Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net loss	$ (427,339)	$ (398,073)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	34,449	35,474
Stock-based compensation	164,229	159,978
Amortization of premium on marketable securities	1,542	486
Accretion of discount on marketable securities	(361)	(7,826)
Amortization of debt discount and issuance costs	8,471	0
Loss on sale and disposal of assets, net	289	3,228
Other	2,881	87
Changes in operating assets and liabilities, net effects of acquisition
Prepaid expenses and other assets	242	(83,653)
Operating lease right-of-use assets	14,966	20,257
Accounts payable	(11,123)	500,004
Insurance reserves	71,352	(403,330)
Accrued and other liabilities	71,391	(25,338)
Lease liabilities	(10,453)	(8,220)
Net cash used in operating activities	(79,464)	(206,926)
Cash flows from investing activities
Purchases of marketable securities	(981,743)	(1,179,343)
Purchase of non-marketable security	0	(10,000)
Purchases of term deposits	(75,000)	(75,000)
Proceeds from sales of marketable securities	17,099	406,508
Proceeds from maturities of marketable securities	1,169,796	1,661,458
Proceeds from maturity of term deposit	36,000	30,000
Purchases of property and equipment and scooter fleet	(10,685)	(34,476)
Cash paid for acquisitions, net of cash acquired	3	(12,440)
Sales of property and equipment	5,653	960
Net cash provided by (used in) investing activities	161,123	787,667
Cash flows from financing activities
Repayment of loans	(9,984)	(6,087)
Proceeds from exercise of stock options and other common stock issuances	3,244	2,372
Taxes paid related to net share settlement of equity awards	(7,652)	(6,762)
Principal payments on finance lease obligations	(9,894)	(6,167)
Net cash provided by financing activities	(24,286)	(16,644)
Effect of foreign exchange on cash, cash equivalents and restricted cash and cash equivalents	34	(120)
Net increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	57,407	563,977
Beginning of period	438,485	564,465
End of period	495,892	1,128,442
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	495,892	1,128,442
Non-cash investing and financing activities
Purchases of property and equipment, and scooter fleet not yet settled	26,616	11,049
Right-of-use assets acquired under finance leases	1,824	0
Right-of-use assets acquired under operating leases	3,177	19,861
Remeasurement of finance and operating lease right of use assets for lease modification	(3,582)	0
Settlement of pre-existing right-of-use assets under operating leases in connection with acquisition of Flexdrive	0	133,088
Settlement of pre-existing lease liabilities under operating leases in connection with acquisition of Flexdrive	$ 0	$ 130,089