Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Changes in Stockholders' Equity (Details)

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Stockholders' Equity Changes in Stockholders' Equity (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 25, 2018
Dec. 24, 2017
Mar. 26, 2017
Dec. 25, 2016
Mar. 25, 2018
Mar. 26, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Balance at beginning of the period   $ 30,746     $ 30,746  
Net income (loss) $ 363   $ 749   (5,590) $ 1,431
Other comprehensive income 160   43   161 (198)
Common stock issued under employee benefit plans and related tax benefits         343  
Share-based compensation         499  
Tax withholdings related to vesting of share-based payments         (196)  
Dividends (857) $ (862) $ (798) $ (801) (1,719) (1,599)
Stock repurchases         (425) $ (727)
Balance at end of the period $ 23,819       $ 23,819