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Equity Incentive Plans and Stock-Based Compensation - Repurchase Agreement - USD ($)
shares in Millions, $ in Millions
12 Months Ended
May 17, 2020
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]    
Treasury Stock, Shares, Acquired 2.2 2.7
Treasury Stock, Value, Acquired, Cost Method $ 13.3 $ 19.2