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Stockholders' Equity Tax Benefit (Expense) on Net Activity (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Tax Benefit (Expense) | $ (2) | $ 38 |  | $ 67
Pension Plan |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Tax Benefit (Expense) | (3) | (3) | $ (5) | (5)
Other Benefit Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Tax Benefit (Expense) | 0 | 48 | 3 | 97
Derivative Instruments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Tax Benefit (Expense) | $ 1 | $ (7) | $ 0 | $ (25)

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