v3.25.4
Stock-based compensation (Tables)
 12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of components of stock-based compensation expense
The following table presents the components of stock-based compensation expense:
(in millions)
Classification
Year ended December 31,
202520242023
Stock optionsEquity$9.3 $10.5 $13.7 
RSUsEquity37.1 35.0 25.5 
OtherBoth— 1.3 1.3 
Total$46.4 $46.8 $40.5 
Award classification:
Equity$47.6 $47.0 $40.2 
Liability(1.2)(0.2)0.3 
Schedule of information about outstanding stock options
The following table presents information about outstanding stock options:
(options and intrinsic value in millions)
Number of options
Weighted average exercise price per optionAggregate intrinsic valueWeighted average remaining term
Balance on December 31, 202411.9 $21.94 
Granted1.5 16.01 
Exercised(0.1)7.80 
Forfeited(1.6)22.57 
Balance on December 31, 202511.7 $21.18 $— 4.2 years
Expected to vest2.0 19.16 — 8.6 years
Vested9.7 21.57 — 3.4 years
Schedule of weighted-average information about stock options granted
The following table presents weighted-average information about stock options granted:
Year ended December 31,
202520242023
Grant date fair value per option$6.05$9.86$9.64
Assumptions used to determine grant date fair value:
Expected stock price volatility32 %34 %33 %
Risk free interest rate4.2 %4.3 %4.1 %
Expected dividend ratenilnilnil
Expected life of options6.0 years6.0 years6.2 years
Schedule of other information about stock options
The following table presents other information about stock options:
(in millions)
Year ended December 31,
202520242023
Fair value of options vested$12.5 $13.7 $14.2 
Intrinsic value of options exercised0.8 11.7 7.1 
Schedule of information about unvested RSUs
The following table presents information about unvested RSUs:
(awards in millions)
Number of awardsWeighted average grant date fair value per award
Balance on December 31, 20244.6 $26.63 
Granted4.9 15.33 
Vested(1.3)27.14 
Forfeited(1.5)21.36 
Balance on December 31, 20256.7 $17.88