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Long-Term Debt (Boyd Bank Credit Facility Availability) (Details) (Parent, Bank Credit Facility, USD $)
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Dec. 31, 2012
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Dec. 03, 2010
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Dec. 31, 2012
Extended Revolving Facility
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Dec. 31, 2012
Initial Term Loan
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Dec. 31, 2012
Incremental Term Loan
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Dec. 31, 2012
Former Credit Facility
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Dec. 02, 2010
Former Credit Facility
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Dec. 31, 2012
Former Credit Facility
Extended Revolving Facility
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Dec. 31, 2012
Former Credit Facility
Initial Term Loan
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Dec. 31, 2012
Former Credit Facility
Incremental Term Loan
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Dec. 31, 2012
Amended Credit Facility
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Dec. 31, 2012
Amended Credit Facility
Extended Revolving Facility
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Dec. 31, 2012
Amended Credit Facility
Initial Term Loan
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Dec. 31, 2012
Amended Credit Facility
Incremental Term Loan
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| Line of Credit Facility [Line Items] | ||||||||||||||
| Commitment | $ 1,500,000,000 | $ 1,460,000,000 | $ 3,000,000,000 | $ 960,000,000 | $ 500,000,000 | $ 0 | $ 1,810,000,000 | $ 960,000,000 | $ 500,000,000 | $ 350,000,000 | ||||
| Remaining Availability | $ 253,105,000 | $ 253,105,000 | $ 0 | $ 0 |