Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net loss	$ (1,542,590)	$ (463,157)	$ (696,885)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	201,480	127,519	70,908
Provision for severance benefits	128,214	71,328	43,159
Equity-based compensation	249,345	31,331	20,823
Paid-in-kind interest and accretion of discount on convertible notes	20,148	91,035	75,946
Revaluation of derivative instrument	0	(149,830)	36,782
Inventory and fixed asset losses due to fulfillment center fire	284,825	0	0
Non-cash operating lease expense	258,965	154,739	84,559
Non-cash others	57,978	55,176	(4,437)
Change in operating assets and liabilities:
Accounts receivable, net	(120,206)	(4,312)	(39,976)
Inventories	(527,959)	(504,294)	(279,015)
Other assets	(178,383)	(172,576)	(40,361)
Accounts payable	728,488	1,065,850	416,507
Accrued expenses	206,597	50,835	18,202
Deferred revenue	14,024	31,887	7,753
Other liabilities	(191,504)	(83,977)	(25,808)
Net cash (used in) provided by operating activities	(410,578)	301,554	(311,843)
Investing activities:
Purchases of property and equipment	(673,663)	(484,630)	(217,823)
Proceeds from sale of property and equipment	1,864	507	3,543
Other investing activities	(3,726)	(36,531)	(3,944)
Net cash used in investing activities	(675,525)	(520,654)	(218,224)
Financing activities:
Repurchase of common units and preferred units	0	(97,043)	(114,610)
Proceeds from issuance of Class A common stock upon initial public offering, net of underwriting discounts	3,431,277	0	0
Deferred offering costs paid	(11,618)	0	0
Proceeds from issuance of common stock/units, equity-based compensation plan	62,281	28,613	1,516,378
Proceeds from short-term borrowings	24,722	144,740	103,628
Proceeds from long-term debt, net of issuance costs	408,932	142,170	28,771
Repayment of short-term borrowings	(166,023)	(2,983)	(346,349)
Repayment of long-term debt	(169,575)	(35,141)	(1,882)
Other financing activities	(3,146)	(1,854)	(1,832)
Net cash provided by financing activities	3,576,850	178,502	1,184,104
Effect of exchange rate changes on cash and cash equivalents, and restricted cash	(81,702)	70,365	(22,412)
Net increase in cash and cash equivalents, and restricted cash	2,409,045	29,767	631,625
Cash and cash equivalents, and restricted cash, as of beginning of period	1,401,302	1,371,535	739,910
Cash and cash equivalents, and restricted cash, as of end of period	3,810,347	1,401,302	1,371,535
Supplemental disclosure of cash-flow information:
Cash paid for income taxes, net of refunds	2,588	857	2,540
Cash paid for interest	21,465	23,658	19,064
Non-cash investing and financing activities:
Increase in property and equipment-related accounts payable	45,205	48,236	28,785
Conversion of common units into Class A and Class B common stock	87,064	0	0
Conversion of redeemable convertible preferred units into Class A and Class B common stock	3,465,611	0	0
Conversion of convertible notes into Class A common stock	$ 609,999	$ 0	$ 0