ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - ITEMS RECLASSIFIED OUT OF AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Tax expense	$ (670)	$ (667)	$ (653)
Net earnings attributable to The Kroger Co.	2,665	2,164	2,244
Total reclassifications, net of tax	4	(5)	12
Cash flow hedging activity
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Tax expense	(1)	(2)
Total reclassifications, net of tax	8	6
Pension and postretirement defined benefit plan
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Amortization of amounts included in net periodic pension cost	(5)	(14)	7
Tax expense	1	3	(2)
Total reclassifications, net of tax	(4)	(11)	5
Reclassification out of AOCI | Cash flow hedging activity
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Amortization of gains and losses on cash flow hedging activities	9	8	9
Tax expense	(1)	(2)	(2)
Net earnings attributable to The Kroger Co.	$ 8	$ 6	$ 7