COMPANY-SPONSORED BENEFIT PLANS - ASSUMPTIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Weighted average assumptions used to determine pension benefits and other benefits
Number of years in which the Company average annual return rate has been at the current rate	20 years
Average annual rate of return for the past 20 years (as a percent)	7.77%
Period of recognition of gains or losses on plan assets	5 years
Pension Benefits
Weighted average assumptions used to determine pension benefits and other benefits
Discount rate - Benefit obligation (as a percent)	4.25%	4.62%	3.87%
Discount rate - Net periodic benefit cost (as a percent)	4.62%	3.87%	4.99%
Expected long-term rate of return on plan assets (as a percent)	7.40%	7.44%	7.44%
Rate of compensation increase - Net periodic benefit cost (as a percent)	2.71%	2.85%	2.86%
Rate of compensation increase - Benefit obligation (as a percent)	2.72%	2.71%	2.85%
Increase in discount rate used to determine pension benefit obligation, as compared to prior year (in basis points)	100
Decrease in pension benefit obligation due to change in discount rate	$ 510
Pension plan's average rate of return for the 10 calendar years ended December 31, net of all investment management fees and expenses (as a percent)	5.81%
Measurement period for the pension plan's average annual rate of return, rate in calendar years	10 years
Percentage increase in value of all investments in Qualified Plans, net of investment management fees and expenses	6.90%
Other Benefits
Weighted average assumptions used to determine pension benefits and other benefits
Discount rate - Benefit obligation (as a percent)	4.18%	4.44%	3.74%
Discount rate - Net periodic benefit cost (as a percent)	4.44%	3.74%	4.68%