Income Taxes (Schedule of deferred tax assets and liabilities) (Details) - USD ($) $ in Millions	May 29, 2016	May 31, 2015
Tax effects of temporary differences that give rise to deferred tax assets and liabilities [Abstract]
Accrued liabilities	$ 89.9	$ 98.0
Compensation and employee benefits	491.5	536.2
Unrealized hedges	0.0	0.8
Pension	322.0	169.0
Tax credit carryforwards	4.5	5.6
Stock, partnership, and miscellaneous investments	353.6	384.1
Capital losses	14.5	6.1
Net operating losses	97.9	89.3
Other	84.1	74.5
Gross deferred tax assets	1,458.0	1,363.6
Valuation allowance	227.0	215.4
Net deferred tax assets	1,231.0	1,148.2
Brands	1,311.7	1,346.3
Fixed assets	476.3	446.5
Intangible assets	221.8	208.4
Tax lease transactions	48.0	50.8
Inventories	53.0	59.7
Stock, partnership, and miscellaneous investments	476.0	472.5
Unrealized hedges	22.6	0.0
Other	21.2	14.2
Gross deferred tax liabilities	2,630.6	2,598.4
Net deferred tax liability	$ 1,399.6	$ 1,450.2