v3.26.1
BASIS OF PRESENTATION - Allowance for doubtful accounts rollforward (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Balance at beginning of period $ 9 $ 9
Provision for credit losses 2 1
Other (1) 0
Balance at end of period $ 10 $ 10