Accumulated Other Comprehensive Loss - AOCI Activity in Equity (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ (11.8)	$ 782.1
Other comprehensive income (loss) before reclassifications	13.5	(27.5)
Amounts reclassified from AOCI	35.6	5.8
Other comprehensive income	49.1	(21.7)
Balance	(31.4)	(254.5)
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(98.8)	(54.6)
Other comprehensive income (loss) before reclassifications	27.8	(35.6)
Amounts reclassified from AOCI	0.0	0.0
Other comprehensive income	27.8	(35.6)
Balance	(71.0)	(90.2)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(32.8)	(24.3)
Other comprehensive income (loss) before reclassifications	(14.3)	8.1
Amounts reclassified from AOCI	35.6	5.8
Other comprehensive income	21.3	13.9
Balance	(11.5)	(10.4)
AOCI Including Portion Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(131.6)	(78.9)
Balance	(82.5)	(100.6)
AOCI Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(0.2)	(0.7)
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(131.0)	(78.2)
Balance	$ (82.3)	$ (99.9)