Shareholders' Equity - Long-Term Stock Incentive Plan, Restricted share award activity (Details) - USD ($)	12 Months Ended
Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Restricted share awards \| Officers and other key employees
Number of Shares
Restricted share awards outstanding at end of fiscal year	251,924
Long-Term Stock Incentive Plan
Shareholders Equity
Additional grants available under the previous plans (in shares)	0
Long-Term Stock Incentive Plan \| Maximum
Shareholders Equity
Share awards available for issuance	1,000,000
Long-Term Stock Incentive Plan \| Restricted share awards \| Officers and other key employees
Number of Shares
Restricted share awards outstanding at beginning of fiscal year	257,890	211,045	228,682
Restricted share awards vested, including restricted shares repurchased from employees for employees' tax liability	(87,252)	(73,408)	(92,239)
Restricted share awards forfeited	(4,439)	(1,900)	(14,594)
Restricted share awards outstanding at end of fiscal year	251,924	257,890	211,045
Weighted-average grant date fair value
Restricted share awards outstanding at beginning of fiscal year (in dollars per share)	$ 66	$ 63	$ 69
Restricted share awards vested, including restricted shares repurchased from employees for employees' tax liability (in dollars per share)	71	58	78
Restricted share awards forfeited (in dollars per share)	69	62	58
Restricted share awards outstanding at end of fiscal year (in dollars per share)	$ 68	$ 66	$ 63
Long-Term Stock Incentive Plan \| Restricted share awards \| Minimum \| Officers and other key employees
Shareholders Equity
Vesting period	3 years
Long-Term Stock Incentive Plan \| Restricted share awards \| Maximum \| Officers and other key employees
Shareholders Equity
Vesting period	4 years
Long-Term Stock Incentive Plan \| Service-based restricted share awards \| Officers and other key employees
Number of Shares
Restricted share awards granted/issued	42,573	49,726	58,753
Weighted-average grant date fair value
Restricted share awards granted (in dollars per share)	$ 76	$ 79	$ 56
Long-Term Stock Incentive Plan \| Performance-based restricted share awards \| Officers and other key employees
Number of Shares
Restricted share awards issued	$ 43,152	$ 72,427	$ 30,443
Weighted-average grant date fair value
Restricted share awards granted (in dollars per share)	$ 79	$ 57	$ 76

Represents the additional number of shares available for grant under predecessor plans.

No definition available.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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 difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.

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