XML 166 R82.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements - Estimated Fair Value and Carrying Value of Senior Notes (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Carrying value $ 4,301,083 $ 2,814,176
Senior Floating Rate Notes due 2014
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value   339,381
Carrying value 0 350,000
9.875% Senior Notes due 2016
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value   396,568 [1]
Carrying value 356,657 [1] 354,579 [1]
8.0% Senior Notes due 2018
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value   765,000
Carrying value 750,000 750,000
8.75% Senior Notes due 2020
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value   475,875 [2]
Carrying value 444,127 [2] 443,568 [2]
7.5% Senior Notes due 2021
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value   909,000 [3]
Carrying value 1,179,328 [3] 900,000 [3]
8.125% Senior Notes due 2022
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value   0
Carrying value 750,000 0
7.5% Senior Notes due 2023
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value   0 [4]
Carrying value 820,971 [4] 0 [4]
Fair Value Measurements Level 2 | Senior Floating Rate Notes due 2014
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value 0  
Fair Value Measurements Level 2 | 9.875% Senior Notes due 2016
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value 392,913 [1]  
Fair Value Measurements Level 2 | 8.0% Senior Notes due 2018
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value 790,313  
Fair Value Measurements Level 2 | 8.75% Senior Notes due 2020
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value 490,500 [2]  
Fair Value Measurements Level 2 | 7.5% Senior Notes due 2021
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value 1,257,250 [3]  
Fair Value Measurements Level 2 | 8.125% Senior Notes due 2022
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value 823,125  
Fair Value Measurements Level 2 | 7.5% Senior Notes due 2023
    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Fair value $ 882,750 [4]  
[1] Carrying value is net of $8,843 and $10,921 discount at December 31, 2012 and 2011, respectively.
[2] Carrying value is net of $5,873 and $6,432 discount at December 31, 2012 and 2011, respectively.
[3] Carrying value includes a premium of $4,328 at December 31, 2012 applicable to notes issued in August 2012.
[4] Carrying value is net of $4,029 discount at December 31, 2012.