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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 Tax Disclosure [Line Items] |  |  |  |
Federal statutory tax rate | 21.00% | 21.00% | 21.00% | 21.00%
Decrease in effective tax rate on continuing operations | (23.16%) |  |  |
Provision for income taxes | (0.06%) | 23.10% | 23.17% |
Net tax benefit | $ 490 | $ (411,897) | $ (748,307) |
CARES Act NOL carryback | (5.77%) |  |  |
Tax loss on investment in foreign joint venture | (22.73%) |  |  |
State income taxes, net of federal income tax benefit | (3.36%) | 3.16% | 2.52% |
Deferred tax assets write-off |  |  | $ 21,300 |
Deferred tax assets write-off, effective tax reconciliation impact |  |  | 0.66% |
Non-current deferred tax liabilities included in deferred credits and other liabilities | $ 596,439 | $ 430,971 |  |
Current federal and state income taxes receivable | 456,100 | 240,800 |  |
Net federal, state and foreign income taxes paid (refund received) | 50,300 | 525,200 | $ 561,100 |
Unrecognized tax benefits | 47,965 | 50,920 | 48,605 | $ 48,845
Amount of unrecognized tax benefits affects effective tax rate | 47,300 | 50,200 |  |
Estimate of possible decrease in gross uncertain tax positions, exclusive of interest, as a result of the expiration of the statute of limitations | 7,300 |  |  |
Expense (benefit) for interest and penalties | 100 | 700 | $ (4,000) |
Accrued interest and penalties related to uncertain tax positions | 12,000 | 11,900 |  |
State and Local Jurisdiction [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
State NOL carryforwards | $ 1,410,000 | 681,800 |  |
State and Local Jurisdiction [Member] | Maximum [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Unused NOL carryforward expiration year | 2040 |  |  |
State and Local Jurisdiction [Member] | Minimum [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Unused NOL carryforward expiration year | 2021 |  |  |
Foreign Country [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Foreign NOL carryforwards | $ 142,300 | $ 149,800 |  |
Foreign Country [Member] | Maximum [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Unused NOL carryforward expiration year | 2040 |  |  |
Foreign Country [Member] | Minimum [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Unused NOL carryforward expiration year | 2021 |  |  |
CARES Act [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Federal statutory tax rate | 35.00% |  |  |
Tax credits | $ (48,200) |  |  |
CARES Act NOL carryback | (5.77%) |  |  |
Percentage of impairment | 11.20% |  |  |
Impairments | $ 445,600 |  |  |
CARES Act [Member] | State Tax Credits [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Provision for income taxes | (5.41%) |  |  |
Net tax benefit | $ 45,200 |  |  |
CARES Act [Member] | Loss on Foreign Joint Venture [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Provision for income taxes |  | (24.16%) |  |
Net tax benefit |  | $ 201,900 |  |
Tax loss on investment in foreign joint venture | (22.73%) |  |  |
State income taxes, net of federal income tax benefit | (1.43%) |  |  |

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