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Condensed Consolidating Financial Information - Schedule of Condensed Cash Flow Revisions for Prior Periods (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]      
Net cash (used in) provided by operating activities $ 868,630 $ 783,160 $ 458,954
Net cash provided by (used in) financing activities (1,434,089) 1,874,870 645,193
Parent
      
Condensed Financial Statements, Captions [Line Items]      
Net cash (used in) provided by operating activities (239,026) 285,567 702,369
Net cash provided by (used in) financing activities 744,303 435,250 (499,795)
Parent | Condensed Cash Flow Revision
      
Condensed Financial Statements, Captions [Line Items]      
Net cash (used in) provided by operating activities   945,448 288,415
Net cash provided by (used in) financing activities   (945,448) (288,415)
Guarantors
      
Condensed Financial Statements, Captions [Line Items]      
Net cash (used in) provided by operating activities 852,026 264,717 (221,992)
Net cash provided by (used in) financing activities (2,011,552) 774,581 173,163
Guarantors | Condensed Cash Flow Revision
      
Condensed Financial Statements, Captions [Line Items]      
Net cash (used in) provided by operating activities   (809,099) (172,927)
Net cash provided by (used in) financing activities   809,099 172,927
Non-Guarantors
      
Condensed Financial Statements, Captions [Line Items]      
Net cash (used in) provided by operating activities 254,723 162,281 (9,005)
Net cash provided by (used in) financing activities (275,764) 462,684 926,853
Non-Guarantors | Condensed Cash Flow Revision
      
Condensed Financial Statements, Captions [Line Items]      
Net cash (used in) provided by operating activities   (136,349) (115,488)
Net cash provided by (used in) financing activities   $ 136,349 $ 115,488