Financial Instruments: (Qualifying Hedging Activity Reported in Accumulated Other Comprehensive Earnings (Losses) Net of Income Taxes) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] | ||||
| Beginning balance | $ (7,300) | $ (8,926) | $ (8,028) | $ (9,870) |
| Ending balance | (6,657) | (10,012) | (6,657) | (10,012) |
| Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | ||||
| AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] | ||||
| Beginning balance | 346 | 324 | 284 | 467 |
| Derivative (gains)/losses transferred to earnings | (41) | (29) | (73) | (50) |
| Change in fair value | 41 | (113) | 135 | (235) |
| Ending balance | $ 346 | $ 182 | $ 346 | $ 182 |
| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|