Equity (Schedule of Share Repurchases) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Class of Stock [Line Items]
Payments for Repurchase of Common Stock	$ 17	$ 132
Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.3	1.5
Payments for Repurchase of Common Stock	$ 17	$ 132
Under share repurchase program | Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.0	1.1
Payments for Repurchase of Common Stock	$ 0	$ 100
To fund certain obligations under equity compensation plans | Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.3	0.4
Payments for Repurchase of Common Stock	$ 17	$ 32