COMPANY-SPONSORED BENEFIT PLANS - AMOUNTS RECOGNIZED IN AOCI AND OTHER CHANGES IN OCI (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Amounts recognized in AOCI (pre-tax):
Net actuarial loss (gain)	$ 1,092	$ 1,309
Prior service cost (credit)	(65)	(74)
Total	1,027	1,235
Amounts in AOCI expected to be recognized as components of net periodic pension or postretirement benefit costs in the next fiscal year (pre-tax):
Net actuarial loss (gain)	53
Prior service cost (credit)	(8)
Total	45
Other changes recognized in other comprehensive income (pre-tax):
Incurred net actuarial loss (gain)	(122)	604	$ (340)
Amortization of prior service credit (cost)	11	7	4
Amortization of net actuarial gain (loss)	(95)	(42)	(102)
Other	(2)	(47)	(30)
Total recognized in other comprehensive income (loss)	(208)	522	(468)
Total recognized in net periodic benefit cost and other comprehensive income	(104)	586	(366)
Pension Benefits
Amounts recognized in AOCI (pre-tax):
Net actuarial loss (gain)	1,213	1,398
Prior service cost (credit)	1	1
Total	1,214	1,399
Amounts in AOCI expected to be recognized as components of net periodic pension or postretirement benefit costs in the next fiscal year (pre-tax):
Net actuarial loss (gain)	62
Total	62
Other changes recognized in other comprehensive income (pre-tax):
Incurred net actuarial loss (gain)	(83)	590	(243)
Amortization of net actuarial gain (loss)	(102)	(50)	(102)
Total recognized in other comprehensive income (loss)	(185)	540	(345)
Total recognized in net periodic benefit cost and other comprehensive income	(82)	595	(271)
Other Benefits
Amounts recognized in AOCI (pre-tax):
Net actuarial loss (gain)	(121)	(89)
Prior service cost (credit)	(66)	(75)
Total	(187)	(164)
Amounts in AOCI expected to be recognized as components of net periodic pension or postretirement benefit costs in the next fiscal year (pre-tax):
Net actuarial loss (gain)	(9)
Prior service cost (credit)	(8)
Total	(17)
Other changes recognized in other comprehensive income (pre-tax):
Incurred net actuarial loss (gain)	(39)	14	(97)
Amortization of prior service credit (cost)	11	7	4
Amortization of net actuarial gain (loss)	7	8
Other	(2)	(47)	(30)
Total recognized in other comprehensive income (loss)	(23)	(18)	(123)
Total recognized in net periodic benefit cost and other comprehensive income	$ (22)	$ (9)	$ (95)