2.2.0.25truefalse40401 - Disclosure - Fair Value Disclosure (Narrative) (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse3/31/2011 USD ($) USD ($) / shares $As_Of_3_31_2011http://www.sec.gov/CIK0001037949instant2011-03-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse12/31/2010 USD ($) USD ($) / shares $As_Of_12_31_2010http://www.sec.gov/CIK0001037949instant2010-12-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalsetruefalse{us-gaap_InvestmentTypeAxis} : Auction Rate Securities [Member] 1/1/2011 - 3/31/2011 Duration_1_1_2011_To_3_31_2011_us-gaap_InvestmentTypeAxis_us-gaap_AuctionRateSecuritiesMemberhttp://www.sec.gov/CIK0001037949duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseAuction Rate Securities [Member]us-gaap_InvestmentTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AuctionRateSecuritiesMemberus-gaap_InvestmentTypeAxisexplicitMember2false0us-gaap_NotesPayableus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1140800000011408falsetruefalsefalsefalse2truefalsefalse1158300000011583falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryIncluding the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance-sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 falsefalseCarrying value of long-term notes including the current portion reflecting original cost net of unamortized discounts and other3false0us-gaap_InvestmentsFairValueDisclosureSignificantAssumptionsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00<div> <div align="center"> <table style="width: 84%;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="84%"> <tr><td style="padding-bottom: 0in; padding-left: 0in; padding-right: 0in; background: #bcddf7; padding-top: 0in;" valign="bottom"> </td></tr></table></div> <p style="text-indent: 30.6pt; margin: 8.35pt 0in 0pt;"><font style="font-size: 10pt;" class="_mt">We determined the fair value of our auction rate securities using a probability-weighted discounted cash flow model that takes into consideration the weighted average of the following factors as of March 31, 2011 and December 31, 2010, respectively: </font></p> <p style="margin: 0in 0in 0pt;"><font style="font-size: 8.5pt;" class="_mt"> </font> </p> <table style="width: 100%; border-collapse: collapse;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td style="padding-bottom: 0in; padding-left: 0in; width: 9%; padding-right: 0in; padding-top: 0in;" width="9%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 3%; padding-right: 0in; padding-top: 0in;" valign="top" width="3%"> <p class="MsoNormal"><font style="font-size: 10pt;" class="_mt">•</font></p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 1%; padding-right: 0in; padding-top: 0in;" valign="top" width="1%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; padding-right: 0in; padding-top: 0in;" valign="top"> <p><font style="font-size: 10pt;" class="_mt">coupon rate of 5.49% and 5.44%; </font></p></td></tr></table> <p style="margin: 0in 0in 0pt;"><font style="font-size: 8.5pt;" class="_mt"> </font> </p> <table style="width: 100%; border-collapse: collapse;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td style="padding-bottom: 0in; padding-left: 0in; width: 9%; padding-right: 0in; padding-top: 0in;" width="9%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 3%; padding-right: 0in; padding-top: 0in;" valign="top" width="3%"> <p class="MsoNormal"><font style="font-size: 10pt;" class="_mt">•</font></p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 1%; padding-right: 0in; padding-top: 0in;" valign="top" width="1%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; padding-right: 0in; padding-top: 0in;" valign="top"> <p><font style="font-size: 10pt;" class="_mt">probability that we will be able to sell the securities in an auction or that the securities will be redeemed early of 75.43% and 75.23%; </font></p></td></tr></table> <p style="margin: 0in 0in 0pt;"><font style="font-size: 8.5pt;" class="_mt"> </font> </p> <table style="width: 100%; border-collapse: collapse;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td style="padding-bottom: 0in; padding-left: 0in; width: 9%; padding-right: 0in; padding-top: 0in;" width="9%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 3%; padding-right: 0in; padding-top: 0in;" valign="top" width="3%"> <p class="MsoNormal"><font style="font-size: 10pt;" class="_mt">•</font></p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 1%; padding-right: 0in; padding-top: 0in;" valign="top" width="1%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; padding-right: 0in; padding-top: 0in;" valign="top"> <p><font style="font-size: 10pt;" class="_mt">probability that a default will occur of 20.72% and 20.98% with a related recovery rate of 55.00% for both periods; and </font></p></td></tr></table> <p style="margin: 0in 0in 0pt;"><font style="font-size: 8.5pt;" class="_mt"> </font> </p> <table style="width: 100%; border-collapse: collapse;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td style="padding-bottom: 0in; padding-left: 0in; width: 9%; padding-right: 0in; padding-top: 0in;" width="9%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 3%; padding-right: 0in; padding-top: 0in;" valign="top" width="3%"> <p class="MsoNormal"><font style="font-size: 10pt;" class="_mt">•</font></p></td> <td style="padding-bottom: 0in; padding-left: 0in; width: 1%; padding-right: 0in; padding-top: 0in;" valign="top" width="1%"> <p class="MsoNormal"> </p></td> <td style="padding-bottom: 0in; padding-left: 0in; padding-right: 0in; padding-top: 0in;" valign="top"> <p><font style="font-size: 10pt;" class="_mt">discount rate of 7.88% and 7.81%. </font></p></td></tr></table></div>We determined the fair value of our auction rate securities using a probability-weighted discounted cash flow model that takes into consideration the weightedfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents the significant assumptions used by management to estimate the fair value as of the balance sheet date of the financial instrument (as defined), including financial assets and financial liabilities (collectively, as defined).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 falsefalseThe fair value of financial instruments, methodology and assumptions32Fair Value Disclosure (Narrative) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue