Restructuring and Other - Restructuring and Other Costs (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 Cost and Reserve [Line Items]
Restructuring and other	$ 36.3	$ 13.8	$ 4.2	$ 2.7	$ 2.9	$ 5.6	$ 5.2	$ 8.2	$ 57.0	$ 21.9	$ 30.7
Employee severance
Restructuring Cost and Reserve [Line Items]
Restructuring and other					$ 26.4				36.2	16.9	25.8
Management restructuring and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other									5.9	0.0	0.0
Restructuring, integration and other
Restructuring Cost and Reserve [Line Items]
Restructuring and other									$ 14.9	$ 5.0	$ 4.9