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Stockholders' Equity - Other Comprehensive Income (Loss) Of Equity Investees (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Pretax Amount |  |  |
Pensions and other postretirement benefits | $ 161 | $ (123) |
Other comprehensive income (loss), before tax | 250 | (138) | $ 97
Tax (Expense) Benefit |  |  |
Other comprehensive income (loss) | (58) | 35 | (25)
Net-of-Tax Amount |  |  |
Reclassification Adjustments | 31 | 20 |
Other comprehensive income (loss), net of tax | 192 | (103) | 72
Pensions And Other Postretirement Liabilities |  |  |
Pretax Amount |  |  |
Pensions and other postretirement benefits | 185 | (167) | 81
Reclassification adjustments for costs | 41 | 27 | 20
Other comprehensive income (loss), before tax | 226 | (140) | 101
Tax (Expense) Benefit |  |  |
Pensions and other postretirement benefits | (46) | 42 | (20)
Reclassification from AOCI, Current Period, Tax | (10) | (7) | (5)
Other comprehensive income (loss) | (56) | 35 | (25)
Net-of-Tax Amount |  |  |
Pensions and other postretirement benefits | 139 | (125) | 61
Reclassification Adjustments | 31 | 20 | 15
Other comprehensive income (loss), net of tax | 170 | (105) | 76
Other comprehensive income of equity investees |  |  |
Pretax Amount |  |  |
Pensions and other postretirement benefits | 22 | 2 |
Other comprehensive income (loss), before tax | 24 | 2 | (4)
Tax (Expense) Benefit |  |  |
Other comprehensive income (loss) | (2) | 0 | 0
Net-of-Tax Amount |  |  |
Reclassification Adjustments | 0 | 0 |
Other comprehensive income (loss), net of tax | $ 22 | $ 2 | $ (4)

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