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INCOME TAXES - Reconciliation of Income Tax to Income Tax Benefit (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Amount |  |  |  |  |  |  |  |  |  |  |
Income tax benefit at statutory rates |  |  |  |  |  |  |  |  | $ 32,821 | $ 320,641 | $ 103,670
State income taxes, net of federal tax effect |  |  |  |  |  |  |  |  | 21,137 | 7,667 | 6,372
Foreign income taxes |  |  |  |  |  |  |  |  | (29,559) | (19,981) | (24,307)
Nondeductible items |  |  |  |  |  |  |  |  | (5,400) | (6,659) | (5,760)
Changes in valuation allowance and other estimates |  |  |  |  |  |  |  |  | (64,913) | (350,407) | (31,229)
U.S. tax reform |  |  |  |  |  |  |  |  | 0 | 510,064 | 0
Other, net |  |  |  |  |  |  |  |  | (437) | (3,919) | 885
Income tax benefit (expense) | $ 837 | $ (17,769) | $ (146,785) | $ 117,366 | $ 507,549 | $ (2,051) | $ (17,408) | $ (30,684) | $ (46,351) | $ 457,406 | $ 49,631
Percent |  |  |  |  |  |  |  |  |  |  |
Income tax benefit at statutory rates |  |  |  |  |  |  |  |  | 21.00% | 35.00% | 35.00%
State income taxes, net of federal tax effect |  |  |  |  |  |  |  |  | 13.50% | 0.80% | 2.20%
Foreign income taxes |  |  |  |  |  |  |  |  | (18.90%) | (2.20%) | (8.20%)
Nondeductible items |  |  |  |  |  |  |  |  | (3.50%) | (0.70%) | (1.90%)
Changes in valuation allowance and other estimates |  |  |  |  |  |  |  |  | (41.50%) | (38.20%) | (10.60%)
U.S. tax reform |  |  |  |  |  |  |  |  | (0.00%) | 55.60% | (0.00%)
Other, net |  |  |  |  |  |  |  |  | (0.30%) | (0.40%) | 0.30%
Income tax benefit (expense) |  |  |  |  |  |  |  |  | (29.70%) | 49.90% | 16.80%

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