Earnings per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share, Basic and Diluted [Line Items]
Anti-dilutive shares excluded from calculation of Weighted average shares outstanding – diluted (in shares)	11	0	15	0
Stock-based compensation awards
Earnings Per Share, Basic and Diluted [Line Items]
Anti-dilutive shares excluded from calculation of Weighted average shares outstanding – diluted (in shares)	3	0	7	0
5% Convertible notes
Earnings Per Share, Basic and Diluted [Line Items]
Anti-dilutive shares excluded from calculation of Weighted average shares outstanding – diluted (in shares)	8	0	8	0