RELATED PARTY TRANSACTIONS (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2017 USD ($) item	Oct. 29, 2016 USD ($)	Oct. 28, 2017 USD ($) item	Oct. 29, 2016 USD ($)	Jan. 28, 2017 USD ($)
Related Party Transactions
Long-term debt	$ 2,847,245	$ 2,759,658	$ 2,847,245	$ 2,759,658	$ 2,754,312
The Sponsors
Related Party Transactions
Percentage owned by related party			40.00%
The Blackstone Group | Term loan credit facility
Related Party Transactions
Long-term debt	71,700		$ 71,700
The Blackstone Group | Store Inventory Count Services | Selling, General and Administrative Expenses
Related Party Transactions
Expenses recognized	2,300	2,100	6,000	5,900
The Blackstone Group | Lease Services | Cost of Sales and Occupancy Expense
Related Party Transactions
Expenses recognized	1,900	1,400	5,100	3,500
The Blackstone Group | Transportation services | Cost of Sales and Occupancy Expense
Related Party Transactions
Expenses recognized	$ 300	$ 200	$ 700	$ 700
Bain Capital or The Blackstone Group
Related Party Transactions
Number of directors | item	2		2