Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net income		$ 208	$ 166	$ 304
Adjustments to reconcile to cash flows from operations
Depreciation and amortization		61	54	42
Deferred income taxes		23	145	117
Equity income from unconsolidated affiliates, net of distributions		(3)	(4)	(4)
Pension contributions		(10)	(16)	(412)
Loss (gain) on pension and other postretirement plan remeasurements		69	38	(68)
Stock-based compensation expense		9	12	9
Other, net		(2)	4	3
Change in assets and liabilities
Accounts receivable	[1]	(30)	(38)	(22)
Inventories	[1]	(10)	(4)	(35)
Payables and accrued liabilities	[1]	37	(2)	0
Other assets and liabilities	[1]	(27)	(35)	(64)
Total cash provided by (used in) operating activities		325	320	(130)
Cash flows from investing activities
Additions to property, plant and equipment		(108)	(93)	(68)
Acquisitions, net of cash acquired		(78)	(125)	(68)
Other investing activities, net		(2)	5	1
Total cash used in investing activities		(188)	(213)	(135)
Cash flows from financing activities
Net transfers from Ashland		0	0	5
Proceeds from borrowings, net of issuance costs		750	304	470
Repayments on borrowings		(734)	(108)	(90)
Repurchases of common stock		0	(325)	(50)
Purchase of additional ownership in subsidiary		(1)	(15)	0
Cash dividends paid		(80)	(58)	(40)
Other financing activities		(6)	(7)	0
Total cash (used in) provided by financing activities		(71)	(209)	295
Effect of currency exchange rate changes on cash, cash equivalents, and restricted cash		(3)	(3)	(1)
Increase (decrease) in cash, cash equivalents, and restricted cash		63	(105)	29
Cash, cash equivalents, and restricted cash - beginning of year		96	201	172
Cash, cash equivalents, and restricted cash - end of year		159	96	201
Supplemental disclosures
Interest paid		67	53	35
Income taxes paid		$ 25	$ 26	$ 26

[1] Excludes changes resulting from operations acquired or sold.