Assets and liabilities measured at fair value (Detail) $ in Thousands	Feb. 03, 2017 USD ($)
Reported amount | Current portion of long-term debt obligations
Liabilities:
Long-term obligations	$ 500,950
Reported amount | Long-term obligations
Liabilities:
Long-term obligations	2,710,576
Reported amount | Accrued expenses and other current liabilities
Liabilities:
Deferred Compensation Cash Based Arrangements Liability Current and Noncurrent Fair Value Disclosure	905
Reported amount | Noncurrent Other liabilities
Liabilities:
Deferred Compensation Cash Based Arrangements Liability Current and Noncurrent Fair Value Disclosure	18,707
Fair value measurements on recurring basis | Balance at the end of the period
Liabilities:
Long-term obligations	3,245,049
Deferred Compensation Cash Based Arrangements Liability Current and Noncurrent Fair Value Disclosure	19,612
Fair value measurements on recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Liabilities:
Long-term obligations	2,315,204
Deferred Compensation Cash Based Arrangements Liability Current and Noncurrent Fair Value Disclosure	19,612
Fair value measurements on recurring basis | Significant Other Observable Inputs (Level 2)
Liabilities:
Long-term obligations	$ 929,845