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Fair Value Hierarchy for Financial Assets (Cash, Cash Equivalents and Short-Term Investments) Measured at Fair Value on Recurring Basis (Detail) - USD ($)		Feb. 02, 2019	Feb. 03, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		$ 333,330,000	$ 413,613,000
Short-term investments		92,135,000	0
Total		425,465,000	413,613,000
Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		108,216,000	184,107,000
Interest Bearing Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		165,274,000	174,577,000
Fair Value, Measurements, Recurring | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		333,330,000	413,613,000
Short-term investments	[1]	92,135,000
Total		425,465,000
Fair Value, Measurements, Recurring | Carrying Amount | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		59,840,000	54,929,000
Short-term investments	[1]	22,135,000
Fair Value, Measurements, Recurring | Carrying Amount | Certificates of Deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	[1]	70,000,000
Fair Value, Measurements, Recurring | Carrying Amount | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		108,216,000	184,107,000
Fair Value, Measurements, Recurring | Carrying Amount | Interest Bearing Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		165,274,000	174,577,000
Fair Value, Measurements, Recurring | Fair Value | Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		333,330,000	413,613,000
Short-term investments	[1]	92,135,000
Total		425,465,000
Fair Value, Measurements, Recurring | Fair Value | Commercial Paper | Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		59,840,000	54,929,000
Short-term investments	[1]	22,135,000
Fair Value, Measurements, Recurring | Fair Value | Certificates of Deposit | Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	[1]	70,000,000
Fair Value, Measurements, Recurring | Fair Value | Cash | Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		108,216,000	184,107,000
Fair Value, Measurements, Recurring | Fair Value | Interest Bearing Deposits | Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		$ 165,274,000	$ 174,577,000
[1] Please see Note 2 to the Consolidated Financial Statements for a description of what we consider cash-equivalents and short-term investments.

X

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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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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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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