Fair Value Measurements - Additional Information (Details)		3 Months Ended		9 Months Ended
	Oct. 06, 2017 USD ($) day $ / shares shares	Sep. 30, 2019 USD ($) interest_rate_swap_agreement $ / shares	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) interest_rate_swap_agreement $ / shares shares	Sep. 30, 2018 USD ($)	Dec. 31, 2018 $ / shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount		$ 8,678,000,000		$ 8,678,000,000
Gain (loss) on derivative, net		26,000,000	$ 97,000,000	(434,000,000)	$ 282,000,000
Accumulated other comprehensive income/(loss)		8,000,000	14,000,000	69,000,000	31,000,000
Interest expense on the statements of operations		3,000,000	0	4,000,000	0
Losses that are reported in AOCI at the reporting date that are expected to be reclassified into earnings within the next 12 months		28,000,000		28,000,000
Level 2 | Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, option, changes in fair value, gain (loss)		$ 1,000,000	$ 13,000,000	$ (14,000,000)	$ 39,000,000
Convertible notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate of debt		5.00%		5.00%		7.00%
Traded price of convertible notes (usd per share) | $ / shares		$ 170.17		$ 170.17		$ 122.38
Term of convertible notes				7 years
Designated as hedging instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of interest rate derivatives | interest_rate_swap_agreement		10		10
Derivative, notional amount		$ 3,000,000,000.0		$ 3,000,000,000.0
CEC Convertible Notes | Unsecured debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount	$ 1,100,000,000
Interest rate of debt	5.00%
Number of equity instruments of debt (in shares) | shares	0.139			151,000,000
Stock price trigger (usd per share) | $ / shares	$ 1.00
Traded price of convertible notes (usd per share) | $ / shares	$ 7.19
Percentage of common shares outstanding	17.90%
Conversion percentage	140.00%
Debt convertible, trading days | day	20
Consecutive trading day period | day	30
Term of convertible notes				5 years
Convertible notes | Unsecured debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount		$ 1,083,000,000		$ 1,083,000,000
Interest rate of debt		5.00%		5.00%
Convertible notes face value		$ 1,100,000,000		$ 1,100,000,000
Caesars Entertainment, Inc. | CEC Convertible Notes | Unsecured debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of equity instruments of debt (in shares) | shares				156,000,000