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Fair Value of Pension Plan Assets (Detail) - North America - Pension Benefits - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 26, 2015 | Dec. 27, 2014
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 870 | $ 922 | $ 1,039
Money Market Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 25 | 19 |
Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 93 | 87 |
Equity Securities | U S Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 29 | 25 |
Equity Securities | Us Small And Mid Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4 | 4 |
Equity Securities | International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 60 | 58 |
Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 437 | 519 |
Fixed Income Securities | Corporate Bond Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 407 | 485 |
Fixed Income Securities | US Treasury Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14 | 10 |
Fixed Income Securities | Other Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 16 | 24 |
All Other Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 315 | 297 |
All Other Securities | Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 290 |
All Other Securities | Other Including Plan Receivables And Payables |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3 | 7 |
All Other Securities | Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 312 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 96 | 94 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 93 | 87 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities | U S Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 29 | 25 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities | Us Small And Mid Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4 | 4 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities | International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 60 | 58 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | All Other Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3 | 7 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | All Other Securities | Other Including Plan Receivables And Payables |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3 | 7 |
Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 774 | 828 |
Significant Observable Inputs (Level 2) | Money Market Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 25 | 19 |
Significant Observable Inputs (Level 2) | Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 437 | 519 |
Significant Observable Inputs (Level 2) | Fixed Income Securities | Corporate Bond Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 407 | 485 |
Significant Observable Inputs (Level 2) | Fixed Income Securities | US Treasury Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14 | 10 |
Significant Observable Inputs (Level 2) | Fixed Income Securities | Other Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 16 | 24 |
Significant Observable Inputs (Level 2) | All Other Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 312 | 290 |
Significant Observable Inputs (Level 2) | All Other Securities | Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 290 |
Significant Observable Inputs (Level 2) | All Other Securities | Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 312 |  |

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