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Computed Amount and Differences in Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income Tax Disclosure [Abstract] |  |  |
Pretax income | $ 353,129 | $ 86,204 | $ 273,881
Computed amount at statutory rate of 35% | 123,595 | 30,171 | 95,858
State and local income tax (net of federal tax benefit) | 4,382 | 2,406 | 1,515
Taxes on non-U.S. earnings-net of foreign tax credits | (9,683) | 1,189 | (4,522)
Effect of flow-through entities | (7,267) | (7,846) | (6,922)
Asset impairments | 0 | 28,524 | 0
U.S. business tax credits | (1,516) | 0 | (917)
Domestic activities production deduction | (6,217) | (5,267) | (4,589)
Other | (5,380) | (603) | (399)
Total provision for income taxes | $ 97,914 | $ 48,574 | $ 80,024

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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