Income Taxes (Schedule of deferred tax assets and liabilities) (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Tax effects of temporary differences that give rise to deferred tax assets and liabilities [Abstract]
Accrued liabilities	$ 47.2	$ 70.0
Compensation and employee benefits	210.2	419.2
Pension	57.1	196.3
Tax credit carryforwards	7.4	18.4
Stock, partnership, and miscellaneous investments	147.9	276.4
Capital losses	12.9	29.8
Net operating losses	161.2	109.5
Other	52.9	85.6
Gross deferred tax assets	696.8	1,205.2
Valuation allowance	176.0	231.8
Net deferred tax assets	520.8	973.4
Brands	1,498.7	1,310.1
Fixed assets	329.5	484.5
Intangible assets	255.1	238.6
Tax lease transactions	26.0	45.8
Inventories	38.8	60.0
Stock, partnership, and miscellaneous investments	317.1	479.4
Unrealized hedges	28.5	45.4
Other	30.9	29.0
Gross deferred tax liabilities	2,524.6	2,692.8
Net deferred tax liability	$ 2,003.8	$ 1,719.4