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. 28, 2019 USD ($) $ / shares shares
Number of Restricted Stock Units
Beginning balance (in shares) | shares	81,517
RSUs granted (in shares) | shares	33,775
RSUs vested (in shares) | shares	(17,837)
RSUs canceled (in shares) | shares	(1,435)
Ending balance (in shares) | shares	96,020
Weighted-Average Grant Date Fair Value Per RSU
Beginning balance (in dollars per share) | $ / shares	$ 169.18
RSUs granted (in dollars per share) | $ / shares	220.78
RSUs vested (in dollars per share) | $ / shares	150.42
RSUs canceled (in dollars per share) | $ / shares	184.51
Ending balance (in dollars per share) | $ / shares	$ 190.59
Aggregate Fair Value
Aggregate fair value of RSUs | $	$ 27,827