Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000745732 (http://www.sec.gov/CIK)

Debt Disclosure [Abstract]	Period [Axis]
	2016-01-31 - 2017-01-28
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Unsecured senior debt, net of unamortized discounts and debt issuance costs, as of January 28, 2017 and January 30, 2016 consisted of the following: ($000)   2016   2015 6.38% Series A Senior Notes due 2018   $ 84,939   $ 84,906 6.53% Series B Senior Notes due 2021   64,902   64,882 3.375% Senior Notes due 2024   246,652   246,237 Total   $ 396,493   $ 396,025
Schedule of Maturities of Long-term Debt	The following table shows scheduled annual principal payments on Long-term debt: ($000)       2017     $ — 2018     $ 85,000 2019     $ — 2020     $ — 2021     $ 65,000 Thereafter     $ 250,000
Interest Income and Interest Expense Disclosure	The table below shows the components of interest expense and income for fiscal 2016, 2015, and 2014: ($000)   2016   2015   2014 Interest expense on long-term debt   $ 18,573   $ 18,568   $ 12,990 Other interest expense   1,022   1,252   1,230 Capitalized interest   (26 )   (6,530 )   (10,825 ) Interest income   (3,081 )   (678 )   (411 ) Interest expense, net   $ 16,488   $ 12,612   $ 2,984