BENEFIT PLANS - Benefit Obligation, Fair Value of Plan Assets and Funded Status of Defined Benefit Pension Plans and Other Postretirement Benefit Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 25, 2017	Feb. 27, 2016	Feb. 28, 2015
Changes in Benefit Obligation
Benefits paid	$ (200)		$ (272)
Changes in Plan Assets
Fair value of plan assets at beginning of year	2,119
Employer contributions	43	$ 43	39
Fair value of plan assets at end of year	2,183	2,119
Pension Benefits
Changes in Benefit Obligation
Benefit obligation at beginning of year	2,664	2,849
Plan amendment	0	0
Service cost	0	0	0
Interest cost	84	106	121
Actuarial loss (gain)	37	(175)
Settlements paid	(200)	(1)
Benefits paid	(105)	(115)
Benefit obligation at end of year	2,480	2,664	2,849
Changes in Plan Assets
Fair value of plan assets at beginning of year	2,119	2,317
Actual return (loss) on plan assets	307	(109)
Employer contributions	62	27
Plan participants’ contributions	0	0
Settlements paid	(200)	(1)
Benefits paid	(105)	(115)
Other	0	0
Fair value of plan assets at end of year	2,183	2,119	2,317
Unfunded status at end of year	(297)	(545)
Other Postretirement Benefits
Changes in Benefit Obligation
Benefit obligation at beginning of year	54	82
Plan amendment	(7)	(21)
Service cost	1	0	1
Interest cost	2	3	4
Actuarial loss (gain)	(3)	(6)
Settlements paid	0	0
Benefits paid	(3)	(4)
Benefit obligation at end of year	44	54	82
Changes in Plan Assets
Fair value of plan assets at beginning of year	15	4
Actual return (loss) on plan assets	0	0
Employer contributions	4	15
Plan participants’ contributions	2	2
Settlements paid	0	0
Benefits paid	(5)	(6)
Other	0	0
Fair value of plan assets at end of year	16	15	$ 4
Unfunded status at end of year	$ (28)	$ (39)