BORROWINGS (Senior Unsecured Notes) (Details) - USD ($)				6 Months Ended
		Nov. 21, 2014	Oct. 20, 2014	Jul. 29, 2017	Jul. 30, 2016	Jan. 28, 2017
Debt Instrument [Line Items]
Proceeds from debt issuances	[1]			$ 330,000,000	$ 1,228,000,000
Unsecured Senior Notes
Debt Instrument [Line Items]
Maximum amount of common stock stockholders can purchase with notes and warrants			$ 625,000,000
Debt Instrument, interest rate, stated percentage		8.00%	8.00%
Long-term debt		$ 625,000,000
Proceeds from debt issuances		625,000,000
Remaining discount on debt		$ 278,000,000		169,000,000	218,000,000	$ 195,000,000
Effective interest rate on debt		11.55%
Amortization of debt discount				26,000,000	21,000,000
Carrying amount of long-term debt				$ 454,000,000	$ 404,000,000	$ 428,000,000

[1] Proceeds in 2017 include $245 million from related parties in connection with the Line of Credit Loans. Proceeds in 2016 include $496 million from related parties in connection with the 2016 Term Loan and 2016 Secured Loan Facility. See Notes 2 and 11 for further information.