Quarterly report [Sections 13 or 15(d)]

Assets and Liabilities Measured at Fair Value - Narratives (Details)

v3.26.1
Assets and Liabilities Measured at Fair Value - Narratives (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Feb. 16, 2026
Dec. 31, 2025
Jun. 30, 2025
Jul. 02, 2024
Feb. 28, 2023
3.125% Exchangeable senior debentures due 2053              
Assets and Liabilities Measured at Fair Value              
Interest rate (as a percent) 3.125%   3.125% 3.125%   3.125% 3.125%
3.125% Exchangeable senior debentures due 2054              
Assets and Liabilities Measured at Fair Value              
Interest rate (as a percent) 3.125%       3.125% 3.125%  
Exchangeable senior debentures              
Assets and Liabilities Measured at Fair Value              
Change in fair value   $ (17)          
Cumulative change $ 20            
Exchangeable senior debentures | Maximum              
Assets and Liabilities Measured at Fair Value              
Change in fair value $ (1)