v3.26.1
Shareholders' Deficit (Details 2) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Schedule of changes in accumulated comprehensive income [Line Items]        
Accumulated other comprehensive loss $ (312)   $ (311)  
Gains (losses) arising during the year classified into AOCI, net of tax 9   12  
(Gains) losses reclassified from AOCI, net of tax 4   1  
Other comprehensive income (loss), net of tax 13 $ 51 13 $ 73
Accumulated other comprehensive loss (298)   (298)  
Translation Adjustments and Gains (Losses) From Intra-Entity Transactions of a Long-Term Nature        
Schedule of changes in accumulated comprehensive income [Line Items]        
Gains (losses) arising during the year classified into AOCI, net of tax 2   (2)  
(Gains) losses reclassified from AOCI, net of tax 0   0  
Other comprehensive income (loss), net of tax 2   (2)  
Pension and Post-Retirement Benefits        
Schedule of changes in accumulated comprehensive income [Line Items]        
Gains (losses) arising during the year classified into AOCI, net of tax 0   (1)  
(Gains) losses reclassified from AOCI, net of tax 1   2  
Other comprehensive income (loss), net of tax 1   1  
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent        
Schedule of changes in accumulated comprehensive income [Line Items]        
Gains (losses) arising during the year classified into AOCI, net of tax 7   15  
(Gains) losses reclassified from AOCI, net of tax 3   (1)  
Other comprehensive income (loss), net of tax $ 10   $ 14