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           Debt (Details) (USD $) 
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           Sep. 30, 2014 
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           Dec. 31, 2013 
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           Sep. 30, 2014
 
          7% Exchangeable Senior Subordinated Notes due 2014 [Member] 
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           Dec. 31, 2013
 
          7% Exchangeable Senior Subordinated Notes due 2014 [Member] 
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           Sep. 30, 2013
 
          7% Exchangeable Senior Subordinated Notes due 2014 [Member] 
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           Sep. 30, 2014
 
          4.25% Senior Notes Due 2020 [Member] 
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           Dec. 31, 2013
 
          4.25% Senior Notes Due 2020 [Member] 
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           Sep. 30, 2014
 
          5.875% Senior Notes due 2020 [Member] 
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           Dec. 31, 2013
 
          5.875% Senior Notes due 2020 [Member] 
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           Sep. 30, 2014
 
          5.75% Senior Notes due 2021 [Member] 
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           Dec. 31, 2013
 
          5.75% Senior Notes due 2021 [Member] 
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           Sep. 30, 2014
 
          4.625% Senior Notes Due 2023 [Member] 
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           Dec. 31, 2013
 
          4.625% Senior Notes Due 2023 [Member] 
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           Sep. 30, 2014
 
          6.00% Senior Note Due July 15, 2024 [Member] 
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           May 31, 2014
 
          6.00% Senior Note Due July 15, 2024 [Member] 
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           Dec. 31, 2013
 
          6.00% Senior Note Due July 15, 2024 [Member] 
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           Sep. 30, 2014
 
          5.25% Senior Notes due 2022 [Member] 
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           Dec. 31, 2013
 
          5.25% Senior Notes due 2022 [Member] 
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           Sep. 30, 2014
 
          Senior Secured Revolving Credit Facility [Member] 
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           Dec. 31, 2013
 
          Senior Secured Revolving Credit Facility [Member] 
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           Dec. 31, 2012
 
          Senior Secured Revolving Credit Facility [Member] 
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Debt | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Interest rate on instrument | 7.00% | [1],[2] | 7.00% | [1],[2] | 7.00% | 4.25% | [1],[3] | 4.25% | [1],[3] | 5.875% | [1],[3] | 5.875% | [1],[3] | 5.75% | [1],[3] | 5.75% | [1],[3] | 4.625% | [1],[3] | 4.625% | [1],[3] | 6.00% | [1],[3],[4] | 6.00% | 5.25% | [1],[3],[5] | 5.25% | [1],[3],[5] | ||||||||||||||||||||||
| Principal Amount | $ 502,364,000 | [1],[2] | $ 500,000,000 | [1],[3] | $ 500,000,000 | [1],[3] | $ 650,000,000 | [1],[3] | $ 650,000,000 | [1],[3] | $ 600,000,000 | [1],[3] | $ 600,000,000 | [1],[3] | $ 500,000,000 | [1],[3] | $ 500,000,000 | [1],[3] | $ 1,500,000,000 | [1],[3],[4] | $ 1,500,000,000 | [1],[3],[4] | $ 400,000,000 | [1],[3],[5] | $ 400,000,000 | [1],[3],[5] | ||||||||||||||||||||||||
| Credit facility, maximum borrowing capacity | 1,250,000,000 | [6] | 1,250,000,000 | [6] | 1,250,000,000 | |||||||||||||||||||||||||||||||||||||||||||||
| Debt carrying amount | 502,007,000 | [1],[2] | 500,481,000 | [1],[2] | 495,346,000 | [1],[3] | 494,809,000 | [1],[3] | 643,566,000 | [1],[3] | 642,914,000 | [1],[3] | 594,940,000 | [1],[3] | 594,499,000 | [1],[3] | 494,998,000 | [1],[3] | 494,653,000 | [1],[3] | 1,483,611,000 | [1],[3],[4] | 0 | [1],[3],[4] | 395,020,000 | [1],[3],[5] | 394,648,000 | [1],[3],[5] | 145,000,000 | [6] | 460,000,000 | [6] | ||||||||||||||||||
| Capital leases | 14,583,000 | 19,591,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Total Debt | 4,769,071,000 | 3,601,595,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Less: total current maturities non-related party | 498,433,000 | 496,815,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Less: total current maturities related party | 10,992,000 | 10,959,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Total long-term debt | $ 4,259,646,000 | $ 3,093,821,000 | ||||||||||||||||||||||||||||||||||||||||||||||||
          
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