Payment Of Dividends (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended					9 Months Ended
	Nov. 01, 2014	Aug. 02, 2014	May 03, 2014	Feb. 01, 2014	Nov. 02, 2013	Nov. 01, 2014		Nov. 02, 2013
Dividends, Cash [Abstract]
Cash dividend per share	$ 0.18	$ 0.18	$ 0.18	$ 0.15	$ 0.15	$ 0.54		$ 0.45
First Quarter Dividend
Dividends, Cash [Abstract]
Cash dividend per share						$ 0.18	[1]	$ 0.15	[1]
Total dividends						$ 14.4	[1],[2]	$ 12.1	[1]
Second Quarter Dividend
Dividends, Cash [Abstract]
Cash dividend per share						$ 0.18		$ 0.15
Total dividends						14.4	[3]	12.1
Third Quarter Dividend
Dividends, Cash [Abstract]
Cash dividend per share						$ 0.18		$ 0.15
Total dividends						$ 14.4	[4]	$ 12.0

[1] Signet's dividend policy results in the dividend payment date being a quarter in arrears from the declaration date. As a result, the fourth quarter Fiscal 2014 $0.15 per share cash dividend was paid on February 27, 2014 in the aggregate amount of $12.0 million.

[2] The first quarter Fiscal 2015 $0.18 per share cash dividend was paid on May 28, 2014 in the aggregate amount of $14.4 million.

[3] The second quarter Fiscal 2015 $0.18 per share cash dividend was paid on August 27, 2014 in the aggregate amount of $14.4 million.

[4] As of November 1, 2014, $14.4 million has been recorded in accrued expenses and other current liabilities in the condensed consolidated balance sheets reflecting the cash dividend declared on August 26, 2014, which has a record date of October 31, 2014 and a payment date of November 25, 2014.