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. 24, 2018	Feb. 25, 2017	Feb. 27, 2016
Changes in Plan Assets
Fair value of plan assets at beginning of year	$ 2,183
Employer contributions	44	$ 36	$ 36
Fair value of plan assets at end of year	2,444	2,183
Pension Benefits
Changes in Benefit Obligation
Benefit obligation at beginning of year	2,480	2,664
Defined Benefit Plan, Plan Assets, Business Combination	268	0
Plan amendment	21	0
Service cost	0	0	0
Interest cost	83	84	106
Actuarial loss (gain)	(2)	(37)
Settlements paid	0	200
Defined Benefit Plan, Cost of Providing Special and Contractual Termination Benefits	0	0
Benefits paid	(140)	(105)
Benefit obligation at end of year	2,672	2,480	2,664
Changes in Plan Assets
Fair value of plan assets at beginning of year	2,183	2,119
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan	193	0
Actual return on plan assets	206	307
Employer contributions	2	62
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	0	0
Settlements paid	0	(200)
Benefits paid	(140)	(105)
Fair value of plan assets at end of year	2,444	2,183	2,119
Unfunded status at end of year	(228)	(297)
Other Postretirement Benefits
Changes in Benefit Obligation
Benefit obligation at beginning of year	44	54
Defined Benefit Plan, Plan Assets, Business Combination	28	0
Plan amendment	1	7
Service cost	0	1	0
Interest cost	2	2	3
Actuarial loss (gain)	3	3
Settlements paid	0	0
Defined Benefit Plan, Cost of Providing Special and Contractual Termination Benefits	(11)	0
Benefits paid	(3)	(3)
Benefit obligation at end of year	56	44	54
Changes in Plan Assets
Fair value of plan assets at beginning of year	16	15
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan	0	0
Actual return on plan assets	0	0
Employer contributions	0	4
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	1	2
Settlements paid	0	0
Benefits paid	(4)	(5)
Fair value of plan assets at end of year	13	16	$ 15
Unfunded status at end of year	$ (43)	$ (28)

Defined Benefit Plan Benefits Paid Plan Asset

No definition available.

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- Definition

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

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- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of increase (decrease) in plan assets of defined benefit plan from assets transferred into (from) plan.

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- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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- Definition

Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
-Subparagraph (a)(6)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

Amount of increase in plan assets of defined benefit plan from business combination.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

Amount of cost of providing special or contractual termination benefits payable from defined benefit plan.

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- Definition

Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

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- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

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- Definition

Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.

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- Definition

Amount of contributions received by defined benefit plan from participant which increases plan assets.

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- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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- Definition

Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

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- Definition

Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(ii)
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