Goodwill and other intangible assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 03, 2017	Jan. 29, 2016	Jan. 30, 2015
Goodwill and other intangible assets
Goodwill	$ 4,338,589	$ 4,338,589
Other intangible assets:
Leasehold interests, gross amount	3,658	4,379
Leasehold interests, accumulated amortization	2,699	3,085
Leasehold interests, net	959	1,294
Trade names and trademarks	1,199,700	1,199,700
Total other intangible assets, gross	1,203,358	1,204,079
Total other intangible assets, accumulated amortization	2,699	3,085
Total other intangible assets, net	1,200,659	1,200,994
Amortization expense	$ 300	$ 900	$ 5,800
Minimum
Other intangible assets:
Leasehold interests, remaining life	1 year	1 year
Maximum
Other intangible assets:
Leasehold interests, remaining life	6 years	7 years