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Employee Incentive, Deferred Compensation, And Retirement Plans (Tables)
12 Months Ended
Dec. 31, 2018
Share Based Compensation Allocation And Classification In Financial Statements [Abstract]  
Unvested Stock Award Activity

 

 

 

Units

 

 

Weighted-average grant date fair value

 

Unvested December 31, 2017

 

 

13,938

 

 

$

44.31

 

Granted

 

 

2,496

 

 

 

55.94

 

Vested

 

 

(2,030

)

 

 

41.18

 

Cancelled

 

 

(287

)

 

 

47.98

 

Unvested December 31, 2018

 

 

14,117

 

 

$

46.75