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Stockholders' Equity and Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Components of and changes in accumulated other comprehensive loss, net of tax |  |  |
Balance at beginning of the period | $ (471) | $ (440) |
Other comprehensive income (loss) before reclassifications | 26 | (45) |
Amounts reclassified from accumulated other comprehensive loss to net earnings | 13 | 14 |
Other comprehensive income (loss), net of tax | 39 | (31) |
Balance at end of the period | (432) | $ (471) | $ (440)
Common shares repurchased (in shares) |  | 4,069 | 4,369
Repurchase of common stock |  | $ 13 | $ 17
Cumulative Foreign Currency Translation Adjustment |  |  |
Components of and changes in accumulated other comprehensive loss, net of tax |  |  |
Balance at beginning of the period | (376) | (369) |
Other comprehensive income (loss) before reclassifications | 8 | (7) |
Other comprehensive income (loss), net of tax | 8 | (7) |
Balance at end of the period | (368) | (376) | (369)
Unrecognized Pension Cost |  |  |
Components of and changes in accumulated other comprehensive loss, net of tax |  |  |
Balance at beginning of the period | (95) | (71) |
Other comprehensive income (loss) before reclassifications | 18 | (38) |
Amounts reclassified from accumulated other comprehensive loss to net earnings | 13 | 14 |
Other comprehensive income (loss), net of tax | 31 | (24) |
Balance at end of the period | $ (64) | $ (95) | $ (71)
All components of AOCL except cumulative foreign currency translation adjustments |  |  |
Components of and changes in accumulated other comprehensive loss, net of tax |  |  |
Effective income tax rate (as a percent) | 25.00% | 25.00% | 26.00%
Certain subsidiaries |  |  |
Components of and changes in accumulated other comprehensive loss, net of tax |  |  |
Unrecognized pension cost related to employees at certain subsidiaries | $ 24 | $ 34 | $ 21
Certain subsidiaries | Unrecognized Pension Cost |  |  |
Components of and changes in accumulated other comprehensive loss, net of tax |  |  |
Tax benefit recorded on unrecognized pension cost | $ 0 | $ 0 | $ 0

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