Debt (Receivables, Securitization Facility and Commercial Paper) (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Short-term Debt [Line Items]
Short-term borrowings	$ 655,400,000	$ 1,493,000,000
Commercial Paper [Member]
Short-term Debt [Line Items]
Short-term borrowings	328,500,000	1,173,400,000
Receivables Facility
Short-term Debt [Line Items]
Short-term borrowings	325,500,000	318,500,000
Other Current Portion of Long-term Debt
Short-term Debt [Line Items]
Short-term borrowings	1,400,000	$ 1,100,000
Receivables Facility | Revolving Credit Facility
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 400,000,000