| Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Net income (loss) | - | - | - | 66 |
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| Depreciation and amortization | 201 | 231 | 275 | 433 |
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| Provision for severance benefits | 128 | 161 | 159 | 187 |
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| Equity-based compensation | 249 | 262 | 326 | 433 |
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| Non-cash operating lease expense | 259 | 310 | 338 | 432 |
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| Deferred income taxes | - | - | -884 | 225 |
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| Fulfillment center fire insurance gain | - | - | - | 175 |
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| Non-cash others | -58 | -112 | -140 | -250 |
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| Accounts receivable, net | 120 | 34 | 133 | -209 |
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| Inventories | 528 | 367 | 44 | 376 |
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| Other assets | 178 | 289 | 153 | 152 |
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| Accounts payable | 728 | 444 | 1,514 | 507 |
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| Accrued expenses | 207 | 7 | 43 | 60 |
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| Other liabilities | -192 | -180 | -289 | -213 |
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| Net cash provided by operating activities | -411 | 565 | 2,652 | 1,886 |
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| Purchases of property and equipment | 674 | 824 | 896 | 879 |
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| Proceeds from sale of property and equipment | 2 | 13 | 19 | 9 |
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| Net cash acquired in acquisition | - | - | - | -68 |
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| Other investing activities | 4 | 37 | 50 | 17 |
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| Net cash used in investing activities | -676 | -848 | -927 | -819 |
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| Proceeds from issuance of common stock, equity-based compensation plan | 62 | 18 | 9 | 4 |
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| Repurchase of Class A common stock | - | - | - | 178 |
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| Proceeds from Issuance of Debt | - | - | 572 | 857 |
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| Repayment of short-term borrowings and long-term debt | - | - | 392 | 794 |
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| Proceeds from (Payments for) Other Financing Activities | -3 | -4 | 10 | 42 |
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| Net cash (used in) provided by financing activities | 3,577 | 247 | 199 | -69 |
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| Effect of exchange rate changes on cash and cash equivalents, and restricted cash | -82 | -88 | -14 | -564 |
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| Net increase (decrease) in cash and cash equivalents, and restricted cash | 2,409 | -123 | 1,910 | 434 |
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