Equity-Based Compensation Compensation Expense Related to Restricted Stock Units of 21CF (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Mar. 28, 2020	[1]	Mar. 30, 2019		Mar. 28, 2020	Mar. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense	$ 103		$ 340	[1]	$ 197	$ 413
TFCF
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense			$ 259			$ 259

[1] Includes TFCF Performance RSUs converted to Company RSUs in connection with the TFCF acquisition. For both the quarter and six months ended March 30, 2019, the Company recognized $259 million of equity based compensation in connection with the TFCF acquisition.