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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.22(a)(1))
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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The cash outflow for the settlement of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, as it matures.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Debt (Narrative) (Details) - USD ($)	Aug. 03, 2015	Jul. 27, 2015	Jan. 21, 2015	Jan. 29, 2016	May. 29, 2015
Bank Syndicate Facility Due At November 2016
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 350,000,000
Bank Syndicate Facility Due At December Two Thousand And Eighteen
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,000,000,000
Line of Credit Facility, Current Borrowing Capacity				$ 750,000,000
Senior Notes Due 2015 At 5.10%
Debt Instrument [Line Items]
Maturities of Senior Debt	$ 150,000,000
Senior Notes Due 2026 At 3.95%
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 350,000,000
Debt Instrument, Interest Rate, Stated Percentage		3.95%
Proceeds from Debt, Net of Issuance Costs		$ 345,000,000
Senior Notes Due 2025 At 3.30%
Debt Instrument [Line Items]
Proceeds from Issuance of Debt			$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage			3.30%
Senior Notes Due 2045 at 4.40%
Debt Instrument [Line Items]
Proceeds from Issuance of Debt			$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage			4.40%
Senior Notes Due 2025 At 3.30% and Senior Notes Due 2045 at 4.40%
Debt Instrument [Line Items]
Proceeds from Debt, Net of Issuance Costs			$ 492,000,000