Equity-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Mar. 20, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense	[1]	$ 114	$ 92	$ 527	$ 240
Weighted average grant date fair values of options issued			$ 28.01	$ 28.74
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		149		$ 149
Stock compensation granted, number of shares				4.0
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		716		$ 716
Stock compensation granted, number of shares				3.4
21CF
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense		$ 39		$ 279
21CF | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost						$ 219

[1] Includes 21CF RSUs converted to Company RSUs in connection with the acquisition of 21CF (see Note 4). For the quarter and nine months ended, the Company recognized $39 million and $279 million, respectively, of equity based compensation in connection with the 21CF acquisition.