CASH, CASH EQUIVALENTS, AND INVESTMENTS - Amortized Cost (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 1,731	$ 1,413	$ 405
Equity securities	46
Total cost basis	2,216	1,461
Unrealized Gains	0	0
Unrealized Losses	(1)	0
Fair Value	238
Total fair value	2,215	1,461
Equity Securities, FV-NI, Cash And Cash Equivalents	0
Debt securities, available-for-sale, cash and cash equivalents		1,413
Cash and Cash Equivalents	1,731
Equity Securities, FV-NI, Marketable Securities	46
Marketable Securities	484	48
Corporate debt securities
Cash and Cash Equivalents [Line Items]
Cost Basis	208	30
Unrealized Gains	0	0
Unrealized Losses	(1)	0
Fair Value	207	30
Debt securities, available-for-sale, cash and cash equivalents	0	4
Debt securities, available-for-sale, marketable securities	207	26
Mutual fund
Cash and Cash Equivalents [Line Items]
Mutual fund	200
Other Short-term Investments, Cash And Cash Equivalents	0
Other Short-term Investments, Marketable Securities	200
Commercial paper
Cash and Cash Equivalents [Line Items]
Cost Basis	15	81
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	15	81
Debt securities, available-for-sale, cash and cash equivalents	0	81
Debt securities, available-for-sale, marketable securities	15	0
Asset-backed securities
Cash and Cash Equivalents [Line Items]
Cost Basis	7	13
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	7	13
Debt securities, available-for-sale, cash and cash equivalents	0	0
Debt securities, available-for-sale, marketable securities	7	13
Certificates of deposit
Cash and Cash Equivalents [Line Items]
Cost Basis	5
Unrealized Gains	0
Unrealized Losses	0
Fair Value	5
Debt securities, available-for-sale, cash and cash equivalents	0
Debt securities, available-for-sale, marketable securities	5
Sovereign bonds
Cash and Cash Equivalents [Line Items]
Cost Basis	4
Unrealized Gains	0
Unrealized Losses	0
Fair Value	4
Debt securities, available-for-sale, cash and cash equivalents	0
Debt securities, available-for-sale, marketable securities	4
U.S. agency securities
Cash and Cash Equivalents [Line Items]
Cost Basis		7
Unrealized Gains		0
Unrealized Losses		0
Fair Value		7
Debt securities, available-for-sale, cash and cash equivalents		0
Debt securities, available-for-sale, marketable securities		7
U.S. Treasury securities
Cash and Cash Equivalents [Line Items]
Cost Basis		2
Unrealized Gains		0
Unrealized Losses		0
Fair Value		2
Debt securities, available-for-sale, cash and cash equivalents		0
Debt securities, available-for-sale, marketable securities		2
Cash
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	81	710
Money market funds
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	1,350	$ 618
Time deposit
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 300