Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 30, 2015	Jan. 30, 2015	Oct. 31, 2014	Apr. 04, 2014
Income Tax Examination [Line Items]
Unrecognized tax benefits	$ 8.2
Unrecognized tax benefits, if recognized, would impact effective tax rate	5.3
Amount of interest and penalties recognized	5.5			$ 5.0
Amount of interest and penalties recognized, net of federal benefit	3.6
Other liabilities
Income Tax Examination [Line Items]
Tax reserve for uncertain tax position	13.7
Sears Holdings Corporation
Income Tax Examination [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions	1.2
Sears Holdings Corporation | Deferred tax liabilities
Income Tax Examination [Line Items]
Deferred tax assets	30.4
Sears Holdings Corporation | Other assets
Income Tax Examination [Line Items]
Indemnification receivable, uncertain tax positions	13.5	$ 14.3	$ 14.1	$ 13.7
Indemnification Asset, Uncertain Tax Positions, Adjustment	$ 1.2