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Stock-Based Compensation Plans
 9 Months Ended
Sep. 30, 2025
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Stock-Based Compensation Plans STOCK-BASED COMPENSATION PLANS
Restricted Stock Units Number of Restricted Stock UnitsWeighted Average Grant-Date Fair Value Per Share
Outstanding as of December 31, 2024
533,447 $407.15 
Granted102,035 471.21
Settled(16,694)521.79
Forfeited(2,273)474.74
Outstanding as of September 30, 2025
616,515 $414.39 

Stock-based compensation expense consists of the following:
(In millions)For the Three Months Ended 
September 30,		For the Nine Months Ended 
September 30,
 2025202420252024
Restricted stock units$11.4 $2.4 $33.3 $7.5 
Stock options0.7 8.3 4.4 24.7 
Total$12.1 $10.7 $37.7 $32.2 

Pursuant to our Amended and Restated Incentive Compensation Plan, we can grant stock-based awards in the form of restricted stock, restricted stock units, and stock options to team members, officers, directors, and contractors. Instead of a short-term compensation program providing for rolling, annual equity awards to our executive officers and senior leaders, we utilize a multi-year compensation program that grants a one-time equity award at the beginning of the compensation program period that is intended to incentivize recipients over the multi-year compensation period. Our current compensation program for executive officers and senior leaders covers the 2025 through 2034 compensation period and included a one-time equity award in December 2024 (except in the case of our Chief Executive Officer, who received a one-time equity award in January 2025), with a vesting period of 10 years. Based on the stock-based awards that are currently outstanding, we expect to recognize future stock-based compensation expense as follows:

(in millions)
YearTotal Projected
Stock-Based Compensation Expense
Remainder of 2025$12.2 
202642.0 
202733.5 
202826.9 
202918.9 
Thereafter76.8 
Total$210.3