v3.26.1
Stock-based compensation - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
shares
Performance-Based Restricted Stock Unit Awards  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Awards granted (in shares) | shares 245,072
Awards granted fair value $ 10
Award vesting period (in years) 1 year
Unrecognized noncash compensation cost $ 20
Unrecognized noncash compensation cost, weighted-average period to be recognized 1 year 2 months 12 days
Time-Based Restricted Stock Unit Awards  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Awards granted (in shares) | shares 0
Unrecognized noncash compensation cost $ 72
Unrecognized noncash compensation cost, weighted-average period to be recognized 1 year 4 months 24 days
Time-Based Long-Term Incentive Plant (LTIP) Awards  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Unrecognized noncash compensation cost $ 43
Unrecognized noncash compensation cost, weighted-average period to be recognized 1 year 1 month 6 days
Performance-Based Long-Term Incentive Plan (LTIP) Awards  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Unrecognized noncash compensation cost $ 16
Unrecognized noncash compensation cost, weighted-average period to be recognized 1 year 3 months 18 days