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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Jun. 30, 2022
Equity [Abstract] |
Changes in Accumulated Other Comprehensive Loss by Component | The following table shows the changes in accumulated other comprehensive loss by component. Amounts in parentheses indicate debits.
(In millions) | Pension Benefits |  | Other Benefits |  | Other |  | Total
Balance as of December 31, 2020 | $ | (338) |  |  | $ | (181) |  |  | $ | 7 |  |  | $ | (512) |
Other comprehensive gain (loss) before reclassifications, net of tax of $44 | 132 |  |  | 1 |  |  | (4) |  |  | 129 |
Amounts reclassified from accumulated other comprehensive loss: |  |  |  |  |  |  |
Amortization of prior service cost (credit)(a) | (23) |  |  | 1 |  |  | — |  |  | (22) |
Amortization of actuarial loss(a) | 24 |  |  | 5 |  |  | — |  |  | 29 |
Settlement loss(a) | 49 |  |  | — |  |  | — |  |  | 49 |
Tax effect | (11) |  |  | (2) |  |  | — |  |  | (13) |
Other comprehensive income (loss) | 171 |  |  | 5 |  |  | (4) |  |  | 172 |
Balance as of June 30, 2021 | $ | (167) |  |  | $ | (176) |  |  | $ | 3 |  |  | $ | (340) |
(In millions) | Pension Benefits |  | Other Benefits |  | Other |  | Total
Balance as of December 31, 2021 | $ | (117) |  |  | $ | 49 |  |  | $ | 1 |  |  | $ | (67) |
Other comprehensive gain (loss) before reclassifications, net of tax of $(8) | (19) |  |  | 3 |  |  | (6) |  |  | (22) |
Amounts reclassified from accumulated other comprehensive loss: |  |  |  |  |  |  |
Amortization of prior service credit(a) | (23) |  |  | (11) |  |  | — |  |  | (34) |
Amortization of actuarial loss(a) | 7 |  |  | 3 |  |  | — |  |  | 10 |
Settlement loss(a) | 56 |  |  | — |  |  | — |  |  | 56 |
Tax effect | (10) |  |  | 2 |  |  | — |  |  | (8) |
Other comprehensive income (loss) | 11 |  |  | (3) |  |  | (6) |  |  | 2 |
Balance as of June 30, 2022 | $ | (106) |  |  | $ | 46 |  |  | $ | (5) |  |  | $ | (65) |
(a)These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 22.

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