| Identified Intangible Assets, Total Intangible Assets (Detail) - USD ($) $ in Millions | Dec. 26, 2015 | Dec. 27, 2014 | 
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| Intangible Assets, Net (Excluding Goodwill) [Abstract] | ||
| Total identified intangible assets, gross | $ 8,683 | $ 8,912 | 
| Identified intangible assets, net | $ 3,933 | $ 4,446 | 
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- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. No definition available. 
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- References No definition available. 
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