REVENUE - Schedule of Changes in the Allowance for Credit Losses (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at January 1	$ 12	$ 10
Provision for expected credit losses during the period	2	5
Write-offs charged against the allowance	(1)	(7)
Recoveries of amounts previously written off	0	4
Balance at end of period	$ 13	$ 12

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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+ Details