Quarterly report [Sections 13 or 15(d)]

Stock-Based Compensation - Compensation expense (Details)

v3.26.1
Stock-Based Compensation - Compensation expense (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Stock-Based Compensation        
Stock-based compensation $ 1 $ 1 $ 2 $ 2