STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Sales	$ 610	$ 667	$ 1,143	$ 1,243
Cost of sales	413	469	793	893
Gross profit	197	198	350	350
Selling, general and administrative expense	103	115	202	236
Research and development expense	18	17	34	34
Intangibles amortization expense	21	21	42	43
Equity and other income (loss)	7	(1)	7	0
Goodwill impairment - Note G	530	0	530	0
Operating income (loss)	(468)	44	(451)	37
Net interest and other expense (income)	117	(3)	127	52
Other net periodic benefit income (expense)	0	(1)	0	17
Net income (loss) on divestitures	0	0	3	(3)
Income (loss) from continuing operations before income taxes	(585)	46	(575)	(1)
Income tax expense (benefit)	(10)	1	(34)	25
Income (loss) from continuing operations	(575)	45	(541)	(26)
Income (loss) from discontinued operations (net of income taxes)	(7)	31	(9)	54
Net income (loss)	$ (582)	$ 76	$ (550)	$ 28
Basic earnings per share - Note M
Income (loss) from continuing operations	$ (9.48)	$ 0.72	$ (8.93)	$ (0.41)
Income (loss) from discontinued operations	(0.13)	0.49	(0.15)	0.86
Net income (loss)	(9.61)	1.21	(9.08)	0.45
Diluted earnings per share - Note M
Income (loss) from continuing operations	(9.48)	0.71	(8.93)	(0.41)
Income (loss) from discontinued operations	(0.13)	0.48	(0.15)	0.86
Net income (loss)	$ (9.61)	$ 1.19	$ (9.08)	$ 0.45
COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ (582)	$ 76	$ (550)	$ 28
Other comprehensive income (loss), net of tax
Unrealized translation gain (loss)	(52)	(9)	(14)	(40)
Pension and postretirement obligation adjustment	0	0	0	(6)
Other comprehensive income (loss)	(52)	(9)	(14)	(46)
Comprehensive income (loss)	$ (634)	$ 67	$ (564)	$ (18)