	)		$	77.1		$	(7.7	)
	Other comprehensive income before reclassifications		5.8				0.2				(57.1		)	(51.1		)
	Amounts reclassified from accumulated other comprehensive income		(0.9		)		3.1				—			2.2
	Tax (expense) benefit		0.2				—				—			0.2
	September 30, 2013		$	16			$	(92.4	)		$	20		$	(56.4	)
	The reclassifications out of Accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2014 were as follows:
			Amount Reclassified from Accumulated Other Comprehensive Income
	In millions		Three months ended				Nine months ended				Statement of Comprehensive Income Line Item
	Reclasses below represent (Income) loss to the Statement of Comprehensive Income
	Gains and losses on cash flow hedges:
	Foreign exchange contracts		$	(1.9	)		$	(2.5	)		Cost of goods sold
			(1.9		)		(2.5		)		Earnings before income taxes
			(0.3		)		(0.2		)		Provision for income taxes
			$	(2.2	)		$	(2.7	)		Earnings from continuing operations
	Defined benefit pension items:
Amortization of:
Prior-service (gains) costs		$	(0.3	)		$	(0.7	)		(a)
Actuarial (gains) losses		1.2				3.6				(a)
		0.9				2.9				Earnings from continuing operations
Total reclassifications for the period		$	(1.3	)		$	0.2			Earnings from continuing operations
(a) These accumulated other comprehensive income components are included in the computation of net periodic pension cost and net periodic postretirement benefit cost (see Note 9 for additional details).
The reclassifications out of Accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2013 were as follows:
		Amount Reclassified from Accumulated Other Comprehensive Income
In millions		Three months ended				Nine months ended				Statement of Comprehensive Income Line Item
Reclasses below represent (Income) loss to the Statement of Comprehensive Income
Gains and losses on cash flow hedges:
Foreign exchange contracts		$	(0.3	)		$	(0.9	)		Cost of goods sold
		(0.3		)		(0.9		)		Earnings before income taxes
		0.2				0.2				Provision for income taxes
		$	(0.1	)		$	(0.7	)		Earnings from continuing operations
Defined benefit pension items:
Amortization of:
Prior-service (gains) costs		$	(0.5	)		$	(1.3	)		(a)
Actuarial (gains) losses		1.5				4.4				(a)
		1				3.1				Earnings from continuing operations
Total reclassifications for the period		$	0.9			$	2.4			Earnings from continuing operations
(a) These accumulated other comprehensive income components are included in the computation of net periodic pension cost and net periodic postretirement benefit cost (see Note 9 for additional details).

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [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 relates to continuing operations and is included in Selling and administrative expenses. The expenses recognized for the three and nine months ended September 30 were as follows:
		Three months ended								Nine months ended
	In millions	2014				2013				2014				2013
	Stock options	$	0.8			$	0.3			$	2.7			$	1.4
	RSUs	1.3				0.6				4.5				2.1
	PSUs	1.1				0.2				2.5				0.9
	Deferred compensation	—				0.6				0.5				1.2
	Pre-tax expense	3.2				1.7				10.2				5.6
	Tax benefit	(1.1		)		(0.6		)		(3.6		)		(2.1		)
	After-tax expense	$	2.1			$	1.1			$	6.6			$	3.5
	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:
		2014							2013
		Number			Weighted-				Number			Weighted-
		granted			average fair				granted			average fair
					value per award							value per award
	Stock options	188,817			$	19.54			123,200			$	16.5
	RSUs	101,653			$	54.29			50,197			$	52.6
	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 3-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:
		2014			2013
	Dividend yield	0.6	%		1.6	%
	Volatility	36.55	%		42.14	%
	Risk-free rate of return	1.94	%		0.85	%
	Expected life	6.0 years			5.1 years
	For grants issued prior to December 1, 2013, expected volatility is based on the historical volatility from traded options on the stock of Ingersoll Rand plc ("Ingersoll Rand"), the former parent of our commercial and residential security businesses. 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. Historical data is used to estimate forfeitures within Ingersoll Rand's valuation model. The expected life of the Ingersoll Rand's stock option awards is derived from historical experience and represents the period of time that awards are expected to be outstanding.
	For grants issued on or after December 1, 2013, expected volatility is based on the weighted average of the implied volatility of a group of the Company’s peers due to the lack of trading history for the Company's ordinary shares. 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. Historical peer data is used to estimate forfeitures within the Company’s valuation model. The expected life of the Company’s stock option awards granted post separation 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 for key employees. The program 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. During the nine months ended September 30, 2014, the Company granted PSUs with a maximum award level of approximately 0.2 million shares.
	In December 2013, the Company’s Compensation Committee granted PSUs that are earned based upon the total shareholder return ("TSR") of the Company’s share performance compared to the TSR of the 41 companies currently comprising the S&P 400 Capital Goods Index over the three-year performance period based on the change in the 30 day average price for the index from December 2013 to the 30 day average price for the index in December 2016. The fair value of the market condition is estimated using a Monte Carlo simulation.
	In March 2014, the Company’s Compensation Committee granted PSUs that were based 50% upon a performance condition, measured at each performance period by earnings per share ("EPS") growth, and 50% upon a market condition, measured by the Company’s relative TSR as compared to the TSR of the industrial group of companies in the S&P 400 Capital Goods Index over the one-year, two-year, and three-year performance periods. The fair values of the market condition were estimated using a Monte Carlo Simulation approach in a risk-neutral framework based upon historical volatility, risk-free rates and correlation matrix.
	Deferred Compensation
	The Company allows key employees to defer a portion of their eligible 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, 2014
Restructuring Charges [Abstract]	'
Restructuring Activities	'
	Restructuring Activities
	The changes in the restructuring reserve during the nine months ended September 30, 2014 were as follows:
	In millions	EMEIA			Total
	December 31, 2013	$	2.8		$	2.8
	Additions	5.4			5.4
	Cash and non-cash uses	(6.3		)	(6.3		)
	September 30, 2014	$	1.9		$	1.9
	The majority of the costs accrued as of September 30, 2014 will be paid within one year.
	2014 EMEIA Restructuring Plan
	In the second quarter of 2014, management committed to a plan to restructure the EMEIA segment to improve efficiencies and regional cost structure. Expenses incurred for this plan for the three and nine months ended September 30, 2014 were as follows:
		Three months ended						Nine months ended
	In millions	2014			2013			2014		2013
	EMEIA	$	0.2		$	—		$	4.6	$	—
	Total	$	0.2		$	—		$	4.6	$	—
	Cost of goods sold	$	0.1		$	—		$	1.1	$	—
	Selling and administrative expenses	0.1			—			3.5		—
	Total	$	0.2		$	—		$	4.6	$	—
	In addition, the Company incurred other non-qualified restructuring charges of $0.4 million during the nine months ended September 30, 2014 in conjunction with the plan, which represents costs that are directly attributable to restructuring activities, but do not fall into the severance, exit or disposal category.
	Other Restructuring Plans
	Other restructuring charges recorded during the three and nine months ended September 30 as part of prior restructuring plans were as follows:
		Nine months ended
	In millions	2014			2013
	Americas	$	—		$	0.1
	EMEIA	0.8			4.5
	Total	$	0.8		$	4.6
	Cost of goods sold	$	0.2		$	2.3
	Selling and administrative expenses	0.6			2.3
	Total	$	0.8		$	4.6
	These charges primarily related to workforce reductions in an effort to increase efficiencies across multiple lines of business. There were no charges incurred during the three months ended September 30, 2014 or 2013 related to other restructuring plans.

Other_Net

Other, Net	9 Months Ended
	Sep. 30, 2014
Other Net [Abstract]	'
Other, Net	'
	The components of Other, net for the three and nine months ended September 30 were as follows:
		Three months ended					Nine months ended
	In millions	2014			2013		2014			2013
	Interest income	$	(0.1	)	$	—	$	(0.4	)	$	(0.1	)
	Exchange (gain) loss	(1.7		)	—		(2.3		)	6.9
	Other	(0.2		)	0.2		(0.4		)	0.1
	Other (gain) loss, net	$	(2.0	)	$	0.2	$	(3.1	)	$	6.9
	Included within Exchange (gain) loss for the nine months ended September 30, 2013 is a $6.2 million realized foreign currency translation loss related to the devaluation of the Venezuelan Bolivar from the pre-existing exchange rate of 4.3 Bolivars to the U.S. dollar to 6.3 Bolivars to the U.S. dollar. See "Item 2 - Management's Discussion and Analysis of Financial Condition and Results of Operations - Overview" for further discussion regarding currency volatility in Venezuela.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The effective income tax rates for the three months ended September 30, 2014 and 2013 were 28.7% and (205.9)%. The effective tax rate for the three months ended September 30, 2013 included the impact of a non-cash pre-tax goodwill impairment charge of $137.6 million ($131.2 million, net of tax). Excluding this charge, the effective tax rate was 44.9% for the three months ended September 30, 2013. The decrease in the effective income tax rate compared to 2013 is primarily due to favorable changes in the mix of pre-tax income earned in lower rate jurisdictions, favorable discrete tax benefits as well as an adjustment in the third quarter of 2013 to true-up the full-year 2013 effective tax rate.
	The effective income tax rates for the nine months ended September 30, 2014 and 2013 were 29.3% and 73.2%, respectively. Excluding the goodwill impairment charge discussed above, the effective tax rate was 39.2% for the nine months ended September 30, 2013. The decrease in the effective income tax rate compared to 2013 is primarily due to favorable changes in the mix of pre-tax income earned in lower rate jurisdictions and favorable discrete tax benefits.

Earnings_Per_Share_EPS

Earnings Per Share (EPS)	9 Months Ended
	Sep. 30, 2014
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.
	Basic and Diluted EPS for all periods prior to the spin-off from Ingersoll Rand reflect the number of distributed shares on December 1, 2013, or 96.0 million shares. These shares are treated as issued and outstanding from January 1, 2013 for purposes of calculating historical basic EPS for the three and nine months ended September 30, 2013. At the time of the spin-off from Ingersoll Rand, stock options and RSU awards were converted to awards of Allegion, and therefore there were no dilutive securities outstanding for historical periods.
	The following table summarizes the weighted-average number of ordinary shares outstanding for basic and diluted earnings per share calculations for the three and nine months ended September 30:
		Three months ended		Nine months ended
	In millions	2014	2013	2014	2013
	Weighted-average number of basic shares	95.9	96	96.2	96
	Shares issuable under incentive stock plans	1	—	1.1	—
	Weighted-average number of diluted shares	96.9	96	97.3	96

Business_Segment_Information

Business Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Business Segment Information	'
	Business Segment Information
	The Company classifies its businesses into the following three reportable segments based on industry and market focus: Americas, EMEIA and Asia Pacific.
	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 its operating decisions. The Company defines Segment operating margin as Segment operating income as a percentage of Net revenues.
	In the second quarter of 2014 management committed to a plan to sell a component of a business in the EMEIA region and reclassified historical results of the component to discontinued operations for all periods presented. The transaction closed in the third quarter of 2014.
	Effective January 1, 2013, a product line was transferred from the Asia Pacific segment to the Americas segment. Within the Quarterly Condensed and Consolidated Financial Statements for the three and nine months ended September 30, 2013, goodwill was reclassified from the Asia Pacific segment to the Americas segment.
	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	2014			2013			2014			2013
	Net revenues
	Americas	$	423.1		$	405		$	1,169.20		$	1,154.10
	EMEIA	89.5			92.1			289.9			286
	Asia Pacific	34.1			31.9			85.7			85.8
	Total	$	546.7		$	529		$	1,544.80		$	1,525.90
	Segment operating income (loss)
	Americas	$	122.8		$	109.5		$	320.1		$	302.8
	EMEIA (a)	0.4			(5.1		)	(4.3		)	(11.1		)
	Asia Pacific (b)	(0.5		)	20.6			(7.0		)	18.7
	Total	122.7			125			308.8			310.4
	Reconciliation to Operating income
	Asset impairment (a)	—			(137.6		)	—			(137.6		)
	Unallocated corporate expense	(17.1		)	(8.8		)	(46.1		)	(24.7		)
	Operating income	$	105.6		$	(21.4	)	$	262.7		$	148.1
	Reconciliation to Earnings before income taxes
	Interest expense	12.7			0.5			38.3			1.4
	Other (gain) loss, net	(2.0		)	0.2			(3.1		)	6.9
	Earnings before income taxes	$	94.9		$	(22.1	)	$	227.5		$	139.8
	(a) During the nine months ended September 30, 2013, the Company recorded a non-cash, pre-tax goodwill impairment charge of $137.6 million. This amount has been excluded from Segment operating income of the EMEIA segment as management excludes these charges from Operating income when making operating decisions about the business
	(b) Segment operating income for the three and nine months ended September 30, 2013 include a $21.5 million gain on a property sale in China.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
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 is sometimes a party to environmental lawsuits and claims and from time to time receives 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, 2014 and 2013, the Company incurred $0.6 million and $0.5 million of expenses for environmental remediation at sites presently or formerly owned or leased by us. During the nine months ended September 30, 2014 and 2013, the Company incurred $1.8 million and $1.5 million. As of September 30, 2014 and December 31, 2013, the Company has recorded reserves for environmental matters of $9.9 million and $10.8 million. Of these amounts, $2.9 million and $2.9 million relate to remediation of sites previously disposed by the Company. Environmental reserves are classified as Accrued expenses and other current liabilities or Other noncurrent liabilities based on their expected term. The Company's total current environmental reserve at September 30, 2014 and December 31, 2013 was $3.6 million and $4.2 million. The non-current reserve at September 30, 2014 and December 31, 2013 was $6.3 million and $6.6 million. 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	2014			2013
	Balance at beginning of period	$	9.7		$	9.5
	Reductions for payments	(5.0		)	(4.4		)
	Accruals for warranties issued during the current period	5			3.4
	Changes to accruals related to preexisting warranties	0.5			0.3
	Translation	(0.2		)	—
	Balance at end of period	$	10		$	8.8
	Standard product warranty liabilities are classified as Accrued expenses and other current liabilities.

Guarantor_Financial_Informatio

Guarantor Financial Information (Notes)	9 Months Ended
	Sep. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	'
	Guarantor Financial Information
	Allegion US Holding Company, Inc. (the “Issuer”) as the issuer of the Senior Notes and Allegion plc (the “Parent”), Schlage Lock Company LLC and Von Duprin LLC (together, the “Subsidiary Guarantors”) are all guarantors of the Senior Notes. The following condensed and consolidated financial information of the Parent, the Issuer, the Subsidiary Guarantors and the other Allegion subsidiaries that are not guarantors (the “Other Subsidiaries”) on a combined basis as of September 30, 2014 and for the three and nine months ended September 30, 2014 and 2013, is being presented in order to meet the reporting requirements under the Senior Notes indenture and Rule 3-10 of Regulation S-X. In accordance with Rule 3-10(d) of Regulation S-X, separate financial statements for the Issuer, the Parent and the Subsidiary Guarantors are not required to be filed with the SEC as the subsidiary debt issuer and the guarantors are directly or indirectly 100% owned by the Parent and the guarantees are full and unconditional and joint and several.
	The Company revised its Condensed and Consolidated Statement of Cash Flows for the nine months ended September 30, 2014 to correct for an immaterial error. The revision was made to reclassify $23.7 million of Intercompany dividends paid in the second quarter of 2014 by a Subsidiary Guarantor from net cash provided by continuing operating activities to net cash used in financing activities. The Company will present the revised Condensed and Consolidated Statement of Cash Flows for the six months ended June 30, 2014 as part of its Form 10-Q that will be filed for the six months ended June 30, 2015. The revision did not impact the net decrease in cash and cash equivalents for the Issuer, Parent, Other Subsidiaries or Allegion plc and solely impacted the second quarter 2014 financial reporting.
	Condensed and Consolidated Statement of Comprehensive Income
	For the three months ended September 30, 2014
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net revenues	$	—		$	—		$	375.5		$	222.6		$	(51.4	)	$	546.7
	Cost of goods sold	—			—			214.4			147.6			(51.4		)	310.6
	Selling and administrative expenses	1.4			—			77.1			52			—			130.5
	Operating income (loss)	(1.4		)	—			84			23			—			105.6
	Equity earnings (loss) in affiliates, net of tax	62.3			80.6			3.8			100.1			(246.8		)	—
	Interest expense	—			12.7			—			—			—			12.7
	Intercompany interest and fees	—			12.7			(75.4		)	62.7			—			—
	Other (gain) loss, net	—			—			(0.2		)	(1.8		)	—			(2.0		)
	Earnings (loss) before income taxes	60.9			55.2			163.4			62.2			(246.8		)	94.9
	Provision (benefit) for income taxes	0.3			9.5			59.5			(42.1		)	—			27.2
	Earnings (loss) from continuing operations	60.6			45.7			103.9			104.3			(246.8		)	67.7
	Discontinued operations, net of tax	—			—			—			(2.1		)	—			(2.1		)
	Net earnings (loss)	60.6			45.7			103.9			102.2			(246.8		)	65.6
	Less: Net earnings attributable to noncontrolling interests	—			—			—			5.3			—			5.3
	Net earnings (loss) attributable to Allegion plc	$	60.6		$	45.7		$	103.9		$	96.9		$	(246.8	)	$	60.3
	Total comprehensive income (loss)	$	40.5		$	45.7		$	103.9		$	97.2		$	(246.8	)	$	40.5
	Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			5.7			—			5.7
	Total comprehensive income (loss) attributable to Allegion plc	$	40.5		$	45.7		$	103.9		$	91.5		$	(246.8	)	$	34.8
	Condensed and Consolidated Statement of Comprehensive Income
	For the nine months ended September 30, 2014
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net revenues	$	—		$	—		$	1,054.20		$	637.9		$	(147.3	)	$	1,544.80
	Cost of goods sold	—			—			602.7			435.2			(147.3		)	890.6
	Selling and administrative expenses	3.4			—			220.9			167.2			—			391.5
	Operating income (loss)	(3.4		)	—			230.6			35.5			—			262.7
	Equity earnings (loss) in affiliates, net of tax	142.8			156.3			6.2			286.7			(592.0		)	—
	Interest expense	—			37.4			—			0.9			—			38.3
	Intercompany interest and fees	—			37.6			(226.6		)	189			—			—
	Other (gain) loss, net	—			—			(0.1		)	(3.0		)	—			(3.1		)
	Earnings (loss) before income taxes	139.4			81.3			463.5			135.3			(592.0		)	227.5
	Provision (benefit) for income taxes	—			(28.1		)	170.6			(75.9		)	—			66.6
	Earnings (loss) from continuing operations	139.4			109.4			292.9			211.2			(592.0		)	160.9
	Discontinued operations, net of tax	—			—			—			(10.9		)	—			(10.9		)
	Net earnings (loss)	139.4			109.4			292.9			200.3			(592.0		)	150
	Less: Net earnings attributable to noncontrolling interests	—			—			—			10.6			—			10.6
	Net earnings (loss) attributable to Allegion plc	$	139.4		$	109.4		$	292.9		$	189.7		$	(592.0	)	$	139.4
	Total comprehensive income (loss)	$	106.5		$	109.4		$	292.9		$	199.8		$	(592.0	)	$	116.6
	Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			10.1			—			10.1
	Total comprehensive income (loss) attributable to Allegion plc	$	106.5		$	109.4		$	292.9		$	189.7		$	(592.0	)	$	106.5
	Condensed and Consolidated Statement of Comprehensive Income
	For the three months ended September 30, 2013
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net revenues	$	—		$	—		$	363.8		$	219.4		$	(54.2	)	$	529
	Cost of goods sold	—			—			206.6			138.2			(54.2		)	290.6
	Selling and administrative expenses	—			—			56.1			66.1			—			122.2
	Goodwill impairment charge	—			—			—			137.6			—			137.6
	Operating income (loss)	—			—			101.1			(122.5		)	—			(21.4		)
	Equity earnings (loss) in affiliates, net of tax	(78.2		)	(11.8		)	0.7			62.4			26.9			—
	Interest expense	—			—			—			0.5			—			0.5
	Other (gain) loss, net	—			—			1.1			(0.9		)	—			0.2
	Earnings (loss) before income taxes	(78.2		)	(11.8		)	100.7			(59.7		)	26.9			(22.1		)
	Provision (benefit) for income taxes	—			—			37.5			8			—			45.5
	Earnings (loss) from continuing operations	(78.2		)	(11.8		)	63.2			(67.7		)	26.9			(67.6		)
	Discontinued operations, net of tax	—			—			(0.1		)	(0.3		)	—			(0.4		)
Net earnings (loss)	(78.2		)	(11.8		)	63.1			(68.0		)	26.9			(68.0		)
Less: Net earnings attributable to noncontrolling interests	—			—			—			10.1			—			10.1
Net earnings (loss) attributable to Allegion plc	$	(78.2	)	$	(11.8	)	$	63.1		$	(78.1	)	$	26.9		$	(78.1	)
Total comprehensive income (loss)	$	(107.3	)	$	(11.8	)	$	63.1		$	(78.1	)	$	26.9		$	(107.2	)
Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			10.3			—			10.3
Total comprehensive income (loss) attributable to Allegion plc	$	(107.3	)	$	(11.8	)	$	63.1		$	(88.4	)	$	26.9		$	(117.5	)
Condensed and Consolidated Statement of Comprehensive Income
For the nine months ended September 30, 2013
In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
										Subsidiaries			Adjustments
Net revenues	$	—		$	—		$	1,033.60		$	649.5		$	(157.2	)	$	1,525.90
Cost of goods sold	—			—			584.4			455.8			(157.2		)	883
Selling and administrative expenses	—			—			160.6			196.6			—			357.2
Goodwill impairment charge	—			—			—			137.6			—			137.6
Operating income (loss)	—			—			288.6			(140.5		)	—			148.1
Equity earnings (loss) in affiliates, net of tax	21.5			125.3			2.2			180.2			(329.2		)	—
Interest expense	—			—			0.1			1.3			—			1.4
Other (gain) loss, net	—			—			0.4			6.5			—			6.9
Earnings (loss) before income taxes	21.5			125.3			290.3			31.9			(329.2		)	139.8
Provision (benefit) for income taxes	—			—			108.1			(5.7		)	—			102.4
Earnings (loss) from continuing operations	21.5			125.3			182.2			37.6			(329.2		)	37.4
Discontinued operations, net of tax	—			—			0.2			(2.1		)	—			(1.9		)
Net earnings (loss)	21.5			125.3			182.4			35.5			(329.2		)	35.5
Less: Net earnings attributable to noncontrolling interests	—			—			—			13.9			—			13.9
Net earnings (loss) attributable to Allegion plc	$	21.5		$	125.3		$	182.4		$	21.6		$	(329.2	)	$	21.6
Total comprehensive income (loss)	$	(12.3	)	$	125.3		$	182.4		$	21.5		$	(329.2	)	$	(12.3	)
Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			14.8			—			14.8
Total comprehensive income (loss) attributable to Allegion plc	$	(12.3	)	$	125.3		$	182.4		$	6.7		$	(329.2	)	$	(27.1	)
Condensed and Consolidated Balance Sheet
September 30, 2014
In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
										Subsidiaries			Adjustments
Current assets:
Cash and cash equivalents	$	1.2		$	—		$	119.1		$	131.1		$	—		$	251.4
Accounts and notes receivable, net	—			—			133.5			153.8			—			287.3
Inventories	—			—			69.6			111.1			—			180.7
Other current assets	0.2			28.1			23.3			163			—			214.6
Accounts and notes receivable affiliates	—			1,289.00			3,140.70			280			(4,709.7		)	—
Total current assets	1.4			1,317.10			3,486.20			839			(4,709.7		)	934
Investment in affiliates	—			1,435.90			88.7			4,510.20			(6,034.8		)	—
Property, plant and equipment, net	—			—			147.1			65.4			—			212.5
Intangible assets, net	—			—			161.1			481.9			—			643
Notes receivable affiliates	—			—			1,049.00			800			(1,849.0		)	—
Other noncurrent assets	—			88.4			76			38.3			—			202.7
Total assets	$	1.4		$	2,841.40		$	5,008.10		$	6,734.80		$	(12,593.5	)	$	1,992.20
Current liabilities:
Accounts payable and accruals	$	1.2		$	21.9		$	329		$	81.8		$	—		$	433.9
Short-term borrowings and current maturities of long-term debt	—			30			0.1			0.2			—			30.3
Accounts and note payable affiliates	0.1			186.5			247.2			4,275.90			(4,709.7		)	—
Total current liabilities	1.3			238.4			576.3			4,357.90			(4,709.7		)	464.2
Long-term debt	—			1,247.50			0.1			1.6			—			1,249.20
Note payable affiliate	—			1,810.90			—			38			(1,848.9		)	—
Estimated loss on investment	30.9			—			—			—			(30.9		)	—
Other noncurrent liabilities	(0.1		)	104			147.6			21.3			—			272.8
Total liabilities	32.1			3,400.80			724			4,418.80			(6,589.5		)	1,986.20
Equity:
Total shareholders equity (deficit)	(30.7		)	(559.4		)	4,284.10			2,279.30			(6,004.0		)	(30.7		)
Noncontrolling interests	—			—			—			36.7			—			36.7
Total equity (deficit)	(30.7		)	(559.4		)	4,284.10			2,316.00			(6,004.0		)	6
Total liabilities and equity	$	1.4		$	2,841.40		$	5,008.10		$	6,734.80		$	(12,593.5	)	$	1,992.20
Condensed and Consolidated Balance Sheet
December 31, 2013
In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
										Subsidiaries			Adjustments
Current assets:
Cash and cash equivalents	$	1.4		$	—		$	78.8		$	147.2		$	—		$	227.4
Restricted cash	—			—			—			40.2			—			40.2
Accounts and notes receivable, net	—			—			110.2			149.8			—			260
Inventories	—			—			64.3			89.3			—			153.6
Other current assets	0.1			—			31.5			202			—			233.6
Assets held for sale	—			—			—			11.2			—			11.2
Accounts receivable affiliates	0.4			24.7			75.1			185.8			(286.0		)	—
Total current assets	1.9			24.7			359.9			825.5			(286.0		)	926
Investment in affiliates	—			1,236.10			84.9			4,023.20			(5,344.2		)	—
Property, plant and equipment, net	—			—			130.9			69.3			—			200.2
Intangible assets, net	—			—			161.2			489.8			—			651
Notes receivable affiliates	—			1,191.90			3,726.40			800			(5,718.3		)	—
Other noncurrent assets	—			93.3			72.3			37.1			—			202.7
Total assets	$	1.9		$	2,546.00		$	4,535.60		$	6,244.90		$	(11,348.5	)	$	1,979.90
Current liabilities:
Accounts payable and accruals	$	1.3		$	14		$	175.6		$	227.7		$	—		$	418.6
Short-term borrowings and current maturities of long-term debt	—			30			0.1			41.8			—			71.9
Accounts and note payable affiliates	0.2			23.3			189.6			72.9			(286.0		)	—
Total current liabilities	1.5			67.3			365.3			342.4			(286.0		)	490.5
Long-term debt	—			1,270.00			0.2			1.8			—			1,272.00
Note payable affiliate	—			1,810.90			—			3,907.40			(5,718.3		)	—
Estimated loss on investment	87.2			—			—			—			(87.2		)	—
Other noncurrent liabilities	—			58.5			61.9			152.7			—			273.1
Total liabilities	88.7			3,206.70			427.4			4,404.30			(6,091.5		)	2,035.60
Equity:
Total shareholders equity (deficit)	(86.8		)	(660.7		)	4,108.20			1,809.50			(5,257.0		)	(86.8		)
Noncontrolling interests	—			—			—			31.1			—			31.1
Total equity (deficit)	(86.8		)	(660.7		)	4,108.20			1,840.60			(5,257.0		)	(55.7		)
Total liabilities and equity	$	1.9		$	2,546.00		$	4,535.60		$	6,244.90		$	(11,348.5	)	$	1,979.90
Condensed and Consolidated Statement of Cash Flows
For the nine months ended September 30, 2014
In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
										Subsidiaries			Adjustments
Net cash provided by (used in) continuing operating activities	$	56.2		$	(13.2	)	$	81.9		$	135.1		$	(85.2	)	$	174.8
Net cash provided by (used in) discontinued operating activities	—			—			—			(2.8		)	—			(2.8		)
Net cash provided by (used in) operating activities	56.2			(13.2		)	81.9			132.3			(85.2		)	172
Cash flows from investing activities:
Capital expenditures	—			—			(32.9		)	(6.9		)	—			(39.8		)
Acquisition of businesses, net of cash acquired	—			—			—			(23.0		)	—			(23.0		)
Other investing activities, net	—			—			0.6			41.3			—			41.9
Net cash provided by (used in) investing activities	—			—			(32.3		)	11.4			—			(20.9		)
Cash flows from financing activities:
Net debt repayments	—			(22.5		)	—			(40.6		)	—			(63.1		)
Net inter-company proceeds (payments)	—			35.7			14.4			(50.1		)	—			—
Dividends paid to shareholders	(22.6		)	—			(23.7		)	(61.5		)	85.2			(22.6		)
Repurchase of ordinary shares	(50.3		)	—			—			—			—			(50.3		)
Other financing activities, net	16.5			—			—			(1.1		)	—			15.4
Net cash provided by (used in) financing activities	(56.4		)	13.2			(9.3		)	(153.3		)	85.2			(120.6		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			(6.5		)	—			(6.5		)
Net increase (decrease) in cash and cash equivalents	(0.2		)	—			40.3			(16.1		)	—			24
Cash and cash equivalents - beginning of period	1.4			—			78.8			147.2			—			227.4
Cash and cash equivalents - end of period	$	1.2		$	—		$	119.1		$	131.1		$	—		$	251.4
Condensed and Consolidated Statement of Cash Flows
For the nine months ended September 30, 2013
In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
										Subsidiaries			Adjustments
Net cash provided by (used in) continuing operating activities	$	—		$	—		$	180.7		$	(24.0	)	$	—		$	156.7
Net cash provided by (used in) discontinued operating activities	—			—			0.2			0.7			—			0.9
Net cash provided by (used in) operating activities	—			—			180.9			(23.3		)	—			157.6
Cash flows from investing activities:
Capital expenditures	—			—			(7.2		)	(4.8		)	—			(12.0		)
Proceeds from sale of property, plant and equipment	—			—			0.7			23.7			—			24.4
Net cash provided by (used in) investing activities	—			—			(6.5		)	18.9			—			12.4
Cash flows from financing activities:
Net debt proceeds	—			—			—			(0.2		)	—			(0.2		)
Net transfers from (to) Parent and affiliates	—			—			(162.4		)	43.9			—			(118.5		)
Other, net	—			—			—			(5.2		)	—			(5.2		)
Net cash provided by (used in) financing activities	—			—			(162.4		)	38.5			—			(123.9		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			4.9			—			4.9
Net increase (decrease) in cash and cash equivalents	—			—			12			39			—			51
Cash and cash equivalents - beginning of period	—			—			1.8			315.7			—			317.5
Cash and cash equivalents - end of period	$	—		$	—		$	13.8		$	354.7		$	—		$	368.5

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	On October 15, 2014, the Company entered into an agreement to amend and restate its existing credit agreement (the “Amended and Restated Credit Agreement”). The Amended and Restated Credit Agreement, among other things, (1) increased the size of the Term A Loan Facility from $500.0 million to $975.0 million and borrowed an additional $493.8 million under the facility, (2) repaid the outstanding Term Loan B Facility with the proceeds from the Term Loan A Facility, (3) reduced credit spreads on Term Loan A Facility 25 basis points and eliminated the LIBOR floor associated with Term Loan B Facility and (4) extended the applicable maturities from September 27, 2018 to October 15, 2019. The availability under the Revolver remained unchanged, and continues to permit borrowing of up to $500 million. Borrowings outstanding under the Term Loan A Facility were $975.0 million on October 15, 2014.
	In the fourth quarter, Allegion expects to incur a non-cash charge of approximately $4.5 million for early retirement of the unamortized Term Loan B Facility debt issuance costs.

Discontinued_Operations_Notes

Discontinued Operations (Notes)	9 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	'
	Discontinued Operations
	EMEIA Divestiture
	In the second quarter of 2014 the Company committed to a plan to sell its United Kingdom (UK) Door businesses to an unrelated third party. The transaction closed in the third quarter of 2014. The businesses sold include the Dor-o-Matic™ branded automatic door business, the Martin Roberts™ branded performance steel doorset business and the UK service organization. Historical results of the component have been reclassified to discontinued operations for all periods presented. In conjunction with the plan, we recorded a $7.6 million charge to write the carrying value of the assets to be sold down to their estimated fair value.
	Net revenues and after-tax earnings of the component for the three and nine months ended September 30 were as follows:
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Net revenues	$	4.3		$	6.3		$	16.1		$	17
	After-tax loss from operations	$	(0.3	)	$	(0.5	)	$	(2.0	)	$	(1.6	)
	Loss on disposal	(1.0		)	—			(7.6		)	—
	Discontinued operations, net of tax	$	(1.3	)	$	(0.5	)	$	(9.6	)	$	(1.6	)
	The Company recorded an immaterial income tax benefit for the component's losses for the three and nine months ended September 30, 2013.
	Other divestitures
	Other discontinued operations recognized a loss of $0.8 million and earnings of $0.1 million for the three months ended September 30, 2014 and 2013 and a loss of $1.3 million and $0.3 million for the nine months ended September 30, 2014 and 2013. These losses were mainly related to lease expense and other miscellaneous expenses from previously sold businesses.

Recent_Accounting_Pronouncemen1

Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Recently Adopted Accounting Pronouncements	'
	Recently Adopted Accounting Pronouncements:
	In February 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2013-04, "Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date." ASU 2013-04 provides guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements where the total obligation is fixed at the reporting date, and for which no specific guidance currently exists. This new guidance is effective for annual reporting periods beginning on or after December 15, 2013 and subsequent interim periods. The requirements of ASU 2013-04 do not have a significant impact on the Condensed and Consolidated Financial Statements.
	In March 2013, the FASB issued ASU 2013-05, "Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity." ASU 2013-05 clarifies the application of GAAP to the release of cumulative translation adjustments related to changes of ownership in or within foreign entities, including step acquisitions. This new guidance is effective for annual reporting periods beginning on or after December 15, 2013 and subsequent interim periods. The requirements of ASU 2013-04 do not have a significant impact on the Condensed and Consolidated Financial Statements.
	In July 2013, the FASB issued ASU 2013-11 Income Taxes (Topic 740), "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss or a Tax Credit Carryforward Exists." With certain exceptions, ASU 2013-11 requires entities to present an unrecognized tax benefit, or portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. The guidance is effective for interim and annual periods beginning after December 15, 2013 on either a prospective or retrospective basis with early adoption permitted. The requirements of ASU 2013-11 do not have a significant impact on the Condensed and Consolidated Financial Statements.
	Recently Issued Accounting Pronouncements
	In April 2014, the FASB issued ASU 2014-08 "Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity," which amends the definition of a discontinued operation in Accounting Standards Codification Topic 205-20 (Presentation of Financial Statements — Discontinued Operations) and requires entities to disclose additional information about disposal transactions that do not meet the discontinued operations criteria. ASU 2014-08 redefines a discontinued operation as a component or group of components of an entity that (1) has been disposed of by sale or other than by sale or is classified as held for sale and (2) represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. According to the ASU, a strategic shift that has (or will have) a major effect on an entity’s operations and results includes the disposal of a major geographical area, a major line of business, a major equity investment, or other major parts of an entity. The ASU is effective prospectively for disposals or components classified as held for sale in periods on or after December 15, 2014. The Company is assessing what impact, if any, the ASU 2014-08 will have on the Condensed and Consolidated Financial Statements.

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2014
Inventory, Net [Abstract]	'
Major Classes Of Inventory	'
	The major classes of inventory were as follows:
	In millions	September 30,			December 31,
		2014			2013
	Raw materials	$	62.8		$	68.3
	Work-in-process	46.9			34.5
	Finished goods	105.4			84.6
		215.1			187.4
	LIFO reserve	(34.4		)	(33.8		)
	Total	$	180.7		$	153.6

Goodwill_Tables

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill Disclosure [Abstract]	'
Changes in Goodwill Carrying Amounts	'
	The changes in the carrying amount of goodwill for the nine months ended September 30, 2014 were as follows:
	In millions	Americas		EMEIA			Asia Pacific			Total
	December 31, 2013 (gross)	$	362.8	$	540		$	87.6		$	990.4
	Acquisitions	2.3		—			10.3			12.6
	Currency translation	—		(4.6		)	(3.0		)	(7.6		)
	September 30, 2014 (gross)	365.1		535.4			94.9			995.4
	Accumulated impairment *	—		(478.6		)	(6.9		)	(485.5		)
	Goodwill (net)	$	365.1	$	56.8		$	88		$	509.9
	* The Company recorded a $137.6 million goodwill impairment charge in the EMEIA segment in the third quarter of 2013.

Intangible_Assets_Tables

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Intangible Assets Disclosure [Abstract]	'
Schedule of Intangible Asset Net of Goodwill	'
	The gross amount of the Company’s intangible assets and related accumulated amortization were as follows:
		September 30, 2014							December 31, 2013
	In millions	Gross carrying amount		Accumulated amortization			Net carrying amount		Gross carrying amount		Accumulated amortization			Net carrying amount
	Completed technologies/patents	$	28.5	$	(23.3	)	$	5.2	$	26.4	$	(23.6	)	$	2.8
	Customer relationships	99.3		(38.2		)	61.1		107.8		(38.1		)	69.7
	Trademarks (finite-lived)	93.2		(36.6		)	56.6		101.4		(36.8		)	64.6
	Other	10.6		(10.6		)	—		13.4		(13.4		)	—
	Total finite-lived intangible assets	231.6		$	(108.7	)	122.9		249		$	(111.9	)	137.1
	Trademarks (indefinite-lived)	10.2					10.2		9					9
	Total	$	241.8				$	133.1	$	258				$	146.1

Debt_and_Credit_Facilities_Tab

Debt and Credit Facilities (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of Debt	'
	Long-term debt and other borrowings consisted of the following:
	In millions	September 30,		December 31,
		2014		2013
	Term Loan A Facility due 2018	$	481.2	$	500
	Term Loan B Facility due 2020	496.3		500
	5.75% Senior notes due 2021	300		300
	Other debt, including capital leases, maturing in various amounts through 2016	2		43.9
	Total debt	1,279.50		1,343.90
	Less: current portion of long term debt	30.3		71.9
		$	1,249.20	$	1,272.00

Financial_Instruments_Tables

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
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:
		Asset derivatives				Liability derivatives
	In millions	September 30,		December 31,		September 30,				December 31,
		2014		2013		2014				2013
	Derivatives designated as hedges:
	Currency derivatives	$	1.2	$	0.7	$	—			$	—
	Interest rate swaps	0.8		—		—				—
	Derivatives not designated as hedges:
	Currency derivatives	1.7		—		6.4				2.7
	Total derivatives	$	3.7	$	0.7	$	6.4			$	2.7
Schedule of Derivatives Designated as Hedges Affecting Net Earning and AOCI	'
	The amounts associated with derivatives designated as hedges affecting Net earnings and AOCI for the nine months ended September 30 were as follows:
		Amount of gain (loss)				Location of gain		Amount of gain (loss) reclassified from AOCI and
		recognized in AOCI				(loss) reclassified from		recognized into Net earnings
						AOCI and recognized
	In millions	2014		2013		into Net earnings		2014				2013
	Currency derivatives	$	0.9	$	1.1	Cost of goods sold		$	2.5			$	0.9
	Interest rate swaps	0.8		—		Interest expense		—				—
	Total	$	1.7	$	1.1			$	2.5			$	0.9

Pensions_and_Postretirement_Be1

Pensions and Postretirement Benefits Other than Pensions (Tables)	9 Months Ended
	Sep. 30, 2014
Pension Plans [Member]	'
Schedule of Net Periodic Benefit Cost	'
	The components of the Company’s net periodic pension benefit costs for the three and nine months ended September 30 were as follows:
		U.S.
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Service cost	$	1.7		$	2.3		$	5.3		$	6.7
	Interest cost	2.8			2.5			8.4			7.6
	Expected return on plan assets	(2.7		)	(2.7		)	(8.3		)	(8.0		)
	Net amortization of:
	Prior service costs	0.1			0.1			0.5			0.4
	Plan net actuarial losses	0.5			1			1.5			2.9
	Net periodic pension benefit cost	$	2.4		$	3.2		$	7.4		$	9.6
		Non-U.S.
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Service cost	$	1.3		$	1		$	3.6		$	2.8
	Interest cost	4.4			2.6			13.1			7.8
	Expected return on plan assets	(4.3		)	(2.4		)	(13.0		)	(7.2		)
	Net amortization of:
	Prior service costs	—			—			—			—
	Plan net actuarial losses	0.7			0.4			2.1			1.3
	Net periodic pension benefit cost	$	2.1		$	1.6		$	5.8		$	4.7
	Net curtailment gain	3.2			—			3.2			—
	Net periodic pension benefit cost after curtailment	$	5.3		$	1.6		$	9		$	4.7
Other Postretirement Benefit Plans [Member]	'
Schedule of Net Periodic Benefit Cost	'
	The components of net periodic postretirement benefit cost for the three and nine months ended September 30 were as follows:
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Service cost	$	—		$	0.1		$	0.1		$	0.2
	Interest cost	0.1			0.1			0.4			0.4
	Net amortization of:
	Prior service gains	(0.4		)	(0.6		)	(1.2		)	(1.7		)
	Net actuarial losses	—			0.1			—			0.2
	Net periodic postretirement benefit cost	$	(0.3	)	$	(0.3	)	$	(0.7	)	$	(0.9	)

Fair_Value_Measurement_Tables

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value, Assets Measured on Recurring and Nonrecurring Basis	'
	Assets and liabilities measured at fair value at September 30, 2014 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)		fair value
	Recurring fair value measurements
	Assets:
	Marketable securities	$	18.1	$	—	$	—	$	18.1
	Foreign currency contracts	—		2.9		—		2.9
	Interest rate swap	—		0.8		—		—
	Total asset recurring fair value measurements	18.1		3.7		—		21
	Liabilities:
	Foreign currency contracts	—		6.4		—		6.4
	Total liability recurring fair value measurements	—		6.4		—		6.4
	Financial instruments not carried at fair value
	Total debt	—		1,282.10		—		1,282.10
	Total financial instruments not carried at fair value	$	—	$	1,282.10	$	—	$	1,282.10
	Assets and liabilities measured at fair value at December 31, 2013 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)		fair value
	Recurring fair value measurements
	Assets:
	Marketable securities	$	20.2	$	—	$	—	$	20.2
	Foreign currency contracts	—		0.7		—		0.7
	Total asset recurring fair value measurements	20.2		0.7		—		20.9
	Liabilities:
	Foreign currency contracts	—		2.7		—		2.7
	Total liability recurring fair value measurements	—		2.7		—		2.7
	Financial instruments not carried at fair value
	Total debt	—		1,356.30		—		1,356.30
	Total financial instruments not carried at fair value	$	—	$	1,356.30	$	—	$	1,356.30

Equity_Tables

Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Reconciliation of Ordinary Shares	'
	The reconciliation of Ordinary shares is as follows:
	In millions	Total
	December 31, 2013	96
	Shares issued under incentive plans, net	0.8
	Repurchase of ordinary shares	(1.0	)
	September 30, 2014	95.8
Components Of Shareholders Equity Rollforward	'
	The components of Equity for the nine months ended September 30, 2014 were as follows:
	In millions	Allegion plc				Noncontrolling				Total
		shareholders’				interests				equity
		equity
	Balance at December 31, 2013	$	(86.8	)		$	31.1			$	(55.7	)
	Net earnings	139.4				10.6				150
	Currency translation	(41.6		)		(0.5		)		(42.1		)
	Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	0.7				—				0.7
	Pension and OPEB adjustments, net of tax	8				—				8
	Total comprehensive income	106.5				10.1				116.6
	Share-based compensation	9.7				—				9.7
	Dividends to noncontrolling interests	—				(4.5		)		(4.5		)
	Dividends to ordinary shareholders	(23.0		)		—				(23.0		)
	Repurchase of ordinary shares	(50.3		)		—				(50.3		)
	Shares issued under incentive plans, net	16.4				—				16.4
	Other	(3.2		)		—				(3.2		)
	Balance at September 30, 2014	$	(30.7	)		$	36.7			$	6
	The components of Equity for the nine months ended September 30, 2013 were as follows:
	In millions	Allegion plc				Noncontrolling				Total
		shareholders’				interests				equity
		equity
	Balance at December 31, 2012	$	1,343.20			$	23			$	1,366.20
	Net earnings	21.6				13.9				35.5
	Currency translation	(56.9		)		0.9				(56.0		)
	Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	4.9				—				4.9
	Pension and OPEB adjustments, net of tax	3.3				—				3.3
	Total comprehensive income	(27.1		)		14.8				(12.3		)
	Dividends to noncontrolling interests	—				(5.2		)		(5.2		)
	Distribution/contribution to/from Parent Company	(47.7		)		—				(47.7		)
	Balance at September 30, 2013	$	1,268.40			$	32.6			$	1,301.00
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	The changes in Accumulated other comprehensive income (loss) for the nine months ended September 30, 2014 are as follows:
	In millions		Cash flow hedges and marketable securities				Pension and OPEB Items				Foreign Currency Items			Total
	December 31, 2013		$	16.7			$	(131.3	)		$	18		$	(96.6	)
	Other comprehensive income before reclassifications		3.2				5.1				(41.6		)	(33.3		)
	Amounts reclassified from accumulated other comprehensive income		(2.5		)		2.9				—			0.4
	Tax (expense) benefit		(0.2		)		—				—			(0.2		)
	September 30, 2014		$	17.2			$	(123.3	)		$	(23.6	)	$	(129.7	)
	The changes in Accumulated other comprehensive income (loss) for the nine months ended September 30, 2013 are as follows:
	In millions		Cash flow hedges and marketable securities				Pension and OPEB Items				Foreign Currency Items			Total
	December 31, 2012		$	10.9			$	(95.7	)		$	77.1		$	(7.7	)
	Other comprehensive income before reclassifications		5.8				0.2				(57.1		)	(51.1		)
	Amounts reclassified from accumulated other comprehensive income		(0.9		)		3.1				—			2.2
	Tax (expense) benefit		0.2				—				—			0.2
	September 30, 2013		$	16			$	(92.4	)		$	20		$	(56.4	)
Disclosure of Reclassification Amount	'
	The reclassifications out of Accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2014 were as follows:
			Amount Reclassified from Accumulated Other Comprehensive Income
	In millions		Three months ended				Nine months ended				Statement of Comprehensive Income Line Item
	Reclasses below represent (Income) loss to the Statement of Comprehensive Income
	Gains and losses on cash flow hedges:
	Foreign exchange contracts		$	(1.9	)		$	(2.5	)		Cost of goods sold
			(1.9		)		(2.5		)		Earnings before income taxes
			(0.3		)		(0.2		)		Provision for income taxes
			$	(2.2	)		$	(2.7	)		Earnings from continuing operations
	Defined benefit pension items:
	Amortization of:
	Prior-service (gains) costs		$	(0.3	)		$	(0.7	)		(a)
	Actuarial (gains) losses		1.2				3.6				(a)
			0.9				2.9				Earnings from continuing operations
	Total reclassifications for the period		$	(1.3	)		$	0.2			Earnings from continuing operations
	(a) These accumulated other comprehensive income components are included in the computation of net periodic pension cost and net periodic postretirement benefit cost (see Note 9 for additional details).
	The reclassifications out of Accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2013 were as follows:
			Amount Reclassified from Accumulated Other Comprehensive Income
	In millions		Three months ended				Nine months ended				Statement of Comprehensive Income Line Item
	Reclasses below represent (Income) loss to the Statement of Comprehensive Income
	Gains and losses on cash flow hedges:
	Foreign exchange contracts		$	(0.3	)		$	(0.9	)		Cost of goods sold
			(0.3		)		(0.9		)		Earnings before income taxes
			0.2				0.2				Provision for income taxes
			$	(0.1	)		$	(0.7	)		Earnings from continuing operations
	Defined benefit pension items:
	Amortization of:
	Prior-service (gains) costs		$	(0.5	)		$	(1.3	)		(a)
	Actuarial (gains) losses		1.5				4.4				(a)
			1				3.1				Earnings from continuing operations
	Total reclassifications for the period		$	0.9			$	2.4			Earnings from continuing operations
	(a) These accumulated other comprehensive income components are included in the computation of net periodic pension cost and net periodic postretirement benefit cost (see Note 9 for additional details).

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Share-Based Compensation Expense	'
	The expenses recognized for the three and nine months ended September 30 were as follows:
		Three months ended								Nine months ended
	In millions	2014				2013				2014				2013
	Stock options	$	0.8			$	0.3			$	2.7			$	1.4
	RSUs	1.3				0.6				4.5				2.1
	PSUs	1.1				0.2				2.5				0.9
	Deferred compensation	—				0.6				0.5				1.2
	Pre-tax expense	3.2				1.7				10.2				5.6
	Tax benefit	(1.1		)		(0.6		)		(3.6		)		(2.1		)
	After-tax expense	$	2.1			$	1.1			$	6.6			$	3.5
Grants of Stock Options and RSUs	'
	Grants issued during the nine months ended September 30 were as follows:
		2014							2013
		Number			Weighted-				Number			Weighted-
		granted			average fair				granted			average fair
					value per award							value per award
	Stock options	188,817			$	19.54			123,200			$	16.5
	RSUs	101,653			$	54.29			50,197			$	52.6
Average fair value of stock options, assumptions	'
	The following assumptions were used during the nine months ended September 30:
		2014			2013
	Dividend yield	0.6	%		1.6	%
	Volatility	36.55	%		42.14	%
	Risk-free rate of return	1.94	%		0.85	%
	Expected life	6.0 years			5.1 years

Restructuring_Activities_Table

Restructuring Activities (Tables)	9 Months Ended
	Sep. 30, 2014
Restructuring Charges [Abstract]	'
Schedule of Restructuring Charges Recorded	'
	estructuring charges recorded during the three and nine months ended September 30 as part of prior restructuring plans were as follows:
		Nine months ended
	In millions	2014			2013
	Americas	$	—		$	0.1
	EMEIA	0.8			4.5
	Total	$	0.8		$	4.6
	Cost of goods sold	$	0.2		$	2.3
	Selling and administrative expenses	0.6			2.3
	Total	$	0.8		$	4.6
	In the second quarter of 2014, management committed to a plan to restructure the EMEIA segment to improve efficiencies and regional cost structure. Expenses incurred for this plan for the three and nine months ended September 30, 2014 were as follows:
		Three months ended						Nine months ended
	In millions	2014			2013			2014		2013
	EMEIA	$	0.2		$	—		$	4.6	$	—
	Total	$	0.2		$	—		$	4.6	$	—
	Cost of goods sold	$	0.1		$	—		$	1.1	$	—
	Selling and administrative expenses	0.1			—			3.5		—
	Total	$	0.2		$	—		$	4.6	$	—
Schedule of Changes in Restructuring Reserve	'
	The changes in the restructuring reserve during the nine months ended September 30, 2014 were as follows:
	In millions	EMEIA			Total
	December 31, 2013	$	2.8		$	2.8
	Additions	5.4			5.4
	Cash and non-cash uses	(6.3		)	(6.3		)
	September 30, 2014	$	1.9		$	1.9

Other_Net_Tables

Other, Net (Tables)	9 Months Ended
	Sep. 30, 2014
Other Net [Abstract]	'
Other, Net	'
	The components of Other, net for the three and nine months ended September 30 were as follows:
		Three months ended					Nine months ended
	In millions	2014			2013		2014			2013
	Interest income	$	(0.1	)	$	—	$	(0.4	)	$	(0.1	)
	Exchange (gain) loss	(1.7		)	—		(2.3		)	6.9
	Other	(0.2		)	0.2		(0.4		)	0.1
	Other (gain) loss, net	$	(2.0	)	$	0.2	$	(3.1	)	$	6.9

Earnings_Per_Share_EPS_Tables

Earnings Per Share (EPS) (Tables)	9 Months Ended
	Sep. 30, 2014
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 earnings per share calculations for the three and nine months ended September 30:
		Three months ended		Nine months ended
	In millions	2014	2013	2014	2013
	Weighted-average number of basic shares	95.9	96	96.2	96
	Shares issuable under incentive stock plans	1	—	1.1	—
	Weighted-average number of diluted shares	96.9	96	97.3	96

Business_Segment_Information_T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
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	2014			2013			2014			2013
	Net revenues
	Americas	$	423.1		$	405		$	1,169.20		$	1,154.10
	EMEIA	89.5			92.1			289.9			286
	Asia Pacific	34.1			31.9			85.7			85.8
	Total	$	546.7		$	529		$	1,544.80		$	1,525.90
	Segment operating income (loss)
	Americas	$	122.8		$	109.5		$	320.1		$	302.8
	EMEIA (a)	0.4			(5.1		)	(4.3		)	(11.1		)
	Asia Pacific (b)	(0.5		)	20.6			(7.0		)	18.7
	Total	122.7			125			308.8			310.4
	Reconciliation to Operating income
	Asset impairment (a)	—			(137.6		)	—			(137.6		)
	Unallocated corporate expense	(17.1		)	(8.8		)	(46.1		)	(24.7		)
	Operating income	$	105.6		$	(21.4	)	$	262.7		$	148.1
	Reconciliation to Earnings before income taxes
	Interest expense	12.7			0.5			38.3			1.4
	Other (gain) loss, net	(2.0		)	0.2			(3.1		)	6.9
	Earnings before income taxes	$	94.9		$	(22.1	)	$	227.5		$	139.8

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2014
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	2014			2013
	Balance at beginning of period	$	9.7		$	9.5
	Reductions for payments	(5.0		)	(4.4		)
	Accruals for warranties issued during the current period	5			3.4
	Changes to accruals related to preexisting warranties	0.5			0.3
	Translation	(0.2		)	—
	Balance at end of period	$	10		$	8.8

Guarantor_Financial_Informatio1

Guarantor Financial Information (Tables)	9 Months Ended
	Sep. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Cash Flow Statement [Table Text Block]	'
	Condensed and Consolidated Statement of Cash Flows
	For the nine months ended September 30, 2014
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net cash provided by (used in) continuing operating activities	$	56.2		$	(13.2	)	$	81.9		$	135.1		$	(85.2	)	$	174.8
	Net cash provided by (used in) discontinued operating activities	—			—			—			(2.8		)	—			(2.8		)
	Net cash provided by (used in) operating activities	56.2			(13.2		)	81.9			132.3			(85.2		)	172
	Cash flows from investing activities:
	Capital expenditures	—			—			(32.9		)	(6.9		)	—			(39.8		)
	Acquisition of businesses, net of cash acquired	—			—			—			(23.0		)	—			(23.0		)
	Other investing activities, net	—			—			0.6			41.3			—			41.9
	Net cash provided by (used in) investing activities	—			—			(32.3		)	11.4			—			(20.9		)
	Cash flows from financing activities:
	Net debt repayments	—			(22.5		)	—			(40.6		)	—			(63.1		)
	Net inter-company proceeds (payments)	—			35.7			14.4			(50.1		)	—			—
	Dividends paid to shareholders	(22.6		)	—			(23.7		)	(61.5		)	85.2			(22.6		)
	Repurchase of ordinary shares	(50.3		)	—			—			—			—			(50.3		)
	Other financing activities, net	16.5			—			—			(1.1		)	—			15.4
	Net cash provided by (used in) financing activities	(56.4		)	13.2			(9.3		)	(153.3		)	85.2			(120.6		)
	Effect of exchange rate changes on cash and cash equivalents	—			—			—			(6.5		)	—			(6.5		)
	Net increase (decrease) in cash and cash equivalents	(0.2		)	—			40.3			(16.1		)	—			24
	Cash and cash equivalents - beginning of period	1.4			—			78.8			147.2			—			227.4
	Cash and cash equivalents - end of period	$	1.2		$	—		$	119.1		$	131.1		$	—		$	251.4
	Condensed and Consolidated Statement of Cash Flows
	For the nine months ended September 30, 2013
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net cash provided by (used in) continuing operating activities	$	—		$	—		$	180.7		$	(24.0	)	$	—		$	156.7
	Net cash provided by (used in) discontinued operating activities	—			—			0.2			0.7			—			0.9
	Net cash provided by (used in) operating activities	—			—			180.9			(23.3		)	—			157.6
	Cash flows from investing activities:
	Capital expenditures	—			—			(7.2		)	(4.8		)	—			(12.0		)
	Proceeds from sale of property, plant and equipment	—			—			0.7			23.7			—			24.4
	Net cash provided by (used in) investing activities	—			—			(6.5		)	18.9			—			12.4
	Cash flows from financing activities:
	Net debt proceeds	—			—			—			(0.2		)	—			(0.2		)
	Net transfers from (to) Parent and affiliates	—			—			(162.4		)	43.9			—			(118.5		)
	Other, net	—			—			—			(5.2		)	—			(5.2		)
	Net cash provided by (used in) financing activities	—			—			(162.4		)	38.5			—			(123.9		)
	Effect of exchange rate changes on cash and cash equivalents	—			—			—			4.9			—			4.9
	Net increase (decrease) in cash and cash equivalents	—			—			12			39			—			51
	Cash and cash equivalents - beginning of period	—			—			1.8			315.7			—			317.5
	Cash and cash equivalents - end of period	$	—		$	—		$	13.8		$	354.7		$	—		$	368.5
Condensed Balance Sheet [Table Text Block]	'
	Condensed and Consolidated Balance Sheet
	September 30, 2014
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Current assets:
	Cash and cash equivalents	$	1.2		$	—		$	119.1		$	131.1		$	—		$	251.4
	Accounts and notes receivable, net	—			—			133.5			153.8			—			287.3
	Inventories	—			—			69.6			111.1			—			180.7
	Other current assets	0.2			28.1			23.3			163			—			214.6
	Accounts and notes receivable affiliates	—			1,289.00			3,140.70			280			(4,709.7		)	—
	Total current assets	1.4			1,317.10			3,486.20			839			(4,709.7		)	934
	Investment in affiliates	—			1,435.90			88.7			4,510.20			(6,034.8		)	—
	Property, plant and equipment, net	—			—			147.1			65.4			—			212.5
	Intangible assets, net	—			—			161.1			481.9			—			643
	Notes receivable affiliates	—			—			1,049.00			800			(1,849.0		)	—
	Other noncurrent assets	—			88.4			76			38.3			—			202.7
	Total assets	$	1.4		$	2,841.40		$	5,008.10		$	6,734.80		$	(12,593.5	)	$	1,992.20
	Current liabilities:
	Accounts payable and accruals	$	1.2		$	21.9		$	329		$	81.8		$	—		$	433.9
	Short-term borrowings and current maturities of long-term debt	—			30			0.1			0.2			—			30.3
	Accounts and note payable affiliates	0.1			186.5			247.2			4,275.90			(4,709.7		)	—
	Total current liabilities	1.3			238.4			576.3			4,357.90			(4,709.7		)	464.2
	Long-term debt	—			1,247.50			0.1			1.6			—			1,249.20
	Note payable affiliate	—			1,810.90			—			38			(1,848.9		)	—
	Estimated loss on investment	30.9			—			—			—			(30.9		)	—
	Other noncurrent liabilities	(0.1		)	104			147.6			21.3			—			272.8
	Total liabilities	32.1			3,400.80			724			4,418.80			(6,589.5		)	1,986.20
	Equity:
	Total shareholders equity (deficit)	(30.7		)	(559.4		)	4,284.10			2,279.30			(6,004.0		)	(30.7		)
	Noncontrolling interests	—			—			—			36.7			—			36.7
	Total equity (deficit)	(30.7		)	(559.4		)	4,284.10			2,316.00			(6,004.0		)	6
	Total liabilities and equity	$	1.4		$	2,841.40		$	5,008.10		$	6,734.80		$	(12,593.5	)	$	1,992.20
	Condensed and Consolidated Balance Sheet
	December 31, 2013
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Current assets:
	Cash and cash equivalents	$	1.4		$	—		$	78.8		$	147.2		$	—		$	227.4
	Restricted cash	—			—			—			40.2			—			40.2
	Accounts and notes receivable, net	—			—			110.2			149.8			—			260
	Inventories	—			—			64.3			89.3			—			153.6
	Other current assets	0.1			—			31.5			202			—			233.6
	Assets held for sale	—			—			—			11.2			—			11.2
	Accounts receivable affiliates	0.4			24.7			75.1			185.8			(286.0		)	—
	Total current assets	1.9			24.7			359.9			825.5			(286.0		)	926
	Investment in affiliates	—			1,236.10			84.9			4,023.20			(5,344.2		)	—
	Property, plant and equipment, net	—			—			130.9			69.3			—			200.2
	Intangible assets, net	—			—			161.2			489.8			—			651
	Notes receivable affiliates	—			1,191.90			3,726.40			800			(5,718.3		)	—
	Other noncurrent assets	—			93.3			72.3			37.1			—			202.7
	Total assets	$	1.9		$	2,546.00		$	4,535.60		$	6,244.90		$	(11,348.5	)	$	1,979.90
	Current liabilities:
	Accounts payable and accruals	$	1.3		$	14		$	175.6		$	227.7		$	—		$	418.6
	Short-term borrowings and current maturities of long-term debt	—			30			0.1			41.8			—			71.9
	Accounts and note payable affiliates	0.2			23.3			189.6			72.9			(286.0		)	—
	Total current liabilities	1.5			67.3			365.3			342.4			(286.0		)	490.5
	Long-term debt	—			1,270.00			0.2			1.8			—			1,272.00
	Note payable affiliate	—			1,810.90			—			3,907.40			(5,718.3		)	—
	Estimated loss on investment	87.2			—			—			—			(87.2		)	—
	Other noncurrent liabilities	—			58.5			61.9			152.7			—			273.1
	Total liabilities	88.7			3,206.70			427.4			4,404.30			(6,091.5		)	2,035.60
	Equity:
	Total shareholders equity (deficit)	(86.8		)	(660.7		)	4,108.20			1,809.50			(5,257.0		)	(86.8		)
Noncontrolling interests	—			—			—			31.1			—			31.1
Total equity (deficit)	(86.8		)	(660.7		)	4,108.20			1,840.60			(5,257.0		)	(55.7		)
Total liabilities and equity	$	1.9		$	2,546.00		$	4,535.60		$	6,244.90		$	(11,348.5	)	$	1,979.90
Condensed Statement Of Comprehensive Income [Table Text Block]	'
	Condensed and Consolidated Statement of Comprehensive Income
	For the three months ended September 30, 2014
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net revenues	$	—		$	—		$	375.5		$	222.6		$	(51.4	)	$	546.7
	Cost of goods sold	—			—			214.4			147.6			(51.4		)	310.6
	Selling and administrative expenses	1.4			—			77.1			52			—			130.5
	Operating income (loss)	(1.4		)	—			84			23			—			105.6
	Equity earnings (loss) in affiliates, net of tax	62.3			80.6			3.8			100.1			(246.8		)	—
	Interest expense	—			12.7			—			—			—			12.7
	Intercompany interest and fees	—			12.7			(75.4		)	62.7			—			—
	Other (gain) loss, net	—			—			(0.2		)	(1.8		)	—			(2.0		)
	Earnings (loss) before income taxes	60.9			55.2			163.4			62.2			(246.8		)	94.9
	Provision (benefit) for income taxes	0.3			9.5			59.5			(42.1		)	—			27.2
	Earnings (loss) from continuing operations	60.6			45.7			103.9			104.3			(246.8		)	67.7
	Discontinued operations, net of tax	—			—			—			(2.1		)	—			(2.1		)
	Net earnings (loss)	60.6			45.7			103.9			102.2			(246.8		)	65.6
	Less: Net earnings attributable to noncontrolling interests	—			—			—			5.3			—			5.3
	Net earnings (loss) attributable to Allegion plc	$	60.6		$	45.7		$	103.9		$	96.9		$	(246.8	)	$	60.3
	Total comprehensive income (loss)	$	40.5		$	45.7		$	103.9		$	97.2		$	(246.8	)	$	40.5
	Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			5.7			—			5.7
	Total comprehensive income (loss) attributable to Allegion plc	$	40.5		$	45.7		$	103.9		$	91.5		$	(246.8	)	$	34.8
	Condensed and Consolidated Statement of Comprehensive Income
	For the nine months ended September 30, 2014
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net revenues	$	—		$	—		$	1,054.20		$	637.9		$	(147.3	)	$	1,544.80
	Cost of goods sold	—			—			602.7			435.2			(147.3		)	890.6
	Selling and administrative expenses	3.4			—			220.9			167.2			—			391.5
	Operating income (loss)	(3.4		)	—			230.6			35.5			—			262.7
	Equity earnings (loss) in affiliates, net of tax	142.8			156.3			6.2			286.7			(592.0		)	—
	Interest expense	—			37.4			—			0.9			—			38.3
	Intercompany interest and fees	—			37.6			(226.6		)	189			—			—
	Other (gain) loss, net	—			—			(0.1		)	(3.0		)	—			(3.1		)
	Earnings (loss) before income taxes	139.4			81.3			463.5			135.3			(592.0		)	227.5
	Provision (benefit) for income taxes	—			(28.1		)	170.6			(75.9		)	—			66.6
	Earnings (loss) from continuing operations	139.4			109.4			292.9			211.2			(592.0		)	160.9
	Discontinued operations, net of tax	—			—			—			(10.9		)	—			(10.9		)
	Net earnings (loss)	139.4			109.4			292.9			200.3			(592.0		)	150
	Less: Net earnings attributable to noncontrolling interests	—			—			—			10.6			—			10.6
	Net earnings (loss) attributable to Allegion plc	$	139.4		$	109.4		$	292.9		$	189.7		$	(592.0	)	$	139.4
	Total comprehensive income (loss)	$	106.5		$	109.4		$	292.9		$	199.8		$	(592.0	)	$	116.6
	Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			10.1			—			10.1
	Total comprehensive income (loss) attributable to Allegion plc	$	106.5		$	109.4		$	292.9		$	189.7		$	(592.0	)	$	106.5
	Condensed and Consolidated Statement of Comprehensive Income
	For the three months ended September 30, 2013
	In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
											Subsidiaries			Adjustments
	Net revenues	$	—		$	—		$	363.8		$	219.4		$	(54.2	)	$	529
	Cost of goods sold	—			—			206.6			138.2			(54.2		)	290.6
	Selling and administrative expenses	—			—			56.1			66.1			—			122.2
	Goodwill impairment charge	—			—			—			137.6			—			137.6
	Operating income (loss)	—			—			101.1			(122.5		)	—			(21.4		)
	Equity earnings (loss) in affiliates, net of tax	(78.2		)	(11.8		)	0.7			62.4			26.9			—
	Interest expense	—			—			—			0.5			—			0.5
	Other (gain) loss, net	—			—			1.1			(0.9		)	—			0.2
	Earnings (loss) before income taxes	(78.2		)	(11.8		)	100.7			(59.7		)	26.9			(22.1		)
	Provision (benefit) for income taxes	—			—			37.5			8			—			45.5
	Earnings (loss) from continuing operations	(78.2		)	(11.8		)	63.2			(67.7		)	26.9			(67.6		)
	Discontinued operations, net of tax	—			—			(0.1		)	(0.3		)	—			(0.4		)
	Net earnings (loss)	(78.2		)	(11.8		)	63.1			(68.0		)	26.9			(68.0		)
	Less: Net earnings attributable to noncontrolling interests	—			—			—			10.1			—			10.1
	Net earnings (loss) attributable to Allegion plc	$	(78.2	)	$	(11.8	)	$	63.1		$	(78.1	)	$	26.9		$	(78.1	)
Total comprehensive income (loss)	$	(107.3	)	$	(11.8	)	$	63.1		$	(78.1	)	$	26.9		$	(107.2	)
Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			10.3			—			10.3
Total comprehensive income (loss) attributable to Allegion plc	$	(107.3	)	$	(11.8	)	$	63.1		$	(88.4	)	$	26.9		$	(117.5	)
Condensed and Consolidated Statement of Comprehensive Income
For the nine months ended September 30, 2013
In millions	Parent			Issuer			Subsidiary Guarantors			Other			Consolidating			Allegion plc
										Subsidiaries			Adjustments
Net revenues	$	—		$	—		$	1,033.60		$	649.5		$	(157.2	)	$	1,525.90
Cost of goods sold	—			—			584.4			455.8			(157.2		)	883
Selling and administrative expenses	—			—			160.6			196.6			—			357.2
Goodwill impairment charge	—			—			—			137.6			—			137.6
Operating income (loss)	—			—			288.6			(140.5		)	—			148.1
Equity earnings (loss) in affiliates, net of tax	21.5			125.3			2.2			180.2			(329.2		)	—
Interest expense	—			—			0.1			1.3			—			1.4
Other (gain) loss, net	—			—			0.4			6.5			—			6.9
Earnings (loss) before income taxes	21.5			125.3			290.3			31.9			(329.2		)	139.8
Provision (benefit) for income taxes	—			—			108.1			(5.7		)	—			102.4
Earnings (loss) from continuing operations	21.5			125.3			182.2			37.6			(329.2		)	37.4
Discontinued operations, net of tax	—			—			0.2			(2.1		)	—			(1.9		)
Net earnings (loss)	21.5			125.3			182.4			35.5			(329.2		)	35.5
Less: Net earnings attributable to noncontrolling interests	—			—			—			13.9			—			13.9
Net earnings (loss) attributable to Allegion plc	$	21.5		$	125.3		$	182.4		$	21.6		$	(329.2	)	$	21.6
Total comprehensive income (loss)	$	(12.3	)	$	125.3		$	182.4		$	21.5		$	(329.2	)	$	(12.3	)
Less: Total comprehensive income attributable to noncontrolling interests	—			—			—			14.8			—			14.8
Total comprehensive income (loss) attributable to Allegion plc	$	(12.3	)	$	125.3		$	182.4		$	6.7		$	(329.2	)	$	(27.1	)

Discontinued_Operations_Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]	'
	Net revenues and after-tax earnings of the component for the three and nine months ended September 30 were as follows:
		Three months ended						Nine months ended
	In millions	2014			2013			2014			2013
	Net revenues	$	4.3		$	6.3		$	16.1		$	17
	After-tax loss from operations	$	(0.3	)	$	(0.5	)	$	(2.0	)	$	(1.6	)
	Loss on disposal	(1.0		)	—			(7.6		)	—
	Discontinued operations, net of tax	$	(1.3	)	$	(0.5	)	$	(9.6	)	$	(1.6	)

Inventories_Schedule_of_Major_

Inventories (Schedule of Major Classes of Inventory) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Inventory, Net [Abstract]	'	'
Raw materials	$62.80	$68.30
Work-in-process	46.9	34.5
Finished goods	105.4	84.6
Sub-total	215.1	187.4
LIFO reserve	-34.4	-33.8
Total	$180.70	$153.60

Goodwill_Details

Goodwill (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Goodwill [Roll Forward]	'		'	'		'	'
December 31, 2013 (gross)	'		'	$990.40		'	'
Acquisitions	'		'	12.6		'	'
Currency translation	'		'	-7.6		'	'
September 30, 2014 (gross)	995.4		'	995.4		'	'
Accumulated impairment	-485.5		'	-485.5		'	'
Goodwill (net)	509.9		'	509.9		'	504.9
Goodwill impairment charge	0		137.6	0		137.6	'
Americas [Member]	'		'	'		'	'
Goodwill [Roll Forward]	'		'	'		'	'
December 31, 2013 (gross)	'		'	362.8		'	'
Acquisitions	'		'	2.3		'	'
Currency translation	'		'	0		'	'
September 30, 2014 (gross)	365.1		'	365.1		'	'
Accumulated impairment	0		'	0		'	'
Goodwill (net)	365.1		'	365.1		'	'
EMEIA [Member]	'		'	'		'	'
Goodwill [Roll Forward]	'		'	'		'	'
December 31, 2013 (gross)	'		'	540		'	'
Acquisitions	'		'	0		'	'
Currency translation	'		'	-4.6		'	'
September 30, 2014 (gross)	535.4		'	535.4		'	'
Accumulated impairment	-478.6	[1]	'	-478.6	[1]	'	'
Goodwill (net)	56.8		'	56.8		'	'
Goodwill impairment charge	'		137.6	'		'	'
Asia Pacific [Member]	'		'	'		'	'
Goodwill [Roll Forward]	'		'	'		'	'
December 31, 2013 (gross)	'		'	87.6		'	'
Acquisitions	'		'	10.3		'	'
Currency translation	'		'	-3		'	'
September 30, 2014 (gross)	94.9		'	94.9		'	'
Accumulated impairment	-6.9		'	-6.9		'	'
Goodwill (net)	$88		'	$88		'	'
[1]	The Company recorded a $137.6 million goodwill impairment charge in the EMEIA segment in the third quarter of 2013.

Intangible_Assets_Details

Intangible Assets (Details) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]	'	'	'	'
Finite-lived intangible assets, gross	'	$231.60	'	$249
Accumulated amortization	'	-108.7	'	-111.9
Net finite-lived intangible assets	'	122.9	'	137.1
Total intangible assets, gross	'	241.8	'	258
Intangible assets, net	'	133.1	'	146.1
Amortization of intangible assets	2.5	7.4	7.1	'
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'	'	'	'
2014	'	10	'	'
2015	'	8	'	'
2016	'	8	'	'
2017	'	8	'	'
2018	'	8	'	'
Trademarks [Member]	'	'	'	'
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]	'	'	'	'
Trademarks (indefinite-lived)	'	10.2	'	9
Completed technologies/patents [Member]	'	'	'	'
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]	'	'	'	'
Finite-lived intangible assets, gross	'	28.5	'	26.4
Accumulated amortization	'	-23.3	'	-23.6
Net finite-lived intangible assets	'	5.2	'	2.8
Customer relationships [Member]	'	'	'	'
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]	'	'	'	'
Finite-lived intangible assets, gross	'	99.3	'	107.8
Accumulated amortization	'	-38.2	'	-38.1
Net finite-lived intangible assets	'	61.1	'	69.7
Trademarks [Member]	'	'	'	'
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]	'	'	'	'
Finite-lived intangible assets, gross	'	93.2	'	101.4
Accumulated amortization	'	-36.6	'	-36.8
Net finite-lived intangible assets	'	56.6	'	64.6
Other Intangible Assets [Member]	'	'	'	'
Schedule of Acquired Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]	'	'	'	'
Finite-lived intangible assets, gross	'	10.6	'	13.4
Accumulated amortization	'	-10.6	'	-13.4
Net finite-lived intangible assets	'	$0	'	$0

Acquisition_Details

Acquisition (Details) (USD $)	0 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2014
Business Acquisition [Line Items]	'
Cash payment	$23

Debt_and_Credit_Facilities_Sum

Debt and Credit Facilities (Summary of Debt) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Other debt, including capital leases, maturing in various amounts through 2016	$2	$43.90
Total debt	1,279.50	1,343.90
Less: current portion of long term debt	30.3	71.9
Long-term debt	1,249.20	1,272
Secured Debt [Member] | Term Loan A Facility Due 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt	985	'
Secured Debt [Member] | Subsidiaries [Member] | Term Loan A Facility Due 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt	481.2	500
Secured Debt [Member] | Subsidiaries [Member] | Term Loan B Facility Due 2020 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt	496.3	500
Senior Notes [Member] | Subsidiaries [Member] | 5.75% Senior Notes Due 2021 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt	$300	$300
Stated interest rate for debt instruments	5.75%	'

Debt_and_Credit_Facilities_Nar

Debt and Credit Facilities (Narrative) (Details) (Subsidiaries [Member], USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Debt Instrument [Line Items]	'	'
Letters of credit outstanding amount	29,200,000	'
Revolving Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Line of credit facility, borrowing capacity	500,000,000	'
Secured Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Principal amount of notes	1,000,000,000	'
Debt repayments	22,500,000	'
Weighted-average interest rate	2.60%	'
Secured Debt [Member] | Term Loan A Facility Due 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Principal amount of notes	500,000,000	'
Secured Debt [Member] | Term Loan A Facility Due 2018 [Member] | London Interbank Offered Rate (LIBOR) [Member]	'	'
Debt Instrument [Line Items]	'	'
Variable interest rate	2.00%	'
Stated interest rate percentage, minimum	1.75%	'
Stated interest rate percentage, maximum	2.25%	'
Secured Debt [Member] | Term Loan B Facility Due 2020 [Member]	'	'
Debt Instrument [Line Items]	'	'
Principal amount of notes	500,000,000	'
Secured Debt [Member] | Term Loan B Facility Due 2020 [Member] | London Interbank Offered Rate (LIBOR) [Member]	'	'
Debt Instrument [Line Items]	'	'
Variable interest rate	'	2.25%
Stated interest rate percentage, minimum	0.75%	'
Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Weighted-average interest rate	5.75%	'
Senior Notes [Member] | 5.75% Senior Notes Due 2021 [Member]	'	'
Debt Instrument [Line Items]	'	'
Principal amount of notes	300,000,000	'
Stated interest rate for debt instruments	5.75%	'

Financial_Instruments_Narrativ

Financial Instruments (Narrative) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Deferred gain/loss, net of tax, included in accumulated other comprehensive income (AOCI) related to the fair value of the Company's currency derivatives designated as accounting hedges	($129,700,000)	($96,600,000)	($56,400,000)	($7,700,000)
Currency derivatives expected to be reclassified into earnings over the next twelve months	900,000	'	'	'
Designated as Hedging Instrument [Member]	'	'	'	'
Notional amounts of currency derivatives	154,000,000	209,600,000	'	'
Deferred gain/loss, net of tax, included in accumulated other comprehensive income (AOCI) related to the fair value of the Company's currency derivatives designated as accounting hedges	900,000	500,000	'	'
Interest Rate Swap [Member]	'	'	'	'
Deferred gain/loss, net of tax, included in accumulated other comprehensive income (AOCI) related to the fair value of the Company's currency derivatives designated as accounting hedges	800,000	'	'	'
Interest Rate Swap Expiration September 2017 [Member]	'	'	'	'
Notional amounts of currency derivatives	275,000,000	'	'	'
Interest Rate Swap Expiration December 2016 [Member]	'	'	'	'
Notional amounts of currency derivatives	25,000,000	'	'	'
Interest Rate Swap [Member]	'	'	'	'
Principal amount of notes	300,000,000	'	'	'
Term Loan A Facility Due 2018 [Member] | Secured Debt [Member]	'	'	'	'
Long-term debt	$985,000,000	'	'	'

Financial_Instruments_Schedule

Financial Instruments (Schedule of the Fair Values of Derivative Instruments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Derivative asset fair value	$3.70	$0.70
Derivative liability fair value	6.4	2.7
Cash Flow Hedging [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivatives designated as hedges, asset at fair value	1.2	0.7
Derivatives designated as hedges, liability at fair value	0	0
Interest Rate Swap [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Interest Rate Derivative Liabilities, at Fair Value	0	0
Interest Rate Derivative Assets, at Fair Value	0.8	0
Nondesignated [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivatives not designated as hedges, asset at fair value	1.7	0
Derivatives not designated as hedges, liability at fair value	6.4	2.7
Recurring fair value measurements [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Interest Rate Derivative Assets, at Fair Value	0	'
Derivative asset fair value	2.9	0.7
Derivative liability fair value	6.4	2.7
Significant Other Observable Inputs (Level 2) [Member] | Recurring fair value measurements [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Interest Rate Derivative Assets, at Fair Value	0.8	'
Derivative asset fair value	2.9	0.7
Derivative liability fair value	$6.40	$2.70

Financial_Instruments_Schedule1

Financial Instruments (Schedule of Derivatives Designated as Hedges Affecting Condensed Consolidated Income Statement and Accumulated Other Comprehensive Income) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income	$1.70	$1.10
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income	2.5	0.9
Currency Derivatives [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income	0.9	1.1
Interest Rate Swap [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income	0.8	0
Cost of Goods Sold [Member] | Currency Derivatives [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income	2.5	0.9
Interest Expense [Member] | Interest Rate Swap [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income	$0	$0

Pensions_and_Postretirement_Be2

Pensions and Postretirement Benefits Other than Pensions (Narrative) (Details) (Pension Plans [Member], USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Pension Plans [Member]	'	'
Company contributions	$1.20	$0.90
Additional contributions expected during the remainder of the year	$15.70	'

Pensions_and_Postretirement_Be3

Pensions and Postretirement Benefits Other than Pensions (Components of the Company's Pension-Related Costs) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net periodic pension benefit cost after curtailment	$5.30	$1.60	$9	$4.70
UNITED STATES | Pension Cost [Member]	'	'	'	'
Service cost	1.7	2.3	5.3	6.7
Interest cost	2.8	2.5	8.4	7.6
Expected return on plan assets	-2.7	-2.7	-8.3	-8
Net amortization of prior service costs	0.1	0.1	0.5	0.4
Net amortization of plan net actuarial losses	0.5	1	1.5	2.9
Net periodic pension benefit cost	2.4	3.2	7.4	9.6
Non-U.S. [Member] | Pension Cost [Member]	'	'	'	'
Service cost	1.3	1	3.6	2.8
Interest cost	4.4	2.6	13.1	7.8
Expected return on plan assets	-4.3	-2.4	-13	-7.2
Net amortization of prior service costs	0	0	0	0
Net amortization of plan net actuarial losses	0.7	0.4	2.1	1.3
Net periodic pension benefit cost	2.1	1.6	5.8	4.7
Net curtailment gain	$3.20	$0	$3.20	$0

Pensions_and_Postretirement_Be4

Pensions and Postretirement Benefits Other than Pensions (Components of Net Periodic Postretirement Benefit Cost) (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
					Postretirement Benefit Costs [Member]	Postretirement Benefit Costs [Member]	Postretirement Benefit Costs [Member]	Postretirement Benefit Costs [Member]
Service cost	'	'	'	'	$0	$0.10	$0.10	$0.20
Interest cost	'	'	'	'	0.1	0.1	0.4	0.4
Net amortization of prior service gains	'	'	'	'	-0.4	-0.6	-1.2	-1.7
Net amortization of plan net actuarial losses	'	'	'	'	0	0.1	0	0.2
Total	$5.30	$1.60	$9	$4.70	($0.30)	($0.30)	($0.70)	($0.90)

Fair_Value_Measurement_Details

Fair Value Measurement (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets, fair value measurements [Abstract]	'	'
Derivative instruments	$3.70	$0.70
Liabilities, fair value measurements [Abstract]	'	'
Derivative instruments	6.4	2.7
Recurring fair value measurements [Member]	'	'
Assets, fair value measurements [Abstract]	'	'
Marketable Securities	18.1	20.2
Derivative instruments	2.9	0.7
Interest Rate Derivative Assets, at Fair Value	0	'
Total assets, fair value measurements	21	20.9
Liabilities, fair value measurements [Abstract]	'	'
Derivative instruments	6.4	2.7
Total liability, fair value measurements	6.4	2.7
Recurring fair value measurements [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Assets, fair value measurements [Abstract]	'	'
Marketable Securities	18.1	20.2
Derivative instruments	0	0
Interest Rate Derivative Assets, at Fair Value	0	'
Total assets, fair value measurements	18.1	20.2
Liabilities, fair value measurements [Abstract]	'	'
Derivative instruments	0	0
Total liability, fair value measurements	0	0
Recurring fair value measurements [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Assets, fair value measurements [Abstract]	'	'
Marketable Securities	0	0
Derivative instruments	2.9	0.7
Interest Rate Derivative Assets, at Fair Value	0.8	'
Total assets, fair value measurements	3.7	0.7
Liabilities, fair value measurements [Abstract]	'	'
Derivative instruments	6.4	2.7
Total liability, fair value measurements	6.4	2.7
Recurring fair value measurements [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'
Assets, fair value measurements [Abstract]	'	'
Marketable Securities	0	0
Derivative instruments	0	0
Interest Rate Derivative Assets, at Fair Value	0	'
Total assets, fair value measurements	0	0
Liabilities, fair value measurements [Abstract]	'	'
Derivative instruments	0	0
Total liability, fair value measurements	0	0
Financial Instruments not carried at fair value [Member]	'	'
Liabilities, fair value measurements [Abstract]	'	'
Total debt	1,282.10	1,356.30
Total financial instruments not carried at fair value	1,282.10	1,356.30
Financial Instruments not carried at fair value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Liabilities, fair value measurements [Abstract]	'	'
Total debt	0	0
Total financial instruments not carried at fair value	0	0
Financial Instruments not carried at fair value [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Liabilities, fair value measurements [Abstract]	'	'
Total debt	1,282.10	1,356.30
Total financial instruments not carried at fair value	1,282.10	1,356.30
Financial Instruments not carried at fair value [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'
Liabilities, fair value measurements [Abstract]	'	'
Total debt	0	0
Total financial instruments not carried at fair value	$0	$0

Equity_Reconciliation_of_Ordin

Equity (Reconciliation of Ordinary Shares) (Details) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Increase (Decrease) In Ordinary Shares [Roll Forward]	'	'
Treasury Stock, Shares, Acquired	0.4	1
Treasury Stock, Value, Acquired, Cost Method	($19.90)	($50.30)
Common Stock [Member]	'	'
Increase (Decrease) In Ordinary Shares [Roll Forward]	'	'
31-Dec-13	'	96
Shares issued under incentive plans, net	'	0.8
Treasury Stock, Shares, Acquired	'	-1
30-Sep-14	95.8	95.8

Equity_Components_of_Sharehold

Equity (Components of Shareholders' Equity) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'
Balance at December 31:	'	'	($55.70)	$1,366.20
Net earnings (loss)	65.6	-68	150	35.5
Currency translation	'	'	-42.1	-56
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	'	'	0.7	4.9
Pension and OPEB adjustments, net of tax	'	'	8	3.3
Total comprehensive income	40.5	-107.2	116.6	-12.3
Share-based compensation	'	'	9.7	'
Dividends to noncontrolling interests	'	'	-4.5	-5.2
Dividends to ordinary shareholders	'	'	-23	'
Treasury Stock, Value, Acquired, Cost Method	-19.9	'	-50.3	'
Shares issued under incentive plans, net	'	'	16.4	'
Other	'	'	-3.2	'
Distribution/contribution to/from Parent Company	'	47.7	'	'
Balance at March 31:	6	1,301	6	1,301
Shareholders' Equity [Member]	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'
Balance at December 31:	'	'	-86.8	1,343.20
Net earnings (loss)	'	'	139.4	21.6
Currency translation	'	'	-41.6	-56.9
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	'	'	0.7	4.9
Pension and OPEB adjustments, net of tax	'	'	8	3.3
Total comprehensive income	'	'	106.5	-27.1
Share-based compensation	'	'	9.7	'
Dividends to noncontrolling interests	'	'	0	0
Dividends to ordinary shareholders	'	'	-23	'
Treasury Stock, Value, Acquired, Cost Method	'	'	-50.3	'
Shares issued under incentive plans, net	'	'	16.4	'
Other	'	'	-3.2	'
Distribution/contribution to/from Parent Company	'	47.7	'	'
Balance at March 31:	-30.7	1,268.40	-30.7	1,268.40
Noncontrolling Interest [Member]	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'
Balance at December 31:	'	'	31.1	23
Net earnings (loss)	'	'	10.6	13.9
Currency translation	'	'	-0.5	0.9
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	'	'	0	0
Pension and OPEB adjustments, net of tax	'	'	0	0
Total comprehensive income	'	'	10.1	14.8
Share-based compensation	'	'	0	'
Dividends to noncontrolling interests	'	'	-4.5	-5.2
Dividends to ordinary shareholders	'	'	0	'
Treasury Stock, Value, Acquired, Cost Method	'	'	0	'
Shares issued under incentive plans, net	'	'	0	'
Other	'	'	0	'
Distribution/contribution to/from Parent Company	'	0	'	'
Balance at March 31:	$36.70	$32.60	$36.70	$32.60

Equity_Changes_in_Accumulated_

Equity (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'	'
Balance at December 31:	($96.60)	($7.70)
Other comprehensive income before reclassifications	-33.3	-51.1
Amounts reclassified from accumulated other comprehensive income	0.4	2.2
Tax (expense) benefit	-0.2	0.2
Balance at March 31:	-129.7	-56.4
Cash flow hedges and marketable securities [Member]	'	'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'	'
Balance at December 31:	16.7	10.9
Other comprehensive income before reclassifications	3.2	5.8
Amounts reclassified from accumulated other comprehensive income	-2.5	-0.9
Tax (expense) benefit	-0.2	0.2
Balance at March 31:	17.2	16
Pension and OPEB Adjustments [Member]	'	'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'	'
Balance at December 31:	-131.3	-95.7
Other comprehensive income before reclassifications	5.1	0.2
Amounts reclassified from accumulated other comprehensive income	2.9	3.1
Tax (expense) benefit	0	0
Balance at March 31:	-123.3	-92.4
Foreign Currency Gain (Loss) [Member]	'	'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'	'
Balance at December 31:	18	77.1
Other comprehensive income before reclassifications	-41.6	-57.1
Amounts reclassified from accumulated other comprehensive income	0	0
Tax (expense) benefit	0	0
Balance at March 31:	($23.60)	$20

Equity_Reclassification_Adjust

Equity (Reclassification Adjustments out of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Prior-service (gains) costs	($0.30)	($0.50)	($0.70)	($1.30)
Amortization of actuarial (gains) losses	-1.2	-1.5	3.6	4.4
Earnings before income taxes [Member]	'	'	'	'
Gains and losses on cash flow hedges	1.9	-0.3	-2.5	-0.9
Earnings from continuing operations [Member]	'	'	'	'
Cash flow hedge reclassification adjustments, net of tax	2.2	0.1	-2.7	-0.7
Defined benefit plan reclassification adjustments, net of tax	0.9	1	2.9	3.1
Total reclassifications from Other comprehensive income (loss), net of tax	1.3	-0.9	0.2	2.4
Provision for income taxes [Member]	'	'	'	'
Tax effect on cash flow hedge reclassification adjustments	0.3	0.2	-0.2	0.2
Cost of Goods Sold [Member] | Currency Derivatives [Member]	'	'	'	'
Gains and losses on cash flow hedges	$1.90	$0.30	($2.50)	($0.90)

ShareBased_Compensation_Narrat

Share-Based Compensation (Narrative) (Details)	9 Months Ended	1 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2014
	Stock options and Restricted Stock Units (RSUs) [Member]	Performance Shares [Member]	Performance Shares [Member]	Performance Shares [Member]
			company
Vesting period, in years	'3 years	'	'	'
Maximum award level for eligible employees (in shares)	'	'	'	0.2
Number of companies used in TSR comparison	'	'	41	'
TSR performance period	'	'	'3 years	'
Period for measuring average price for the index	'	'	'30 days	'
Percentage of awards applied to performance condition	'	50.00%	'	'
Percentage of awards applied to market condition	'	50.00%	'	'

ShareBased_Compensation_ShareB

Share-Based Compensation (Share-Based Compensation Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share based compensation expense	$3.20	$1.70	$10.20	$5.60
Tax benefit	-1.1	-0.6	-3.6	-2.1
After-tax expense	2.1	1.1	6.6	3.5
Stock Options [Member]	'	'	'	'
Share based compensation expense	0.8	0.3	2.7	1.4
Restricted Stock Units (RSUs) [Member]	'	'	'	'
Share based compensation expense	1.3	0.6	4.5	2.1
Performance Shares [Member]	'	'	'	'
Share based compensation expense	1.1	0.2	2.5	0.9
Deferred Compensation [Member]	'	'	'	'
Share based compensation expense	$0	$0.60	$0.50	$1.20

ShareBased_Compensation_Grants

Share-Based Compensation (Grants of Stock Options and RSUs) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Stock Options [Member]	'	'
Equity awards, granted, in shares	188,817	123,200
Weighted average fair value per award, in dollars per share	$19.54	$16.50
RSUs [Member]	'	'
Equity awards, granted, in shares	101,653	50,197
Weighted average fair value per award, in dollars per share	$54.29	$52.60

ShareBased_Compensation_Averag

Share-Based Compensation (Average Fair Value of Stock Options Granted, Assumptions) (Details)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation [Abstract]	'	'
Dividend yield	0.60%	1.60%
Volatility	36.55%	42.14%
Risk-free rate of return	1.94%	0.85%
Expected life, in years	'6 years 0 months 0 days	'5 years 1 month 0 days

Restructuring_Activities_Narra

Restructuring Activities (Narrative) (Details) (USD $)	9 Months Ended		3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014
			EMEIA 2014 Restructuring Plan [Member]	EMEIA 2014 Restructuring Plan [Member]	EMEIA 2014 Restructuring Plan [Member]	EMEIA 2014 Restructuring Plan [Member]	Other Restructuring [Member]
							EMEIA 2014 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'	'
Restructuring reserve, current	$1.90	$2.80	'	'	'	'	'
Restructuring charges	$5.40	'	$0.20	$0	$4.60	$0	$0.40

Restructuring_Activities_Sched

Restructuring Activities (Schedule of Restructuring Charges Recorded) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring charges	'	'	$5.40	'
EMEIA [Member]	'	'	'	'
Restructuring charges	'	'	5.4	'
EMEIA 2014 Restructuring Plan [Member]	'	'	'	'
Restructuring charges	0.2	0	4.6	0
EMEIA 2014 Restructuring Plan [Member] | EMEIA [Member]	'	'	'	'
Restructuring charges	0.2	0	4.6	0
EMEIA 2014 Restructuring Plan [Member] | Cost of Goods Sold [Member]	'	'	'	'
Restructuring charges	0.1	0	1.1	0
EMEIA 2014 Restructuring Plan [Member] | Selling and Administrative Expenses [Member]	'	'	'	'
Restructuring charges	0.1	0	3.5	0
Other Restructuring Plans [Member]	'	'	'	'
Restructuring charges	0	0	0.8	4.6
Other Restructuring Plans [Member] | Americas [Member]	'	'	'	'
Restructuring charges	0	0	0	0.1
Other Restructuring Plans [Member] | EMEIA [Member]	'	'	'	'
Restructuring charges	0	0	0.8	4.5
Other Restructuring Plans [Member] | Cost of Goods Sold [Member]	'	'	'	'
Restructuring charges	0	0	0.2	2.3
Other Restructuring Plans [Member] | Selling and Administrative Expenses [Member]	'	'	'	'
Restructuring charges	$0	$0	$0.60	$2.30

Restructuring_Activities_Sched1

Restructuring Activities (Schedule of Changes in Restructuring Reserve) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Restructuring Reserve [Roll Forward]	'
31-Dec-13	$2.80
Additions	5.4
Cash and non-cash uses	6.3
30-Sep-14	1.9
EMEIA [Member]	'
Restructuring Reserve [Roll Forward]	'
31-Dec-13	2.8
Additions	5.4
Cash and non-cash uses	6.3
30-Sep-14	$1.90

Other_Net_Details

Other, Net (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2012
Other Net [Abstract]	'	'	'	'	'
Interest income	($0.10)	$0	($0.40)	($0.10)	'
Exchange gain (loss)	-1.7	0	-2.3	6.9	'
Other	-0.2	0.2	-0.4	0.1	'
Other, net	-2	0.2	-3.1	6.9	'
Foreign currency translation loss related to the devaluation of the Venezuelan Bolivar	'	'	'	$6.20	'
Bolivars to U.S. dollar exchange rate	'	6.3	'	6.3	4.3

Income_Taxes_Details

Income Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Effective income tax rate (percent)	28.70%	-205.90%	29.30%	73.20%

Earnings_Per_Share_EPS_Details

Earnings Per Share (EPS) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Earnings Per Share [Abstract]	'	'	'	'	'
Distributed shares	'	'	'	'	96
Weighted-average number of basic shares	95.9	96	96.2	96	'
Shares issuable under incentive stock plans	1	0	1.1	0	'
Weighted average number of diluted shares	96.9	96	97.3	96	'

Business_Segment_Information_N

Business Segment Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2014
	segment
Segment Reporting [Abstract]	'
Number of reportable segments	3

Business_Segment_Information_S

Business Segment Information (Summary of Operations by Reportable Segments) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Goodwill, Impairment Loss	$0	($137.60)	$0	($137.60)
Net revenues	546.7	529	1,544.80	1,525.90
Segment operating income	122.7	125	308.8	310.4
Operating income (loss)	105.6	-21.4	262.7	148.1
Interest expense	12.7	0.5	38.3	1.4
Other (gain) loss, net	2	-0.2	3.1	-6.9
Earnings (loss) before income taxes	94.9	-22.1	227.5	139.8
Gain (Loss) on Disposition of Property Plant Equipment	'	'	0	21.3
Americas [Member]	'	'	'	'
Net revenues	423.1	405	1,169.20	1,154.10
Segment operating income	122.8	109.5	320.1	302.8
EMEIA [Member]	'	'	'	'
Goodwill, Impairment Loss	0	-137.6	0	-137.6
Net revenues	89.5	92.1	289.9	286
Segment operating income	0.4	-5.1	-4.3	-11.1
Asia Pacific [Member]	'	'	'	'
Net revenues	34.1	31.9	85.7	85.8
Segment operating income	-0.5	20.6	-7	18.7
Gain (Loss) on Disposition of Property Plant Equipment	'	'	'	21.5
Unallocated Amount to Segment [Member]	'	'	'	'
Unallocated corporate expense	($17.10)	($8.80)	($46.10)	($24.70)

Commitments_and_Contingencies_1

Commitments and Contingencies (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Expense for environmental remediation	$0.60	$0.50	'
Reserves for environmental matters	9.9	'	10.8
Reserves for environmental matters, current	3.6	'	4.2
Segment, Discontinued Operations [Member]	'	'	'
Reserves for environmental matters	$2.90	'	$2.90

Commitments_and_Contingencies_2

Commitments and Contingencies (Product Warranty Liability) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]	'	'
Balance at beginning of period	$9.70	$9.50
Reductions for payments	-5	-4.4
Accruals for warranties issued during the current period	5	3.4
Changes to accruals related to preexisting warranties	0.5	0.3
Translation	-0.2	0
Balance at end of period	$10	$8.80

Guarantor_Financial_Informatio2

Guarantor Financial Information (Statement of Comprehensive Income) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net revenues	$546.70	$529	$1,544.80	$1,525.90
Cost of goods sold	310.6	290.6	890.6	883
Selling and administrative expenses	130.5	122.2	391.5	357.2
Goodwill impairment charge	0	137.6	0	137.6
Operating income (loss)	105.6	-21.4	262.7	148.1
Equity earnings (loss) in affiliates, net of tax	0	0	0	0
Interest expense	12.7	0.5	38.3	1.4
Intercompany interest and fees	0	'	0	'
Other (gain) loss, net	-2	0.2	-3.1	6.9
Earnings (loss) before income taxes	94.9	-22.1	227.5	139.8
Provision (benefit) for income taxes	27.2	45.5	66.6	102.4
Earnings (loss) from continuing operations	67.7	-67.6	160.9	37.4
Discontinued operations, net of tax	-2.1	-0.4	-10.9	-1.9
Net earnings (loss)	65.6	-68	150	35.5
Less: Net earnings attributable to noncontrolling interests	5.3	10.1	10.6	13.9
Net earnings (loss) attributable to Allegion plc	60.3	-78.1	139.4	21.6
Total comprehensive income (loss)	40.5	-107.2	116.6	-12.3
Less: Total comprehensive income attributable to noncontrolling interests	5.7	10.3	10.1	14.8
Total comprehensive income (loss) attributable to Allegion plc	34.8	-117.5	106.5	-27.1
Other Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net revenues	222.6	219.4	637.9	649.5
Cost of goods sold	147.6	138.2	435.2	455.8
Selling and administrative expenses	52	66.1	167.2	196.6
Goodwill impairment charge	'	137.6	'	137.6
Operating income (loss)	23	-122.5	35.5	-140.5
Equity earnings (loss) in affiliates, net of tax	100.1	62.4	286.7	180.2
Interest expense	0	0.5	0.9	1.3
Intercompany interest and fees	62.7	'	189	'
Other (gain) loss, net	-1.8	-0.9	-3	6.5
Earnings (loss) before income taxes	62.2	-59.7	135.3	31.9
Provision (benefit) for income taxes	-42.1	8	-75.9	-5.7
Earnings (loss) from continuing operations	104.3	-67.7	211.2	37.6
Discontinued operations, net of tax	-2.1	-0.3	-10.9	-2.1
Net earnings (loss)	102.2	-68	200.3	35.5
Less: Net earnings attributable to noncontrolling interests	5.3	10.1	10.6	13.9
Net earnings (loss) attributable to Allegion plc	96.9	-78.1	189.7	21.6
Total comprehensive income (loss)	97.2	-78.1	199.8	21.5
Less: Total comprehensive income attributable to noncontrolling interests	5.7	10.3	10.1	14.8
Total comprehensive income (loss) attributable to Allegion plc	91.5	-88.4	189.7	6.7
Consolidation, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net revenues	-51.4	-54.2	-147.3	-157.2
Cost of goods sold	-51.4	-54.2	-147.3	-157.2
Selling and administrative expenses	0	0	0	0
Goodwill impairment charge	'	0	'	0
Operating income (loss)	0	0	0	0
Equity earnings (loss) in affiliates, net of tax	-246.8	26.9	-592	-329.2
Interest expense	0	0	0	0
Intercompany interest and fees	0	'	0	'
Other (gain) loss, net	0	0	0	0
Earnings (loss) before income taxes	-246.8	26.9	-592	-329.2
Provision (benefit) for income taxes	0	0	0	0
Earnings (loss) from continuing operations	-246.8	26.9	-592	-329.2
Discontinued operations, net of tax	0	0	0	0
Net earnings (loss)	-246.8	26.9	-592	-329.2
Less: Net earnings attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Allegion plc	-246.8	26.9	-592	-329.2
Total comprehensive income (loss)	-246.8	26.9	-592	-329.2
Less: Total comprehensive income attributable to noncontrolling interests	0	0	0	0
Total comprehensive income (loss) attributable to Allegion plc	-246.8	26.9	-592	-329.2
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net revenues	0	0	0	0
Cost of goods sold	0	0	0	0
Selling and administrative expenses	1.4	0	3.4	0
Goodwill impairment charge	'	0	'	0
Operating income (loss)	-1.4	0	-3.4	0
Equity earnings (loss) in affiliates, net of tax	62.3	-78.2	142.8	21.5
Interest expense	0	0	0	0
Intercompany interest and fees	0	'	0	'
Other (gain) loss, net	0	0	0	0
Earnings (loss) before income taxes	60.9	-78.2	139.4	21.5
Provision (benefit) for income taxes	0.3	0	0	0
Earnings (loss) from continuing operations	60.6	-78.2	139.4	21.5
Discontinued operations, net of tax	0	0	0	0
Net earnings (loss)	60.6	-78.2	139.4	21.5
Less: Net earnings attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Allegion plc	60.6	-78.2	139.4	21.5
Total comprehensive income (loss)	40.5	-107.3	106.5	-12.3
Less: Total comprehensive income attributable to noncontrolling interests	0	0	0	0
Total comprehensive income (loss) attributable to Allegion plc	40.5	-107.3	106.5	-12.3
Subsidiary Issuer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net revenues	0	0	0	0
Cost of goods sold	0	0	0	0
Selling and administrative expenses	0	0	0	0
Goodwill impairment charge	'	0	'	0
Operating income (loss)	0	0	0	0
Equity earnings (loss) in affiliates, net of tax	80.6	-11.8	156.3	125.3
Interest expense	12.7	0	37.4	0
Intercompany interest and fees	12.7	'	37.6	'
Other (gain) loss, net	0	0	0	0
Earnings (loss) before income taxes	55.2	-11.8	81.3	125.3
Provision (benefit) for income taxes	9.5	0	-28.1	0
Earnings (loss) from continuing operations	45.7	-11.8	109.4	125.3
Discontinued operations, net of tax	0	0	0	0
Net earnings (loss)	45.7	-11.8	109.4	125.3
Less: Net earnings attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Allegion plc	45.7	-11.8	109.4	125.3
Total comprehensive income (loss)	45.7	-11.8	109.4	125.3
Less: Total comprehensive income attributable to noncontrolling interests	0	0	0	0
Total comprehensive income (loss) attributable to Allegion plc	45.7	-11.8	109.4	125.3
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net revenues	375.5	363.8	1,054.20	1,033.60
Cost of goods sold	214.4	206.6	602.7	584.4
Selling and administrative expenses	77.1	56.1	220.9	160.6
Goodwill impairment charge	'	0	'	0
Operating income (loss)	84	101.1	230.6	288.6
Equity earnings (loss) in affiliates, net of tax	3.8	0.7	6.2	2.2
Interest expense	0	0	0	0.1
Intercompany interest and fees	-75.4	'	-226.6	'
Other (gain) loss, net	-0.2	1.1	-0.1	0.4
Earnings (loss) before income taxes	163.4	100.7	463.5	290.3
Provision (benefit) for income taxes	59.5	37.5	170.6	108.1
Earnings (loss) from continuing operations	103.9	63.2	292.9	182.2
Discontinued operations, net of tax	0	-0.1	0	0.2
Net earnings (loss)	103.9	63.1	292.9	182.4
Less: Net earnings attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Allegion plc	103.9	63.1	292.9	182.4
Total comprehensive income (loss)	103.9	63.1	292.9	182.4
Less: Total comprehensive income attributable to noncontrolling interests	0	0	0	0
Total comprehensive income (loss) attributable to Allegion plc	$103.90	$63.10	$292.90	$182.40

Guarantor_Financial_Informatio3

Guarantor Financial Information (Balance Sheet) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'	'	'	'
Cash and cash equivalents	$251.40	$227.40	$368.50	$317.50
Restricted Cash and Cash Equivalents	'	40.2	'	'
Accounts and notes receivable, net	287.3	260	'	'
Inventories	180.7	153.6	'	'
Other current assets	214.6	233.6	'	'
Assets held for sale	0	11.2	'	'
Accounts and notes receivable affiliates	0	0	'	'
Total current assets	934	926	'	'
Investment in affiliates	0	0	'	'
Property, plant and equipment, net	212.5	200.2	'	'
Intangible assets, net	643	651	'	'
Due from Affiliate, Noncurrent	0	0	'	'
Other noncurrent assets	202.7	202.7	'	'
Total assets	1,992.20	1,979.90	'	'
Current liabilities:	'	'	'	'
Accounts payable and accruals	433.9	418.6	'	'
Short-term borrowings and current maturities of long-term debt	30.3	71.9	'	'
Accounts and note payable affiliates	0	0	'	'
Total current liabilities	464.2	490.5	'	'
Long-term debt	1,249.20	1,272	'	'
Note payable affiliate	0	0	'	'
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	0	0	'	'
Other noncurrent liabilities	272.8	273.1	'	'
Total liabilities	1,986.20	2,035.60	'	'
Equity:	'	'	'	'
Stockholders' Equity Attributable to Parent	-30.7	-86.8	'	'
Noncontrolling interests	36.7	31.1	'	'
Total equity (deficit)	6	-55.7	1,301	1,366.20
Total liabilities and equity	1,992.20	1,979.90	'	'
Parent Company [Member]	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	1.2	1.4	0	0
Restricted Cash and Cash Equivalents	'	0	'	'
Accounts and notes receivable, net	0	0	'	'
Inventories	0	0	'	'
Other current assets	0.2	0.1	'	'
Assets held for sale	'	0	'	'
Accounts and notes receivable affiliates	0	0.4	'	'
Total current assets	1.4	1.9	'	'
Investment in affiliates	0	0	'	'
Property, plant and equipment, net	0	0	'	'
Intangible assets, net	0	0	'	'
Due from Affiliate, Noncurrent	0	0	'	'
Other noncurrent assets	0	0	'	'
Total assets	1.4	1.9	'	'
Current liabilities:	'	'	'	'
Accounts payable and accruals	1.2	1.3	'	'
Short-term borrowings and current maturities of long-term debt	0	0	'	'
Accounts and note payable affiliates	0.1	0.2	'	'
Total current liabilities	1.3	1.5	'	'
Long-term debt	0	0	'	'
Note payable affiliate	0	0	'	'
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	30.9	87.2	'	'
Other noncurrent liabilities	-0.1	0	'	'
Total liabilities	32.1	88.7	'	'
Equity:	'	'	'	'
Stockholders' Equity Attributable to Parent	-30.7	-86.8	'	'
Noncontrolling interests	0	0	'	'
Total equity (deficit)	-30.7	-86.8	'	'
Total liabilities and equity	1.4	1.9	'	'
Subsidiary Issuer [Member]	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	0	0	0	0
Restricted Cash and Cash Equivalents	'	0	'	'
Accounts and notes receivable, net	0	0	'	'
Inventories	0	0	'	'
Other current assets	28.1	0	'	'
Assets held for sale	'	0	'	'
Accounts and notes receivable affiliates	1,289	24.7	'	'
Total current assets	1,317.10	24.7	'	'
Investment in affiliates	1,435.90	1,236.10	'	'
Property, plant and equipment, net	0	0	'	'
Intangible assets, net	0	0	'	'
Due from Affiliate, Noncurrent	0	1,191.90	'	'
Other noncurrent assets	88.4	93.3	'	'
Total assets	2,841.40	2,546	'	'
Current liabilities:	'	'	'	'
Accounts payable and accruals	21.9	14	'	'
Short-term borrowings and current maturities of long-term debt	30	30	'	'
Accounts and note payable affiliates	186.5	23.3	'	'
Total current liabilities	238.4	67.3	'	'
Long-term debt	1,247.50	1,270	'	'
Note payable affiliate	1,810.90	1,810.90	'	'
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	0	0	'	'
Other noncurrent liabilities	104	58.5	'	'
Total liabilities	3,400.80	3,206.70	'	'
Equity:	'	'	'	'
Stockholders' Equity Attributable to Parent	-559.4	-660.7	'	'
Noncontrolling interests	0	0	'	'
Total equity (deficit)	-559.4	-660.7	'	'
Total liabilities and equity	2,841.40	2,546	'	'
Guarantor Subsidiaries [Member]	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	119.1	78.8	13.8	1.8
Restricted Cash and Cash Equivalents	'	0	'	'
Accounts and notes receivable, net	133.5	110.2	'	'
Inventories	69.6	64.3	'	'
Other current assets	23.3	31.5	'	'
Assets held for sale	'	0	'	'
Accounts and notes receivable affiliates	3,140.70	75.1	'	'
Total current assets	3,486.20	359.9	'	'
Investment in affiliates	88.7	84.9	'	'
Property, plant and equipment, net	147.1	130.9	'	'
Intangible assets, net	161.1	161.2	'	'
Due from Affiliate, Noncurrent	1,049	3,726.40	'	'
Other noncurrent assets	76	72.3	'	'
Total assets	5,008.10	4,535.60	'	'
Current liabilities:	'	'	'	'
Accounts payable and accruals	329	175.6	'	'
Short-term borrowings and current maturities of long-term debt	0.1	0.1	'	'
Accounts and note payable affiliates	247.2	189.6	'	'
Total current liabilities	576.3	365.3	'	'
Long-term debt	0.1	0.2	'	'
Note payable affiliate	0	0	'	'
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	0	0	'	'
Other noncurrent liabilities	147.6	61.9	'	'
Total liabilities	724	427.4	'	'
Equity:	'	'	'	'
Stockholders' Equity Attributable to Parent	4,284.10	4,108.20	'	'
Noncontrolling interests	0	0	'	'
Total equity (deficit)	4,284.10	4,108.20	'	'
Total liabilities and equity	5,008.10	4,535.60	'	'
Other Subsidiaries [Member]	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	131.1	147.2	354.7	315.7
Restricted Cash and Cash Equivalents	'	40.2	'	'
Accounts and notes receivable, net	153.8	149.8	'	'
Inventories	111.1	89.3	'	'
Other current assets	163	202	'	'
Assets held for sale	'	11.2	'	'
Accounts and notes receivable affiliates	280	185.8	'	'
Total current assets	839	825.5	'	'
Investment in affiliates	4,510.20	4,023.20	'	'
Property, plant and equipment, net	65.4	69.3	'	'
Intangible assets, net	481.9	489.8	'	'
Due from Affiliate, Noncurrent	800	800	'	'
Other noncurrent assets	38.3	37.1	'	'
Total assets	6,734.80	6,244.90	'	'
Current liabilities:	'	'	'	'
Accounts payable and accruals	81.8	227.7	'	'
Short-term borrowings and current maturities of long-term debt	0.2	41.8	'	'
Accounts and note payable affiliates	4,275.90	72.9	'	'
Total current liabilities	4,357.90	342.4	'	'
Long-term debt	1.6	1.8	'	'
Note payable affiliate	38	3,907.40	'	'
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	0	0	'	'
Other noncurrent liabilities	21.3	152.7	'	'
Total liabilities	4,418.80	4,404.30	'	'
Equity:	'	'	'	'
Stockholders' Equity Attributable to Parent	2,279.30	1,809.50	'	'
Noncontrolling interests	36.7	31.1	'	'
Total equity (deficit)	2,316	1,840.60	'	'
Total liabilities and equity	6,734.80	6,244.90	'	'
Consolidation, Eliminations [Member]	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	0	0	0	0
Restricted Cash and Cash Equivalents	'	0	'	'
Accounts and notes receivable, net	0	0	'	'
Inventories	0	0	'	'
Other current assets	0	0	'	'
Assets held for sale	'	0	'	'
Accounts and notes receivable affiliates	-4,709.70	-286	'	'
Total current assets	-4,709.70	-286	'	'
Investment in affiliates	-6,034.80	-5,344.20	'	'
Property, plant and equipment, net	0	0	'	'
Intangible assets, net	0	0	'	'
Due from Affiliate, Noncurrent	-1,849	-5,718.30	'	'
Other noncurrent assets	0	0	'	'
Total assets	-12,593.50	-11,348.50	'	'
Current liabilities:	'	'	'	'
Accounts payable and accruals	0	0	'	'
Short-term borrowings and current maturities of long-term debt	0	0	'	'
Accounts and note payable affiliates	-4,709.70	-286	'	'
Total current liabilities	-4,709.70	-286	'	'
Long-term debt	0	0	'	'
Note payable affiliate	-1,848.90	-5,718.30	'	'
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	-30.9	-87.2	'	'
Other noncurrent liabilities	0	0	'	'
Total liabilities	-6,589.50	-6,091.50	'	'
Equity:	'	'	'	'
Stockholders' Equity Attributable to Parent	-6,004	-5,257	'	'
Noncontrolling interests	0	0	'	'
Total equity (deficit)	-6,004	-5,257	'	'
Total liabilities and equity	($12,593.50)	($11,348.50)	'	'

Guarantor_Financial_Informatio4

Guarantor Financial Information (Statement of Cash Flow) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Condensed Cash Flow Statements, Captions [Line Items]	'	'
Other investing activities, net	$41.90	$24.40
Net cash provided by (used in) continuing operating activities	174.8	156.7
Net cash provided by (used in) discontinued operating activities	-2.8	0.9
Net cash provided by operating activities	172	157.6
Cash flows from investing activities:	'	'
Capital expenditures	-39.8	-12
Acquisition of businesses, net of cash acquired	-23	0
Proceeds from sale of property, plant and equipment	'	24.4
Net cash provided by (used in) investing activities	-20.9	12.4
Cash flows from financing activities:	'	'
Net debt repayments	-63.1	-0.2
Net inter-company proceeds (payments)	0	'
Repurchase of ordinary shares	-50.3	0
Net transfers to former Parent and affiliates	0	-118.5
Other financing activities, net	15.4	-5.2
Net cash used in continuing financing activities	-120.6	-123.9
Effect of exchange rate changes on cash and cash equivalents	-6.5	4.9
Net increase in cash and cash equivalents	24	51
Cash and cash equivalents - beginning of period	227.4	317.5
Cash and cash equivalents - end of period	251.4	368.5
Dividends paid to ordinary shareholders	22.6	0
Parent Company [Member]	'	'
Condensed Cash Flow Statements, Captions [Line Items]	'	'
Other investing activities, net	0	'
Net cash provided by (used in) continuing operating activities	56.2	0
Net cash provided by (used in) discontinued operating activities	0	0
Net cash provided by operating activities	56.2	0
Cash flows from investing activities:	'	'
Capital expenditures	0	0
Acquisition of businesses, net of cash acquired	0	'
Proceeds from sale of property, plant and equipment	'	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:	'	'
Net debt repayments	0	0
Net inter-company proceeds (payments)	0	'
Repurchase of ordinary shares	-50.3	'
Net transfers to former Parent and affiliates	'	0
Other financing activities, net	16.5	0
Net cash used in continuing financing activities	-56.4	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	-0.2	0
Cash and cash equivalents - beginning of period	1.4	0
Cash and cash equivalents - end of period	1.2	0
Dividends paid to ordinary shareholders	22.6	'
Subsidiary Issuer [Member]	'	'
Condensed Cash Flow Statements, Captions [Line Items]	'	'
Other investing activities, net	0	'
Net cash provided by (used in) continuing operating activities	-13.2	0
Net cash provided by (used in) discontinued operating activities	0	0
Net cash provided by operating activities	-13.2	0
Cash flows from investing activities:	'	'
Capital expenditures	0	0
Acquisition of businesses, net of cash acquired	0	'
Proceeds from sale of property, plant and equipment	'	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:	'	'
Net debt repayments	-22.5	0
Net inter-company proceeds (payments)	35.7	'
Repurchase of ordinary shares	0	'
Net transfers to former Parent and affiliates	'	0
Other financing activities, net	0	0
Net cash used in continuing financing activities	13.2	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents - beginning of period	0	0
Cash and cash equivalents - end of period	0	0
Dividends paid to ordinary shareholders	0	'
Guarantor Subsidiaries [Member]	'	'
Condensed Cash Flow Statements, Captions [Line Items]	'	'
Other investing activities, net	0.6	'
Net cash provided by (used in) continuing operating activities	81.9	180.7
Net cash provided by (used in) discontinued operating activities	0	0.2
Net cash provided by operating activities	81.9	180.9
Cash flows from investing activities:	'	'
Capital expenditures	-32.9	-7.2
Acquisition of businesses, net of cash acquired	0	'
Proceeds from sale of property, plant and equipment	'	0.7
Net cash provided by (used in) investing activities	-32.3	-6.5
Cash flows from financing activities:	'	'
Net debt repayments	0	0
Net inter-company proceeds (payments)	14.4	'
Repurchase of ordinary shares	0	'
Net transfers to former Parent and affiliates	'	-162.4
Other financing activities, net	0	0
Net cash used in continuing financing activities	-9.3	-162.4
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	40.3	12
Cash and cash equivalents - beginning of period	78.8	1.8
Cash and cash equivalents - end of period	119.1	13.8
Dividends paid to ordinary shareholders	23.7	'
Other Subsidiaries [Member]	'	'
Condensed Cash Flow Statements, Captions [Line Items]	'	'
Other investing activities, net	41.3	'
Net cash provided by (used in) continuing operating activities	135.1	-24
Net cash provided by (used in) discontinued operating activities	-2.8	0.7
Net cash provided by operating activities	132.3	-23.3
Cash flows from investing activities:	'	'
Capital expenditures	-6.9	-4.8
Acquisition of businesses, net of cash acquired	-23	'
Proceeds from sale of property, plant and equipment	'	23.7
Net cash provided by (used in) investing activities	11.4	18.9
Cash flows from financing activities:	'	'
Net debt repayments	-40.6	-0.2
Net inter-company proceeds (payments)	-50.1	'
Repurchase of ordinary shares	0	'
Net transfers to former Parent and affiliates	'	43.9
Other financing activities, net	-1.1	-5.2
Net cash used in continuing financing activities	-153.3	38.5
Effect of exchange rate changes on cash and cash equivalents	-6.5	4.9
Net increase in cash and cash equivalents	-16.1	39
Cash and cash equivalents - beginning of period	147.2	315.7
Cash and cash equivalents - end of period	131.1	354.7
Dividends paid to ordinary shareholders	61.5	'
Consolidation, Eliminations [Member]	'	'
Condensed Cash Flow Statements, Captions [Line Items]	'	'
Other investing activities, net	0	'
Net cash provided by (used in) continuing operating activities	-85.2	0
Net cash provided by (used in) discontinued operating activities	0	0
Net cash provided by operating activities	-85.2	0
Cash flows from investing activities:	'	'
Capital expenditures	0	0
Acquisition of businesses, net of cash acquired	0	'
Proceeds from sale of property, plant and equipment	'	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:	'	'
Net debt repayments	0	0
Net inter-company proceeds (payments)	0	'
Repurchase of ordinary shares	0	'
Net transfers to former Parent and affiliates	'	0
Other financing activities, net	0	0
Net cash used in continuing financing activities	85.2	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents - beginning of period	0	0
Cash and cash equivalents - end of period	0	0
Dividends paid to ordinary shareholders	($85.20)	'

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2014
					Subsequent Event [Member]
Subsequent Event [Line Items]	'	'	'	'	'
Debt Issuance Cost	'	'	'	'	$4.50
Dividends declared per ordinary share (in dollars per share)	$0.08	$0	$0.24	$0	'

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Discontinued operations, net of tax	($2.10)	($0.40)	($10.90)	($1.90)
EMEIA Divestiture UK Door [Member]	'	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Disposal Group, Including Discontinued Operation, Revenue	4.3	6.3	16.1	17
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	-0.3	-0.5	-2	-1.6
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	1	0	7.6	0
Discontinued operations, net of tax	-1.3	-0.5	-9.6	-1.6
Other Divestitures [Member]	'	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Discontinued operations, net of tax	($0.80)	$0.10	($1.30)	($0.30)