Warranty Deferred Revenue (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Aug. 02, 2014	Aug. 03, 2013		Aug. 02, 2014	Aug. 03, 2013		Apr. 23, 2013
Sterling Jewelers
Deferred Revenue [Line Items]
ESP deferred revenue, beginning of period	$ 619.6			$ 601.2	$ 549.7		$ 563.4
Plans sold	53.9	46.1		118.1	101.4
Revenue recognized	(46.9)	(42.5)		(92.7)	(84.1)
ESP deferred revenue, end of period	626.6	567.0		626.6	567.0		563.4
Zale Jewelry
Deferred Revenue [Line Items]
ESP deferred revenue, beginning of period						[1]		[1]
Plans acquired	93.0		[1]	93.0		[1]
Plans sold	19.3		[1]	19.3		[1]
Revenue recognized	(13.2)		[1]	(13.2)		[1]
ESP deferred revenue, end of period	$ 99.1		[1]	$ 99.1		[1]		[1]

[1] n/a Not applicable as the Acquisition occurred during Fiscal 2015.