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v3.19.3

Income Taxes - Deferred tax (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2019 | Sep. 30, 2017
Deferred tax assets: |  |  |  |
Compensation and benefit accruals not currently deductible | $ 132.9 | $ 108.3 |  |
Net operating loss carryforwards | 228.2 | 252.4 |  |
Self insurance reserves | 12.9 | 13.5 |  |
Research and experimentation and other tax credits | 120.5 | 178.1 |  |
Pension liability | 105.1 | 88.2 |  |
Accrued liabilities | 125.4 | 63.4 |  |
Other | 28.8 | 27.8 |  |
Total deferred tax assets | 753.8 | 731.7 |  |
Deferred tax liabilities: |  |  |  |
Unearned revenue | (106.9) | (121.1) |  |
Depreciation and amortization | (78.5) | (135.9) |  |
Acquired intangible assets | (49.6) | (56.0) |  |
Investment in subsidiaries | (108.7) | (109.5) |  |
Total deferred tax liabilities | (343.7) | (422.5) |  |
Valuation allowance | (169.1) | (197.1) |  |
Net deferred tax assets | 241.0 | 112.1 |  |
Income Taxes, additional disclosures |  |  |  |
Remaining gross tax asset exclusive of tax liabilities realized | 584.7 |  |  |
Change in valuation allowance | 28.0 |  |  |
Change in valuation allowance for foreign tax credits | 38.1 |  |  |
Gross book-tax differences from non-U.S. subsidiaries | 1,800.0 |  |  |
Liability for unrecognized tax benefits, including potential interest and penalties, net of related tax benefit | 75.4 | 71.9 |  |
Unrecognized tax benefits | 62.4 | 60.0 |  | $ 102.1
Unrecognized tax benefits that would be included in the effective tax rate if recognized |  |  | $ 45.2 |
Canada |  |  |  |
Deferred tax liabilities: |  |  |  |
Valuation allowance | (6.0) |  |  |
Income Taxes, additional disclosures |  |  |  |
Change in valuation allowance |  | 13.1 |  |
United States |  |  |  |
Deferred tax liabilities: |  |  |  |
Valuation allowance |  | $ (38.1) |  |
California Franchise Tax Board | Enterprise Zone Tax Credits |  |  |  |
Income Taxes, additional disclosures |  |  |  |
Unused tax credits | 6.8 |  |  |
Federal |  |  |  |
Income Taxes, additional disclosures |  |  |  |
Net operating loss carryforwards | 654.2 |  |  |
Federal | Research and development |  |  |  |
Income Taxes, additional disclosures |  |  |  |
Unused tax credits | 77.6 |  |  |
State | Research and development |  |  |  |
Income Taxes, additional disclosures |  |  |  |
Unused tax credits | 40.3 |  |  |
Foreign |  |  |  |
Income Taxes, additional disclosures |  |  |  |
Net operating loss carryforwards | $ 945.8 |  |  |

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