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 (loss)	$ 186	$ (74)	$ 273
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	148	149	155
Specialty Fluids loss on sale and asset impairment charge	29
Impairment of investment in equity affiliate	11
Long-lived asset impairment charge		162
Goodwill impairment charge		92
Deferred tax provision (benefit)	(27)	91	(31)
Employee benefit plan settlement	7
Gain on sale of land		(39)
Gain on sale of investments		(10)
Equity in net income of affiliated companies	(1)	(2)	(7)
Non-cash compensation	11	22	16
Other non-cash (income) expense	(3)	16	(3)
Changes in assets and liabilities:
Accounts and notes receivable	73	(127)	(64)
Inventories	27	(105)	(61)
Prepaid expenses and other current assets	18	(27)	(14)
Accounts payable and accrued liabilities	(75)	122	91
Income taxes payable	(6)	7	(2)
Other liabilities	(37)	12	(16)
Cash dividends received from equity affiliates	2	9	11
Cash provided by operating activities	363	298	348
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(224)	(229)	(147)
Proceeds from sale of business	135
Cash paid for acquisition of business, net of cash acquired of $—, $1 and $—	(3)	(64)
Proceeds from the sale of land		39
Proceeds from sales of investments		11
Other	(2)	(3)	(2)
Cash used in investing activities	(94)	(246)	(149)
Cash Flows from Financing Activities:
Borrowings under financing arrangements	29		1
Repayments under financing arrangements	(29)	(4)	(3)
Increase (decrease) in short-term borrowings, net		(4)	2
Proceeds from (repayments of) issuance of commercial paper, net	(216)	249
Proceeds from long-term debt, net of issuance costs	352	90
Repayments of long-term debt	(75)	(251)	(2)
Repayments of redeemable preferred stock	(25)
Purchases of common stock	(173)	(142)	(61)
Proceeds from sales of common stock	4	22	21
Cash dividends paid to noncontrolling interests	(23)	(21)	(14)
Cash dividends paid to common stockholders	(80)	(80)	(77)
Cash used in financing activities	(236)	(141)	(133)
Effects of exchange rate changes on cash	(39)	(16)	14
Increase (decrease) in cash and cash equivalents	(6)	(105)	80
Cash and cash equivalents at beginning of year	175	280	200
Cash and cash equivalents at end of year	169	175	280
Income taxes paid	99	84	69
Interest paid	$ 47	$ 47	$ 48