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Stock-based Compensation - Schedule of Performance Shares Award Outstanding Activity (Details) - Performance Shares
shares in Millions
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Units (millions)  
Beginning Balance (in shares) | shares 0.8
Granted (in shares) | shares 0.4
Vested (in shares) | shares (0.1)
Forfeited (in shares) | shares (0.2)
Ending Balance (in shares) | shares 0.9
Weighted- Average Exercise Price  
Beginning Balance (in usd per share) | $ / shares $ 30.10
Granted (in usd per share) | $ / shares 30.61
Vested (in usd per share) | $ / shares 29.12
Forfeited (in usd per share) | $ / shares 29.61
Ending Balance (in usd per share) | $ / shares $ 30.46