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Restructuring Plans - Restructuring and Related Costs (Details) - USD ($) $ in Millions | 3 Months Ended | 27 Months Ended
--- | --- | ---
May 02, 2020 | May 04, 2019 | May 02, 2020
Restructuring Cost and Reserve [Line Items] |  |  |
Inventory charges | $ (0.4) | $ 0.0 |
Restructuring charges | 12.7 | 26.8 |
Signet Path to Brillance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 12.3 | 26.8 | $ 217.3
Signet Path to Brillance | Cost of sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Inventory charges | (0.4) | 0.0 |
Signet Path to Brillance | Restructuring Charges |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Other Plan related expenses | 12.7 | $ 26.8 |
Inventory charges | Signet Path to Brillance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | (0.4) |  | 71.0
Termination benefits | Signet Path to Brillance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 2.9 |  | 28.7
Store closure and other costs | Signet Path to Brillance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 9.8 |  | $ 117.6

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