ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - ITEMS RECLASSIFIED OUT OF AOCI (Details) - USD ($) $ in Millions	3 Months Ended						4 Months Ended		12 Months Ended
	Feb. 03, 2018	Nov. 04, 2017	Aug. 12, 2017	Jan. 28, 2017	Nov. 05, 2016	Aug. 13, 2016	May 20, 2017	May 21, 2016	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Reclassification out of AOCI and the related tax effects
Amortization of gains and losses on cash flow hedging activities	$ 148	$ 136	$ 138	$ 126	$ 124	$ 116	$ 177	$ 155	$ 601	$ 522	$ 482
Realized gains on available for sale securities	5,962	4,708	4,523	4,483	4,443	4,473	6,376	5,779	21,568	19,178	17,946
Tax expense	(957)	215	189	230	206	171	148	350	(405)	957	1,045
Net of tax	$ (854)	$ (397)	$ (353)	$ (506)	$ (391)	$ (383)	$ (303)	$ (696)	(1,907)	(1,975)	(2,039)
Total reclassifications, net of tax									52	21	54
Cash Flow Hedging Activities
Reclassification out of AOCI and the related tax effects
Tax expense									(3)
Total reclassifications, net of tax									3	2
Available for sale Securities
Reclassification out of AOCI and the related tax effects
Tax expense										13
Total reclassifications, net of tax										(14)
Pension and Postretirement Defined Benefit Plans
Reclassification out of AOCI and the related tax effects
Amortization of amounts included in net periodic pension expense									69	53	85
Tax expense									(20)	(20)	(32)
Total reclassifications, net of tax									49	33	53
Reclassification out of AOCI | Cash Flow Hedging Activities
Reclassification out of AOCI and the related tax effects
Amortization of gains and losses on cash flow hedging activities									6	2	1
Tax expense									(3)
Net of tax									$ 3	2	$ 1
Reclassification out of AOCI | Available for sale Securities
Reclassification out of AOCI and the related tax effects
Realized gains on available for sale securities										(27)
Tax expense										13
Net of tax										$ (14)