Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Revenues	$ 964.1	$ 968.0	$ 916.0
Cost of sales	635.9	647.1	626.1
Gross profit	328.2	320.9	289.9
Operating expenses:
Selling, general and administrative	198.4	182.7	166.7
Gain on sale of idle property	0.0	(2.4)	(9.0)
Other Cost and Expense, Operating	13.0	16.3	10.5
Total operating expenses	211.4	196.6	168.2
Operating income	116.8	124.3	121.7
Defined Benefit Plan, Net Periodic Benefit Cost other than Service Cost	(3.0)	0.4	1.0
Interest expense, net	25.5	19.8	20.9
Gain on settlement of interest rate swap contracts	0.0	0.0	(2.4)
Walter Energy Accrual	0.2	22.0	0.0
Loss on early extinguishment of debt	0.0	0.0	6.5
Net Income Before Income Tax	94.1	82.1	95.7
Income tax expense (benefit)	22.1	18.3	(9.9)
Net Income (Loss) Attributable to Parent	$ 72.0	$ 63.8	$ 105.6
Net loss per basic share:
Continuing operations, in dollars per share	$ 0.46	$ 0.40	$ 0.67
Net loss per diluted share:
Continuing operations	$ 0.45	$ 0.40	$ 0.66
Weighted average shares outstanding:
Basic, in shares	157.8	157.8	158.2
Diluted, in shares	158.6	159.0	159.7
Dividends declared per share, in dollars per share	$ 0.2100	$ 0.2025	$ 0.1900