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
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Schedule of Available-for-sale Securities    
Debt securities, cost $ 26 $ 34
Debt securities, gross unrealized gains (losses) 0 0
Debt securities, estimated fair value 26 34
Cost 718 750
Gross unrealized gains (losses) 27 14
Estimated fair value 745 764
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 443 416
Equity securities, gross unrealized gains (losses) 14 10
Equity securities, estimated fair value 457 426
Certificates of deposit | Level 2    
Schedule of Available-for-sale Securities    
Equity securities, cost 238 280
Equity securities, gross unrealized gains (losses) 0 0
Equity securities, estimated fair value 238 280
Equity mutual funds | Level 2    
Schedule of Available-for-sale Securities    
Equity securities, cost 11 13
Equity securities, gross unrealized gains (losses) 13 11
Equity securities, estimated fair value $ 24 $ 24