Income Taxes (Schedule of earnings before income taxes and after-tax earnings from joint ventures and corresponding income taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	May 29, 2016	May 31, 2015	May 25, 2014
Earnings before income taxes and after-tax earnings from joint ventures:
United States	$ 1,941.4	$ 1,338.6	$ 2,181.4
Foreign	462.2	423.3	473.6
Earnings before income taxes and after-tax earnings from joint ventures	2,403.6	1,761.9	2,655.0
Income taxes currently payable:
Federal	489.8	392.7	526.7
State and local	30.8	29.3	37.8
Foreign	114.0	139.5	146.3
Total current	634.6	561.5	710.8
Income taxes deferred:
Federal	123.0	70.3	159.1
State and local	(6.9)	(8.7)	21.3
Foreign	4.5	(36.3)	(7.9)
Total deferred	120.6	25.3	172.5
Total income taxes	$ 755.2	$ 586.8	$ 883.3