Tax Matters - Deferred Taxes - Footnotes (Details) - USD ($) $ in Millions |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|||||||
| Income Tax Examination [Line Items] | ||||||||
| Reduction for unrecognized tax benefit | $ 636 | $ 575 | ||||||
| Net deferred tax asset | [1],[2],[3] | 5,033 | 4,451 | |||||
| Indefinite-lived and definite-lived | 9,900 | 11,300 | ||||||
| Noncurrent Deferred Tax Assets and Other Noncurrent Tax Assets [Member] | ||||||||
| Income Tax Examination [Line Items] | ||||||||
| Net deferred tax asset | 7,400 | 6,600 | ||||||
| Noncurrent Deferred Tax Liabilities [Member] | ||||||||
| Income Tax Examination [Line Items] | ||||||||
| Net deferred tax liability | $ 2,400 | $ 2,100 | ||||||
| ||||||||