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v3.21.1

Accounts receivable, net - Additional Information (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 5 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 | May 01, 2021 | Jun. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Interest income |  | $ 4.0 |
CarVal and Castlelake |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable, remaining purchase price of receivables sold, percentage | 5.00% |  |
CarVal | Scenario, Forecast |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Sale of receivables, additional percentage purchased |  |  | 50.00%
Genesis Financial Solutions | Scenario, Forecast |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Sale of receivables, additional percentage purchased |  |  | 50.00%

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- Definition Accounts Receivable, Remaining Purchase Price of Receivables Sold, Percentage + References No definition available. + Details
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Namespace Prefix: | sig_
Data Type: | num:percentItemType
Balance Type: | na
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- Definition Sale of Receivables, Additional Percentage Purchased + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- 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
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- Definition Amount of interest income earned from interest bearing assets classified as other. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |