Income Taxes (Schedule of deferred tax assets and liabilities) (Details) - USD ($) $ in Millions	May 28, 2017	May 29, 2016
Tax effects of temporary differences that give rise to deferred tax assets and liabilities [Abstract]
Accrued liabilities	$ 70.0	$ 89.9
Compensation and employee benefits	419.2	491.5
Pension	196.3	322.0
Tax credit carryforwards	18.4	4.5
Stock, partnership, and miscellaneous investments	276.4	353.6
Capital losses	29.8	14.5
Net operating losses	109.5	97.9
Other	85.6	84.1
Gross deferred tax assets	1,205.2	1,458.0
Valuation allowance	231.8	227.0
Net deferred tax assets	973.4	1,231.0
Brands	1,310.1	1,311.7
Fixed assets	484.5	476.3
Intangible assets	238.6	221.8
Tax lease transactions	45.8	48.0
Inventories	60.0	53.0
Stock, partnership, and miscellaneous investments	479.4	476.0
Unrealized hedges	45.4	22.6
Other	29.0	21.2
Gross deferred tax liabilities	2,692.8	2,630.6
Net deferred tax liability	$ 1,719.4	$ 1,399.6