Share-Based Payments - Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense before income taxes	$ 166	$ 209	$ 178
Income tax benefit	(29)	(46)	(34)
Total share-based compensation expense, net of income tax benefit	137	163	144
Cost of revenues—product sales: Software royalties, amortization, and intellectual property licenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense before income taxes	19	13	10
Cost of revenues—subscription, licensing, and other revenues: Game Operations and Distribution Costs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense before income taxes	1	2	1
Cost of revenues—subscription, licensing, and other revenues: Software royalties, amortization, and intellectual property licenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense before income taxes	1	3	3
Product development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense before income taxes	53	61	57
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense before income taxes	10	15	15
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense before income taxes	$ 82	$ 115	$ 92