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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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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
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |  |  |  |  |  |  |  |  |
Federal tax computed at U.S. statutory income tax rate |  |  |  |  |  |  |  |  | $ 143,251 | $ 224,384 | $ 210,040
Enactment of the 2017 Tax Act |  |  |  |  | $ 550,000 |  |  |  | (6,059) | 550,000 |
Foreign currency exchange impact on distributed earnings |  |  |  |  |  |  |  |  | 7,495 |  |
GILTI, net of foreign tax credits |  |  |  |  |  |  |  |  | 13,727 |  |
Settlement of tax audits |  |  |  |  |  |  |  |  |  | 706 | 345
State income tax, net of federal income tax benefit |  |  |  |  |  |  |  |  | 2,910 | 1,289 | 2,008
Net effect of foreign operations |  |  |  |  |  |  |  |  | (66,092) | (134,117) | (133,518)
Effect of stock-based compensation |  |  |  |  |  |  |  |  | (9,089) | (19,566) |
Other, net |  |  |  |  |  |  |  |  | 2,209 | (1,910) | (264)
Provision for income taxes | $ 12,654 | $ 28,216 | $ 18,884 | $ 28,598 | $ 578,910 | $ 17,696 | $ 16,250 | $ 7,930 | $ 88,352 | $ 620,786 | $ 78,611

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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