v3.25.4
Segment and geographic information - Revenue and Assets by Geographical Area (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total Revenues $ 11,815 $ 11,704 $ 11,677
Total long-lived assets by geographical area 7,935 7,534  
U.S.      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total Revenues 9,111 9,026 8,986
Total long-lived assets by geographical area 5,672 5,467  
Canada      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total Revenues 2,675 2,678 2,691
Total long-lived assets by geographical area 2,244 2,067  
Other      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total Revenues 29 0 $ 0
Total long-lived assets by geographical area $ 19 $ 0