|
Fair Value of Financial Instruments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Debt instrument, carrying amount | $ 8,433,603 | $ 8,581,121 |
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Senior Secured Credit Facility
|
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Debt instrument, carrying amount | 5,395,825 | |
| Debt instrument, fair value | 5,451,700 | |
|
Senior Notes
|
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Debt instrument, carrying amount | 2,800,000 | |
| Debt instrument, fair value | $ 2,911,800 |