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Restructuring Plans - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 30 Months Ended | 36 Months Ended
--- | --- | --- | --- | ---
Aug. 01, 2020 | Aug. 03, 2019 | Aug. 04, 2018 | Jan. 30, 2021 | Aug. 01, 2020 | Aug. 03, 2019 | Aug. 01, 2020 | Feb. 03, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges | $ 28.9 | $ 23.4 |  |  | $ 41.6 | $ 50.2 |  |
Signet Path to Brillance |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring plan, length |  |  | 3 years |  |  |  |  |
Restructuring charges | 28.7 | $ 27.8 |  |  | 41.0 | $ 54.6 | $ 246.0 |
Cash payments |  |  |  |  | 29.3 |  |  |
Restructuring cost incurred to date | $ 246.0 |  |  |  | $ 246.0 |  | 246.0 |
Noncash charges |  |  |  |  |  |  | $ 122.3 |
Scenario, Forecast | Minimum | Signet Path to Brillance |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  | $ 200.0
Cash payments |  |  |  | $ 14.0 |  |  |  | 105.0
Restructuring costs incurred |  |  |  | 15.0 |  |  |  |
Scenario, Forecast | Maximum | Signet Path to Brillance |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  | 220.0
Cash payments |  |  |  | 18.0 |  |  |  | $ 115.0
Restructuring costs incurred |  |  |  | $ 20.0 |  |  |  |

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