Debt (Receivables, Securitization Facility and Commercial Paper) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Jun. 16, 2020
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,500,000,000
Receivables Facility
Short-term Debt [Line Items]
Accounts receivable securitization facility maximum borrowing capacity	$ 400,000,000
Note Securitization Facility [Member]
Short-term Debt [Line Items]
Accounts receivable securitization facility maximum borrowing capacity	$ 200,000,000
London Interbank Offered Rate (LIBOR) [Member] | Receivables Facility
Short-term Debt [Line Items]
Basis spread on variable rate	0.925%
London Interbank Offered Rate (LIBOR) [Member] | Note Securitization Facility [Member]
Short-term Debt [Line Items]
Basis spread on variable rate	1.00%
Commercial Paper [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,650,000,000
Debt Instrument, Redemption, Description	364