2.2.0.25falsefalse0210 - Disclosure - Derivative Instrumentstruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) $Jan-01-2011_Mar-31-2011http://www.sec.gov/CIK0001442505duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2true0us-gaap_DerivativeInstrumentsAndHedgesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseDerivative Instruments [Abstract]3false0us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00  <div style="font-family: 'Times New Roman',Times,serif"> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>10. Derivative Instruments</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     The holders’ exchange rights contained in the exchangeable notes issued in December 2010, which we refer to as the Exchangeable Notes, constitute embedded derivative instruments that are required to be accounted for separately from the debt host instrument at fair value. As a result, upon the issuance of the Exchangeable Notes, we recognized exchange options, which we refer to as Exchange Options, as derivative liabilities. The Exchange Options are indexed to our Class A common stock, which we refer to as Class A Common Stock, have a notional amount of 103.0 million shares and mature in 2040. We do not apply hedge accounting to the Exchange Options. Therefore, gains and losses due to changes in fair value of the Exchange Options are reported in our condensed consolidated statements of operations. At March 31, 2011 and December 31, 2010, the Exchange Options’ estimated fair value was $194.7 million and $167.9 million, respectively, and was reported in other current liabilities on our condensed consolidated balance sheets. For the three months ended March 31, 2011, we recognized a loss of $26.8 million from the changes in the estimated fair value in loss on derivative instruments in our condensed consolidated statements of operations. See Note 11, Fair Value, for information regarding valuation of the Exchange Options. </div> </div>  <!-- Begin Block Tagged NotefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element can be used to disclose the entity's entire derivative instruments and hedging activities disclosure as a single block of text. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising there from, and the amounts of and methodologies and assumptions used in determining the amounts of such items.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 falsefalseDerivative Instruments12Derivative InstrumentsUnKnownUnKnownUnKnownUnKnownfalsetrue