Valuation and Qualifying Accounts (Detail) - Valuation allowance for deferred tax assets [Member] - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 26, 2015 |
Dec. 27, 2014 |
|
| Valuation Allowances And Reserves, Disclosure [Roll Forward] | |||
| Valuation Allowances And Reserves, Beginning Balance | $ 701 | $ 595 | $ 456 |
| Valuation Allowances And Reserves, Additions Charged to Expenses/Other Accounts | 261 | 190 | 128 |
| Valuation Allowances And Reserves, Net (Deductions) Recoveries | (9) | (84) | 11 |
| Valuation Allowances And Reserves, Ending Balance | $ 953 | $ 701 | $ 595 |
| X | ||||||||||
- Definition Net (Deductions) Recoveries No definition available.
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|