2.4.0.81040 - Disclosure - Income Taxestruefalsefalse1false falsefalseD2013Q2YTDhttp://www.sec.gov/CIK0000837173duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_IncomeTaxDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Income Taxes2false 2us-gaap_IncomeTaxDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;"> Note 4—Income Taxes         The Company estimates its annual effective tax rate based on projected financial income for the full year at the end of each interim reporting period unless projected financial income for the full year is close to break-even, in which case the annual effective tax rate could become volatile and could distort the income tax provision for an interim period. When this happens, the Company calculates the interim income tax provision using actual year-to-date financial results for certain jurisdictions. This method results in an income tax provision based solely on the year-to-date financial taxable income or loss for those jurisdictions. In both cases, the tax effect of unusual or infrequently occurring items, including effects of changes in tax laws or rates, are reported in the interim period in which they occur.         For the six months ended June 30, 2013, the income tax benefit was determined based on the annual effective tax rate method. The Company recognized an income tax benefit of $115.8 million for the six months ended June 30, 2013, compared to an income tax provision of $13.2 million for the six months ended June 30, 2012 as the Company incurred a pretax operating loss for the six months ended June 30, 2013 compared to pretax operating income for the same period in 2012. The 2013 and 2012 tax rates reflect the benefits of our Canadian and U.K. Operations which are taxed at statutory rates lower than the U.S. rate and the effects of additional tax losses related to foreign financing activities. The income tax provisions for the six months ended June 30, 2013 and 2012 also reflect a statutory depletion deduction from the Alabama mining operations. The current year provision for income taxes also includes a benefit of $13.7 million attributable to year-to-date foreign currency exchange rate fluctuations on foreign deferred tax liabilities. </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: 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=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 136, 172 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 44, 45, 46, 47, 48, 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Income TaxesfalseIncome TaxesUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.walterenergy.com/role/DisclosureIncomeTaxes12