Debt (Schedule of short-term debt) (Details) (USD $) In Millions, unless otherwise specified	May 25, 2014	May 26, 2013
Short-term Debt [Line Items]
Notes payable	$ 1,111.7	$ 599.7
Weighted Average Interest Rate	1.30%	2.00%
Commercial Paper [Member] | US [Member]
Short-term Debt [Line Items]
Notes payable	1,007.6	515.5
Weighted Average Interest Rate	0.20%	0.20%
Financial Institutions [Member]
Short-term Debt [Line Items]
Notes payable	$ 104.1	$ 84.2
Weighted Average Interest Rate	12.10%	13.00%