Special Charges - Schedule of Components of Special Charges (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Operating: | ||
| (Gains) losses on sale of assets and other special charges | $ 13 | $ 14 |
| Total operating special charges | 13 | 14 |
| Nonoperating: | ||
| Nonoperating unrealized (gains) losses on investments, net | 37 | (24) |
| Nonoperating debt extinguishment and modification fees | 35 | 0 |
| Total nonoperating special charges and unrealized (gains) losses on investments, net | 72 | (24) |
| Total operating and nonoperating special charges and unrealized (gains) losses on investments, net | 85 | (10) |
| Income tax benefit, net of valuation allowance | (11) | (3) |
| Total operating and nonoperating special charges and unrealized (gains) losses on investments, net of income taxes | $ 74 | $ (13) |