Fair Value Measurements - Reconciliation of Changes in Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Reconciliation of changes in the fair value of financial assets and liabilities classified as Level 3 in the fair value hierarchy
Balance at beginning of period	$ 92	$ 146
Total gain (loss) included in earnings	(16)	126
Settlement (gain) loss	(62)	(184)
Transfers in and/or out of Level 3	0	0
Balance at end of period	14	88
Change in unrealized gains (losses) relating to assets and liabilities still held at the end of the period	$ (26)	$ 42
Fair value recurring basis unobservable input reconciliation net derivative asset liability gain loss statement of income extensible list not disclosed flag	Total gain (loss) included in earnings	Total gain (loss) included in earnings