Quarterly report [Sections 13 or 15(d)]

REVENUE RECOGNITION - Narrative (Details)

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REVENUE RECOGNITION - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]          
Maximum capacity $ 860   $ 860    
Capacity available 410   410    
Cash collections not yet remitted 109   109   $ 59
Remaining principal amount outstanding 450   450   491
Allowance for credit losses 213   213   180
Provisions for doubtful receivables 102 $ 103 201 $ 172  
Contract assets 289   289   275
Long-term contract liabilities 43   43   49
Short-term contract liabilities $ 0   $ 0   $ 0