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Acquisitions - Narrative (Details) - USD ($) |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 19, 2022 | Nov. 17, 2021 | Mar. 29, 2021 | Apr. 30, 2022 | Jan. 28, 2023 | Jan. 29, 2022 | Jan. 30, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration |  |  |  |  | $ 391,800,000 | $ 515,800,000 | $ 0
Domestic Tax Authority |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Net operating loss carry forwards |  |  |  |  | 39,200,000 |  |
Rocksbox |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration |  |  | $ 14,600,000 |  |  |  |
Business combination, acquisition related costs |  |  |  |  |  | 1,400,000 |
Diamonds Direct USA Inc. |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration |  | $ 503,100,000 |  |  |  |  |
Business combination, acquisition related costs |  |  |  |  |  | $ 5,000,000 |
Cash acquired from acquisition |  | 14,200,000 |  |  |  |  |
Additional payment |  |  |  | $ 1,900,000 |  |  |
Intangible assets |  | 126,000,000.0 |  |  |  |  |
Goodwill, expected tax deductible amount |  | 0 |  |  |  |  |
Diamonds Direct USA Inc. | Trade names |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets |  | $ 126,000,000 |  |  |  |  |
Blue Nile |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration | $ 389,900,000 |  |  |  |  |  |
Business combination, acquisition related costs |  |  |  |  | $ 4,200,000 |  |
Cash acquired from acquisition | 16,600,000 |  |  |  |  |  |
Goodwill, expected tax deductible amount | 0 |  |  |  |  |  |
Other carryforwards | 71,000,000 |  |  |  |  |  |
Blue Nile | Domestic Tax Authority |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Net operating loss carry forwards | 85,000,000 |  |  |  |  |  |
Blue Nile | Trade names |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets | $ 96,000,000 |  |  |  |  |  |

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