v2.4.0.8

Income Taxes (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Change in unrecognized tax benefits |  |  |
Balance as of January 1 | $ 83,950,000 | $ 68,848,000 | $ 81,174,000
Additions based on tax positions related to the current year | 145,000 | 922,000 | 1,850,000
Additions for tax positions of prior years | 3,360,000 | 16,372,000 | 11,748,000
Reductions for tax positions of prior years | (30,320,000) | (1,174,000) | (11,082,000)
Settlements | (9,583,000) | (1,018,000) | (14,842,000)
Balance as of December 31 | 47,552,000 | 83,950,000 | 68,848,000
Reductions for tax positions for prior years related to settlements in Mexico, Canada and Algeria | 21,600,000 |  |
Reductions for tax positions for prior years due to expiration of statutes | 8,700,000 |  |
Interest and penalties on unrecognized tax benefits | 20,600,000 | 42,800,000 | 28,200,000
Liability related to unrecognized tax benefit for accrued interest and penalties | 5,200,000 | 2,700,000 | 4,600,000
Mexico Audit Assessment |  |  |
Change in unrecognized tax benefits |  |  |
Addition to unrecognized tax benefits | $ 10,400,000 |  |

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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