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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2018
Income Tax Disclosure [Abstract] |
Summary Of Income (Loss) Before Income Taxes | Our income (loss) before income taxes consisted of the following:
| Year ended September 30,
| 2018 |  | 2017 |  | 2016
| (in thousands)
Domestic | $ | (114,591 | ) |  | $ | (140,150 | ) |  | $ | (156,166 | )
Foreign | 143,247 |  |  | 138,744 |  |  | 88,974 |
Total income (loss) before income taxes | $ | 28,656 |  |  | $ | (1,406 | ) |  | $ | (67,192 | )
Schedule Of Provision For (Benefit From) Income Taxes | Our (benefit) provision for income taxes consisted of the following:
| Year ended September 30,
| 2018 |  | 2017 |  | 2016
| (in thousands)
Current: |  |  |  |  |
Federal | $ | 3,009 |  |  | $ | 2,423 |  |  | $ | 2,417 |
State | 2,003 |  |  | 340 |  |  | 571 |
Foreign | 28,213 |  |  | 17,881 |  |  | 28,467 |
| 33,225 |  |  | 20,644 |  |  | 31,455 |
Deferred: |  |  |  |  |
Federal | (12,594 | ) |  | 4,911 |  |  | 965 |
State | (445 | ) |  | 877 |  |  | 515 |
Foreign | (43,517 | ) |  | (34,077 | ) |  | (45,662 | )
| (56,556 | ) |  | (28,289 | ) |  | (44,182 | )
Total provision (benefit) for income taxes | $ | (23,331 | ) |  | $ | (7,645 | ) |  | $ | (12,727 | )
Summary Of Federal Income Tax Rate And Effective Income Tax Rate | Taxes computed at the statutory federal income tax rates are reconciled to the provision (benefit) for income taxes as follows (in thousands):
| Year ended September 30,
| 2018 |  | 2017 |  | 2016
Statutory federal income tax rate | $ | 7,021 |  |  | 25 | % |  | $ | (492 | ) |  | (35 | )% |  | $ | (23,517 | ) |  | (35 | )%
Change in valuation allowance | (181,047 | ) |  | (632 | )% |  | 17,334 |  |  | 1,233 | % |  | 37,996 |  |  | 57 | %
Transition impact of U.S. Tax Act | 126,122 |  |  | 440 | % |  | — |  |  | — |  |  | — |  |  | — |
Federal rate change | 69,648 |  |  | 243 | % |  | — |  |  | — | % |  | — |  |  | — | %
State income taxes, net of federal tax benefit | 2,401 |  |  | 8 | % |  | 627 |  |  | 45 | % |  | (82 | ) |  | — | %
Federal research and development credits | (3,058 | ) |  | (11 | )% |  | (2,182 | ) |  | (155 | )% |  | (5,981 | ) |  | (9 | )%
Resolution of uncertain tax positions | (4,646 | ) |  | (16 | )% |  | (3,840 | ) |  | (273 | )% |  | — |  |  | — | %
Foreign rate differences | (38,743 | ) |  | (135 | )% |  | (27,932 | ) |  | (1,987 | )% |  | (27,513 | ) |  | (41 | )%
Foreign tax on U.S. provision | 2,736 |  |  | 10 | % |  | 2,737 |  |  | 195 | % |  | 1,987 |  |  | 3 | %
Excess tax benefits from restricted stock | (11,641 | ) |  | (41 | )% |  | — |  |  | — |  |  | — |  |  | — |
Audits and settlements | 2,352 |  |  | 8 | % |  | — |  |  | — |  |  | — |  |  | — |
U.S. permanent items | 5,408 |  |  | 19 | % |  | 6,030 |  |  | 429 | % |  | 2,886 |  |  | 4 | %
Other, net | 116 |  |  | 1 | % |  | 73 |  |  | 4 | % |  | 1,497 |  |  | 2 | %
Benefit for income taxes | $ | (23,331 | ) |  | (81 | )% |  | $ | (7,645 | ) |  | (544 | )% |  | $ | (12,727 | ) |  | (19 | )%
Schedule Of Deferred Tax Assets And Liabilities | The significant temporary differences that created deferred tax assets and liabilities are shown below:
| September 30,
| 2018 |  | 2017
| (in thousands)
Deferred tax assets: |  |  |
Net operating loss carryforwards | $ | 31,329 |  |  | $ | 143,793 |
Foreign tax credits | 2,201 |  |  | 21,099 |
Capitalized research and development expense | 20,999 |  |  | 13,044 |
Pension benefits | 12,296 |  |  | 12,107 |
Prepaid expenses | 30,614 |  |  | 9,250 |
Deferred revenue | 33,886 |  |  | 59,022 |
Stock-based compensation | 11,622 |  |  | 25,360 |
Other reserves not currently deductible | 13,588 |  |  | 16,905 |
Amortization of intangible assets | 96,841 |  |  | 78,351 |
Other tax credits | 55,760 |  |  | 42,652 |
Depreciation | 4,364 |  |  | 3,095 |
Capital loss carryforward | 33,024 |  |  | 33,535 |
Deferred interest | 13,057 |  |  | 11,666 |
Other | 1,152 |  |  | 6,599 |
Gross deferred tax assets | 360,733 |  |  | 476,478 |
Valuation allowance | (141,950 | ) |  | (279,683 | )
Total deferred tax assets | 218,783 |  |  | 196,795 |
Deferred tax liabilities: |  |  |
Acquired intangible assets not deductible | (41,139 | ) |  | (70,570 | )
Pension prepayments | (2,362 | ) |  | (2,093 | )
Deferred revenue | (6,978 | ) |  | (6,214 | )
U.S taxes on unremitted foreign earnings | — |  |  | (11,440 | )
Deferred income | (6,641 | ) |  | — |
Other | (1,686 | ) |  | (1,192 | )
Total deferred tax liabilities | (58,806 | ) |  | (91,509 | )
Net deferred tax assets | $ | 159,977 |  |  | $ | 105,286 |
Summary Of Valuation Allowance | The changes to the valuation allowance were primarily due to the following:
| Year ended September 30,
| 2018 |  | 2017 |  | 2016
| (in millions)
Valuation allowance beginning of year | $ | 279.7 |  |  | $ | 235.5 |  |  | $ | 198.2 |
Net release of valuation allowance (1) | (2.8 | ) |  | (9.1 | ) |  | (3.1 | )
Net increase (decrease) in deferred tax assets with a full valuation allowance (2) | (134.9 | ) |  | 53.3 |  |  | 39.8 |
Establish valuation allowance in foreign jurisdictions | — |  |  | — |  |  | 0.6 |
Valuation allowance end of year | $ | 142.0 |  |  | $ | 279.7 |  |  | $ | 235.5 |
(1) | In 2018, 2017 and 2016, this is attributable to the release in foreign jurisdictions.
(2) | This is primarily attributable to U.S. tax reform: the utilization of tax attributes used to offset the transition tax, the revaluation of the U.S. net deferred tax assets and liabilities, the ability to realize net operating losses from the reversal of existing deferred tax assets which can now be carried forward indefinitely and can therefore be netted against deferred tax liabilities for indefinite lived intangible.
Schedule Of Unrecognized Tax Benefit |
| Year ended September 30,
Unrecognized tax benefits | 2018 |  | 2017 |  | 2016
| (in millions)
Unrecognized tax benefit beginning of year | $ | 14.8 |  |  | $ | 15.5 |  |  | $ | 14.1 |
Tax positions related to current year: |  |  |  |  |
Additions | 1.5 |  |  | 0.9 |  |  | 1.0 |
Tax positions related to prior years: |  |  |  |  |
Additions | — |  |  | 1.0 |  |  | 0.4 |
Reductions | (4.7 | ) |  | (1.6 | ) |  | — |
Settlements | — |  |  | (1 | ) |  | — |
Statute expirations | (1.8 | ) |  | — |  |  | — |
Unrecognized tax benefit end of year | $ | 9.8 |  |  | $ | 14.8 |  |  | $ | 15.5 |
Summary Of Income Tax Examinations Years | As of September 30, 2018, we remained subject to examination in the following major tax jurisdictions for the tax years indicated:
Major Tax Jurisdiction |  | Open Years
United States |  | 2015 through 2018
Germany |  | 2011 through 2018
France |  | 2015 through 2018
Japan |  | 2013 through 2018
Ireland |  | 2014 through 2018

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