Consolidating Condensed Financial Information - Consolidating Condensed Statement of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities	$ 3,525	$ 48,656
INVESTING ACTIVITIES:
Purchase of property and equipment, net	(29,824)	(20,345)
Reimbursement of capital expenditures from West Virginia regulatory authorities		3,676
Proceeds from sale of property and equipment		1,551
Decrease in other assets, net		177
Restricted cash	100
Net cash used in business combinations	(1,343,659)	(491)
Net cash used in investing activities	(1,373,383)	(15,432)
FINANCING ACTIVITIES:
Payments on capital leases	(210)	(136)
Debt issuance costs	(44,992)	(463)
Proceeds from issuance of 6% Senior Notes	375,000
Proceeds from exercise of stock options	2,898	1,005
Taxes paid related to net share settlement of equity awards	(8,993)	(1,178)
Net cash provided by (used in) financing activities	1,412,453	(74,397)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	42,595	(41,173)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	61,029	78,278
CASH AND CASH EQUIVALENTS, END OF PERIOD	103,624	37,105
Term Loan
FINANCING ACTIVITIES:
Principal payments on Term Loan	(1,062)	(2,125)
Retirement of Long-term Debt	(417,563)
New Term Loan
FINANCING ACTIVITIES:
Principal payments on Term Loan	(3,625)
Proceeds from issuance of New Term Loan	1,450,000
Revolving Credit Facility
FINANCING ACTIVITIES:
Borrowings under Revolving Credit Facility	41,000	24,000
Payments under Revolving Credit Facility	(29,000)	(95,500)
Retirement of Long-term Debt	(41,000)
New Revolving Credit Facility
FINANCING ACTIVITIES:
Borrowings under Revolving Credit Facility	148,953
Payments under Revolving Credit Facility	(58,953)
Reportable Legal Entities | Eldorado Resorts, Inc. (Parent Obligor)
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities	(82,703)	(10,006)
INVESTING ACTIVITIES:
Purchase of property and equipment, net	(3,273)	138
Decrease in other assets, net		(81)
Advances from (to) subsidiaries		87,495
Net cash used in business combinations	(1,343,659)	(491)
Net cash used in investing activities	(1,346,932)	87,061
FINANCING ACTIVITIES:
Debt issuance costs	(44,992)	(463)
Proceeds from issuance of 6% Senior Notes	375,000
Net proceeds from (payments to) related parties	26,440
Proceeds from exercise of stock options	2,898	1,005
Taxes paid related to net share settlement of equity awards	(8,993)	(1,178)
Net cash provided by (used in) financing activities	1,439,103	(74,261)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	9,468	2,794
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	812	657
CASH AND CASH EQUIVALENTS, END OF PERIOD	10,280	3,451
Reportable Legal Entities | Guarantor Subsidiaries
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities	79,645	64,029
INVESTING ACTIVITIES:
Purchase of property and equipment, net	(26,536)	(20,483)
Reimbursement of capital expenditures from West Virginia regulatory authorities		3,676
Proceeds from sale of property and equipment		1,551
Decrease in other assets, net		258
Restricted cash	109
Net cash used in investing activities	(26,427)	(14,998)
FINANCING ACTIVITIES:
Payments on capital leases	(169)	(136)
Net proceeds from (payments to) related parties	(24,495)	(92,862)
Net cash provided by (used in) financing activities	(24,664)	(92,998)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	28,554	(43,967)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	59,885	77,621
CASH AND CASH EQUIVALENTS, END OF PERIOD	88,439	33,654
Reportable Legal Entities | Non-Guarantor Subsidiaries
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities	6,583
INVESTING ACTIVITIES:
Purchase of property and equipment, net	(15)
Restricted cash	(9)
Net cash used in investing activities	(24)
FINANCING ACTIVITIES:
Payments on capital leases	(41)
Net proceeds from (payments to) related parties	(1,945)
Net cash provided by (used in) financing activities	(1,986)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	4,573
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	332
CASH AND CASH EQUIVALENTS, END OF PERIOD	4,905
Reportable Legal Entities | Term Loan | Eldorado Resorts, Inc. (Parent Obligor)
FINANCING ACTIVITIES:
Principal payments on Term Loan	(1,062)	(2,125)
Retirement of Long-term Debt	(417,563)
Reportable Legal Entities | New Term Loan | Eldorado Resorts, Inc. (Parent Obligor)
FINANCING ACTIVITIES:
Principal payments on Term Loan	(3,625)
Proceeds from issuance of New Term Loan	1,450,000
Reportable Legal Entities | Revolving Credit Facility | Eldorado Resorts, Inc. (Parent Obligor)
FINANCING ACTIVITIES:
Borrowings under Revolving Credit Facility	41,000	24,000
Payments under Revolving Credit Facility	(29,000)	(95,500)
Retirement of Long-term Debt	(41,000)
Reportable Legal Entities | New Revolving Credit Facility | Eldorado Resorts, Inc. (Parent Obligor)
FINANCING ACTIVITIES:
Borrowings under Revolving Credit Facility	148,953
Payments under Revolving Credit Facility	$ (58,953)
Consolidating and Eliminating Entries
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities		(5,367)
INVESTING ACTIVITIES:
Advances from (to) subsidiaries		(87,495)
Net cash used in investing activities		(87,495)
FINANCING ACTIVITIES:
Net proceeds from (payments to) related parties		92,862
Net cash provided by (used in) financing activities		$ 92,862