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Description of Business and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, shares in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 15, 2021 USD ($) $ / shares shares | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2023 USD ($) numberOfOperatingSegment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of operating segments | numberOfOperatingSegment |  |  |  | 2 |  |
Advertising expenses |  |  |  | $ 711,000,000 | $ 605,000,000 | $ 433,000,000
Accounts receivable, net |  |  | $ 64,000,000 | 71,000,000 | 64,000,000 |
Inventory and fixed asset losses due to fulfillment center fire |  |  |  | 0 | 0 | 285,000,000
Impairment losses of long-lived assets, including intangible assets |  |  |  | $ 0 | $ 0 | 0
Fire |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Refundable insurance advance payment |  | $ 59,000,000 | $ 79,000,000 |  |  |
Cost of sales | Fire |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Inventory and fixed asset losses due to fulfillment center fire |  |  |  |  |  | 158,000,000
Operating, general and administrative | Fire |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Inventory and fixed asset losses due to fulfillment center fire |  |  |  |  |  | $ 138,000,000
Cash and Cash Equivalents | Financial Institutions | Two Financial Institutions |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk (in percentage) |  |  |  | 47.00% |  |
Cash and Cash Equivalents | Financial Institutions | Three Financial Institutions |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk (in percentage) |  |  |  |  | 70.00% |
Accounts Receivable | Customer Concentration Risk | Three Payment Processing Companies |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk (in percentage) |  |  |  | 51.00% | 41.00% |
Options |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 4 years |  |
Common Class A |  |  |  |  |  |
Basis of Presentation of Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) | shares | 100 |  |  |  |  |
Sale of stock, price per share (in usd per share) | $ / shares | $ 35.00 |  |  |  |  |
Proceeds from sale of stock, net | $ 3,400,000,000 |  |  |  |  |

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