Accumulated Other Comprehensive (Loss) Income, Accumulated Other Comprehensive (Loss) Income Balances (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018
Before-Tax Amount [Abstract]
Foreign currency translation adjustments, net	$ (8.6)	$ (58.1)	$ (4.1)		$ (28.5)
Unrecognized (losses) gains on cash flow hedges, net	(0.7)	6.2	0.6		21.3
Pension and other postretirement benefit prior service cost and gain or loss, net	1.3	3.3	1.5		2.1
Other comprehensive loss	(8.0)	(48.6)	(2.0)		(5.1)
Tax (Expense) or Benefit [Abstract]
Foreign currency translation adjustments, net	2.2	(9.4)	(2.4)		(4.6)
Unrecognized (losses) gains on cash flow hedges, net	0.2	(1.5)	0.8		(5.2)
Pension and other postretirement benefit prior service cost and gain or loss, net	(0.1)	(0.6)	(0.1)		1.0
Other comprehensive loss	2.3	(11.5)	(1.7)		(8.8)
Net of Tax Amount [Abstract]
Foreign currency translation adjustments, net	(6.4)	(67.5)	(6.5)		(33.1)
Unrecognized (losses) gains on cash flow hedges, net	(0.5)	4.7	1.4		16.1
Pension and other postretirement benefit prior service cost and gain or loss, net	1.2	2.7	1.4		3.1
Total other comprehensive loss, net of tax	$ (5.7)	$ (60.1)	$ (3.7)	[1]	$ (13.9)	[1]

[1] All amounts are net of tax. Amounts in parentheses indicate debits.