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, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 22, 2014	Feb. 23, 2013
Pension Benefits
Net Periodic Benefit Cost
Service cost	$ 0	$ 0	$ 0
Interest cost	121	121	123
Expected return on plan assets	(149)	(141)	(133)
Amortization of prior service benefit	0	0	0
Amortization of net actuarial loss	68	101	111
Settlement	64	0	0
Net periodic benefit cost (income)	104	81	101
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Loss) Income
Prior service benefit	0	0	0
Amortization of prior service benefit	0	0	0
Amortization of net actuarial loss	195	(259)	46
Amortization of net actuarial loss	66	101	110
Total expense (benefit) recognized in Other comprehensive (loss) income	129	(360)	(64)
Total expense (benefit) recognized in net periodic benefit cost (income) and Other comprehensive (loss) income	233	(279)	37
Other Postretirement Benefits
Net Periodic Benefit Cost
Service cost	1	2	2
Interest cost	4	4	5
Expected return on plan assets	0	0	0
Amortization of prior service benefit	(16)	(13)	(12)
Amortization of net actuarial loss	3	5	6
Settlement	0	0	0
Net periodic benefit cost (income)	(8)	(2)	1
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Loss) Income
Prior service benefit	(5)	(11)	0
Amortization of prior service benefit	16	12	13
Amortization of net actuarial loss	6	(16)	(7)
Amortization of net actuarial loss	3	5	6
Total expense (benefit) recognized in Other comprehensive (loss) income	14	(20)	0
Total expense (benefit) recognized in net periodic benefit cost (income) and Other comprehensive (loss) income	$ 6	$ (22)	$ 1