FAIR VALUE MEASUREMENTS - Financial Assets and Liabilities Carried at Fair Value (Details) $ in Millions	Jun. 30, 2023 USD ($)		Dec. 31, 2022 USD ($)		Jun. 30, 2022
Yanolja | Weighted average cost of capital | Income Approach | Minimum
LIABILITIES:
Equity securities, fair value measurement input	0.105				0.10
Yanolja | Weighted average cost of capital | Income Approach | Maximum
LIABILITIES:
Equity securities, fair value measurement input	0.145				0.14
Yanolja | Terminal EBITDA Multiple | Income Approach | Minimum
LIABILITIES:
Equity securities, fair value measurement input	14				14
Yanolja | Terminal EBITDA Multiple | Income Approach | Maximum
LIABILITIES:
Equity securities, fair value measurement input	16				16
Yanolja | EBITDA Multiple Decrease | Market Approach
LIABILITIES:
Equity securities, fair value measurement input					0.36
Recurring Basis
ASSETS:
Assets at fair value	$ 14,626		$ 14,419
Recurring Basis | Money market fund investments | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	13,597		11,483
Recurring Basis | Certificates of deposit | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	29		60
Recurring Basis | International government securities | Short-term Investments
ASSETS:
Assets at fair value	66		13
Recurring Basis | International government securities | Long-term Investments
ASSETS:
Assets at fair value	9		62
Recurring Basis | U.S. government securities | Short-term Investments
ASSETS:
Assets at fair value	215		130
Recurring Basis | U.S. government securities | Long-term Investments
ASSETS:
Assets at fair value	3		144
Recurring Basis | Corporate debt securities | Short-term Investments
ASSETS:
Assets at fair value	359		32
Recurring Basis | Corporate debt securities | Long-term Investments
ASSETS:
Assets at fair value	24		359
Recurring Basis | Equity securities with readily determinable fair values | Long-term Investments
ASSETS:
Assets at fair value	275		2,071
Recurring Basis | Not Designated as Hedging Instrument | Foreign currency exchange derivatives
ASSETS:
Assets at fair value	49		65
LIABILITIES:
Liabilities at fair value	84		26
Nonrecurring Basis | Equity securities of private companies | Long-term Investments
ASSETS:
Assets at fair value	98	[1]	122	[2]
Level 1 | Recurring Basis
ASSETS:
Assets at fair value	13,901		13,614
Level 1 | Recurring Basis | Money market fund investments | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	13,597		11,483
Level 1 | Recurring Basis | Certificates of deposit | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	29		60
Level 1 | Recurring Basis | International government securities | Short-term Investments
ASSETS:
Assets at fair value	0		0
Level 1 | Recurring Basis | International government securities | Long-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 | U.S. government securities | Long-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 | Corporate debt securities | Long-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	275		2,071
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 companies | Long-term Investments
ASSETS:
Assets at fair value	0	[1]	0	[2]
Level 2 | Recurring Basis
ASSETS:
Assets at fair value	725		805
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	66		13
Level 2 | Recurring Basis | International government securities | Long-term Investments
ASSETS:
Assets at fair value	9		62
Level 2 | Recurring Basis | U.S. government securities | Short-term Investments
ASSETS:
Assets at fair value	215		130
Level 2 | Recurring Basis | U.S. government securities | Long-term Investments
ASSETS:
Assets at fair value	3		144
Level 2 | Recurring Basis | Corporate debt securities | Short-term Investments
ASSETS:
Assets at fair value	359		32
Level 2 | Recurring Basis | Corporate debt securities | Long-term Investments
ASSETS:
Assets at fair value	24		359
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	49		65
LIABILITIES:
Liabilities at fair value	84		26
Level 2 | Nonrecurring Basis | Equity securities of private companies | Long-term Investments
ASSETS:
Assets at fair value	0	[1]	0	[2]
Level 3 | Recurring Basis
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | Money market fund investments | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | Certificates of deposit | Cash Equivalents and Restricted Cash Equivalents
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | International government securities | Short-term Investments
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | International government securities | Long-term Investments
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | U.S. government securities | Short-term Investments
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | U.S. government securities | Long-term Investments
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | Corporate debt securities | Short-term Investments
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | Corporate debt securities | Long-term Investments
ASSETS:
Assets at fair value	0		0
Level 3 | Recurring Basis | Equity securities with readily determinable fair values | Long-term Investments
ASSETS:
Assets at fair value	0		0
Level 3 | 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 3 | Nonrecurring Basis | Equity securities of private companies | Long-term Investments
ASSETS:
Assets at fair value	$ 98	[1]	$ 122	[2]

[1] As of June 30, 2023, the investment in Yanolja was written down to its estimated fair value (see Note 5).

[2] During the year ended December 31, 2022, the investment in Yanolja was written down to its estimated fair value.