Derivatives - Derivatives by Balance Sheet Location (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 1.2	$ 11.2
Liability Derivatives	31.1	11.3
Derivatives designated as cash flow hedge
Derivatives, Fair Value [Line Items]
Asset Derivatives	1.2	11.1
Liability Derivatives	31.1	11.3
Derivatives designated as cash flow hedge | Foreign Exchange Contract | Accounts receivable
Derivatives, Fair Value [Line Items]
Asset Derivatives	0.9	4.8
Derivatives designated as cash flow hedge | Foreign Exchange Contract | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	0.0	6.3
Derivatives designated as cash flow hedge | Foreign Exchange Contract | Accrued expenses
Derivatives, Fair Value [Line Items]
Liability Derivatives	11.0	5.6
Derivatives designated as cash flow hedge | Foreign Exchange Contract | Other liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	12.3	5.5
Derivatives designated as cash flow hedge | Interest rate contracts | Accounts receivable
Derivatives, Fair Value [Line Items]
Asset Derivatives	0.3	0.0
Derivatives designated as cash flow hedge | Interest rate contracts | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	0.0
Derivatives designated as cash flow hedge | Interest rate contracts | Accrued expenses
Derivatives, Fair Value [Line Items]
Liability Derivatives	0.0	0.2
Derivatives designated as cash flow hedge | Interest rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	7.8
Derivatives designated as investment hedge
Derivatives, Fair Value [Line Items]
Asset Derivatives	0.0	0.1
Liability Derivatives	0.0	0.0
Derivatives designated as investment hedge | Foreign Exchange Contract | Accounts receivable
Derivatives, Fair Value [Line Items]
Asset Derivatives	0.0	0.1
Derivatives designated as investment hedge | Foreign Exchange Contract | Accounts payable
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 0.0	$ 0.0