Earnings Per Share - Additional Information (Details) - Stock Options, RSUs and MSUs shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 shares	Jun. 30, 2020 shares	Jun. 30, 2021 shares	Jun. 30, 2020 shares
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	16.9	14.2	17.4	15.6
Certain Performance-Based Awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	0.2	0.7	0.2	0.7
2026 Senior Notes | Maximum
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Cap price			107.36