Accounts Receivable, Net - Portfolio of Accounts Receivable (Details) - USD ($) $ in Millions	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 1,756.4	$ 1,567.6
Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	1,725.9	1,552.9	$ 1,356.0
Other accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	16.9	14.7
Sterling Jewelers | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	1,725.9	1,552.9
Zale Jewelry | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 13.6	$ 0.0