Business Combinations - Narrative (Details) shares in Millions, $ in Millions			3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 16, 2018 USD ($)	Oct. 06, 2017 USD ($) shares	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) reportable_segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Business Acquisition [Line Items]
Goodwill				$ 4,044	$ 4,012	$ 4,044
Number of reportable segments | reportable_segment					3
Acquired receivable, fair value		$ 139
Receivables, net			$ 494	457	$ 437	457	$ 494
Conversion of stock, exchange ratio		1.625
Stock issued during period (in shares) | shares		633
OpCo
Business Acquisition [Line Items]
Consideration transferred		$ 2,474
Goodwill		2,207
Deferred income taxes		$ 568
Revenue of acquiree since acquisition date, actual			1,000
Earnings or loss of acquiree since acquisition date, actual			52
Stock issued during period (in shares) | shares		139
Caesars Acquisition Company
Business Acquisition [Line Items]
Stock issued during period (in shares) | shares		226
Centaur Holdings, LLC
Business Acquisition [Line Items]
Consideration transferred	$ 1,702
Acquisition related costs					8
License transfer fee					50
Goodwill, acquired during period						275
Deferred income taxes	290
Revenue of acquiree since acquisition date, actual				226
Earnings or loss of acquiree since acquisition date, actual				49
Pro Forma | Centaur Holdings, LLC
Business Acquisition [Line Items]
Valuation allowance, deferred tax asset, increase (decrease)							185
Noncontrolling Interest
Business Acquisition [Line Items]
Decrease from distributions to noncontrolling interest holders		$ 13
Loans Receivable
Business Acquisition [Line Items]
Receivables, net			$ 69	25		25	$ 69
Other U.S.
Business Acquisition [Line Items]
Goodwill				$ 923	$ 896	923
Other U.S. | Centaur Holdings, LLC
Business Acquisition [Line Items]
Goodwill, acquired during period	$ 275					$ 275