Share-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Share based compensation expense	$ 26.3	$ 23.0
Share based compensation expense, net of tax	16.2	14.2
Percentage Of Awards Applied To Performance Condition	50.00%
Percentage of Awards Applied to Market Condition	50.00%
Number Of Shares To Companys Maximum Award Level For Eligible Employees (in millions)	400,000
Stock options and Restricted Stock Units (RSUs) [Member]
Vesting period, in years	3 years
Stock Appreciation Rights (SARs) [Member]
Vesting period, in years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	71,067
Employee Stock Option [Member]
Share based compensation expense	$ 6.5	$ 7.9
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	372,259	527,923
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	1,150,982	1,318,418
Allegion [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures		56,547
Allegion [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures		139,649