Financial Instruments, Risk Management Activities, and Fair Values (Concentrations table) (Details)	12 Months Ended
	May 28, 2017
Net Sales [Member] | Wal-Mart [Member]
Product Information [Line Items]
Concentration Risk Percentage	20.00%
Net Sales [Member] | Wal-Mart [Member] | North America Retail [Member]
Product Information [Line Items]
Concentration Risk Percentage	29.00%
Net Sales [Member] | Wal-Mart [Member] | Convenience Stores and Foodservice Segment [Member]
Product Information [Line Items]
Concentration Risk Percentage	7.00%
Net Sales [Member] | Wal-Mart [Member] | Europe and Australia [Member]
Product Information [Line Items]
Concentration Risk Percentage	2.00%
Net Sales [Member] | Wal-Mart [Member] | Asia and Latin America [Member]
Product Information [Line Items]
Concentration Risk Percentage	4.00%
Net Sales [Member] | Five Largest Customers [Member] | North America Retail [Member]
Product Information [Line Items]
Concentration Risk Percentage	52.00%
Net Sales [Member] | Five Largest Customers [Member] | Convenience Stores and Foodservice Segment [Member]
Product Information [Line Items]
Concentration Risk Percentage	48.00%
Net Sales [Member] | Five Largest Customers [Member] | Europe and Australia [Member]
Product Information [Line Items]
Concentration Risk Percentage	31.00%
Net Sales [Member] | Five Largest Customers [Member] | Asia and Latin America [Member]
Product Information [Line Items]
Concentration Risk Percentage	10.00%
Accounts Receivable [Member] | Wal-Mart [Member] | North America Retail [Member]
Product Information [Line Items]
Concentration Risk Percentage	24.00%
Accounts Receivable [Member] | Wal-Mart [Member] | Convenience Stores and Foodservice Segment [Member]
Product Information [Line Items]
Concentration Risk Percentage	8.00%
Accounts Receivable [Member] | Wal-Mart [Member] | Europe and Australia [Member]
Product Information [Line Items]
Concentration Risk Percentage	1.00%
Accounts Receivable [Member] | Wal-Mart [Member] | Asia and Latin America [Member]
Product Information [Line Items]
Concentration Risk Percentage	4.00%