Accounts Receivable - Summary (Details) - USD ($) $ in Millions	Sep. 30, 2019	Oct. 01, 2018	Sep. 30, 2018
Receivables [Abstract]
Trade	$ 392		$ 390
Other	15		26
Accounts receivable, gross	407		416
Allowance for doubtful accounts	(6)		(7)
Total accounts receivable, net	$ 401	$ 376	$ 409

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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