Intangible Assets, net and Goodwill - Schedule of Finite and Indefinite-lived Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Amortizable intangible assets:
Amortizable intangible assets, gross carrying value	$ 2,802		$ 2,828
Amortizable intangible assets, accumulated amortization	(1,454)		(1,393)
Amortizable intangible assets, net balance	1,348		1,435
Non-amortizable intangible assets:
Total intangible assets, gross carrying value	2,885		2,911
Total intangible assets, accumulated amortization (excluding goodwill)	(1,456)		(1,395)
Total intangible assets, net	1,429		1,516
Goodwill, Impairment Loss	54	$ 0
U.K. Gaming [Member]
Non-amortizable intangible assets:
Goodwill, Impairment Loss	54
Trade names
Non-amortizable intangible assets:
Non-amortizable intangible assets, Gross Carrying Value	83		83
Non-amortizable intangible assets, Accumulated Amortization	(2)		(2)
Non-amortizable intangible assets, Net Balance	81		81
Customer relationships
Amortizable intangible assets:
Amortizable intangible assets, gross carrying value	1,064		1,086
Amortizable intangible assets, accumulated amortization	(398)		(383)
Amortizable intangible assets, net balance	666		703
Intellectual property
Amortizable intangible assets:
Amortizable intangible assets, gross carrying value	915		931
Amortizable intangible assets, accumulated amortization	(573)		(563)
Amortizable intangible assets, net balance	342		368
Licenses
Amortizable intangible assets:
Amortizable intangible assets, gross carrying value	563		548
Amortizable intangible assets, accumulated amortization	(361)		(329)
Amortizable intangible assets, net balance	202		219
Brand names
Amortizable intangible assets:
Amortizable intangible assets, gross carrying value	120		123
Amortizable intangible assets, accumulated amortization	(73)		(72)
Amortizable intangible assets, net balance	47		51
Trade names
Amortizable intangible assets:
Amortizable intangible assets, gross carrying value	116		116
Amortizable intangible assets, accumulated amortization	(34)		(31)
Amortizable intangible assets, net balance	82		85
Patents and other
Amortizable intangible assets:
Amortizable intangible assets, gross carrying value	24		24
Amortizable intangible assets, accumulated amortization	(15)		(15)
Amortizable intangible assets, net balance	$ 9		$ 9