Debt (Narrative) (Details)	12 Months Ended
Feb. 03, 2018 USD ($) note	Jan. 28, 2017 USD ($) note
Debt Instrument [Line Items]
Number of unsecured senior notes held \| note	3	3
Unamortized discount and debt issuance costs	$ 3,000,000	$ 3,500,000
Amount of borrowings outstanding	0
Collateral trust	57,100,000	56,600,000
Unsecured Series A and B Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of unsecured senior notes	150,000,000
Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity	600,000,000
Sublimit for issuance of standby letters of credit	300,000,000
Maximum borrowing capacity for revolving credit facility (up to)	$ 200,000,000
Basis points margin over LIBOR	1.00%
Standby Letters of Credit
Debt Instrument [Line Items]
Letters of credit	$ 8,700,000	11,600,000
Trade Letters Of Credit
Debt Instrument [Line Items]
Letters of credit	$ 20,700,000	$ 26,500,000
Senior Notes due 2024 \| 3.375% Senior Notes due 2024
Debt Instrument [Line Items]
Unsecured senior notes interest rate (in percentage)	3.375%	3.375%
Aggregate principal amount of unsecured senior notes	$ 250,000,000
Senior Notes due 2018 \| 6.38% Series A Senior Notes due 2018
Debt Instrument [Line Items]
Unsecured senior notes interest rate (in percentage)	6.38%	6.38%
Aggregate principal amount of unsecured senior notes	$ 85,000,000
Senior Notes due 2021 \| 6.53% Series B Senior Notes due 2021
Debt Instrument [Line Items]
Unsecured senior notes interest rate (in percentage)	6.53%	6.53%
Aggregate principal amount of unsecured senior notes	$ 65,000,000
Level 1
Debt Instrument [Line Items]
Unsecured senior notes estimated fair value	$ 411,000,000	$ 419,000,000

Cash collateral for insurance obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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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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