Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (49)	$ (62)	$ (68)	$ (212)
Other comprehensive (loss) income:
Pension, postretirement and postemployment benefit-related items, net of tax benefit of $7 and $18 for the three and nine months ended June 30, 2015 and $5 and $14 for the three and nine months ended June 30, 2014, respectively	10	9	34	24
Cumulative translation adjustment, net of tax benefit of $0 and $0 for the three and nine months ended June 30, 2015 and $1 and $2 for the three and nine months ended June 30, 2014, respectively	(25)	4	51	(11)
Other	0	0	0	(1)
Other comprehensive (loss) income	(15)	13	85	12
Comprehensive (loss) income	$ (64)	$ (49)	$ 17	$ (200)