CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions		Total	IPO	Common stock	Common stock IPO	Additional paid-in capital	Additional paid-in capital IPO	Notes receivable from shareholders	Accumulated other comprehensive loss	Retained earnings	Noncontrolling interest
Beginning balance (in shares) at Oct. 31, 2019				63,386,251
Beginning balance at Oct. 31, 2019		$ 379.0		$ 0.1		$ 139.7		$ (0.1)	$ 0.0	$ 239.3	$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared		(13.0)								(13.0)
Issuance of common stock (in shares)				7,921	7,450,000
Issuance of common stock		0.1	$ 78.1			0.1	$ 78.1
Stock-based compensation		4.6				4.6
Reclassification of liability-based awards		0.3				0.3
Exercise of stock options (in shares)				17,000
Purchase and retirement of stock (in shares)				(310,250)
Purchase and retirement of stock		(3.9)								(3.9)
Net income		28.8								28.8
Other comprehensive loss		(0.5)							(0.5)
Ending balance (in shares) at Oct. 31, 2020				70,550,922
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		473.5		$ 0.1		222.8		(0.1)	(0.5)	251.2	0.0
Stock-based compensation		2.6				2.6
Repayment of stock option notes receivable		0.1						0.1
Exercise of stock options (in shares)				22,272
Exercise of stock options		0.2				0.2
Issuance of common stock for equity awards (in shares)				58,331
Net income		44.9								44.9
Cumulative effect of change in tax accounting principle | Accounting Standards Update 2019-12	[1]	12.9								12.9
Ending balance (in shares) at Oct. 31, 2021				70,631,525
Ending balance at Oct. 31, 2021		534.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		534.2		$ 0.1		225.6		0.0	(0.5)	309.0	0.0
Stock-based compensation		3.6				3.6
Issuance of common stock for equity awards (in shares)				38,010
Issuance of common stock for equity awards		0.1				0.1
Net income		(34.9)								(34.6)	(0.3)
Acquired noncontrolling interest		20.2									20.2
Contributions from noncontrolling interest holders		0.9									0.9
Other comprehensive loss		(1.2)							(1.2)
Ending balance (in shares) at Oct. 31, 2022				70,669,535
Ending balance at Oct. 31, 2022		502.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		$ 522.9		$ 0.1		$ 229.3		$ 0.0	$ (1.7)	$ 274.4	$ 20.8

[1] Related to the adoption of income tax guidance ASU 2019-12, wherein we derecognized a deferred tax liability against retained earnings.