Income Taxes (Tables)

12 Months Ended

Oct. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Geographic Sources of Income From Continuing Operations Before Income Taxes

Geographic Sources of Income from Continuing Operations Before Income Taxes

	Years Ended October 31,
(in millions)	2019		2018			2017
United States	$	137.1	$	94.8		$	76.1
Foreign	23.1		(7.1		)	10.8
Income from continuing operations before income taxes	$	160.2	$	87.7		$	86.9

Schedule of Components of Income Tax (Provision) Benefit

Components of Income Tax (Provision) Benefit

	Years Ended October 31,
(in millions)	2019			2018			2017
Current:
Federal	$	(6.4	)	$	(4.3	)	$	(5.9	)
State	(10.7		)	(7.3		)	(6.0		)
Foreign	(5.9		)	(3.9		)	(3.0		)
Deferred:
Federal	(8.5		)	21.8			5.0
State	(1.6		)	0.2			0.3
Foreign	0.4			1.7			0.8
Income tax (provision) benefit	$	(32.7	)	$	8.2		$	(8.8	)

Reconciliation of U.S. Statutory Tax Rate to Annual Effective Tax Rate

Reconciliation of the U.S. Statutory Tax Rate to Annual Effective Tax Rate

	Years Ended October 31,
	2019		2018		2017
U.S. statutory rate	21.0	%	23.3	%	35.0	%
State and local income taxes, net of federal tax benefit	5.9		6.9		5.5
Federal and state tax credits	(3.9	)	(7.8	)	(7.5	)
Impact of foreign operations	(1.0	)	1.3		(2.7	)
Changes in uncertain tax positions	(0.8	)	(6.7	)	(19.7	)
Incremental tax benefit from share-based compensation awards	(0.7	)	(3.9	)	(4.2	)
Tax credits for energy efficient government buildings	—		(3.2	)	(2.2	)
Impact from goodwill impairment	—		4.4		—
Transition tax on foreign earnings	(1.1	)	5.1		—
Remeasurement of U.S. deferred taxes	(0.3	)	(31.5	)	—
Nondeductible expenses	2.1		2.4		5.7
Other, net	(0.8	)	0.3		0.1
Effective tax rate	20.4	%	(9.4	)%	10.1	%

Schedule of Components of Deferred Tax Assets and Liabilities

Components of Deferred Tax Assets and Liabilities

	As of October 31,
(in millions)	2019			2018
Deferred tax assets attributable to:
Self-insurance claims (net of recoverables)	$	83.6		$	83.5
Deferred and other compensation	25.6			22.7
Accounts receivable allowances	5.6			6.5
Settlement liabilities	3.1			3.3
Other accruals	1.8			(0.3		)
Other comprehensive income	0.5			(5.7		)
State taxes	0.4			0.5
State net operating loss carryforwards	11.2			15.9
Federal net operating loss carryforwards	—			5.4
Tax credits	6.3			21.7
Unrecognized tax benefits	3.0			2.4
Other	—			1.7
Gross deferred tax assets	141.2			157.6
Valuation allowance	(8.4		)	(12.0		)
Total deferred tax assets	132.8			145.7
Deferred tax liabilities attributable to:
Property, plant and equipment	(4.8		)	(4.2		)
Goodwill and other acquired intangibles	(170.6		)	(179.2		)
Other	(5.2		)	—
Total deferred tax liabilities	(180.6		)	(183.4		)
Net deferred tax liabilities	$	(47.7	)	$	(37.8	)

Schedule of Changes to the Deferred Tax Asset Valuation Allowance

Changes to the Valuation Allowance

	Years Ended October 31,
(in millions)	2019			2018		2017
Valuation allowance at beginning of year	$	12.0		$	7.7	$	5.4
GCA acquisition	—			2.4		4.1
Other, net	(3.6		)	1.8		(1.8		)
Valuation allowance at end of year	$	8.4		$	12.0	$	7.7

Reconciliation of Total Unrecognized Tax Benefits

Reconciliation of Total Unrecognized Tax Benefits

	Years Ended October 31,
(in millions)	2019			2018			2017
Balance at beginning of year	$	35.8		$	53.4		$	57.2
Additions for tax positions related to the current year	—			0.2			—
Additions for tax positions related to prior years	3.6			—			16.4
Reductions for tax positions related to prior years	—			(9.0		)	(0.1		)
Reductions for lapse of statute of limitations	(3.9		)	(8.7		)	(19.7		)
Settlements	(0.3		)	(0.1		)	(0.3		)
Balance at end of year	$	35.3		$	35.8		$	53.4