FAIR VALUE MEASUREMENT OF ASSETS AND LIABILITIES - Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Footnote Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash	$ 5,300	$ 6,800
Restricted cash	11	17
Time deposits, current and noncurrent	674	537
Funds receivable and customer accounts	33,643	36,264
Carrying value of non-marketable equity securities which do not have readily determinable fair value	1,800	1,800
Cash, time deposits and funds receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Funds receivable and customer accounts	$ 16,900	$ 18,700