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Summary of Significant Accounting Policies (Depreciation Estimated Useful Lives) (Details)	12 Months Ended
	Jan. 31, 2021
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	45 years
Furniture, Fixtures and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	2 years
Furniture, Fixtures and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	20 years
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	45 years
Software and Software Development Costs | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	3 years
Software and Software Development Costs | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	6 years

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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