Pre- Tax Income and Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	May 27, 2012	May 29, 2011
Tax effect of temporary differences and carryforwards
Property, plant and equipment	$ 488.1	$ 452.3
Goodwill, trademarks and other intangible assets	681.3	642.7
Accrued expenses	25.4	15.9
Compensation related liabilities	74.7	66.2
Pension and other postretirement benefits	310.7	230.9
Derivative cash flow hedge	57.2	4.4
Other liabilities that will give rise to future tax deductions	115.2	121.5
Net operating loss carryforwards	42.7	52.1
Other assets	67.4	46.4
Other Liabilities	31.4	24.1
Deferred tax liabilities gross	1,200.8	1,119.1
Deferred Tax Assets, Gross, Total	693.3	537.4
Less: Valuation allowance	(43.7)	(50.8)
Net deferred taxes Assets, Total	649.6	486.6
Net deferred taxes Liabilities, Total	$ 1,200.8	$ 1,119.1