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INVESTMENTS AND FAIR VALUE MEASUREMENTS - Fair Value Hierarchy of Assets and Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Assets:    
Marketable equity securities $ 74 $ 6
Fair Value, Measurements, Recurring    
Assets:    
Money market funds (cash equivalents) 724 774
Marketable equity securities 74 6
Helix contingent value right 79 68
Deferred compensation plan assets 67 61
Total assets measured at fair value 944 909
Liabilities:    
Contingent consideration liabilities 131 387
Deferred compensation plan liability 63 59
Total liabilities measured at fair value 194 446
Fair Value, Measurements, Recurring | Level 1    
Assets:    
Money market funds (cash equivalents) 724 774
Marketable equity securities 74 6
Helix contingent value right 0 0
Deferred compensation plan assets 0 0
Total assets measured at fair value 798 780
Liabilities:    
Contingent consideration liabilities 0 0
Deferred compensation plan liability 0 0
Total liabilities measured at fair value 0 0
Fair Value, Measurements, Recurring | Level 2    
Assets:    
Money market funds (cash equivalents) 0 0
Marketable equity securities 0 0
Helix contingent value right 0 0
Deferred compensation plan assets 67 61
Total assets measured at fair value 67 61
Liabilities:    
Contingent consideration liabilities 0 0
Deferred compensation plan liability 63 59
Total liabilities measured at fair value 63 59
Fair Value, Measurements, Recurring | Level 3    
Assets:    
Money market funds (cash equivalents) 0 0
Marketable equity securities 0 0
Helix contingent value right 79 68
Deferred compensation plan assets 0 0
Total assets measured at fair value 79 68
Liabilities:    
Contingent consideration liabilities 131 387
Deferred compensation plan liability 0 0
Total liabilities measured at fair value $ 131 $ 387