Restructuring and Other - Restructuring Reserve Rollforward (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Accrual additions	$ 36.3	$ 13.8	$ 4.2	$ 2.7	$ 2.9	$ 5.6	$ 5.2	$ 8.2	$ 57.0	$ 21.9	$ 30.7
November 2016 Plan
Restructuring Reserve [Roll Forward]
Beginning balance				$ 0.0					0.0
Accrual additions									22.4
Cash payments									(6.0)
Ending balance	$ 16.4				$ 0.0				$ 16.4	$ 0.0