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Stock-Based Compensation Performance Share Awards (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance share awards, minimum payout 0.00%    
Performane share awards, maximum payout 200.00%    
Performance share awards, expected target 100.00% 179.00% 200.00%
Performance shares units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of outstanding options or share units 980 105,180 [1] 95,940 [1]
Share-based compensation options, exercise price on grant date $ 43.29 $ 37.81 [1] $ 40.54 [1]
Fair value of awards awarded on grant date $ 0.0 $ 4.0 [1] $ 3.9 [1]
Share-based compensation expense, deferred $ 3.2    
Share-based compensation expense, Period for Recognition 24 months    
Officer [Member] | Performance shares units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of outstanding options or share units 77,320 9,587 [1]  
Share-based compensation options, exercise price on grant date $ 37.54 $ 41.72 [1]  
Fair value of awards awarded on grant date $ 2.9 $ 0.4 [1]  
Management | Performance shares units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of outstanding options or share units 779    
Share-based compensation options, exercise price on grant date $ 41.72    
Fair value of awards awarded on grant date $ 0.0    
[1] The PSUs awarded in March 2019, 2020, and 2021, August 2019, April 2021 and August 2021 were awarded and have a performance period of two years followed by an additional one year vesting period. The PSU awards are subject to certain performance goals with payouts that range from 0% to 200% of the target awards. The values shown in the table represent the aggregate number of PSUs awarded at the target level.