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Stock Plans and Share-Based Compensation - Weighted Average Assumptions Used for Performance Units (Details) - Performance Units
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Weighted-Average Assumptions Used:    
Risk-free Interest Rate 1.70% 0.20%
Annualized Volatility 33.00% 33.60%
Expected Life (in years) 2 years 10 months 24 days 2 years 10 months 24 days