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Other Changes In Plan Assets and Benefit Obligations Recognized In Other Comprehensive Loss (Income) (Detail) - North America - USD ($) $ in Millions | 12 Months Ended
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Dec. 25, 2021 | Dec. 26, 2020 | Dec. 28, 2019
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated other comprehensive loss (income) at beginning of year | $ (21) | $ 9 | $ 35
Net loss (gain) | (25) | (30) | (26)
Accumulated other comprehensive loss (income) at end of year | (46) | (21) | 9
Other Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated other comprehensive loss (income) at beginning of year | 1 |  | (1)
Net loss (gain) | $ (1) | 1 | $ 1
Accumulated other comprehensive loss (income) at end of year |  | $ 1 |

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