Dividends - Additional Information (Detail) (Common Shares, USD $)	12 Months Ended
Feb. 01, 2014
Common Shares
Dividends Payable [Line Items]
Dividend value per share	$ 0.18
Dividend declared date	Mar. 26, 2014
Dividend payable date	May 28, 2014
Dividend record date	May 02, 2014
Ex-dividend date	Apr. 30, 2014

Ex Dividend Date

No definition available.

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Namespace Prefix:	sig_
Data Type:	xbrli:dateItemType
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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

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Period Type:	duration

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

+ Details

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Data Type:	num:perShareItemType
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Period Type:	instant

- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

+ Details

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
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- Details

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