Stock Incentive Plan - Additional Information (Detail) (USD $)	12 Months Ended
Jan. 31, 2015 Director	Feb. 01, 2014	Feb. 02, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares approved for issuance under Stock Incentive Plan	347,800,000
Shares available for future grants	40,400,000
Unrecognized compensation cost related to nonvested share-based compensation	$ 124,600,000
Unrecognized compensation cost weighted-average recognition period, years	2 years
Options granted at market price in percentage	100.00%
Vesting period of grant, years	3 years
Term in which vesting period starts after grant, years	1 year
Maximum term of grant, years	9 years
Intrinsic value of options exercised	286,300,000	289,800,000	223,800,000
Options outstanding expected to vest represents total unvested options adjusted for anticipated forfeitures	9,000,000
Performance-based stock, granted	717,500	743,576	730,500
Shares granted weighted average grant date fair value	$ 62.85	$ 51.02	$ 41.74
Fair value of performance-based restricted stock that vested	21,400,000	14,200,000	9,700,000
Performance based restricted stock awarded	281,076
Annual deferred share awards, common stock value	$ 70,000
Number of annual deferred share awards awarded to outside directors	2
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock and other awards, period	3 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock and other awards, period	1 year
Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards that vest immediately and is payable, with accumulated dividends	1
Deferred shares outstanding	283,802
Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of grant, years	10 years

Number of annual deferred share awards awarded to outside directors.

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Number Of Awards That Vest Immediately And Is Payable Under The Stock Incentive Plan

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Options granted at market price in percentage

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Options outstanding expected to vest represents total unvested options adjusted for anticipated forfeitures.

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Performance Based Restricted Stock And Other Awards Period

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The total fair value of shares issued during the period under a deferred compensation arrangement.

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Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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