Borrowing Arrangements - Additional Information (Detail)	3 Months Ended
May 05, 2019 USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity under letter of credit facilities including additional borrowing capacity	$ 70,000,000
Letter of credit facilities, maturity date	Aug. 24, 2019
Outstanding letter of credit facilities	$ 6,168,000
Latest expiration date possible for future letters of credit	Jan. 21, 2020
Standby Letters of Credit
Debt Instrument [Line Items]
Amount issued but undrawn under credit facility	$ 11,716,000
Unsecured Revolving Line Of Credit
Debt Instrument [Line Items]
Current borrowing capacity	500,000,000
Maximum borrowing capacity including additional borrowing capacity	$ 250,000,000
Interest rate description	The interest rates under the credit facility are variable, and may be elected by us as: (i) the London Interbank Offer Rate plus an applicable margin based on our leverage ratio ranging from 0.91% to 1.775% for a revolver borrowing, and 1.0% to 2.0% for the term loan; or (ii) a base rate as defined in the credit facility plus an applicable margin ranging from 0% to 0.775% for a revolver borrowing, and 0% to 1.0% for the term loan.
Unsecured Revolving Line Of Credit \| Maximum
Debt Instrument [Line Items]
Additional borrowing capacity	$ 750,000,000
Unsecured Revolving Line Of Credit \| Margin Based On Leverage Ratio \| Maximum
Debt Instrument [Line Items]
Leverage ratio	1.775%
Unsecured Revolving Line Of Credit \| Margin Based On Leverage Ratio \| Minimum
Debt Instrument [Line Items]
Leverage ratio	0.91%
Unsecured Revolving Line Of Credit \| Base Rate \| Maximum
Debt Instrument [Line Items]
Leverage ratio	0.775%
Unsecured Revolving Line Of Credit \| Base Rate \| Minimum
Debt Instrument [Line Items]
Leverage ratio	0.00%
Unsecured Term Loan Facility
Debt Instrument [Line Items]
Debt instrument face amount	$ 300,000,000
Long term debt	$ 300,000,000
Debt instrument, maturity date	Jan. 08, 2021
Weighted average interest rate	3.61%
Unsecured Term Loan Facility \| Margin Based On Leverage Ratio \| Maximum
Debt Instrument [Line Items]
Leverage ratio	2.00%
Unsecured Term Loan Facility \| Margin Based On Leverage Ratio \| Minimum
Debt Instrument [Line Items]
Leverage ratio	1.00%
Unsecured Term Loan Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Leverage ratio	1.00%
Unsecured Term Loan Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Leverage ratio	0.00%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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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.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

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- Definition

Reflects when the letter of credit facilities terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the letter of credit facilities without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facilities.

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No definition available.

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- Definition

Expiration date for future letters of credit issued under the letter of credit facilities.

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- Definition

Additional borrowing capacity that may be requested upon notice to the lenders.

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No definition available.

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- Definition

Amount available to be drawn upon by standby letter of credit beneficiaries under the credit facility as of the balance sheet date.

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