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Loans, overdrafts and long-term debt - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Nov. 03, 2018 | Oct. 28, 2017 | Nov. 03, 2018 | Oct. 28, 2017 | Feb. 03, 2018
Debt Instrument [Line Items] |  |  |  |  |
Amortization of financing costs |  |  | $ 1,500,000 | $ 3,200,000 |
Credit Facility | Revolving Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, maximum borrowing capacity | $ 700,000,000 |  | 700,000,000 |  |
Capitalized fees | 2,600,000 |  | 2,600,000 |  |
Accumulated amortization of noncurrent deferred finance costs | 1,500,000 | $ 1,100,000 | 1,500,000 | 1,100,000 | $ 1,200,000
Amortization of financing costs | 100,000 | 100,000 | 300,000 | 300,000 |
Letters of credit outstanding | $ 14,600,000 | $ 15,700,000 | $ 14,600,000 | $ 15,700,000 | 15,700,000
Weighted average interest rate | 3.62% | 2.45% | 3.62% | 2.45% |
Credit Facility | Term Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 357,500,000.0 |  | $ 357,500,000.0 |  |
Capitalized fees | 6,200,000 |  | 6,200,000 |  |
Accumulated amortization of noncurrent deferred finance costs | 4,100,000 | $ 3,300,000 | 4,100,000 | $ 3,300,000 | 3,500,000
Amortization of financing costs | $ 200,000 | $ 200,000 | $ 600,000 | $ 600,000 |
Weighted average interest rate | 3.44% | 2.34% | 3.44% | 2.34% |
Signet UK Finance plc | Senior Unsecured Notes Due in 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 400,000,000 |  | $ 400,000,000 |  |
Capitalized fees | 7,000,000 |  | 7,000,000 |  |
Accumulated amortization of noncurrent deferred finance costs | 3,100,000 | $ 2,400,000 | 3,100,000 | $ 2,400,000 | $ 2,600,000
Amortization of financing costs | $ 200,000 | $ 200,000 | $ 500,000 | $ 500,000 |
Stated interest rate | 4.70% |  | 4.70% |  |

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