Accumulated Other Comprehensive Income (Loss) - Change in the Components of AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Derivative Instruments Gain (Loss), Pretax	$ (1.0)	$ (11.2)	$ 4.4
Derivative Instruments Gain (Loss), Tax Effect	0.3	4.3	(1.2)
Derivative Instruments Gain (Loss), Net Amount	(0.7)	(6.9)	3.2
Currency Translation Adjustment, Pretax Amount	(37.2)	(34.7)	(13.9)
Currency Translation Adjustment, Tax Effect	0.0	0.7	0.3
Currency Translation Adjustment, Net Amount	(37.2)	(34.0)	(13.6)
Pension and Postretirement Benefit Plans, Pretax Amount	40.0	(165.8)	213.4
Pension and Postretirement Benefit Plans, Tax Effect	(13.2)	60.3	(79.9)
Pension and Postretirement Benefit Plans, Net Amount	26.8	(105.5)	133.5
Other Comprehensive Income (Loss), Pretax Amount	1.8	(211.7)	203.9
Other Comprehensive Income (Loss), Tax Effect	(12.9)	65.3	(80.8)
Net Current-period Other Comprehensive (Loss) Income	$ (11.1)	$ (146.4)	$ 123.1