Segment Reporting - Adjusted EBITDA (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2019		Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars		$ (315)		$ 29	$ (532)		$ (5)
Net Income (Loss) Attributable to Noncontrolling Interest		0		0	(1)		0
Income tax benefit (1)	[1],[2]	(60)		(36)	(89)		(23)
Other income/(loss)	[3],[4]	301		(45)	439		(229)
Interest expense		343		334	692		664
Depreciation and amortization		241		268	488		548
Other Asset Impairment Charges		50		0	50		0
Other operating costs	[5]	24		33	53		99
Stock-based compensation expense		22		20	43		38
Other items (4)	[6]	25		20	50		49
Adjusted EBITDA		631		623	1,193		1,141
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars		(515)		(126)	(849)		(182)
Net Income (Loss) Attributable to Noncontrolling Interest		(1)		(1)	(1)		(1)
Income tax benefit (1)	[1],[2]	(60)		(36)	(89)		(23)
Other income/(loss)	[3],[4]	304		(47)	442		(227)
Interest expense		118		115	241		229
Depreciation and amortization		16		15	32		32
Other Asset Impairment Charges		50			50
Other operating costs	[5]	22		30	36		62
Stock-based compensation expense		17		15	34		29
Other items (4)		21	[6]	17	45	[6]	44
Adjusted EBITDA		(28)		(18)	(59)		(37)
Operating Segments | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars		184		164	327		236
Net Income (Loss) Attributable to Noncontrolling Interest		0		0	0		0
Income tax benefit (1)	[1],[2]	0		0	0		0
Other income/(loss)	[3],[4]	(2)		2	(2)		0
Interest expense		83		80	166		158
Depreciation and amortization		119		132	247		274
Other Asset Impairment Charges		0			0
Other operating costs	[5]	2		1	5		29
Stock-based compensation expense		2		2	4		4
Other items (4)	[6]	1		2	2		3
Adjusted EBITDA		389		383	749		704
Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars		16		(9)	(10)		(59)
Net Income (Loss) Attributable to Noncontrolling Interest		1		1	0		1
Income tax benefit (1)	[1],[2]	0		0	0		0
Other income/(loss)	[3],[4]	(1)		0	(1)		(2)
Interest expense		142		139	285		277
Depreciation and amortization		106		121	209		242
Other Asset Impairment Charges		0			0
Other operating costs	[5]	0		1	12		7
Stock-based compensation expense		3		3	5		5
Other items (4)	[6]	3		2	3		3
Adjusted EBITDA		270		258	503		474
Intersegment Elimination
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars		0		0	0		0
Net Income (Loss) Attributable to Noncontrolling Interest		0		0	0		0
Income tax benefit (1)	[1],[2]	0		0	0		0
Other income/(loss)	[3],[4]	0		0	0		0
Interest expense		0		0	0		0
Depreciation and amortization		0		0	0		0
Other Asset Impairment Charges		0			0
Other operating costs	[5]	0		1	0		1
Stock-based compensation expense		0		0	0		0
Other items (4)	[6]	0		(1)	0		(1)
Adjusted EBITDA		$ 0		$ 0	$ 0		$ 0

[1] ⁽¹⁾  Taxes are recorded at the consolidated level and not estimated or recorded to our Las Vegas and Other U.S. segments.

[2] ⁽⁴⁾  Taxes are recorded at the consolidated level and not estimated or recorded to our Las Vegas and Other U.S. segments.

[3] ⁽²⁾  Amounts include changes in fair value of the derivative liability related to the conversion option of the CEC Convertible Notes and the disputed claims liability as well as interest and dividend income.

[4] ⁽³⁾  Amounts include changes in fair value of the derivative liability related to the conversion option of the CEC Convertible Notes and the disputed claims liability as well as interest and dividend income.

[5] ⁽³⁾  Amounts primarily represent costs incurred in connection with development activities and reorganization activities, and/or recoveries associated with such items, including acquisition and integration costs, contract exit fees including exiting the fully bundled sales system of NV Energy for electric service at our Nevada properties, lease termination costs, weather related property closure costs, severance costs, gains and losses on asset sales, demolition costs primarily at our Las Vegas properties for renovations, and project opening costs.

[6] ⁽⁴⁾  Amounts include other add-backs and deductions to arrive at Adjusted EBITDA but not separately identified such as professional and consulting services, sign-on and retention bonuses, business optimization expenses and transformation expenses, severance and relocation costs, litigation awards and settlements.