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v3.21.2

Income Taxes - Deferred tax (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Deferred tax assets: |  |  |
Compensation and benefit accruals not currently deductible | $ 130.0 | $ 119.4 |
Net operating loss carryforwards | 169.8 | 173.2 |
Self-insurance reserves | 12.3 | 17.6 |
Research and experimentation and other tax credits | 117.2 | 112.9 |
Pension liability | 87.7 | 95.1 |
Accrued liabilities | 284.7 | 307.6 |
Capital loss carryforward | 62.0 | 104.8 |
Other | 37.3 | 26.0 |
Total deferred tax assets | 901.0 | 956.6 |
Deferred tax liabilities: |  |  |
Unearned revenue | (19.8) | (40.3) |
Depreciation and amortization | (116.5) | (106.7) |
Acquired intangible assets | (19.4) | (24.5) |
Investment in subsidiaries | (13.4) | (10.9) |
Right of use assets | (145.6) | (164.9) |
Contingent consideration | (33.8) | (33.6) |
Total deferred tax liabilities | (348.5) | (380.9) |
Valuation allowance | 197.7 | 217.5 |
Net deferred tax assets | 354.8 | 358.2 |
Income Taxes, additional disclosures |  |  |
Remaining gross tax asset exclusive of tax liabilities realized | 703.3 |  |
Change in valuation allowance | 19.8 |  |
Valuation allowance related to capital losses. | 49.5 |  |
Change in valuation allowance for foreign tax credits | 29.6 |  |
Gross book-tax differences from non-U.S. subsidiaries | 1,500.0 |  |
Liability for unrecognized tax benefits, including potential interest and penalties, net of related tax benefit | 62.8 | 65.8 |
Unrecognized tax benefits | 46.4 | 47.1 | $ 55.7
Unrecognized tax benefits that would be included in the effective tax rate if recognized | 40.1 |  |
Capital loss carryforwards | 184.1 | 355.7 |
Canada |  |  |
Deferred tax liabilities: |  |  |
Valuation allowance |  | 31.7 |
United States |  |  |
Deferred tax liabilities: |  |  |
Valuation allowance |  |  | $ 38.1
California Franchise Tax Board | Enterprise Zone Tax Credits |  |  |
Income Taxes, additional disclosures |  |  |
Unused tax credits | 18.1 |  |
Federal |  |  |
Income Taxes, additional disclosures |  |  |
Liability for unrecognized tax benefits, including potential interest and penalties, net of related tax benefit | 46.4 | 47.1 |
Federal | Research and development |  |  |
Income Taxes, additional disclosures |  |  |
Unused tax credits | 75.7 |  |
State |  |  |
Income Taxes, additional disclosures |  |  |
Net operating loss carryforwards | 667.0 |  |
State | Research and development |  |  |
Income Taxes, additional disclosures |  |  |
Unused tax credits | $ 23.4 |  |
Foreign |  |  |
Income Taxes, additional disclosures |  |  |
Net operating loss carryforwards |  | $ 710.2 |

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