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Stock-based Compensation - Schedule of Share-based Compensation, Restricted Stock and Restricted Units Activity (Details) - Restricted Stock and Restricted Stock Units
shares in Millions
12 Months Ended
Dec. 31, 2021
$ / shares
shares
Awards/Units (in millions)  
Beginning balance (in shares) | shares 1.0
Granted (in shares) | shares 0.7
Vested (in shares) | shares (0.5)
Forfeited (in shares) | shares (0.1)
Ending balance (in shares) | shares 1.1
Weighted- Average Exercise Price  
Beginning balance (in dollars per share) | $ / shares $ 28.84
Granted (in dollars per share) | $ / shares 28.95
Vested (in dollars per share) | $ / shares 28.99
Forfeited (in dollars per share) | $ / shares 28.58
Ending balance (in dollars per share) | $ / shares $ 28.85