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Share-Based Compensation and Settlement of Share-Based Awards - Narrative (Details)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Restricted Stock Units (RSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
RSUs granted (in shares) | shares 3.8
Weighted average grant date fair value, RSUs granted during period (in usd per share) | $ / shares $ 22.67
Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period 3 years
Unrecognized compensation cost | $ $ 157.0
Unrecognized compensation cost, period for recognition 2 years 2 months 12 days