Financing (Narrative) (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Debt discounts, premiums and debt issuance costs	$ 111,000,000	$ 118,000,000
Euro-denominated commercial paper | Commercial paper
Debt Instrument [Line Items]
Weighted average interest rate of long-term debt, interest rate	3.60%
Weighted average maturity of long-term debt, at point in time	47 days
Long-term debt | Revolving credit facility | Five-Year Facility
Debt Instrument [Line Items]
Line of credit	$ 5,000,000,000