Derivative Financial Instruments (Tables)

6 Months Ended

Mar. 31, 2018

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Amounts Recorded in Consolidated Balance Sheet

The following is a summary of amounts recorded in the Consolidated Balance Sheet pertaining to the Company’s designated cash flows hedges at March 31, 2018 and September 30, 2017:

	March 31,		September 30,
	2018 (a)		2017
	(in millions)
Other current assets	$	2	$	—
Other current liabilities		3		—
Other noncurrent assets		—		—
Other noncurrent liabilities		1		—