Benefit Plans - Restricted Stock Units Activity and Related Information (Details) - Restricted stock units $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Dec. 30, 2017 USD ($) $ / shares shares
Number of Restricted Stock Units
Beginning balance (in shares) | shares	97,571
RSUs granted (in shares) | shares	35,853
RSUs vested (in shares) | shares	(19,741)
RSUs canceled (in shares) | shares	(1,316)
Ending balance (in shares) | shares	112,367
Weighted-Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share) | $ / shares	$ 110.33
RSUs granted (in dollars per share) | $ / shares	157.49
RSUs vested (in dollars per share) | $ / shares	102.40
RSUs canceled (in dollars per share) | $ / shares	121.76
Ending balance (in dollars per share) | $ / shares	$ 126.64
Aggregate Fair Value
Aggregate fair value of restricted stock units | $	$ 19,016