SEC Schedule, Article 12-09, Valuation and Qualifying Accounts

12 Months Ended

Sep. 30, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

	Year Ended September 30,
(in millions)	2019		2018		2017
Accounts Receivable - Allowance for Doubtful Accounts
Balance at beginning of period	$	15	$	20	$	21
Provision charged to costs and expenses	15		12		13
Reserve adjustments	(16)		(17)		(14)
Balance at end of period	$	14	$	15	$	20
Deferred Tax Assets - Valuation Allowance
Balance at beginning of period	$	846	$	223	$	267
Allowance provision for new operating and other loss carryforwards	488		669		23
Allowance provision (benefit) adjustments	(30)		(46)		(67)
Balance at end of period	$	1,304	$	846	$	223