Intangible Assets, net and Goodwill (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 0		$ 0	$ 54	$ 0
Revenue, Estimated Terminal Growth Rate [Member]
Goodwill [Line Items]
Goodwill, Fair Value Input, Revenue Growth		(2.00%)
Maximum [Member]
Goodwill [Line Items]
Goodwill, Fair Value Input, Profit Margin		23.00%
Goodwill, Fair Value Input, Discount Rate		10.00%
Maximum [Member] | Measurement Input, EBITDA Multiple [Member]
Goodwill [Line Items]
Goodwill, Market Comparable Analysis, Measurement Input		750.00%
Maximum [Member] | Revenue Growth Estimate, FY 2021 [Member]
Goodwill [Line Items]
Goodwill, Fair Value Input, Revenue Growth		20.00%
Maximum [Member] | Revenue Growth Estimate, FY2022 to FY2027 [Member]
Goodwill [Line Items]
Goodwill, Fair Value Input, Revenue Growth		5.00%
Maximum [Member] | Measurement Input, Revenue Multiple [Member]
Goodwill [Line Items]
Goodwill, Market Comparable Analysis, Measurement Input		270.00%
Minimum [Member]
Goodwill [Line Items]
Goodwill, Fair Value Input, Profit Margin		13.00%
Goodwill, Fair Value Input, Discount Rate		8.50%
Minimum [Member] | Measurement Input, EBITDA Multiple [Member]
Goodwill [Line Items]
Goodwill, Market Comparable Analysis, Measurement Input		570.00%
Minimum [Member] | Revenue Growth Estimate, FY 2021 [Member]
Goodwill [Line Items]
Goodwill, Fair Value Input, Revenue Growth		9.00%
Minimum [Member] | Revenue Growth Estimate, FY2022 to FY2027 [Member]
Goodwill [Line Items]
Goodwill, Fair Value Input, Revenue Growth		3.00%
Minimum [Member] | Measurement Input, Revenue Multiple [Member]
Goodwill [Line Items]
Goodwill, Market Comparable Analysis, Measurement Input		210.00%
U.K. Gaming
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 54	$ 54