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Stockholders' Equity and Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 21 Months Ended |
--- | --- | --- | --- | ---
Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Sep. 28, 2019 | Sep. 29, 2018 | Sep. 28, 2019 | Dec. 31, 2018
Stockholders' Equity and Accumulated Other Comprehensive Loss |  |  |  |  |  |  |  |  |  |
Stock repurchase programs, authorized amount | $ 78 |  |  |  |  |  | $ 78 |  | $ 78 |
Common shares repurchased (in shares) |  |  |  |  |  |  | 4,369 |  |  |
Repurchase of common stock | 3 | $ 1 | $ 13 |  |  |  | $ 17 |  |  |
Changes in the components of other comprehensive loss (OCL), net of related taxes |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment | 2 |  |  | $ (25) |  |  | (9) | $ (52) |  |
Unrecognized pension cost | 1 |  |  | 1 |  |  | 7 | (1) |  |
Other comprehensive income (loss), net of tax | 3 | $ (6) | $ 1 | (24) | $ (20) | $ (9) | (2) | (53) |  |
Components of accumulated other comprehensive loss, net of related taxes |  |  |  |  |  |  |  |  |  |
Accumulated other comprehensive loss | (412) |  |  |  |  |  | (412) |  | (412) | $ (410)
Certain subsidiaries |  |  |  |  |  |  |  |  |  |
Components of accumulated other comprehensive loss, net of related taxes |  |  |  |  |  |  |  |  |  |
Unrecognized pension cost related to employees at certain subsidiaries | 20 |  |  | $ 23 |  |  | 20 | $ 23 | 20 |
Tax benefit recorded on unrecognized pension cost |  |  |  |  |  |  | 0 |  |  |
Foreign currency translation adjustment |  |  |  |  |  |  |  |  |  |
Components of accumulated other comprehensive loss, net of related taxes |  |  |  |  |  |  |  |  |  |
Accumulated other comprehensive loss | (358) |  |  |  |  |  | (358) |  | (358) | (349)
Unrecognized pension cost |  |  |  |  |  |  |  |  |  |
Components of accumulated other comprehensive loss, net of related taxes |  |  |  |  |  |  |  |  |  |
Accumulated other comprehensive loss | $ (54) |  |  |  |  |  | $ (54) |  | $ (54) | $ (61)
Effective income tax rate (as a percent) |  |  |  |  |  |  |  |  | 26.00% |

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