COMPANY-SPONSORED BENEFIT PLANS - BENEFIT COST, PBO/ABO, FUTURE PAYMENTS, ASSET ALLOCATIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
BENEFIT PLANS
Estimated future employer contributions in next fiscal year	$ 110
Defined Benefit Plan, Assumed Health Care Cost Trend Rates
Initial health care cost trend rate (as a percent)	6.10%
Ultimate health care cost trend rate (as a percent)	4.50%
One-percentage-point change in assumed health care cost trend rates
Effect of a one-percentage-point increase to total of service and interest cost components	$ 2
Effect of a one-percentage-point decrease to total of service and interest cost components	(2)
Effect of a one-percentage-point increase to post-retirement benefit obligation	24
Effect of a one-percentage-point decrease to post-retirement benefit obligation	(21)
Pension Benefits
Estimated future benefit payments
2017	246
2018	242
2019	253
2020	265
2021	276
2022-2026	$ 1,522
Target and actual pension plan asset allocations
Target allocations (as a percent)	100.00%
Total actual allocations (as a percent)	100.00%	100.00%
Pension Benefits | Global equity securities
Target and actual pension plan asset allocations
Target allocations (as a percent)	13.20%
Total actual allocations (as a percent)	14.30%	14.90%
Pension Benefits | Emerging market equity securities
Target and actual pension plan asset allocations
Target allocations (as a percent)	5.80%
Total actual allocations (as a percent)	6.50%	5.20%
Pension Benefits | Investment grade debt securities
Target and actual pension plan asset allocations
Target allocations (as a percent)	8.00%
Total actual allocations (as a percent)	12.00%	11.30%
Pension Benefits | High yield debt securities
Target and actual pension plan asset allocations
Target allocations (as a percent)	14.00%
Total actual allocations (as a percent)	14.20%	11.90%
Pension Benefits | Private Equity
Target and actual pension plan asset allocations
Target allocations (as a percent)	6.00%
Total actual allocations (as a percent)	7.50%	7.40%
Pension Benefits | Hedge Funds
Target and actual pension plan asset allocations
Target allocations (as a percent)	39.00%
Total actual allocations (as a percent)	35.20%	36.00%
Pension Benefits | Real Estate
Target and actual pension plan asset allocations
Target allocations (as a percent)	3.00%
Total actual allocations (as a percent)	2.80%	3.90%
Pension Benefits | Other
Target and actual pension plan asset allocations
Target allocations (as a percent)	11.00%
Total actual allocations (as a percent)	7.50%	9.40%
Qualified Plans
Components of net periodic benefit cost:
Service cost	$ 68	$ 62	$ 48
Interest cost	177	154	169
Expected return on plan assets	(238)	(230)	(228)
Amortization of:
Actuarial (gain) loss	60	93	46
Other	3
Net periodic benefit cost	70	79	35
Projected benefit obligation ("PBO"), accumulated benefit obligation ("ABO") and the fair value of plan assets for all Company-sponsored pension plans:
PBO at end of fiscal year	4,140	3,922	4,102
ABO at end of fiscal year	3,997	3,786
Fair value of plan assets at end of year	3,138	3,045	3,189
Non-Qualified Plans
Components of net periodic benefit cost:
Service cost	2	3	3
Interest cost	14	12	13
Amortization of:
Actuarial (gain) loss	8	9	4
Net periodic benefit cost	24	24	20
Projected benefit obligation ("PBO"), accumulated benefit obligation ("ABO") and the fair value of plan assets for all Company-sponsored pension plans:
PBO at end of fiscal year	316	290	304
ABO at end of fiscal year	297	280
Other Benefits
Components of net periodic benefit cost:
Service cost	9	10	11
Interest cost	10	9	13
Amortization of:
Prior service cost	(8)	(11)	(7)
Actuarial (gain) loss	(10)	(7)	(8)
Net periodic benefit cost	1	1	9
Projected benefit obligation ("PBO"), accumulated benefit obligation ("ABO") and the fair value of plan assets for all Company-sponsored pension plans:
PBO at end of fiscal year	243	$ 244	$ 275
Estimated future benefit payments
2017	14
2018	14
2019	15
2020	17
2021	18
2022-2026	$ 104