BENEFIT PLANS - COMPONENTS OF NET PERIODIC BENEFIT COSTS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 15, 2020	Aug. 17, 2019	Aug. 15, 2020	Aug. 17, 2019
Pension Benefits
Components of net periodic benefit cost:
Service cost	$ 3	$ 7	$ 7	$ 17
Interest cost	26	32	60	73
Expected return on plan assets	(39)	(41)	(91)	(97)
Amortization of:
Actuarial loss (gain)	8	15	19	31
Net periodic benefit cost	(2)	13	(5)	24
Contributions into Fund			0	0
Other Benefits
Components of net periodic benefit cost:
Service cost	1	2	3	4
Interest cost	1	2	3	4
Amortization of:
Prior service cost	(2)	(2)	(6)	(5)
Actuarial loss (gain)	(2)	$ (2)	(4)	(5)
Net periodic benefit cost	$ (2)		$ (4)	$ (2)