Annual report pursuant to Section 13 and 15(d)

Other Comprehensive Income (Loss), Accumulated Other Comprehensive Income (Loss) (Detail)

v3.8.0.1
Other Comprehensive Income (Loss), Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Dec. 26, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Other Comprehensive Income (Loss), before Reclassifications, before Tax $ 3,643 $ 460  
Amounts Reclassified Out Of Accumulated Other Comprehensive Income (Loss), before Tax (2,890) (322) $ 506
Tax effects 3 (92)  
Other comprehensive income (loss) 756 46 (606)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months 108    
Unrealized holding gains (losses) on available-for-sale investments [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1,728 2,164 1,749
Other Comprehensive Income (Loss), before Reclassifications, before Tax 2,760 1,170  
Amounts Reclassified Out Of Accumulated Other Comprehensive Income (Loss), before Tax (3,431) (530)  
Tax effects 235 (225)  
Other comprehensive income (loss) (436) 415  
Valuation Allowance of Deferred Tax Assets [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 0 0 8
Other Comprehensive Income (Loss), before Reclassifications, before Tax 0 0  
Amounts Reclassified Out Of Accumulated Other Comprehensive Income (Loss), before Tax 0 0  
Tax effects 0 (8)  
Other comprehensive income (loss) 0 (8)  
Unrealized holding gains (losses) on derivatives [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 106 (259) (266)
Other Comprehensive Income (Loss), before Reclassifications, before Tax 605 (26)  
Amounts Reclassified Out Of Accumulated Other Comprehensive Income (Loss), before Tax (69) 38  
Tax effects (171) (5)  
Other comprehensive income (loss) 365 7  
Actuarial gains (losses) [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (963) (1,280) (916)
Other Comprehensive Income (Loss), before Reclassifications, before Tax 275 (680)  
Amounts Reclassified Out Of Accumulated Other Comprehensive Income (Loss), before Tax 103 170 77
Tax effects (61) 146  
Other comprehensive income (loss) 317 (364)  
Foreign Currency translation adjustment [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (9) (519) (515)
Other Comprehensive Income (Loss), before Reclassifications, before Tax 3 (4)  
Amounts Reclassified Out Of Accumulated Other Comprehensive Income (Loss), before Tax 507 0  
Tax effects 0 0  
Other comprehensive income (loss) 510 (4)  
AOCI Including Portion Attributable to Noncontrolling Interest [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 862 $ 106 $ 60