Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities at Fair Value

The following table sets forth, by level within the fair value hierarchy, the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis:

	June 30, 2018				September 30, 2017
			Quoted prices in active markets for identical assets				Quoted prices in active markets for identical assets
(In millions)	Fair value		Level 1		Fair value		Level 1
Assets
Cash equivalents (a)	$	16	$	16	$	46	$	46
Foreign currency derivatives (b)	—		—		1		1
Non-qualified trust funds (c)	28		28		30		30
Total assets at fair value	$	44	$	44	$	77	$	77
Liabilities
Foreign currency derivatives (d)	$	2	$	2	$	1	$	1
Total liabilities at fair value	$	2	$	2	$	1	$	1

(a) Included in Cash and cash equivalents in the Condensed Consolidated Balance Sheets.

(b) Included in Other current assets in the Condensed Consolidated Balance Sheets.

(c) As of June 30, 2018, $3 million of this balance is included in Other current assets, with the remainder included in Other noncurrent assets in the Condensed Consolidated Balance Sheets. As of September 30, 2017, this balance is included in Other noncurrent assets in the Condensed Consolidated Balance Sheets.

(d) Included in Accrued expenses and other liabilities in the Condensed Consolidated Balance Sheets.

Summary of Fair Value of Debt

Carrying values shown in the following table are net of unamortized discounts and issuance costs.

	June 30, 2018						September 30, 2017
(In millions)	Fair value		Carrying value		Unamortized discount and issuance costs		Fair value		Carrying value		Unamortized discount and issuance costs
2024 Notes	$	380	$	370	$	5	$	401	$	370	$	5
2025 Notes	386		395		5		408		394		6
Total	$	766	$	765	$	10	$	809	$	764	$	11