Equity - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,561.4	$ 3,210.4
Other comprehensive income (loss) before reclassifications	(6.1)	(1.2)
Amounts reclassified from accumulated other comprehensive income (loss)	(8.7)	(0.2)
Adoption of accounting standard		(53.1)
Net current period other comprehensive income (loss)	(14.8)	(1.4)
Ending balance	2,702.7	2,791.8
Discontinued Operations
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net current period other comprehensive income (loss)		39.0
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(412.0)	(308.9)
Ending balance	(426.8)	(324.4)
Foreign currency adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(77.7)	(101.5)
Other comprehensive income (loss) before reclassifications	(33.6)	(2.1)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0
Adoption of accounting standard		0.0
Net current period other comprehensive income (loss)	(33.6)	(2.1)
Ending balance	(111.3)	(64.6)
Foreign currency adjustments | Discontinued Operations
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net current period other comprehensive income (loss)		39.0
Derivative instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(65.0)	11.2
Other comprehensive income (loss) before reclassifications	27.5	0.9
Amounts reclassified from accumulated other comprehensive income (loss)	(10.3)	(3.6)
Adoption of accounting standard		1.0
Net current period other comprehensive income (loss)	17.2	(2.7)
Ending balance	(47.8)	9.5
Derivative instruments | Discontinued Operations
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net current period other comprehensive income (loss)		0.0
Pension and other postretirement benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(269.3)	(218.6)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	1.6	3.4
Adoption of accounting standard		(54.1)
Net current period other comprehensive income (loss)	1.6	3.4
Ending balance	$ (267.7)	(269.3)
Pension and other postretirement benefits | Discontinued Operations
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net current period other comprehensive income (loss)		$ 0.0