Financial Instruments - Cumulative Net Gains on Equity Securities Sold (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Total sale price	$ 315	$ 583	$ 1,068	$ 1,673
Total initial cost	272	303	864	964
Cumulative net gains (losses)	$ 43	$ 280	$ 204	$ 709

Proceeds From Sale Of Equity Securities, FV-NI, Held-for-investment

No definition available.

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Period Type:	duration