STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Sales	$ 576	$ 581
Cost of sales	424	402
Gross profit	152	179
Selling, general and administrative expense	143	154
Research and development expense	17	19
Equity and other income (loss)	1	(1)
Operating income (loss)	(7)	5
Net interest and other financing expense	55	26
Other net periodic benefit income	18	0
Net loss on divestitures	3	1
Loss from continuing operations before income taxes	(47)	(22)
Income tax expense	24	10
Loss from continuing operations	(71)	(32)
Income from discontinued operations (net of income taxes)	23	28
Net loss	$ (48)	$ (4)
Basic earnings per share - Note L
Loss from continuing operations	$ (1.14)	$ (0.51)
Income from discontinued operations	0.38	0.44
Net loss	(0.76)	(0.07)
Diluted earnings per share - Note L
Loss from continuing operations	(1.14)	(0.51)
Income from discontinued operations	0.38	0.44
Net loss	$ (0.76)	$ (0.07)
COMPREHENSIVE INCOME (LOSS)
Net loss	$ (48)	$ (4)
Other comprehensive loss, net of tax
Unrealized translation gain (loss)	(31)	3
Net change in investment securities	0	8
Pension and postretirement obligation adjustment	(6)	0
Other comprehensive income (loss)	(37)	11
Comprehensive income (loss)	$ (85)	$ 7