Number of uncommitted lines of credit maintained by the reporting entity as of the balance sheet date.

No definition available.

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Data Type:	xbrli:integerItemType
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: 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(a)(1))
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Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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-Subparagraph (SX 210.9-04.9)
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

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Period Type:

- Details

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- Details

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Note 9 - Long Term Debt (Details Textual) $ in Thousands		3 Months Ended		6 Months Ended
Note 9 - Long Term Debt (Details Textual) $ in Thousands	Aug. 06, 2014 USD ($)	Aug. 26, 2017 USD ($)	Aug. 27, 2016 USD ($)	Aug. 26, 2017 USD ($)	Aug. 27, 2016 USD ($)	Jul. 17, 2014 USD ($)
Line of Credit Facility, Number of Uncommitted Lines of Credit Maintained		2		2
Uncommitted Line of Credit Expiring August 30, 2017 [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 100,000		$ 100,000
Uncommitted Lines of Credit [Member]
Proceeds from Lines of Credit				0
Uncommitted Line of Credit Expiring February 25, 2018 [Member]
Line of Credit Facility, Maximum Borrowing Capacity		100,000		100,000
Revolver [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 250,000
Debt Instrument, Term	5 years
Proceeds from Lines of Credit				0
Senior Unsecured Notes and Revolver [Member]
Interest Expense		$ 18,300	$ 18,100	$ 36,500	$ 36,800
Senior Unsecured Notes and Revolver [Member] \| Other Assets [Member]
Debt Issuance Costs, Gross	$ 10,100
Senior Unsecured Notes [Member] \| The 2024 Notes [Member]
Debt Instrument, Face Amount						$ 300,000
Debt Instrument, Interest Rate, Stated Percentage						3.749%
Senior Unsecured Notes [Member] \| The 2034 Notes [Member]
Debt Instrument, Face Amount						$ 300,000
Debt Instrument, Interest Rate, Stated Percentage						4.915%
Senior Unsecured Notes [Member] \| The 2044 Notes [Member]
Debt Instrument, Face Amount						$ 900,000
Debt Instrument, Interest Rate, Stated Percentage						5.165%