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Income Taxes (Income Tax Provisions Computed using Statutory U.S. Federal Rate) (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2018 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Income tax at statutory rate |  | $ 49,807 | $ 29,347 | $ 43,823 |
Lower rates on foreign operations |  | (16,210) | (12,738) | (21,777) |
State income taxes |  | 3,072 | 5,825 | 3,648 |
Impact of Tax Cuts and Jobs Act of 2017 |  | 0 | 0 | 103,878 |
Loss on investment in subsidiary |  | (25,688) | 1,797 | (48,903) |
Gain on derivative |  | (23,252) | 0 | 0 |
Permanent non-deductible items |  | (236) | 469 | 5,976 |
Foreign tax provisions under GILTI |  | 6,502 | 3,231 | 0 |
Other |  | (353) | 4,947 | 1,462 |
(Benefit from) provision for income taxes |  | $ (6,358) | $ 32,878 | $ 88,107 |
Income tax at statutory rate | 21.00% | 21.00% | 21.00% | 28.10% | 35.00%
Lower rates on foreign operations |  | (6.80%) | (9.10%) | (13.90%) |
State income taxes |  | 1.30% | 4.20% | 2.30% |
Impact of Tax Cuts and Jobs Act of 2017 |  | 0.00% | 0.00% | 66.50% |
Loss on investment in subsidiary |  | (10.80%) | 1.30% | (31.30%) |
Gain on derivative |  | (9.80%) | 0.00% | 0.00% |
Permanent non-deductible items |  | (0.10%) | 0.30% | 3.80% |
Foreign tax provisions under GILTI |  | 2.70% | 2.30% | 0.00% |
Other |  | (0.10%) | 3.50% | 0.90% |
(Benefit from) provision for income taxes |  | (2.70%) | 23.50% | 56.40% |

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