SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Cash and Cash Equivalents (Details) - Fair Value, Recurring - Fair Value, Inputs, Level 1 - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Cash and Cash Equivalents [Line Items]
Total cash and cash equivalents	$ 13,272	$ 18,133
Cash
Cash and Cash Equivalents [Line Items]
Total cash and cash equivalents	1,750	5,438
Money market funds
Cash and Cash Equivalents [Line Items]
Total cash and cash equivalents	9,399	11,827
Certificates of deposit
Cash and Cash Equivalents [Line Items]
Total cash and cash equivalents	360	450
Commercial papers
Cash and Cash Equivalents [Line Items]
Total cash and cash equivalents	592	268
United States Treasury securities
Cash and Cash Equivalents [Line Items]
Total cash and cash equivalents	$ 1,171	$ 150