CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Common Stock and Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Beginning balances (in shares) at Sep. 27, 2014		5,866,161
Beginning balances at Sep. 27, 2014	$ 111,547	$ 23,313	$ 87,152	$ 1,082
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	53,394	0	53,394	0
Other comprehensive income/(loss)	(1,427)	0	0	(1,427)
Dividends and dividend equivalents declared	(11,627)	$ 0	(11,627)	0
Repurchase of common stock (in shares)		(325,032)
Repurchase of common stock	(36,026)	$ 0	(36,026)	0
Share-based compensation	3,586	$ 3,586	0	0
Common stock issued, net of shares withheld for employee taxes (in shares)		37,624
Common stock issued, net of shares withheld for employee taxes	(840)	$ (231)	(609)	0
Tax benefit from equity awards, including transfer pricing adjustments	748	$ 748	0	0
Ending balances (in shares) at Sep. 26, 2015		5,578,753
Ending balances at Sep. 26, 2015	119,355	$ 27,416	92,284	(345)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	45,687	0	45,687	0
Other comprehensive income/(loss)	979	0	0	979
Dividends and dividend equivalents declared	(12,188)	$ 0	(12,188)	0
Repurchase of common stock (in shares)		(279,609)
Repurchase of common stock	(29,000)	$ 0	(29,000)	0
Share-based compensation	4,262	$ 4,262	0	0
Common stock issued, net of shares withheld for employee taxes (in shares)		37,022
Common stock issued, net of shares withheld for employee taxes	(1,225)	$ (806)	(419)	0
Tax benefit from equity awards, including transfer pricing adjustments	$ 379	$ 379	0	0
Ending balances (in shares) at Sep. 24, 2016	5,336,166	5,336,166
Ending balances at Sep. 24, 2016	$ 128,249	$ 31,251	96,364	634
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	48,351	0	48,351	0
Other comprehensive income/(loss)	(784)	0	0	(784)
Dividends and dividend equivalents declared	(12,803)	$ 0	(12,803)	0
Repurchase of common stock (in shares)		(246,496)
Repurchase of common stock	(33,001)	$ 0	(33,001)	0
Share-based compensation	4,909	$ 4,909	0	0
Common stock issued, net of shares withheld for employee taxes (in shares)		36,531
Common stock issued, net of shares withheld for employee taxes	(1,494)	$ (913)	(581)	0
Tax benefit from equity awards, including transfer pricing adjustments	$ 620	$ 620	0	0
Ending balances (in shares) at Sep. 30, 2017	5,126,201	5,126,201
Ending balances at Sep. 30, 2017	$ 134,047	$ 35,867	$ 98,330	$ (150)