Accounting for Share-Based Payments - Weighted Average Assumptions (Details) - Employee Stock Option - $ / shares	12 Months Ended
Jan. 31, 2020	Feb. 01, 2019	Feb. 02, 2018
Weighted-average assumptions used:
Expected volatility	23.00%	23.30%	23.60%
Dividend yield	1.73%	1.71%	1.68%
Risk-free interest rate	2.28%	2.71%	2.14%
Expected term, in years	6 years 4 months 17 days	6 years 6 months 29 days	6 years 5 months 4 days
Weighted-average grant-date fair value (in dollars per share)	$ 23.66	$ 21.12	$ 18.30

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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