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Income Taxes (Tables) | 12 Months Ended
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Oct. 31, 2020
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) | 2020 |  | 2019 |  | 2018
United States | $ | 45.2 |  |  | $ | 137.1 |  |  | $ | 94.8 |
Foreign | 8.1 |  |  | 23.1 |  |  | (7.1) |
Income from continuing operations before income taxes | $ | 53.3 |  |  | $ | 160.2 |  |  | $ | 87.7 |
Schedule of Components of Income Tax (Provision) Benefit | Components of Income Tax (Provision) Benefit
| Years Ended October 31,
(in millions) | 2020 |  | 2019 |  | 2018
Current: |  |  |  |  |
Federal | $ | (59.3) |  |  | $ | (6.4) |  |  | $ | (4.3) |
State | (28.6) |  |  | (10.7) |  |  | (7.3) |
Foreign | (1.7) |  |  | (5.9) |  |  | (3.9) |
Deferred: |  |  |  |  |
Federal | 23.2 |  |  | (8.5) |  |  | 21.8 |
State | 12.5 |  |  | (1.6) |  |  | 0.2 |
Foreign | 0.9 |  |  | 0.4 |  |  | 1.7 |
Income tax (provision) benefit | $ | (53.1) |  |  | $ | (32.7) |  |  | $ | 8.2 |
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,
| 2020 |  | 2019 |  | 2018
U.S. statutory rate | 21.0 | % |  | 21.0 | % |  | 23.3 | %
State and local income taxes, net of federal tax benefit | (0.6) |  |  | 5.9 |  |  | 6.9 |
Federal and state tax credits | (4.7) |  |  | (3.9) |  |  | (7.8) |
Impact of foreign operations | 1.3 |  |  | (1.0) |  |  | 1.3 |
Changes in uncertain tax positions | (2.0) |  |  | (0.8) |  |  | (6.7) |
Incremental tax benefit from share-based compensation awards | (1.6) |  |  | (0.7) |  |  | (3.9) |
Energy efficiency incentives | (3.8) |  |  | — |  |  | (3.2) |
Impact from goodwill impairment | 81.7 |  |  | — |  |  | 4.4 |
Transition tax on foreign earnings | — |  |  | (1.1) |  |  | 5.1 |
Remeasurement of U.S. deferred taxes | — |  |  | (0.3) |  |  | (31.5) |
Nondeductible expenses | 4.4 |  |  | 2.1 |  |  | 2.4 |
Other, net | 3.9 |  |  | (0.8) |  |  | 0.3 |
Effective tax rate | 99.6 | % |  | 20.4 | % |  | (9.4) | %
Schedule of Components of Deferred Tax Assets and Liabilities | Components of Deferred Tax Assets and Liabilities
| As of October 31,
(in millions) | 2020 |  | 2019
Deferred tax assets attributable to: |  |  |
Self-insurance claims (net of recoverables) | $ | 74.7 |  |  | $ | 83.6 |
Deferred and other compensation | 28.6 |  |  | 25.6 |
Accounts receivable allowances | 8.8 |  |  | 5.6 |
Settlement liabilities | 5.0 |  |  | 3.1 |
Other accruals | 1.5 |  |  | 1.8 |
Other comprehensive income | 2.7 |  |  | 0.5 |
State taxes | 1.4 |  |  | 0.4 |
State net operating loss carryforwards | 5.9 |  |  | 11.2 |
Tax credits | 3.7 |  |  | 6.3 |
Unrecognized tax benefits | 3.2 |  |  | 3.0 |
Deferred payroll taxes | 26.9 |  |  | — |
Operating lease liabilities | 38.2 |  |  | — |
Gross deferred tax assets | 200.6 |  |  | 141.2 |
Valuation allowance | (4.1) |  |  | (8.4) |
Total deferred tax assets | 196.5 |  |  | 132.8 |
Deferred tax liabilities attributable to: |  |  |
Property, plant and equipment | (1.2) |  |  | (4.8) |
Goodwill and other acquired intangibles | (159.4) |  |  | (170.6) |
Right-of-use assets | (38.2) |  |  | — |
Other | (8.5) |  |  | (5.2) |
Total deferred tax liabilities | (207.3) |  |  | (180.6) |
Net deferred tax liabilities | $ | (10.8) |  |  | $ | (47.7) |
Schedule of Changes to the Deferred Tax Asset Valuation Allowance | Changes to the Valuation Allowance
| Years Ended October 31,
(in millions) | 2020 |  | 2019 |  | 2018
Valuation allowance at beginning of year | $ | 8.4 |  |  | $ | 12.0 |  |  | $ | 7.7 |
GCA acquisition | — |  |  | — |  |  | 2.4 |
Other, net | (4.3) |  |  | (3.6) |  |  | 1.8 |
Valuation allowance at end of year | $ | 4.1 |  |  | $ | 8.4 |  |  | $ | 12.0 |
Reconciliation of Total Unrecognized Tax Benefits | Reconciliation of Total Unrecognized Tax Benefits
| Years Ended October 31,
(in millions) | 2020 |  | 2019 |  | 2018
Balance at beginning of year | $ | 35.3 |  |  | $ | 35.8 |  |  | $ | 53.4 |
Additions for tax positions related to the current year | 2.1 |  |  | — |  |  | 0.2 |
Additions for tax positions related to prior years | 1.6 |  |  | 3.6 |  |  | — |
Reductions for tax positions related to prior years | — |  |  | — |  |  | (9.0) |
Reductions for lapse of statute of limitations | (3.0) |  |  | (3.9) |  |  | (8.7) |
Settlements | (0.5) |  |  | (0.3) |  |  | (0.1) |
Balance at end of year | $ | 35.5 |  |  | $ | 35.3 |  |  | $ | 35.8 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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