Quarterly report [Sections 13 or 15(d)]

MARKETABLE SECURITIES - Schedule of Marketable Securities (Details)

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MARKETABLE SECURITIES - Schedule of Marketable Securities (Details) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Schedule of Available-for-sale Securities    
Debt securities, cost $ 15 $ 34
Debt securities, gross unrealized gains (losses) 0 0
Debt securities, estimated fair value 15 34
Cost 592 750
Gross unrealized gains (losses) 22 14
Estimated fair value 614 764
Publicly-traded shares | Level 1    
Schedule of Available-for-sale Securities    
Equity securities, cost 0 7
Equity securities, gross unrealized gains (losses) 0 (7)
Equity securities, estimated fair value 0 0
Debt mutual funds | Level 2    
Schedule of Available-for-sale Securities    
Equity securities, cost 304 416
Equity securities, gross unrealized gains (losses) 9 10
Equity securities, estimated fair value 313 426
Certificates of deposit | Level 2    
Schedule of Available-for-sale Securities    
Equity securities, cost 264 280
Equity securities, gross unrealized gains (losses) 0 0
Equity securities, estimated fair value 264 280
Equity mutual funds | Level 2    
Schedule of Available-for-sale Securities    
Equity securities, cost 9 13
Equity securities, gross unrealized gains (losses) 13 11
Equity securities, estimated fair value $ 22 $ 24