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Restructuring Plans - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 33 Months Ended | 36 Months Ended
--- | --- | --- | --- | ---
Jan. 30, 2021 | Oct. 31, 2020 | Nov. 02, 2019 | May 05, 2018 | Oct. 31, 2020 | Nov. 02, 2019 | Oct. 31, 2020 | Jan. 30, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  | $ 3.6 | $ 9.2 |  | $ 45.2 | $ 59.4 |  |
Signet Path to Brillance |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring plan, length |  |  |  | 3 years |  |  |  |
Restructuring charges |  | 5.6 | $ 10.6 |  | 46.6 | $ 65.2 | $ 251.6 |
Cash payments |  |  |  |  | 43.8 |  |  |
Restructuring cost incurred to date |  | $ 252.0 |  |  | $ 252.0 |  | 252.0 |
Noncash charges |  |  |  |  |  |  | $ 124.0 |
Scenario, Forecast | Minimum | Signet Path to Brillance |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  | $ 200.0
Cash payments | $ 7.0 |  |  |  |  |  |  | 105.0
Restructuring costs incurred | 8.0 |  |  |  |  |  |  |
Scenario, Forecast | Maximum | Signet Path to Brillance |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  | 220.0
Cash payments | 10.0 |  |  |  |  |  |  | $ 115.0
Restructuring costs incurred | $ 12.0 |  |  |  |  |  |  |

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