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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. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated other comprehensive loss (income) at beginning of year | $ (2) | $ 38 | $ 76
Net loss (gain) | 37 | (40) | (38)
Accumulated other comprehensive loss (income) at end of year | 35 | (2) | 38
Other Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated other comprehensive loss (income) at beginning of year |  | (1) | (1)
Net loss (gain) | (1) | $ 1 |
Accumulated other comprehensive loss (income) at end of year | $ (1) |  | $ (1)

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