Derivative and Credit-Related Financial Instruments (Schedule of the Effects of Fair Value Hedging on the Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|||
| Effects of fair value hedging on the Consolidated Statements o Comprehensive Income [Line Items] | ||||||
| Total interest on medium- and long-term debt | [1] | $ 85 | $ 124 | $ 180 | $ 241 | |
| Swaps - fair value - receive fixed/pay floating | Risk management purposes | Interest rate swap | ||||||
| Effects of fair value hedging on the Consolidated Statements o Comprehensive Income [Line Items] | ||||||
| Hedged items | 70 | 87 | 151 | 168 | ||
| Derivatives designated as hedging instruments | $ 15 | $ 37 | $ 29 | $ 73 | ||
| ||||||