Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (1,294,702)	$ (2,246,189)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	121,650	84,352
Stock-based compensation	432,498	1,394,900
Amortization of premium on marketable securities	4,083	342
Accretion of discount on marketable securities	(13,434)	(31,209)
Amortization of debt discount and issuance costs	12,501	0
Deferred income tax	(46,324)	0
Loss on disposal of assets	28,074	24,332
Gain on sale of assets	(9,895)	0
Other	6,332	801
Changes in operating assets and liabilities
Prepaid expenses and other assets	84,789	(141,401)
Operating lease right-of-use assets	47,476	70,551
Accounts payable	(15,153)	(733)
Insurance reserves	(455,834)	564,663
Accrued and other liabilities	16,359	283,902
Lease liabilities	(32,706)	(63,822)
Net cash used in operating activities	(1,114,286)	(59,511)
Cash flows from investing activities
Purchases of marketable securities	(3,368,614)	(4,836,182)
Purchase of non-marketable security	(10,000)	0
Purchases of term deposits	(718,811)	(105,000)
Proceeds from sales of marketable securities	476,196	893,429
Proceeds from maturities of marketable securities	4,011,701	2,656,249
Proceeds from maturity of term deposit	232,811	0
Purchases of property and equipment and scooter fleet	(70,844)	(128,431)
Sales of property and equipment and held for sale assets	14,945	4,007
Cash paid for acquisitions, net of cash acquired	(12,376)	(1,801)
Net cash provided by (used in) investing activities	555,008	(1,517,729)
Cash flows from financing activities
Proceeds from issuance of common stock in initial public offering, net of underwriting commissions, offering costs and reimbursements	0	2,484,101
Repayment of loans	(35,592)	0
Proceeds from issuance of convertible senior notes	734,065	0
Payment of debt issuance costs	(824)	0
Purchase of capped call	(132,681)	0
Proceeds from exercise of stock options and other common stock issuances	14,610	14,914
Taxes paid related to net share settlement of equity awards	(14,515)	(942,780)
Principal payments on finance lease obligations	(29,042)	0
Net cash provided by financing activities	536,021	1,556,235
Effect of foreign exchange on cash, cash equivalents and restricted cash and cash equivalents	(286)	196
Net increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	(23,543)	(20,809)
Beginning of period	564,465	706,486
End of period	540,922	685,677
Reconciliation of cash, cash equivalents and restricted cash and cash equivalents to the consolidated balance sheets
Total cash, cash equivalents and restricted cash and cash equivalents	540,922	685,677
Non-cash investing and financing activities
Purchases of property and equipment, and scooter fleet not yet settled	45,291	9,316
Deferred offering costs accrued, unpaid	0	72
Right-of-use assets acquired under finance and operating leases	29,499	196,730
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	0	5,152,047
Reclassification of deferred offering costs to additional paid-in capital upon initial public offering	0	7,690
Settlement of pre-existing right-of-use assets under operating leases in connection with acquisition of Flexdrive	133,088	0
Settlement of pre-existing lease liabilities under operating leases in connection with acquisition of Flexdrive	$ 130,089	$ 0