Restructuring Activities (Details Textuals) (USD $) In Millions	12 Months Ended		21 Months Ended	24 Months Ended
	May 29, 2011	May 30, 2010	Feb. 27, 2011	May 31, 2011
Consumer Foods [Member] | Asset impairment charge [Member] | 2010 Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	$ 16.5
Restructuring and Related Cost, Incurred Cost				16.5
Restructuring (Textuals) [Abstract]
Assets Impairment charge				16.5
Consumer Foods [Member] | 2010 Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	64.4
Restructuring and Related Cost, Incurred Cost	25.6			61.3
Restructuring (Textuals) [Abstract]
Assets Impairment charge	25.6			61.3
Asset impairment charge [Member] | 2010 Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	16.5
Restructuring and Related Cost, Incurred Cost				16.5
Restructuring (Textuals) [Abstract]
Assets Impairment charge				16.5
2010 Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	68.0
Charges which have resulted or will result in cash outflows			29.7
Non-cash charges			38.3
Costs incurred related to 2010 Restructuring plan		39.2
Restructuring and Related Cost, Incurred Cost	25.7			64.9
Restructuring (Textuals) [Abstract]
Assets Impairment charge	25.7			64.9
Consumer Foods [Member] | Asset impairment charge [Member] | Network Optimization Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	8.6
Restructuring and Related Cost, Incurred Cost	8.6
Restructuring (Textuals) [Abstract]
Assets Impairment charge	8.6
Consumer Foods [Member] | Network Optimization Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	41.1
Restructuring and Related Cost, Incurred Cost	19.7
Restructuring (Textuals) [Abstract]
Assets Impairment charge	19.7
Asset impairment charge [Member] | Network Optimization Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	19.0
Restructuring and Related Cost, Incurred Cost	19.0
Restructuring (Textuals) [Abstract]
Assets Impairment charge	19.0
Network Optimization Plan [Member]
Restructuring and Related Cost
Restructuring and related cost, expected cost	54.9
Charges which have resulted or will result in cash outflows	22.3
Non-cash charges	32.6
Restructuring and Related Cost, Incurred Cost	30.6
Restructuring (Textuals) [Abstract]
Assets Impairment charge	$ 30.6