BENEFIT PLANS - Net Periodic Benefit Cost (Income) and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) for Defined Benefit Pension and Other Postretirement Benefit Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 24, 2018	Feb. 25, 2017	Feb. 27, 2016
Pension Benefits
Net Periodic Benefit Cost
Service cost	$ 0	$ 0	$ 0
Interest cost	83	84	106
Expected return on plan assets	(138)	(141)	(142)
Amortization of prior service benefit	0	0	0
Defined Benefit Plan, Amortization of Gain (Loss)	12	43	79
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	0	0	0
Settlement	0	42	0
Net periodic benefit (income) cost	(43)	28	43
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)
Prior service benefit	(22)	0	0
Amortization of prior service benefit	0	0	0
Amortization of net actuarial loss	(66)	(172)	76
Amortization of net actuarial loss	(11)	(43)	(79)
Total expense (benefit) recognized in Other comprehensive income (loss)	(99)	(215)	(3)
Total expense (benefit) recognized in net periodic benefit cost (income) and Other comprehensive income (loss)	(142)	(187)	40
Other Postretirement Benefits
Net Periodic Benefit Cost
Service cost	0	1	0
Interest cost	2	2	3
Expected return on plan assets	0	0	0
Amortization of prior service benefit	(16)	(15)	(15)
Defined Benefit Plan, Amortization of Gain (Loss)	2	2	3
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	(8)	0	0
Settlement	0	0	0
Net periodic benefit (income) cost	(20)	(10)	(9)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)
Prior service benefit	5	(7)	(21)
Amortization of prior service benefit	16	15	15
Amortization of net actuarial loss	(3)	(3)	(7)
Amortization of net actuarial loss	(1)	(2)	(3)
Total expense (benefit) recognized in Other comprehensive income (loss)	17	3	(16)
Total expense (benefit) recognized in net periodic benefit cost (income) and Other comprehensive income (loss)	$ (3)	$ (7)	$ (25)