Consolidating Condensed Financial Information - Consolidating Condensed Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues:
Net revenues	$ 635,823	$ 440,192
Operating expenses:
Marketing and promotions	32,301	21,301
General and administrative	119,888	74,202
Corporate	16,754	11,569
Impairment charges	958	9,815
Depreciation and amortization	57,757	31,534
Total operating expenses	533,248	382,659
Gain (Loss) on sale or disposal of property and equipment	22,318	(706)
Transaction expenses	(1,894)	(2,548)
Income (loss) from unconsolidated affiliates	605	(85)
Operating (loss) income	123,604	54,194
Interest expense, net	(73,510)	(31,251)
Unrealized loss on restricted investments	(1,460)
Income before income taxes	48,634	22,943
Income tax benefit (provision)	(10,405)	(2,088)
Net income	38,229	20,855
Gaming and Pari-mutuel Commissions
Revenues:
Net revenues	470,851	343,528
Operating expenses:
Operating expenses	210,306	169,551
Non-gaming
Revenues:
Net revenues	164,972	96,664
Operating expenses:
Operating expenses	95,284	64,687
Reportable Legal Entities | Eldorado Resorts, Inc. (Parent Obligor)
Revenues:
Net revenues	1,397
Operating expenses:
Corporate	16,141	10,294
Management fee	(4,735)	(5,137)
Depreciation and amortization	1,150	772
Total operating expenses	12,556	5,929
Gain (Loss) on sale or disposal of property and equipment	409
Transaction expenses	(1,227)	(2,118)
Income (loss) from unconsolidated affiliates	655
Operating (loss) income	(11,322)	(8,047)
Interest expense, net	(37,432)	(24,432)
Unrealized loss on restricted investments	(1,460)
Subsidiary income (loss)	72,255	43,305
Income before income taxes	22,041	10,826
Income tax benefit (provision)	16,188	10,029
Net income	38,229	20,855
Reportable Legal Entities | Guarantor Subsidiaries
Revenues:
Net revenues	627,943	429,816
Operating expenses:
Marketing and promotions	32,053	20,835
General and administrative	118,552	72,427
Corporate	529	322
Impairment charges	958	9,815
Management fee	4,735	5,137
Depreciation and amortization	56,607	30,601
Total operating expenses	515,460	367,415
Gain (Loss) on sale or disposal of property and equipment	21,396	(706)
Transaction expenses	(475)	(430)
Income (loss) from unconsolidated affiliates	(50)	(85)
Operating (loss) income	133,354	61,180
Interest expense, net	(35,834)	(6,286)
Income before income taxes	97,520	54,894
Income tax benefit (provision)	(26,265)	(12,303)
Net income	71,255	42,591
Reportable Legal Entities | Non-Guarantor Subsidiaries
Revenues:
Net revenues	6,483	10,376
Operating expenses:
Marketing and promotions	248	466
General and administrative	1,336	1,775
Corporate	84	953
Depreciation and amortization		161
Total operating expenses	5,232	9,315
Gain (Loss) on sale or disposal of property and equipment	513
Transaction expenses	(192)
Operating (loss) income	1,572	1,061
Interest expense, net	(244)	(533)
Income before income taxes	1,328	528
Income tax benefit (provision)	(328)	186
Net income	1,000	714
Reportable Legal Entities | Gaming and Pari-mutuel Commissions | Guarantor Subsidiaries
Revenues:
Net revenues	466,441	335,793
Operating expenses:
Operating expenses	207,142	164,303
Reportable Legal Entities | Gaming and Pari-mutuel Commissions | Non-Guarantor Subsidiaries
Revenues:
Net revenues	4,410	7,735
Operating expenses:
Operating expenses	3,164	5,248
Reportable Legal Entities | Non-gaming | Eldorado Resorts, Inc. (Parent Obligor)
Revenues:
Net revenues	1,397
Reportable Legal Entities | Non-gaming | Guarantor Subsidiaries
Revenues:
Net revenues	161,502	94,023
Operating expenses:
Operating expenses	94,884	63,975
Reportable Legal Entities | Non-gaming | Non-Guarantor Subsidiaries
Revenues:
Net revenues	2,073	2,641
Operating expenses:
Operating expenses	400	712
Consolidating and Eliminating Entries
Operating expenses:
Subsidiary income (loss)	(72,255)	(43,305)
Income before income taxes	(72,255)	(43,305)
Net income	$ (72,255)	$ (43,305)