Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 31, 2020
Deferred tax assets attributable to:
Self-insurance claims (net of recoverables)	$ 92.0	$ 74.7
Deferred and other compensation	34.4	28.6
Accounts receivable allowances	8.2	8.8
Settlement liabilities	44.2	5.0
Other accruals	6.6	1.5
Other comprehensive income	1.3	2.7
State taxes	0.7	1.4
State net operating loss carryforwards	4.0	5.9
Tax credits	2.9	3.7
Unrecognized tax benefits	3.3	3.2
Deferred payroll taxes	35.1	26.9
Operating lease liabilities	33.5	38.2
Gross deferred tax assets	266.2	200.6
Valuation allowance	(2.2)	(4.1)
Total deferred tax assets	264.0	196.5
Deferred tax liabilities attributable to:
Property, plant and equipment	(4.1)	(1.2)
Goodwill and other acquired intangibles	(222.2)	(159.4)
Right-of-use assets	(33.8)	(38.2)
Tax accounting method change	(15.8)	0.0
Other	(10.6)	(8.5)
Total deferred tax liabilities	(286.5)	(207.3)
Net deferred tax liabilities	$ (22.5)	$ (10.8)