Supplemental Information (Schedule of the components of interest, net) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
May 25, 2014	May 26, 2013	May 27, 2012
Supplemental Information [Abstract]
Interest expense	$ 323.4	$ 333.8	$ 370.7
Capitalized interest	(4.9)	(4.3)	(8.9)
Interest income	(16.1)	(12.6)	(9.9)
Interest, net	$ 302.4	$ 316.9	$ 351.9

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Amount of interest capitalized during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

-URI http://asc.fasb.org/extlink&oid=6504829

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

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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

-Topic 835

-SubTopic 20

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

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-Section S99

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-Subparagraph (SX 210.9-04.9)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Article 9

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Aggregate amount of interest expense on all borrowings.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.7,8)

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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-Article 5

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-Topic 225

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