Financial Instruments, Risk Management and Fair Value Measurements - Derivatives Gain (Loss) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivatives Designated as Hedging Instruments
Unrealized hedging gains (losses) and other, net of tax		$ 8.1	$ 41.6	$ (36.4)	$ 34.1
Reclassification of deferred hedging (gains) losses, net of tax	[1]	12.0	0.6	20.4	11.8
Total derivative instrument impact on comprehensive income, net of tax		$ 20.1	$ 42.2	$ (16.0)	$ 45.9
Derivatives Not Designated as Hedging Instruments
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Costs of sales and services	Costs of sales and services	Costs of sales and services	Costs of sales and services
Designated as Cash Flow Hedges
Derivatives Designated as Hedging Instruments
Unrealized hedging gains (losses) and other, net of tax		$ 8.1	$ 41.6	$ (36.4)	$ 34.1
Reclassification of deferred hedging (gains) losses, net of tax		12.0	0.6	20.4	11.8
Total derivative instrument impact on comprehensive income, net of tax		20.1	42.2	(16.0)	45.9
Designated as Cash Flow Hedges | Foreign exchange contracts
Derivatives Designated as Hedging Instruments
Unrealized hedging gains (losses) and other, net of tax		(3.2)	40.7	(58.7)	30.1
Reclassification of deferred hedging (gains) losses, net of tax		11.2	(0.2)	18.0	9.2
Total derivative instrument impact on comprehensive income, net of tax		8.0	40.5	(40.7)	39.3
Designated as Cash Flow Hedges | Interest rate contracts
Derivatives Designated as Hedging Instruments
Unrealized hedging gains (losses) and other, net of tax		11.3	0.9	22.3	4.0
Reclassification of deferred hedging (gains) losses, net of tax		0.8	0.8	2.4	2.6
Total derivative instrument impact on comprehensive income, net of tax		12.1	1.7	24.7	6.6
Not Designated as Hedging Instruments
Derivatives Not Designated as Hedging Instruments
Amount of pre-tax gain or (loss) recognized in income on derivatives		6.3	(0.2)	(28.8)	(27.9)
Not Designated as Hedging Instruments | Foreign exchange contracts
Derivatives Not Designated as Hedging Instruments
Amount of pre-tax gain or (loss) recognized in income on derivatives		$ 6.3	$ (0.2)	$ (28.8)	$ (27.9)

[1] For more detail on the components of these reclassifications and the affected line item in the condensed consolidated statements of income (loss) see Note 14.