EMPLOYEE BENEFIT PLANS - Plan Assumptions (Details)	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Pension Benefits
Weighted average assumptions used to determine benefit obligations
Discount rate (as a percent)	3.70%	3.80%
Weighted average assumptions used to determine net periodic benefit expense (income)
Discount rate (as a percent)	3.80%	3.20%	4.20%
Expected long-term return on plan assets (as a percent)	6.30%	6.50%	6.80%
Postretirement Benefit Plan
Weighted average assumptions used to determine benefit obligations
Discount rate (as a percent)	3.70%	3.80%
Weighted average assumptions used to determine net periodic benefit expense (income)
Discount rate (as a percent)	3.80%	3.20%	4.20%
Assumed health care cost trend rates
Assumed annual rate of increase in per capita cost of covered health care benefits for 2017 (as a percent)	8.50%
Ultimate trend rate as of 2024 (as a percent)	5.00%