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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Taxes [Line Items] |  |  |  |
Net tax expense |  | $ 29,300 |  |
Cumulative adjustments from adoption of income tax standard updates |  | (18,100) | $ (18,074) |
Increase in valuation allowance | $ 182,325 | 24,986 | 766,012 |
Tax credit carryovers | 1,582 | 1,497 |  |
Valuation allowance on deferred tax asset | 1,326,204 | 1,148,268 | 1,213,750 | $ 458,288
Cumulative undistributed earnings of foreign subsidiaries | 4,900,000 |  |  |
Liabilities related to uncertain tax position | 14,683 | 21,169 |  |
Unrecognized tax benefits, income tax penalties and interest accrued | 3,100 | 3,700 |  |
Assets offsetting unrecognized tax benefits | 24,100 | 26,100 |  |
Unrecognized tax benefits net of offsetting assets | (12,500) | (8,600) |  |
Unrecognized tax benefits | 11,639 | 17,548 | $ 19,742 | $ 21,438
Decrease in liability related to uncertain tax positions | 500 |  |  |
State and Local Jurisdiction |  |  |  |
Income Taxes [Line Items] |  |  |  |
Valuation allowance on deferred tax asset | 29,400 |  |  |
Domestic Country |  |  |  |
Income Taxes [Line Items] |  |  |  |
Tax credit carryovers | 1,600 |  |  |
Valuation allowance on deferred tax asset | 300 |  |  |
Net operating loss carryovers | 206,800 |  |  |
Operating loss carryover, valuation allowance | 51,700 |  |  |
Foreign Country |  |  |  |
Income Taxes [Line Items] |  |  |  |
Valuation allowance on deferred tax asset | 67,900 |  |  |
Net operating loss carryovers | 5,250,000 |  |  |
Operating loss carryover, valuation allowance | 5,200,000 |  |  |
Change in Estimate, Foreign Net Operating Loss |  |  |  |
Income Taxes [Line Items] |  |  |  |
Increase in valuation allowance |  | $ 749,800 |  |
2035 | Foreign Country |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryovers | 3,020,000 |  |  |
Indefinite Life | Foreign Country |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryovers | $ 1,970,000 |  |  |

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