Stockholders' Equity (Schedule of accumulated other comprehensive loss balances, net of taxes) (Details) - USD ($) $ in Millions	May 29, 2016	May 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax:
Foreign currency translation adjustments	$ (644.2)	$ (536.6)
Unrealized gain (loss) from:
Securities	3.8	3.7
Hedge derivatives	(25.5)	(28.8)
Pension, other postretirement, and postemployment benefits:
Net actuarial gain (loss)	(1,958.2)	(1,756.1)
Prior service (costs) credits	11.9	7.1
Accumulated other comprehensive loss	$ (2,612.2)	$ (2,310.7)