Restructuring Activities (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended	18 Months Ended
	May 27, 2012	May 27, 2012
Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	$ 4.5
Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	16.7
Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	41.8	72.4
Accelerated depreciation [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	0.2
Accelerated depreciation [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	1.1
Accelerated depreciation [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	15.5	20.5
Inventory write-offs and related costs [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	6.8	7.3
Cost of goods sold [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	0.2
Cost of goods sold [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	22.3	27.8
Asset impairment charge [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	8.2	27.3
Severance and related costs [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	8.4
Severance and related costs [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.6	9.6
Other, net [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.3
Other, net [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	7.2
Other, net [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	6.7	7.7
Selling, general and administrative expenses [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.3
Selling, general and administrative expenses [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	16.7
Selling, general and administrative expenses [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	19.5	44.6
Consumer foods [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.5
Consumer foods [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	12.2
Consumer foods [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	36.7	56.4
Consumer foods [Member] | Accelerated depreciation [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	0.2
Consumer foods [Member] | Accelerated depreciation [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	15.5	20.5
Consumer foods [Member] | Inventory write-offs and related costs [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	6.7	6.9
Consumer foods [Member] | Cost of goods sold [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	0.2
Consumer foods [Member] | Cost of goods sold [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	22.2	27.4
Consumer foods [Member] | Asset impairment charge [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.7
Consumer foods [Member] | Asset impairment charge [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost		13.3
Consumer foods [Member] | Severance and related costs [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	6.2
Consumer foods [Member] | Severance and related costs [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.6	9.5
Consumer foods [Member] | Other, net [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.3
Consumer foods [Member] | Other, net [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	6.0
Consumer foods [Member] | Other, net [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	5.2	6.2
Consumer foods [Member] | Selling, general and administrative expenses [Member] | Acquisition-related restructuring [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	4.3
Consumer foods [Member] | Selling, general and administrative expenses [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	12.2
Consumer foods [Member] | Selling, general and administrative expenses [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	14.5	29.0
Commercial foods [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	1.0
Commercial foods [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	5.1	16.0
Commercial foods [Member] | Inventory write-offs and related costs [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	0.1	0.4
Commercial foods [Member] | Cost of goods sold [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	0.1	0.4
Commercial foods [Member] | Asset impairment charge [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	3.5	14.0
Commercial foods [Member] | Severance and related costs [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost		0.1
Commercial foods [Member] | Other, net [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	1.5
Commercial foods [Member] | Other, net [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	1.0
Commercial foods [Member] | Other, net [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost		1.5
Commercial foods [Member] | Selling, general and administrative expenses [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	1.0
Commercial foods [Member] | Selling, general and administrative expenses [Member] | Network optimization plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	5.0	15.6
Corporate [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	3.5
Corporate [Member] | Accelerated depreciation [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	1.1
Corporate [Member] | Severance and related costs [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	2.2
Corporate [Member] | Other, net [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	0.2
Corporate [Member] | Selling, general and administrative expenses [Member] | Administrative efficiency restructuring plan [Member]
Summary of incurred restructuring pre tax expenses
Restructuring and Related Cost, Incurred Cost	$ 3.5