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Stock Based Awards and Other Equity Instruments - Additional Information 2 (Details) - USD ($) $ in Millions		12 Months Ended
	May 27, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense		$ 109	$ 124	$ 118
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense		$ 17
Stock award modification term		On May 27, 2020 and July 15, 2020, the Compensation Committee of the Board of Directors, approved modifications to the Company’s annual RSU and stock option grants, respectively, issued to its employees in the first quarter of 2020. Such modifications reduced the original grant-date vesting period from four years to two years.
Maximum \| Restricted Stock Units \| Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options vest period	4 years
Minimum \| Restricted Stock Units \| Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options vest period	2 years