FUNDS RECEIVABLE AND CUSTOMER ACCOUNTS AND INVESTMENTS - Schedule of Unrealized Gains (Losses) on Strategic Investments, Excluding Those Accounted for Using the Equity Method (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Net unrealized gains (losses)	$ (673)	$ 241	$ (709)	$ 92