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Stock-Based Compensation (Schedule Of Range Of Exercise Prices For Outstanding Options) (Details)
12 Months Ended
Dec. 31, 2021
$ / shares
shares
$30.05 - $61.87  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding | shares 391,971
Weighted Average Remaining Contractual Life (Years) 4 years 3 months 18 days
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 61.87
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 30.05
$63.98 - $65.81  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding | shares 442,247
Weighted Average Remaining Contractual Life (Years) 7 years 7 months 6 days
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 65.81
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 63.98
$68.09 - $79.83  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding | shares 316,977
Weighted Average Remaining Contractual Life (Years) 6 years 3 months 18 days
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 79.83
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 68.09
$86.54 - $86.54  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding | shares 261,157
Weighted Average Remaining Contractual Life (Years) 9 years 1 month 6 days
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 86.54
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 86.54
$107.75 - $107.75  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding | shares 157,304
Weighted Average Remaining Contractual Life (Years) 6 years 1 month 6 days
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 107.75
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 107.75