Derivative Instruments and Hedging Activities - Income and Comprehensive Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Not designated as hedging instruments
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	$ 1.1	$ 0.6	$ (4.3)	$ 0.7
Not designated as hedging instruments | Interest and other income (expense), net | Forward currency contract
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	1.1	0.3	(3.9)	(0.2)
Not designated as hedging instruments | Interest and other income (expense), net | Embedded derivatives in purchase and delivery contracts
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses		0.3	(0.4)	0.9
Not designated as hedging instruments | Net Investment Hedging | Accumulated other comprehensive income, net of tax
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	0.4	(17.4)	48.8	(7.3)
Not designated as hedging instruments | Net Investment Hedging | Accumulated other comprehensive income, net of tax | Accumulated other comprehensive income
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	(0.3)	(14.5)	38.2	14.6
Designated as hedging instrument | Cash Flow Hedging | Interest and other income (expense), net | Interest rate and cross currency swap agreements
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	(1.2)	(0.8)	(2.3)	(0.8)
Designated as hedging instrument | Cash Flow Hedging | Accumulated other comprehensive income, net of tax
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	0.7	(2.9)	10.6	(21.9)
Designated as hedging instrument | Cash Flow Hedging | Accumulated other comprehensive income, net of tax | Interest rate and cross currency swap agreements
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	0.7	(2.9)	10.6	(21.9)
Designated as hedging instrument | Net Investment Hedging
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	2.4	2.4	(1.6)	5.1
Designated as hedging instrument | Net Investment Hedging | Accumulated other comprehensive income | Interest rate and cross currency swap agreements
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	1.3	1.8	2.7	4.4
Designated as hedging instrument | Net Investment Hedging | Interest and other income (expense), net | Interest rate and cross currency swap agreements
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	2.5	2.6	5.0	5.2
Designated as hedging instrument | Net Investment Hedging | Accumulated other comprehensive income, net of tax | Interest rate and cross currency swap agreements
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	0.4	(8.3)	18.2	21.6
Designated as hedging instrument | Net Investment Hedging | Accumulated other comprehensive income, net of tax | Long-term debt
Derivative instruments and hedging activities
Impact on net income of unrealized gains and losses	$ (0.7)	$ (6.2)	$ 20.0	$ (7.0)