Equity-Based Compensation - Impact of Stock Options/Rights and Restricted Stock Units on Income and Cash Flows (Detail) - USD ($) $ in Millions		12 Months Ended
		Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock option compensation expense		$ 84	$ 87	$ 90
RSU compensation expense	[1]	627	306	274
Total equity-based compensation expense	[2]	711	393	364
Tax impact		(161)	(99)	(123)
Reduction in net income		550	294	241
Equity-based compensation expense capitalized during the period		$ 81	$ 70	$ 78

[1] Includes TFCF Performance RSUs converted to Company RSUs in connection with the TFCF acquisition (see Note 4). In fiscal 2019, the Company recognized $307 million of equity based compensation in connection with the TFCF acquisition.

[2] Equity-based compensation expense is net of capitalized equity-based compensation and estimated forfeitures and excludes amortization of previously capitalized equity-based compensation costs.