Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Mar. 01, 2014
Non-financial assets measured on a non-recurring basis
Carrying value of total long-term indebtedness	$ 5,552,950us-gaap_DebtInstrumentCarryingAmount	$ 5,649,732us-gaap_DebtInstrumentCarryingAmount
Outstanding derivative financial instruments	0us-gaap_DerivativeInstrumentsAndHedges	0us-gaap_DerivativeInstrumentsAndHedges
Nonrecurring basis \| Level 1
Non-financial assets measured on a non-recurring basis
Estimated fair value of total long-term indebtedness	$ 5,880,626	$ 6,094,285

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant