Fair Value Measurements - Difference between fair values fair value option (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Outstanding Principal Amount	$ 27,179	$ 30,163
Fair Value Option
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Fair Value	56	1,871
Outstanding Principal Amount	45	1,405
Difference	$ 11	$ 466

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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