CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities:
Net loss	$ (862)	$ (3,264)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	44	17
Impairment of long-lived assets	47	0
Provision for credit losses	28	62
Share-based compensation	494	1,253
Change in fair value of convertible notes and warrant liability	0	2,045
Other	8	0
Changes in operating assets and liabilities:
Segregated securities under federal and other regulations	0	85
Receivables from brokers, dealers, and clearing organizations	13	0
Receivables from users, net	2,565	(2,805)
Securities borrowed	(139)	0
Deposits with clearing organizations	127	(91)
Operating lease right-of-use assets	8	(86)
Current and non-current prepaid expenses	29	(112)
Other current and non-current assets	(3)	771
Accounts payable and accrued expenses	(45)	118
Payables to users	(1,080)	914
Securities loaned	(2,228)	1,209
Current and non-current operating lease liabilities	(2)	100
Other current and non-current liabilities	(37)	(826)
Net cash used in operating activities	(1,033)	(610)
Investing activities:
Purchase of property, software, and equipment	(25)	(46)
Capitalization of internally developed software	(22)	(13)
Acquisitions of a business, net of cash acquired	0	(119)
Purchase of investments	(27)	0
Sales of investments	19	0
Other	(16)	(2)
Net cash used in investing activities	(71)	(180)
Financing activities:
Proceeds from issuance of common stock in connection with initial public offering, net of offering costs	0	2,058
Proceeds from issuance of common stock under the Employee Stock Purchase Plan	13	0
Taxes paid related to net share settlement of equity awards	(9)	(412)
Proceeds from issuance of convertible notes and warrants	0	3,552
Payments of debt issuance costs	(10)	0
Draws on credit facilities	21	1,958
Repayments on credit facilities	(21)	(1,958)
Proceeds from exercise of stock options, net of repurchases	6	12
Net cash provided by financing activities	0	5,210
Effect of foreign exchange rate changes on cash and cash equivalents	(2)	0
Net increase (decrease) in cash, cash equivalents, segregated cash and restricted cash	(1,106)	4,420
Cash, cash equivalents, segregated cash and restricted cash, beginning of the period	10,270	6,190
Cash, cash equivalents, segregated cash and restricted cash, end of the period	9,164	10,610
Cash and cash equivalents, end of the period	6,187	6,167
Segregated cash, end of the period	2,954	4,418
Restricted cash (current and non-current), end of the period	23	25
Cash, cash equivalents, segregated cash and restricted cash, end of the period	9,164	10,610
Supplemental disclosures:
Cash paid for interest	6	6
Cash paid for income taxes, net of refund received	4	3
Non-cash operating activities:
Asset related to user cryptocurrencies safeguarding obligation	9,361	0
Total user cryptocurrencies safeguarding obligation and corresponding asset	9,361	0
Non-cash financing activities:
Unpaid offering costs in connection with initial public offering	$ 0	$ 5