ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - ITEMS RECLASSIFIED OUT OF AOCI (Details) - USD ($) $ in Millions	3 Months Ended						4 Months Ended		12 Months Ended
	Feb. 02, 2019	Nov. 10, 2018	Aug. 18, 2018	Feb. 03, 2018	Nov. 04, 2017	Aug. 12, 2017	May 26, 2018	May 20, 2017	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Reclassification out of AOCI and the related tax effects
Amortization of gains and losses on cash flow hedging activities	$ 142	$ 142	$ 144	$ 148	$ 136	$ 138	$ 192	$ 177	$ 620	$ 601	$ 522
Realized gains on available for sale securities	5,013	4,556	4,612	5,456	4,701	4,517	6,122	6,367	20,305	21,041	19,162
Tax expense	66	91	127	(957)	215	189	616	148	900	(405)	957
Net of tax	$ (259)	$ (317)	$ (508)	$ (854)	$ (397)	$ (353)	$ (2,026)	$ (303)	(3,110)	(1,907)	(1,975)
Total reclassifications, net of tax									48	52	21
Cash Flow Hedging Activities
Reclassification out of AOCI and the related tax effects
Tax expense									(3)	(3)
Total reclassifications, net of tax									5	3
Pension and Postretirement Defined Benefit Plans
Reclassification out of AOCI and the related tax effects
Amortization of amounts included in net periodic pension expense									56	69	53
Tax expense									(13)	(20)	(20)
Total reclassifications, net of tax									43	49	33
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									8	6	2
Tax expense									(3)	(3)
Net of tax									$ 5	$ 3	2
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)