Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income	$ 420	$ 317	$ 208
Adjustments to reconcile to cash flows from operations
Loss on extinguishment of debt	36	19	0
Depreciation and amortization	92	66	61
Deferred income taxes	48	92	23
Pension contributions	(5)	(11)	(10)
(Gain) loss on pension and other postretirement plan remeasurements	(72)	(22)	69
Stock-based compensation expense	14	12	9
Other, net	4	(5)	(5)
Change in assets and liabilities
Receivables	(65)	(11)	(30)
Inventories	(53)	(1)	(10)
Payables and accrued liabilities	95	(3)	37
Other assets and liabilities	(110)	(81)	(27)
Total cash provided by operating activities	404	372	325
Cash flows from investing activities
Additions to property, plant and equipment	(144)	(151)	(108)
Notes receivable, net of repayments of $3 million in 2020	17	(31)	(2)
Acquisitions of businesses, net of cash acquired	(282)	(40)	(78)
Other investing activities, net	9	0	0
Total cash used in investing activities	(400)	(222)	(188)
Cash flows from financing activities
Proceeds from borrowings	555	1,558	752
Payments of debt issuance costs and discounts	(7)	(16)	(2)
Repayments on borrowings	(829)	(929)	(734)
Premium paid to extinguish debt	(26)	(15)	0
Repurchases of common stock	(127)	(60)	0
Cash dividends paid	(91)	(84)	(80)
Other financing activities	(11)	(4)	(7)
Total cash (used in) provided by financing activities	(536)	450	(71)
Effect of currency exchange rate changes on cash, cash equivalents, and restricted cash	2	2	(3)
(Decrease) increase in cash, cash equivalents and restricted cash	(530)	602	63
Cash, cash equivalents and restricted cash - beginning of year	761	159	96
Cash, cash equivalents and restricted cash - end of year	231	761	159
Interest paid	62	65	67
Income taxes paid	$ 72	$ 44	$ 25