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Fair Value Measurements (Fair Value Balance Sheet Long-Term Debt Grouping) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	May. 21, 2015	Dec. 31, 2014	Aug. 16, 2012	Nov. 10, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	$ 3,322,475
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal			$ 3,481,568
Fair Value, Measurements, Nonrecurring [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt			3,404,851
Fair Value, Measurements, Nonrecurring [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument			3,534,365
Parent Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	2,309,725		2,389,165
Long-term debt	2,277,299		2,344,983
Parent Company [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	2,277,299		2,344,983
Parent Company [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	2,348,120		2,416,873
Parent Company [Member] | Bank Credit Facility | Bank Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal			1,387,425
Long-term debt	1,197,277		1,369,176
Parent Company [Member] | Bank Credit Facility | Bank Credit Facility | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	1,209,725
Parent Company [Member] | Bank Credit Facility | Bank Credit Facility | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	1,197,277		1,369,176
Parent Company [Member] | Bank Credit Facility | Bank Credit Facility | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	1,202,870		$ 1,395,595
Parent Company [Member] | 9.125% Senior Notes Due 2018 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, stated interest rate			9.13%		9.125%
Outstanding principal			$ 500,000
Long-term debt			487,765
Parent Company [Member] | 9.125% Senior Notes Due 2018 | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	342,956		487,765
Parent Company [Member] | 9.125% Senior Notes Due 2018 | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	$ 372,750		517,500
Parent Company [Member] | Senior Notes Due 2023 [Member] | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, stated interest rate	6.875%	6.875%
Long-term debt	$ 737,066
Parent Company [Member] | Senior Notes Due 2023 [Member] | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	750,000
Parent Company [Member] | Senior Notes Due 2023 [Member] | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	737,066
Parent Company [Member] | Senior Notes Due 2023 [Member] | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	772,500
Parent Company [Member] | Holdco Note | Senior Subordinated Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt			139,968
Parent Company [Member] | Holdco Note | Senior Subordinated Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument			144,153
Parent Company [Member] | Holdco Note | Fixed Rate Debt | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	143,000
Consolidated, Excluding Borgata
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	3,322,475		3,481,568
Long-term debt	3,269,549		3,404,851
Consolidated, Excluding Borgata | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	3,269,549
Consolidated, Excluding Borgata | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	3,366,251
Peninsula
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	1,012,750		1,092,403
Long-term debt	992,250		1,059,868
Peninsula | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	992,250		1,059,868
Peninsula | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	1,018,131		1,117,492
Peninsula | Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal			3
Long-term debt			3
Peninsula | Bank Credit Facility | Bank Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal			742,400
Long-term debt	648,607		718,807
Peninsula | Bank Credit Facility | Bank Credit Facility | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	662,750
Peninsula | Bank Credit Facility | Bank Credit Facility | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	648,607		718,807
Peninsula | Bank Credit Facility | Bank Credit Facility | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	$ 661,131		754,364
Peninsula | Other | Fixed Rate Debt | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument			$ 3
Peninsula | 8.375% Senior Notes due 2018 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, stated interest rate	8.375%		8.38%	8.375%
Outstanding principal			$ 350,000
Long-term debt	$ 343,643		341,058
Peninsula | 8.375% Senior Notes due 2018 | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Outstanding principal	350,000
Peninsula | 8.375% Senior Notes due 2018 | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	343,643		341,058
Peninsula | 8.375% Senior Notes due 2018 | Senior Notes | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument	$ 357,000		$ 363,125

X

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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