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FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Assets:    
Available-for-sale debt securities   $ 2,426
Fair Value, Measurements, Recurring | Arcellx, Inc    
Liabilities:    
Equity securities subject to contractual sale restrictions $ 561  
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Total 5,517 8,639
Liabilities:    
Total 615 570
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement | MYR GmbH    
Liabilities:    
Liability for MYR GmbH (“MYR”) contingent consideration 222 228
Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Total 5,510 6,633
Liabilities:    
Total 343 283
Level 1 | Fair Value, Measurements, Recurring | MYR GmbH    
Liabilities:    
Liability for MYR GmbH (“MYR”) contingent consideration 0 0
Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Total 7 2,007
Liabilities:    
Total 49 59
Level 2 | Fair Value, Measurements, Recurring | MYR GmbH    
Liabilities:    
Liability for MYR GmbH (“MYR”) contingent consideration 0 0
Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Total 0 0
Liabilities:    
Total 222 228
Level 3 | Fair Value, Measurements, Recurring | MYR GmbH    
Liabilities:    
Liability for MYR GmbH (“MYR”) contingent consideration 222 228
U.S. treasury securities | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Available-for-sale debt securities 0 426
U.S. treasury securities | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 426
U.S. treasury securities | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
U.S. treasury securities | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
U.S. government agencies securities | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Available-for-sale debt securities 0 127
U.S. government agencies securities | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
U.S. government agencies securities | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 127
U.S. government agencies securities | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Non-U.S. government securities | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Available-for-sale debt securities 0 10
Non-U.S. government securities | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Non-U.S. government securities | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 10
Non-U.S. government securities | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Certificates of deposit | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Available-for-sale debt securities 0 45
Certificates of deposit | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Certificates of deposit | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 45
Certificates of deposit | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Corporate debt securities | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Available-for-sale debt securities 0 1,451
Corporate debt securities | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Corporate debt securities | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 1,451
Corporate debt securities | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Residential mortgage and asset-backed securities | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Available-for-sale debt securities 0 367
Residential mortgage and asset-backed securities | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Residential mortgage and asset-backed securities | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 367
Residential mortgage and asset-backed securities | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Available-for-sale debt securities 0 0
Money market funds | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Equity securities 3,502 4,465
Money market funds | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 3,502 4,465
Money market funds | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 0 0
Money market funds | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 0 0
Publicly traded equity securities | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Equity securities 1,665 1,458
Publicly traded equity securities | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 1,665 1,458
Publicly traded equity securities | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 0 0
Publicly traded equity securities | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 0 0
Deferred compensation plan | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Equity securities 343 284
Liabilities:    
Deferred compensation plan 343 283
Deferred compensation plan | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 343 284
Liabilities:    
Deferred compensation plan 343 283
Deferred compensation plan | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 0 0
Liabilities:    
Deferred compensation plan 0 0
Deferred compensation plan | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Equity securities 0 0
Liabilities:    
Deferred compensation plan 0 0
Foreign currency derivative contracts | Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement    
Assets:    
Foreign currency derivative contracts 7 7
Liabilities:    
Foreign currency derivative contracts 49 59
Foreign currency derivative contracts | Level 1 | Fair Value, Measurements, Recurring    
Assets:    
Foreign currency derivative contracts 0 0
Liabilities:    
Foreign currency derivative contracts 0 0
Foreign currency derivative contracts | Level 2 | Fair Value, Measurements, Recurring    
Assets:    
Foreign currency derivative contracts 7 7
Liabilities:    
Foreign currency derivative contracts 49 59
Foreign currency derivative contracts | Level 3 | Fair Value, Measurements, Recurring    
Assets:    
Foreign currency derivative contracts 0 0
Liabilities:    
Foreign currency derivative contracts $ 0 $ 0