Segment Reporting Segment Reporting - Adjusted EBITDA - By Segment (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company		$ (34)	$ (507)
Net loss attributable to noncontrolling interests		0	(1)
Income tax provision		13	47
Restructuring and support expenses and other		(184)	464
Interest expense		330	147
Depreciation and amortization		280	102
Other operating costs		66	(1)	[1]
Stock-based compensation expense	[2]	18	9
Other items (2)		29	15	[3]
Adjusted EBITDA		518	275
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company		(56)	(677)
Net loss attributable to noncontrolling interests			0
Income tax provision		13	47
Restructuring and support expenses and other		(180)	464
Interest expense		114	135
Depreciation and amortization		17	2
Other operating costs		32	(8)	[1]
Stock-based compensation expense		14	8
Other items (2)		27	13	[3]
Adjusted EBITDA		(19)	(16)
Intersegment Elimination
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company		0	0
Net loss attributable to noncontrolling interests			0
Income tax provision		0	0
Restructuring and support expenses and other		0	0
Interest expense		0	0
Depreciation and amortization		0	0
Other operating costs		0	0	[1]
Stock-based compensation expense		0	0
Other items (2)		0	0	[3]
Adjusted EBITDA		0	0
Las Vegas, NV [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company		72	147
Net loss attributable to noncontrolling interests			0
Income tax provision		0	0
Restructuring and support expenses and other		(2)	0
Interest expense		78	5
Depreciation and amortization		142	79
Other operating costs		28	6	[1]
Stock-based compensation expense		2	1
Other items (2)		1	1	[3]
Adjusted EBITDA		321	239
Other U.S. [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company		(50)	23
Net loss attributable to noncontrolling interests			(1)
Income tax provision		0	0
Restructuring and support expenses and other		(2)	0
Interest expense		138	7
Depreciation and amortization		121	21
Other operating costs		6	1	[1]
Stock-based compensation expense		2	0
Other items (2)		1	1	[3]
Adjusted EBITDA		$ 216	$ 52

[1] (1) Amounts primarily represent costs incurred in connection with costs associated with the development activities and reorganization activities, and/or recoveries associated with such items.

[2] As a result of the consolidation of CEOC LLC beginning on the Effective Date, $11 million of stock-based compensation expense was recorded for three months ended March 31, 2018 as compared to the three months ended March 31, 2017 which includes $1 million due to the CAC Merger.

[3] (2) Other items includes other add-backs and deductions to arrive at Adjusted EBITDA but not separately identified such as litigation awards and settlements, costs associated with CEOC’s restructuring and related litigation, severance and relocation costs, sign-on and retention bonuses, permit remediation costs, and business optimization expenses.