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Equity (Tables)

3 Months Ended

Mar. 31, 2025

Equity

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

​

​	​	​	​	​	​
​	​	​	​	Weighted
​	​	​	​	Average
​	​	​	​	Grant Date
​	​	RSU and PSU	​	Fair Value
​	​	Aggregate Units	​	Per Unit
Unvested as of January 1, 2025	​	327,017	​	$	267.96
Granted(1)	​	162,900	​	​	299.38
Vested	​	(425)	​	​	261.27
Cancelled or forfeited	​	(3,542)	​	​	270.78
Unvested as of March 31, 2025	​	485,950	​	$	278.48
Shares reserved for future grants (all plans)	​	1,223,658	​	​	​

(1) Comprised of 96,973 RSUs and 65,927 PSUs granted in February 2025. The RSUs cliff vest on December 1, 2027 and the PSUs vest upon the completion of a 3-year performance period ending December 31, 2027.

Schedule of accumulated other comprehensive loss

​

​	​	​	​	​	​	​	​	​
​	​	​	​	Pension and		​	​
​	Foreign Currency		​	Postretirement Benefit		​	Accumulated Other
​	Translation		​	Plan Adjustments,		​	Comprehensive
​	(Loss) Gain			Net of Tax			(Loss) Income
​	​	​	​	(in millions)		​	​	​
Balance as of January 1, 2025	$	(119.7)	​	$	4.5	​	$	(115.2)
Current-period change	​	3.3	​	​	(0.9)	​	​	2.4
Balance as of March 31, 2025	$	(116.4)	​	$	3.6	​	$	(112.8)

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

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- Definition

Tabular disclosure of the components of accumulated other comprehensive income (loss).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481694/830-30-45-20

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