Schedule I - CONDENSED STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME/(LOSS) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net revenues									$ 8,588	$ 8,230	$ 4,689
Operating expenses
Corporate expense									295	332	202
Other operating costs									136	155	65
Total operating expenses									8,124	7,652	4,331
Loss from operations	$ 177	$ (68)	$ 269	$ 240	$ 100	$ 232	$ 282	$ 125	618	739	537
Interest expense									(1,370)	(1,346)	(773)
Restructuring and support expenses									0	0	(2,028)
Other income/(loss)									(587)	791	95
Income/(loss) before income taxes									(1,339)	183	(2,370)
Income tax benefit/(provision)									141	121	1,995
Other comprehensive income/(loss), net of income taxes									(42)	(34)	6
Comprehensive income/(loss) attributable to Caesars									(1,232)	273	(362)
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net revenues									2	2	2
Operating expenses
Corporate expense									40	33	88
Other operating costs									31	10	24
Total operating expenses									71	43	112
Loss from operations									(69)	(41)	(110)
Interest expense									(63)	(55)	(18)
Gain/(loss) on interests in subsidiaries									(457)	(316)	776
Restructuring and support expenses									0	0	(1,842)
Other income/(loss)									(604)	726	85
Income/(loss) before income taxes									(1,193)	314	(1,109)
Income tax benefit/(provision)									(2)	(11)	741
Net income/(loss)									(1,195)	303	(368)
Other comprehensive income/(loss), net of income taxes									0	(30)	6
Comprehensive income/(loss) attributable to Caesars									$ (1,195)	$ 273	$ (362)