Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities:
Net income (loss)	$ 66	$ (80)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	35	39
Purification Solutions loss on sale and asset impairment charge	3	197
Gain on sale of land	(1)
Deferred tax provision (benefit)		(36)
Equity in earnings of affiliated companies	(2)	(1)
Share-based compensation	6	6
Other non-cash (income) expense	(4)	5
Cash dividends received from equity affiliates	2
Changes in assets and liabilities:
Accounts and notes receivable	80	(57)
Inventories	(14)	(95)
Prepaid expenses and other assets	(12)	(27)
Accounts payable and accrued liabilities	(100)	9
Income taxes payable	(10)	3
Other liabilities	3	(12)
Cash provided (used) by operating activities	52	(49)
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(35)	(30)
Proceeds from sale of land	7
Proceeds from sale of Purification Solutions business	6
Other	5	1
Cash provided (used) by investing activities	(17)	(29)
Cash Flows from Financing Activities:
Proceeds from short-term borrowings	11
Proceeds from issuance (repayments) of commercial paper, net	(48)	156
Repayments of long-term debt	(6)	(5)
Purchases of common stock	(17)	(19)
Proceeds from sales of common stock	3
Cash dividends paid to noncontrolling interests	(14)	(8)
Cash dividends paid to common stockholders	(21)	(21)
Cash provided (used) by financing activities	(92)	103
Effects of exchange rate changes on cash	41	(15)
Increase (decrease) in cash, cash equivalents and restricted cash	(16)	10
Cash, cash equivalents and restricted cash at beginning of period	206	170
Cash, cash equivalents and restricted cash at end of period	190	180
Cash and cash equivalents	$ 190	179
Restricted cash classified within Prepaid expenses and other current assets		$ 1
Restricted Cash and Cash Equivalents, Current, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense And Other Assets Current	Prepaid Expense And Other Assets Current
Cash, cash equivalents and restricted cash	$ 190	$ 180