DEBT AND EQUITY SECURITIES - Schedule of Net Gains and Interest Income from Marketable Securities Held to Fund Operating Programs (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Unrealized gains (losses), net | ||||
| Net gains (losses) and interest income from marketable securities held to fund rabbi trusts | $ (5) | $ (10) | $ 19 | $ 21 |
| Revenues for reimbursed costs | (3) | (4) | 8 | 11 |
| Other income (loss), net (Note 19) | 6 | (5) | 7 | 0 |
| Other comprehensive income (loss) (Note 14) | 15 | 0 | 9 | 0 |
| Realized gains (losses), net | ||||
| Net gains (losses) and interest income from marketable securities held to fund rabbi trusts | 23 | 1 | 27 | 5 |
| Revenues for reimbursed costs | 11 | 1 | 13 | 3 |
| Other income (loss), net (Note 19) | $ 0 | $ (1) | $ 0 | $ (1) |