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, unless otherwise specified	0 Months Ended	1 Months Ended	12 Months Ended
	Feb. 21, 2014	Dec. 31, 2014	Feb. 28, 2015	Feb. 22, 2014	Feb. 23, 2013
Change in Benefit Obligation
Plan amendment	$ (11)
Changes in Plan Assets
Fair value of plan assets at beginning of year			2,261
Employer contributions			39	39	38
Other		5
Fair value of plan assets at end of year			2,317	2,261
Pension Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year			2,726	2,893
Plan amendment			0	0
Service cost			0	0	0
Interest cost			121	121	123
Actuarial loss (gain)			371	(141)
Settlements paid			(272)	0
Benefits paid			(97)	(147)
Other			0	0
Benefit obligation at end of year			2,849	2,726	2,893
Changes in Plan Assets
Fair value of plan assets at beginning of year			2,261	2,031
Actual return on plan assets			260	259
Employer contributions			165	118
Plan participants’ contributions			0	0
Settlements paid			(272)	0
Benefits paid			(97)	(147)
Other			0	0
Fair value of plan assets at end of year			2,317	2,261	2,031
Unfunded status at end of year			(532)	(465)
Other Postretirement Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year			81	109
Plan amendment			(5)	(11)
Service cost			1	2	2
Interest cost			4	4	5
Actuarial loss (gain)			5	(12)
Settlements paid			0	0
Benefits paid			(4)	(6)
Other			0	(5)
Benefit obligation at end of year			82	81	109
Changes in Plan Assets
Fair value of plan assets at beginning of year			0	0
Actual return on plan assets			0	0
Employer contributions			4	6
Plan participants’ contributions			3	3
Settlements paid			0	0
Benefits paid			(7)	(9)
Other			4	0
Fair value of plan assets at end of year			4	0	0
Unfunded status at end of year			$ (78)	$ (81)