FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Carried at Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Recurring Basis
ASSETS:
Assets at fair value	$ 15,154	$ 11,917
Recurring Basis | Money market fund investments | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	14,390	10,871
Recurring Basis | Certificates of deposit | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	87	97
Recurring Basis | International government securities | Short-term Investments
ASSETS:
Assets at fair value	41	63
Recurring Basis | U.S. government securities | Short-term Investments
ASSETS:
Assets at fair value	106	151
Recurring Basis | Corporate debt securities | Short-term Investments
ASSETS:
Assets at fair value	215	362
Recurring Basis | Equity securities with readily determinable fair values | Long-term Investments
ASSETS:
Assets at fair value	295	311
Recurring Basis | Not Designated as Hedging Instrument | Foreign currency exchange derivatives
ASSETS:
Assets at fair value	20	62
LIABILITIES:
Liabilities at fair value	43	36
Nonrecurring Basis | Equity securities of private entities | Long-term Investments
ASSETS:
Assets at fair value		98
Level 1 | Recurring Basis
ASSETS:
Assets at fair value	14,772	11,279
Level 1 | Recurring Basis | Money market fund investments | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	14,390	10,871
Level 1 | Recurring Basis | Certificates of deposit | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	87	97
Level 1 | Recurring Basis | International government securities | Short-term Investments
ASSETS:
Assets at fair value	0	0
Level 1 | Recurring Basis | U.S. government securities | Short-term Investments
ASSETS:
Assets at fair value	0	0
Level 1 | Recurring Basis | Corporate debt securities | Short-term Investments
ASSETS:
Assets at fair value	0	0
Level 1 | Recurring Basis | Equity securities with readily determinable fair values | Long-term Investments
ASSETS:
Assets at fair value	295	311
Level 1 | Recurring Basis | Not Designated as Hedging Instrument | Foreign currency exchange derivatives
ASSETS:
Assets at fair value	0	0
LIABILITIES:
Liabilities at fair value	0	0
Level 1 | Nonrecurring Basis | Equity securities of private entities | Long-term Investments
ASSETS:
Assets at fair value		0
Level 2 | Recurring Basis
ASSETS:
Assets at fair value	382	638
Level 2 | Recurring Basis | Money market fund investments | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	0	0
Level 2 | Recurring Basis | Certificates of deposit | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	0	0
Level 2 | Recurring Basis | International government securities | Short-term Investments
ASSETS:
Assets at fair value	41	63
Level 2 | Recurring Basis | U.S. government securities | Short-term Investments
ASSETS:
Assets at fair value	106	151
Level 2 | Recurring Basis | Corporate debt securities | Short-term Investments
ASSETS:
Assets at fair value	215	362
Level 2 | Recurring Basis | Equity securities with readily determinable fair values | Long-term Investments
ASSETS:
Assets at fair value	0	0
Level 2 | Recurring Basis | Not Designated as Hedging Instrument | Foreign currency exchange derivatives
ASSETS:
Assets at fair value	20	62
LIABILITIES:
Liabilities at fair value	$ 43	36
Level 2 | Nonrecurring Basis | Equity securities of private entities | Long-term Investments
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis | Money market fund investments | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis | Certificates of deposit | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis | International government securities | Short-term Investments
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis | U.S. government securities | Short-term Investments
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis | Corporate debt securities | Short-term Investments
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis | Equity securities with readily determinable fair values | Long-term Investments
ASSETS:
Assets at fair value		0
Level 3 | Recurring Basis | Not Designated as Hedging Instrument | Foreign currency exchange derivatives
ASSETS:
Assets at fair value		0
LIABILITIES:
Liabilities at fair value		0
Level 3 | Nonrecurring Basis | Equity securities of private entities | Long-term Investments
ASSETS:
Assets at fair value		$ 98