Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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-Publisher FASB
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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisitions (Details Textual) $ / shares in Units, $ in Millions, $ in Millions	Jun. 23, 2017 USD ($)	May 20, 2016 CAD ($) $ / shares	May 20, 2016 USD ($)	Feb. 02, 2018 USD ($)	Feb. 03, 2017 USD ($)	May 20, 2016 USD ($)	Jan. 29, 2016 USD ($)	Jan. 30, 2015 USD ($)
Business Acquisition [Line Items]
Goodwill				$ 1,307	$ 1,082		$ 154	$ 154
Maintenance Supply Headquarters [Member]
Business Acquisition [Line Items]
Cash consideration	$ 513
Intangible assets acquired	259
Goodwill	160
Goodwill expected to be tax deductible	160
Maintenance Supply Headquarters [Member] \| Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 34
Weighted average useful life	15 years
Maintenance Supply Headquarters [Member] \| Customer Lists [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 225
Weighted average useful life	20 years
RONA inc [Member]
Business Acquisition [Line Items]
Cash consideration		$ 3,100	$ 2,367
Intangible assets acquired						$ 310
Goodwill						971
Goodwill expected to be tax deductible						107
RONA inc [Member] \| Unsecured Debentures [Member]
Business Acquisition [Line Items]
Current liabilities assumed		$ 118				91
RONA inc [Member] \| Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets acquired						204
Weighted average useful life		15 years	15 years
RONA inc [Member] \| Dealer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired						$ 106
Weighted average useful life		20 years	20 years
RONA inc [Member] \| Common Class A [Member]
Business Acquisition [Line Items]
Business acquisition, share price \| $ / shares		$ 24