Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Operating Activities
Net Income (Loss) Attributable to Parent	$ 72.0	$ 63.8	$ 105.6
Adjustments to reconcile net income (loss) to income (loss) from continuing operations:
Depreciation	29.6	26.0	20.9
Amortization	28.2	27.0	22.8
Pension plans	2.8	2.0	2.8
Deferred income taxes	7.2	1.3	(43.3)
Stock-based compensation expense	5.3	4.3	5.2
Loss on early extinguishment of debt	0.0	0.0	6.5
Gain (Loss) on Disposition of Assets		2.5
Gain on sale of idle property	0.0	(2.4)	(9.0)
Other, net	8.0	2.4	3.4
Changes in assets and liabilities, net of acquisitions:
Receivables	(7.5)	(1.4)	(18.9)
Inventories	24.9	(17.4)	(18.4)
Other current assets and other noncurrent assets	0.9	(7.4)	(2.0)
Accounts payable	(17.6)	(11.0)	7.7
Walter Energy accrual	(22.0)	22.0	0.0
Increase (Decrease) in Accrued Liabilities	6.6	(6.1)	32.7
Pension contributions	0.0	(0.7)	0.0
Long-term liabilities	1.9	(9.8)	17.1
Net Cash Provided by (Used in) Operating Activities, Total	140.3	92.5	133.1
Investing activities:
Capital expenditures	(67.7)	(86.6)	(55.7)
Acquisitions, net of cash acquired	0.0	(127.5)	0.0
Proceeds from sales of assets	0.2	2.3	7.8
Net Cash Provided by (Used in) Investing Activities, Total	(67.5)	(211.8)	(47.9)
Financing activities:
Dividends paid	(33.1)	(32.0)	(30.1)
Payments to Noncontrolling Interests	(5.2)	0.0	0.0
Payments for Repurchase of Common Stock	(5.0)	(10.0)	(30.0)
Common stock issued	3.5	5.2	7.3
Shares retained for employee taxes	(0.9)	(1.3)	(2.1)
Repayment of debt	0.0	0.0	(486.3)
Repayment of Krausz debt	0.0	(13.2)	0.0
Issuance of debt	0.0	0.0	450.0
Payment of deferred financing fees	(1.1)	0.0	(6.9)
Other	0.4	0.4	(0.2)
Net Cash Provided by (Used in) Financing Activities, Total	(41.4)	(50.9)	(98.3)
Effect of currency exchange rate changes on cash	0.8	(0.2)	(1.5)
Net change in cash and cash equivalents	32.2	(170.4)	(14.6)
Cash and cash equivalents at beginning of period	176.7	347.1	361.7
Cash and cash equivalents at end of period	$ 208.9	$ 176.7	$ 347.1