Retirement Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit), Before Tax						$ (0.3)
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)						(0.2)
Defined Benefit Plan, Amortization of Net Gains (Losses), Before Tax						2.8
Defined Benefit Plan, Amortization of Net Gains (Losses)						1.8
Defined Contribution Plan, Cost Recognized						$ 23.5	$ 21.6	$ 24.4
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	$ (0.1)	$ (2.6)	$ (0.4)	$ (1.2)	$ (1.2)
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.00%		4.40%	4.00%	4.30%	4.00%		4.40%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate						4.00%	3.65%	4.40%
Settlements						$ (1.3)	$ (2.6)	$ (1.6)
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year						0.0
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Settlements						0.0	$ (5.9)	$ 0.0
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year						$ 3.4