Share-Based Compensation - Compensation Expense and Related Income Tax Benefit (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]
Total compensation expense	$ 60	$ 53	$ 38
Income tax benefit	9	10	11
Unearned compensation costs related to awards granted	$ 62
Unearned compensation cost, expected to be recognized over period (years)	1 year 4 months 24 days
Cost of sales
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	$ 4	4	3
Selling and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	17	13	8
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	16	15	11
General and administration
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	$ 23	$ 21	$ 16