Goodwill and Intangibles - Summary of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 30, 2016	Jan. 31, 2015
Goodwill [Roll Forward]
Beginning balance	$ 519.2	$ 26.8
Acquisitions		499.4
Impact of foreign exchange	(3.7)	(7.0)
Ending balance	515.5	519.2
Sterling Jewelers
Goodwill [Roll Forward]
Beginning balance	23.2	23.2
Acquisitions		0.0
Impact of foreign exchange	0.0	0.0
Ending balance	23.2	23.2
Zale Jewelry
Goodwill [Roll Forward]
Beginning balance	492.4	0.0
Acquisitions		499.4
Impact of foreign exchange	(3.7)	(7.0)
Ending balance	488.7	492.4
Piercing Pagoda
Goodwill [Roll Forward]
Beginning balance	0.0	0.0
Acquisitions		0.0
Impact of foreign exchange	0.0	0.0
Ending balance	0.0	0.0
UK Jewelry
Goodwill [Roll Forward]
Beginning balance	0.0	0.0
Acquisitions		0.0
Impact of foreign exchange	0.0	0.0
Ending balance	0.0	0.0
Other
Goodwill [Roll Forward]
Beginning balance	3.6	3.6
Acquisitions		0.0
Impact of foreign exchange	0.0	0.0
Ending balance	$ 3.6	$ 3.6

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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