Financial Instruments - Cumulative Basis Adjustments for Fair Value Hedges (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
||
|---|---|---|---|---|
| Fair Value Disclosures [Abstract] | ||||
| Hedged Liability, Statement of Financial Position [Extensible Enumeration] | Long-term debt | Long-term debt | ||
| Carrying Amount of Hedged Assets/Liabilities | [1] | $ 7,110 | $ 7,154 | |
| Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Active Hedging Relationships, Liability | (163) | (384) | ||
| Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Discontinued Hedging Relationships, Liability | $ 821 | $ 891 | ||
| ||||