FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets:
Available-for-sale debt securities	$ 2,382	$ 2,293
Fair Value, Measurements, Recurring \| Estimate of Fair Value Measurement
Assets:
Total	8,042	7,600
Liabilities:
Total	540	538
Fair Value, Measurements, Recurring \| Estimate of Fair Value Measurement \| MYR GmbH
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	275	275
Fair Value, Measurements, Recurring \| Estimate of Fair Value Measurement \| Galapagos
Assets:
Marketable equity securities	571	736
Fair Value, Measurements, Recurring \| Estimate of Fair Value Measurement \| Arcus
Assets:
Marketable equity securities	266	286
Level 1 \| Fair Value, Measurements, Recurring
Assets:
Total	6,021	5,658
Liabilities:
Total	258	220
Level 1 \| Fair Value, Measurements, Recurring \| MYR GmbH
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	0	0
Level 1 \| Fair Value, Measurements, Recurring \| Galapagos
Assets:
Marketable equity securities	571	736
Level 1 \| Fair Value, Measurements, Recurring \| Arcus
Assets:
Marketable equity securities	266	286
Level 2 \| Fair Value, Measurements, Recurring
Assets:
Total	2,021	1,943
Liabilities:
Total	8	42
Level 2 \| Fair Value, Measurements, Recurring \| MYR GmbH
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	0	0
Level 2 \| Fair Value, Measurements, Recurring \| Galapagos
Assets:
Marketable equity securities	0	0
Level 2 \| Fair Value, Measurements, Recurring \| Arcus
Assets:
Marketable equity securities	0	0
Level 3 \| Fair Value, Measurements, Recurring
Assets:
Total	0	0
Liabilities:
Total	275	275
Level 3 \| Fair Value, Measurements, Recurring \| MYR GmbH
Liabilities:
Liability for MYR GmbH (“MYR”) contingent consideration	275	275
Level 3 \| Fair Value, Measurements, Recurring \| Galapagos
Assets:
Marketable equity securities	0	0
Level 3 \| Fair Value, Measurements, Recurring \| Arcus
Assets:
Marketable equity securities	0	0
U.S. treasury securities \| Fair Value, Measurements, Recurring \| Estimate of Fair Value Measurement
Assets:
Available-for-sale debt securities	428	410
U.S. treasury securities \| Level 1 \| Fair Value, Measurements, Recurring
Assets:
Available-for-sale debt securities	428	410
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	152	35
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	152	35
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	10	34
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	10	34
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	97	54
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	97	54
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	1,334	1,427
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	1,334	1,427
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	361	333
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	361	333
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:
Marketable equity securities	4,240	3,831
Money market funds \| Level 1 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	4,240	3,831
Money market funds \| Level 2 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	0	0
Money market funds \| Level 3 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	0	0
Other publicly traded equity securities
Assets:
Total	5,594	5,248
Other publicly traded equity securities \| Fair Value, Measurements, Recurring \| Estimate of Fair Value Measurement
Assets:
Marketable equity securities	257	175
Other publicly traded equity securities \| Level 1 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	257	175
Other publicly traded equity securities \| Level 2 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	0	0
Other publicly traded equity securities \| Level 3 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	0	0
Deferred compensation plan \| Fair Value, Measurements, Recurring \| Estimate of Fair Value Measurement
Assets:
Marketable equity securities	259	220
Liabilities:
Deferred compensation plan	258	220
Deferred compensation plan \| Level 1 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	259	220
Liabilities:
Deferred compensation plan	258	220
Deferred compensation plan \| Level 2 \| Fair Value, Measurements, Recurring
Assets:
Marketable equity securities	0	0
Liabilities:
Deferred compensation plan	0	0
Deferred compensation plan \| Level 3 \| Fair Value, Measurements, Recurring
Assets:
Marketable 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	67	60
Liabilities:
Foreign currency derivative contracts	8	42
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	67	60
Liabilities:
Foreign currency derivative contracts	8	42
Foreign currency derivative contracts \| Level 3 \| Fair Value, Measurements, Recurring
Assets:
Foreign currency derivative contracts	0	0
Liabilities:
Foreign currency derivative contracts	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value of financial and nonfinancial obligations.

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