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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2021

Stock-Based Compensation Plans

Schedule of stock option activity

​

​	​	​	​	​	​
​	​	​	​	​	​
​	​	​	​	​
​	​	Option	​	Weighted Average
Stock Options		Shares		Exercise Price
Outstanding at January 1, 2019	​	26,000	​	$	41.76
Exercised	​	(20,000)	​	​	40.80
Outstanding at December 31, 2019	​	6,000	​	​	44.99
Exercised	​	(6,000)	​	​	44.99
Outstanding and exercisable at December 31, 2020 and 2021	​	—	​	$	—

Summary of the status of the Company's restricted stock units and changes during the year

​

​	​	​	​	​	​	​	​	​
​	​	​	​	Weighted		​	​	​
​	​	​	​	Average		​	​	​
​	​	​	​	Grant Date		​	​	Aggregate
​	​	​	​	Fair Value		​	​	Fair Value
​	​	RSUs and PSUs		Per RSU		​	​	(in millions)
Unvested at January 1, 2021	​	995,720	​	$	85.27	​	​	​
Granted	​	318,495	​	​	141.41	​	​	​
Vested	​	(462,642)	​	​	88.02	​	​	​
Canceled or forfeited	​	(19,976)	​	​	90.26	​	​	​
Unvested at December 31, 2021	​	831,597	​	$	105.12	​	$	188.8

X

- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock and restricted stock units.

+ References

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- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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