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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Taxes [Line Items] |  |  |  |
Corporate income tax rate percent |  |  |  | 35.00%
Income tax benefits due to NOL carryback provision | $ 309,376 | $ (79,912) | $ (95,429) |
Accumulated undistributed earnings and profits | 160,487 |  |  |
One-time transition tax accumulated undistributed earnings and profits | 113,364 |  |  |
Valuation allowance against deferred assets – non-current | 203,606 | 60,359 |  |
Gross unrecognized tax benefits, including interest and penalties | 51,643 | 14,294 |  |
Unrecognized tax benefit that if recognized would impact effective tax rate | 51,643 | 14,294 |  |
Accrued for interest and penalties | $ 5,114 | $ 4,058 |  |
Foreign |  |  |  |
Income Taxes [Line Items] |  |  |  |
Tax credit carryforwards expiring year description | A majority of our foreign tax credit carryforwards expire in 2024 and 2027, with the remainder expiring in 2029. |  |  |
CARES Act |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax benefits due to NOL carryback provision | $ 187,515 |  |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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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