Debt (Schedule of Debt Activity) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Issuance of Notes and Debentures: | |||||||
| Issuance of notes and debentures | $ 0 | $ 7,598 | $ 3,473 | $ 2,956 | $ 14,027 | $ 19 | $ 10,004 |
| Repayment of long-term debt | 3,679 | 229 | 94 | 1,526 | 5,528 | $ 10,297 | $ 12,044 |
| Line of Credit | |||||||
| Issuance of Notes and Debentures: | |||||||
| Repayment of long-term debt | 133 | 229 | 62 | 205 | 629 | ||
| USD notes | |||||||
| Issuance of Notes and Debentures: | |||||||
| Issuance of notes and debentures | 0 | 4,959 | 3,473 | 0 | 8,432 | ||
| Repayment of long-term debt | 145 | 0 | 0 | 0 | 145 | ||
| Euro Member Countries, Euro | Foreign notes | |||||||
| Issuance of Notes and Debentures: | |||||||
| Issuance of notes and debentures | 0 | 2,639 | 0 | 2,956 | 5,595 | ||
| Repayment of long-term debt | 2,441 | 0 | 32 | 1,321 | 3,794 | ||
| Canada, Dollars | Foreign notes | |||||||
| Issuance of Notes and Debentures: | |||||||
| Repayment of long-term debt | $ 960 | $ 0 | $ 0 | $ 0 | $ 960 | ||