Stockholders' Deficit (Tables)

6 Months Ended

Mar. 31, 2018

Equity [Abstract]

Schedule of Changes in Stockholders' Deficit

Changes in stockholders’ deficit in the six months ended March 31, 2018 were as follows:

(In millions)
Balance as of September 30, 2017		$	(117	)
	Net income	57
	Repurchases of common stock (a)	(126		)
	Stock-based compensation plans	4
	Dividends paid, $0.149 per common share	(30		)
	Purchase of remaining ownership interest in subsidiary (b)	(14		)
	Accumulated other comprehensive income (loss), net of tax:
	Unrealized currency translation gain	4
	Amortization of pension and other postretirement prior service credits in income (c)	(4		)
Balance as of March 31, 2018		$	(226	)

(a) During the six months ended March 31, 2018, the Company repurchased more than 5 million shares of its common stock for $126 million. Upon repurchase, shares are retired.

(b) Refer to Note 3 for details regarding the Company’s purchase of the remaining ownership interest in a controlled and consolidated subsidiary during the six months ended March 31, 2018.

(c) Amortization of unrecognized prior service credits is included in net periodic benefit income within Net pension and other postretirement plan non-service income and remeasurement adjustments in the Condensed Consolidated Statements of Comprehensive Income.