Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Aug. 03, 2018	Jul. 28, 2017	Aug. 03, 2018	Jul. 28, 2017	Feb. 02, 2018
Income Tax Examination [Line Items]
Effective tax rate	7.50%	29.40%	43.30%	33.40%
Unrecognized tax benefits	$ 1.9		$ 1.9
Unrecognized tax benefits, if recognized, would impact effective tax rate	1.5		1.5
Sears Holdings Corporation \| Other assets
Income Tax Examination [Line Items]
Indemnification receivable, uncertain tax positions	$ 2.6	$ 11.8	$ 2.6	$ 11.8	$ 7.4

Indemnification Asset, Uncertain Tax Positions

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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