FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Recorded at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets
Available-for-sale debt securities	$ 2,426	$ 2,293
Fair value, recurring
Assets
Total	8,639	7,600
Liabilities:
Total	570	538
Fair value, recurring \| MYR
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	228	275
Fair value, recurring \| Galapagos
Liabilities:
Equity investment, current	686
Equity investment, noncurrent		736
Fair value, recurring \| Arcellx, Inc
Liabilities:
Equity investment, noncurrent	373
Level 1 \| Fair value, recurring
Assets
Total	6,633	5,658
Liabilities:
Total	283	220
Level 1 \| Fair value, recurring \| MYR
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	0	0
Level 1 \| Fair value, recurring \| Galapagos
Liabilities:
Equity investment, current	686
Level 2 \| Fair value, recurring
Assets
Total	2,007	1,943
Liabilities:
Total	59	42
Level 2 \| Fair value, recurring \| MYR
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	0	0
Level 3 \| Fair value, recurring
Assets
Total	0	0
Liabilities:
Total	228	275
Level 3 \| Fair value, recurring \| MYR
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	228	275
U.S. treasury securities \| Fair value, recurring
Assets
Available-for-sale debt securities	426	410
U.S. treasury securities \| Level 1 \| Fair value, recurring
Assets
Available-for-sale debt securities	426	410
U.S. treasury securities \| Level 2 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
U.S. treasury securities \| Level 3 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
U.S. government agencies securities \| Fair value, recurring
Assets
Available-for-sale debt securities	127	35
U.S. government agencies securities \| Level 1 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
U.S. government agencies securities \| Level 2 \| Fair value, recurring
Assets
Available-for-sale debt securities	127	35
U.S. government agencies securities \| Level 3 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Non-U.S. government securities \| Fair value, recurring
Assets
Available-for-sale debt securities	10	34
Non-U.S. government securities \| Level 1 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Non-U.S. government securities \| Level 2 \| Fair value, recurring
Assets
Available-for-sale debt securities	10	34
Non-U.S. government securities \| Level 3 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Certificates of deposit \| Fair value, recurring
Assets
Available-for-sale debt securities	45	54
Certificates of deposit \| Level 1 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Certificates of deposit \| Level 2 \| Fair value, recurring
Assets
Available-for-sale debt securities	45	54
Certificates of deposit \| Level 3 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Corporate debt securities \| Fair value, recurring
Assets
Available-for-sale debt securities	1,451	1,427
Corporate debt securities \| Level 1 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Corporate debt securities \| Level 2 \| Fair value, recurring
Assets
Available-for-sale debt securities	1,451	1,427
Corporate debt securities \| Level 3 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Residential mortgage and asset-backed securities \| Fair value, recurring
Assets
Available-for-sale debt securities	367	333
Residential mortgage and asset-backed securities \| Level 1 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Residential mortgage and asset-backed securities \| Level 2 \| Fair value, recurring
Assets
Available-for-sale debt securities	367	333
Residential mortgage and asset-backed securities \| Level 3 \| Fair value, recurring
Assets
Available-for-sale debt securities	0	0
Money market funds \| Fair value, recurring
Assets
Marketable equity securities	4,465	3,831
Money market funds \| Level 1 \| Fair value, recurring
Assets
Marketable equity securities	4,465	3,831
Money market funds \| Level 2 \| Fair value, recurring
Assets
Marketable equity securities	0	0
Money market funds \| Level 3 \| Fair value, recurring
Assets
Marketable equity securities	0	0
Publicly traded equity securities \| Fair value, recurring
Assets
Marketable equity securities	1,458	1,197
Publicly traded equity securities \| Level 1 \| Fair value, recurring
Assets
Marketable equity securities	1,458	1,197
Publicly traded equity securities \| Level 2 \| Fair value, recurring
Assets
Marketable equity securities	0	0
Publicly traded equity securities \| Level 3 \| Fair value, recurring
Assets
Marketable equity securities	0	0
Deferred compensation plan \| Fair value, recurring
Assets
Marketable equity securities		220
Liabilities:
Deferred compensation plan	283	220
Deferred compensation plan \| Level 1 \| Fair value, recurring
Assets
Marketable equity securities	284	220
Liabilities:
Deferred compensation plan	283	220
Deferred compensation plan \| Level 2 \| Fair value, recurring
Assets
Marketable equity securities	0	0
Liabilities:
Deferred compensation plan	0	0
Deferred compensation plan \| Level 3 \| Fair value, recurring
Assets
Marketable equity securities	0	0
Liabilities:
Deferred compensation plan	0	0
Foreign currency derivative contracts \| Fair value, recurring
Assets
Foreign currency derivative contracts	7	60
Liabilities:
Foreign currency derivative contracts	59	42
Foreign currency derivative contracts \| Level 1 \| Fair value, recurring
Assets
Foreign currency derivative contracts	0	0
Liabilities:
Foreign currency derivative contracts	0	0
Foreign currency derivative contracts \| Level 2 \| Fair value, recurring
Assets
Foreign currency derivative contracts	7	60
Liabilities:
Foreign currency derivative contracts	59	42
Foreign currency derivative contracts \| Level 3 \| Fair value, recurring
Assets
Foreign currency derivative contracts	0	0
Liabilities:
Foreign currency derivative contracts	$ 0	$ 0

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