Other Noncurrent Liabilities (Details) (USD $) In Millions, unless otherwise specified	May 27, 2012	May 29, 2011
Other Noncurrent Liabilities [Abstract]
Postretirement health care and pension obligations	$ 846.5	$ 674.1
Noncurrent income tax liabilities	693.5	770.5
Environmental liabilities (see Note 18)	71.2	70.2
Other	283.5	287.0
Other noncurrent and current liabilities	1,894.7	1,801.8
Current portion of other noncurrent and current liabilities	(72.6)	(65.7)
Other noncurrent liabilities	$ 1,822.1	$ 1,736.1