CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Feb. 28, 2015	Mar. 01, 2014	Mar. 02, 2013
OPERATING ACTIVITIES:
Net income	$ 2,109,173us-gaap_NetIncomeLoss	$ 249,414us-gaap_NetIncomeLoss	$ 118,105us-gaap_NetIncomeLoss
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	416,628	403,741	414,111
Lease termination and impairment charges	41,945us-gaap_TangibleAssetImpairmentCharges	41,304us-gaap_TangibleAssetImpairmentCharges	70,859us-gaap_TangibleAssetImpairmentCharges
Gain from lease termination		(8,750)us-gaap_GainLossOnContractTermination
LIFO (credit) charge	(18,857)	104,142	(147,882)
Gain on sale of assets, net	(3,799)us-gaap_GainLossOnSaleOfOtherAssets	(15,984)us-gaap_GainLossOnSaleOfOtherAssets	(16,776)us-gaap_GainLossOnSaleOfOtherAssets
Stock-based compensation expense	23,390us-gaap_ShareBasedCompensation	16,194us-gaap_ShareBasedCompensation	17,717us-gaap_ShareBasedCompensation
Loss on debt retirements, net	18,512	62,443	140,502
Changes in deferred taxes	(1,726,487)
Excess tax benefit on stock options and restricted stock	(41,563)	(26,665)
Changes in operating assets and liabilities:
Accounts receivable	(25,902)	(28,051)	82,721
Inventories	129,985us-gaap_IncreaseDecreaseInInventories	56,557us-gaap_IncreaseDecreaseInInventories	130,100us-gaap_IncreaseDecreaseInInventories
Accounts payable	(169,952)	(100,774)	(68)
Other assets and liabilities, net	(104,114)	(51,525)	10,199
Net cash provided by operating activities	648,959	702,046	819,588
INVESTING ACTIVITIES:
Payments for property, plant and equipment	(426,828)	(333,870)	(315,846)
Intangible assets acquired	(112,558)	(87,353)	(67,134)
Acquisition of Health Dialog and RediClinic, net of cash acquired	(69,793)
Proceeds from sale-leaseback transactions		3,989	6,355
Proceeds from dispositions of assets and investments	15,494	28,416	30,320
Proceeds from lease termination		8,750
Proceeds from insured loss		15,144
Net cash used in investing activities	(593,685)	(364,924)	(346,305)
FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt	1,152,293	1,310,000	2,057,263
Net proceeds from (repayments to) revolver	1,325,000	(265,000)	529,000
Principal payments on long-term debt	(2,595,709)us-gaap_RepaymentsOfLongTermDebt	(1,340,435)us-gaap_RepaymentsOfLongTermDebt	(2,920,209)us-gaap_RepaymentsOfLongTermDebt
Change in zero balance cash accounts	1,081	(95)	(43,659)
Net proceeds from issuance of common stock	24,117	33,217	1,646
Payments for the repurchase of preferred stock		(21,034)
Financing fees paid for early debt redemption	(13,841)	(45,636)	(75,374)
Excess tax benefit on stock options and restricted stock	41,563	26,665
Deferred financing costs paid	(20,285)us-gaap_PaymentsOfFinancingCosts	(17,850)us-gaap_PaymentsOfFinancingCosts	(54,783)us-gaap_PaymentsOfFinancingCosts
Net cash used in financing activities	(85,781)	(320,168)	(506,116)
(Decrease) increase in cash and cash equivalents	(30,507)	16,954	(32,833)
Cash and cash equivalents, beginning of year	146,406	129,452	162,285
Cash and cash equivalents, end of year	$ 115,899	$ 146,406	$ 129,452

The net cash inflow (outflow) from Zero Balance Cash Accounts.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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Amount of gain (loss) on sale or disposal of other assets.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The cash outflow for reacquisition of callable preferred stock.

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The cash outflow for cost incurred in the modification of term of existing debt agreement in order for the entity to achieve some advantage.

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The cash outflow for loan and debt issuance costs.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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The cash inflow from the additional capital contribution to the entity.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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- Definition

The cash inflow from proceeds received from lessor related to a long-term capital lease obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

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-Name Accounting Standards Codification

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- Definition

The net cash inflow or cash outflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 9

-Subparagraph c

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585

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- Definition

Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities.

+ References

No definition available.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

-Paragraph 15

-Subparagraph (b)

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-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

Amount of cash inflow after closing and deferred financing costs received by a seller-lessee in a sale-leaseback recognized in investing activities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 40

-Section 55

-Paragraph 51

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-Topic 840

-SubTopic 40

-Section 55

-Paragraph 52

-URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51843-112757

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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- Definition

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

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-Topic 360

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