Derivative Instruments - Summary of the Effect of Derivatives Designated as Cash Flow Hedging Instruments (Details) - Foreign exchange contract - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Reclassified from AOCI into Operating Income (in millions)	$ (60.0)	$ 18.3	$ 118.6
Operating expense
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Reclassified from AOCI into Operating Income (in millions)	(0.8)	3.3	(3.3)
Cash flows, revenue | Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Recognized in Net Income (Amounts Excluded from Effectiveness Testing) (in millions)	(8.4)	(9.9)	2.9
Cash flows, operating expenses | Operating expense
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Recognized in Net Income (Amounts Excluded from Effectiveness Testing) (in millions)	$ 0.0	$ 0.0	$ 0.2