Assets and liabilities measured at fair value (Detail) $ in Thousands	May 04, 2018 USD ($)
Noncurrent Other liabilities
Liabilities:
Deferred compensation	$ 23,201
Reported amount | Current portion of long-term debt obligations
Liabilities:
Long-term obligations	1,889
Reported amount | Long-term obligations
Liabilities:
Long-term obligations	2,862,497
Reported amount | Accrued expenses and other current liabilities
Liabilities:
Deferred compensation	2,285
Fair value measurements on recurring basis | Balance at the end of the period
Liabilities:
Long-term obligations	2,850,917
Deferred compensation	25,486
Fair value measurements on recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Liabilities:
Long-term obligations	2,463,809
Deferred compensation	25,486
Fair value measurements on recurring basis | Significant Other Observable Inputs (Level 2)
Liabilities:
Long-term obligations	$ 387,108