XML 126 R112.htm IDEA: XBRL DOCUMENT
v3.19.1

Derivatives - Additional Information (Details) oz in Thousands, $ in Millions | 12 Months Ended |
--- | --- | ---
Feb. 02, 2019 USD ($) oz | Feb. 03, 2018 USD ($) oz | Mar. 31, 2015 USD ($)
Derivative [Line Items] |  |  |
Ounces of gold | oz | 89 | 6 |
Maximum |  |  |
Derivative [Line Items] |  |  |
Remaining settlement period | 12 months |  |
Cash Flow Hedging |  |  |
Derivative [Line Items] |  |  |
Expected pre-tax derivative losses | $ 2.0 |  |
Interest rate swaps |  |  |
Derivative [Line Items] |  |  |
Aggregate notional amount |  |  | $ 300.0
Foreign currency contracts | Not Designated as Hedging Instrument |  |  |
Derivative [Line Items] |  |  |
Aggregate notional amount | 111.5 | $ 112.7 |
Foreign currency contracts | Cash Flow Hedging |  |  |
Derivative [Line Items] |  |  |
Aggregate notional amount | $ 22.4 | $ 26.6 |
Remaining settlement period | 12 months | 11 months |
Commodity contracts | Cash Flow Hedging |  |  |
Derivative [Line Items] |  |  |
Remaining settlement period | 20 months | 12 months |

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Derivative, Notional Amount, Gold + References No definition available. + Details
Name: | sig_DerivativeNotionalAmountGold
Namespace Prefix: | sig_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994 + Details
Name: | us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DerivativeRemainingMaturity1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |