1.0.0.3 false Acquisition of Noncontrolling Interests false 1 $ false false Unit1 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 2 Acquisition of Noncontrolling Interests 0 btu_AcquisitionOfMinorityInterestsAbstract btu false na duration string Acquisition of Minority Interests [Abstract] false false false false false true false false false 1 false false 0 0 false false Acquisition of Minority Interests [Abstract] false 3 (3) Acquisition of Noncontrolling Interests 1 us-gaap_BusinessCombinationDisclosureTextBlock us-gaap true na duration string No definition available. false false false false false false false false false 1 false false 0 0 <div><!-- 2.0.3575.42361 --><div><!-- body --><p class="MsoBodyText2" style="margin: 0in; margin-bottom: 12.0pt; line-height: normal; font-size: 10.0pt; font-family: 'Times New Roman','serif'; font-weight: bold; margin-top: 0in; margin-right: 0in; margin-left: .25in; text-indent: -.25in;"><a name="_AUC32b13699aaae4c2aba96b81e3eb5839c"><font class="_mt">(3)<font style="font: 7.0pt 'Times New Roman';" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp; Acquisition of Noncontrolling Interests</font></font></a></p> <p class="MsoNormal" style="margin: 0in; margin-bottom: 12.0pt; font-size: 12.0pt; font-family: 'Times New Roman','serif'; text-align: justify; text-indent: .25in;"><font class="_mt"><font style="font-size: 10.0pt;" class="_mt">In the third quarter of 2008, the Company expanded its Australia coal presence by purchasing the remaining 15.4% share of the Millennium Mine in Queensland, Australia from the former noncontrolling shareholders for $106.9 million.<font class="_mt">&#160; The purchase price in excess of the noncontrolling interest book value was preliminarily allocated to land and coal interests in the amount of $55.1 million and deferred taxes in the amount of $47.4 million.<font class="_mt">&#160; During the third quarter of 2009, a purchase price allocation adjustment was recorded, which reallocated $3.5 million to deferred taxes and reduced land and coal interests by the same amount.<font class="_mt">&#160; <font class="_mt"><font style="font-size: 10.0pt;" class="_mt">The Millennium Mine was completed in 2007 as part of the Company&#8217;s expansion to serve seaborne metallurgical coal markets.</font></font></font></font></font></font></font></p> <!--EndFragment--><!-- body --></div></div> (3)&nbsp;&nbsp;&nbsp;&nbsp; Acquisition of Noncontrolling Interests In the third quarter of 2008, the Company expanded its Australia coal presence by false false No definition available. No authoritative reference available. false false 1 2 false UnKnown UnKnown UnKnown false true