v3.26.3
ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance $ 2,879 $ 3,074 $ 3,052 $ 3,117
Other comprehensive (loss) gain, net of tax, before reclassifications     (19) 37
Amounts reclassified from AOCI, net of tax     25 18
Other comprehensive income (loss), net of taxes 0 (1) 6 55
Ending balance 2,977 3,094 2,977 3,094
Accumulated Other Comprehensive Loss        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (614) (636) (620) (692)
Ending balance (614) (637) (614) (637)
Currency Translation Adjustments        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     (43) (96)
Other comprehensive (loss) gain, net of tax, before reclassifications     (22) 39
Amounts reclassified from AOCI, net of tax     0 0
Other comprehensive income (loss), net of taxes     (22) 39
Ending balance (65) (57) (65) (57)
Net Actuarial (Loss) Gain and Prior Service Costs        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     (575) (597)
Other comprehensive (loss) gain, net of tax, before reclassifications     0 0
Amounts reclassified from AOCI, net of tax     25 19
Other comprehensive income (loss), net of taxes     25 19
Ending balance (550) (578) (550) (578)
Unrealized (Loss) Gain from Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance     (2) 1
Other comprehensive (loss) gain, net of tax, before reclassifications     3 (2)
Amounts reclassified from AOCI, net of tax     0 (1)
Other comprehensive income (loss), net of taxes     3 (3)
Ending balance $ 1 $ (2) $ 1 $ (2)