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Long-Term Debt (Boyd Bank Credit Facility Narrative) (Details) (USD $)
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Dec. 31, 2012
Borgata
Bank Credit Facility
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Mar. 31, 2013
Parent
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Mar. 31, 2012
Parent
Notes Payable to Banks [Member]
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Mar. 31, 2013
Parent
Bank Credit Facility
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Dec. 31, 2012
Parent
Bank Credit Facility
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Mar. 31, 2013
Parent
Bank Credit Facility
Extended Revolving Facility
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Dec. 31, 2012
Parent
Bank Credit Facility
Extended Revolving Facility
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Mar. 31, 2013
Parent
Bank Credit Facility
Initial Term Loan
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Dec. 31, 2012
Parent
Bank Credit Facility
Initial Term Loan
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Mar. 31, 2013
Parent
Bank Credit Facility
Incremental Term Loan
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Dec. 31, 2012
Parent
Bank Credit Facility
Incremental Term Loan
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Mar. 31, 2013
Parent
Letter of Credit
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Mar. 31, 2013
Former Credit Facility
Parent
Bank Credit Facility
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Mar. 31, 2013
Former Credit Facility
Parent
Bank Credit Facility
Extended Revolving Facility
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Mar. 31, 2013
Former Credit Facility
Parent
Bank Credit Facility
Initial Term Loan
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Mar. 31, 2013
Former Credit Facility
Parent
Bank Credit Facility
Incremental Term Loan
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Dec. 31, 2012
Peninsula Gaming
Parent
Bank Credit Facility
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Line of Credit Facility [Line Items] | |||||||||||||||||
| Line of Credit Facility, Covenant Terms, Minimum Consolidated Interest Coverage Ratio Required | 2.00 | ||||||||||||||||
| Long-term debt reclassified to current debt | $ 10,900,000 | ||||||||||||||||
| Blended interest rate at period end | 4.90% | 4.20% | 5.70% | ||||||||||||||
| Amount outstanding, gross | 1,450,000,000 | ||||||||||||||||
| Amount outstanding | 1,437,695,000 | 1,466,635,000 | 660,000,000 | 660,000,000 | 443,750,000 | 450,000,000 | 328,125,000 | 332,500,000 | 8,500,000 | ||||||||
| Remaining borrowing capacity | 278,398,000 | 278,398,000 | 0 | 0 | |||||||||||||
| Extended Revolving Facility: | |||||||||||||||||
| Line of credit, maximum borrowing capacity | $ 1,810,000,000 | $ 960,000,000 | $ 500,000,000 | $ 350,000,000 |