Derivative Financial Instruments Derivative Financial Instruments (Fair Value Hedges, Financial Position) (Details) - Long-term Debt [Member] - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Amount of Hedged Item	$ 22,349	$ 21,157
Cumulative basis adjustments for fair value hedges	$ (57)	$ 18

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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