BENEFIT PLANS - COMPONENTS OF NET PERIODIC BENEFIT COSTS (Details) - USD ($) $ in Millions	4 Months Ended
	May 26, 2018	May 20, 2017
Pension Benefits
Components of net periodic benefit cost:
Service cost	$ 15	$ 24
Interest cost	43	56
Expected return on plan assets	(54)	(73)
Amortization of:
Actuarial loss (gain)	25	26
Curtailment		2
Net periodic benefit cost	29	35
Other Benefits
Components of net periodic benefit cost:
Service cost	2	3
Interest cost	2	3
Amortization of:
Prior service cost	(3)	(2)
Actuarial loss (gain)	(3)	(3)
Net periodic benefit cost	$ (2)	$ 1