BENEFIT PLANS - COMPONENTS OF NET PERIODIC BENEFIT COSTS (Details) - USD ($) $ in Millions	4 Months Ended
	May 23, 2020	May 25, 2019
Pension Benefits
Components of net periodic benefit cost:
Service cost	$ 4	$ 12
Interest cost	34	41
Expected return on plan assets	(52)	(56)
Amortization of:
Actuarial loss (gain)	11	16
Net periodic benefit cost	(3)	13
Contributions into Fund	0	0
Other Benefits
Components of net periodic benefit cost:
Service cost	2	2
Interest cost	2	2
Amortization of:
Prior service cost	(4)	(3)
Actuarial loss (gain)	(2)	(3)
Net periodic benefit cost	$ (2)	$ (2)