Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended	12 Months Ended
	Feb. 07, 2020	Nov. 19, 2019	Jun. 28, 2019	May 23, 2019	Dec. 19, 2018	Feb. 05, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Subsidiary or Equity Method Investee [Line Items]
Total number of common and preferred shares authorized (in shares)								750,000,000
Common stock, shares authorized (in shares)								700,000,000	700,000,000
Common stock, par value (in dollars per share)								$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)								50,000,000	50,000,000
Preferred stock, par value (in dollars per share)								$ 0.01	$ 0.01
Shares issued (in shares)		34,500,000				69,575,000
Offering forward price (in dollars per share)		$ 21.00	$ 21.50
Offering Stock During Period, Value			$ 1,100,000
Forward agreement on the proceeds from issuance of common stock			$ 1,000,000
Forward contract indexed to issuer's equity (in shares)			50,000,000
Stock sold pursuant to the exercise in full of underwriters' option to purchase additional common stock (in shares)			15,000,000
Share price (in dollars per share)						$ 20.00
Aggregate offering value of shares		$ 724,500				$ 1,400,000	$ 963,782
Proceeds from follow-on offering of common stock		694,200				$ 1,300,000
Additional shares subject to forward sale (in shares)			65,000,000					65,000,000
Common stock, shares outstanding (in shares)							300,278,938	461,004,742	404,729,616
JACK Entertainment LLC | Greektown Acquisition
Subsidiary or Equity Method Investee [Line Items]
Cash payment in business acquisition		$ 700,000		$ 700,000
ATM Stock Offering Program
Subsidiary or Equity Method Investee [Line Items]
Stock allowed to be issued during period, value					$ 750,000
Scenario, Plan
Subsidiary or Equity Method Investee [Line Items]
Offering forward price (in dollars per share)								$ 19.96
Forward agreement on the proceeds from issuance of common stock								$ 1,300,000
Forward contract indexed to issuer's equity (in shares)								13,500,000
Cash outflow for shares								$ 346,200
ATM Stock Offering Program
Subsidiary or Equity Method Investee [Line Items]
Shares issued (in shares)								6,107,633	0
Proceeds from follow-on offering of common stock								$ 128,300
ATM Stock Offering Program | Subsequent Event
Subsidiary or Equity Method Investee [Line Items]
Shares issued (in shares)	7,500,000
Proceeds from follow-on offering of common stock	$ 200,000