PRE-TAX INCOME AND INCOME TAXES (Provision for Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	May. 31, 2015	May. 25, 2014	May. 26, 2013
Current
Federal	$ 301.4	$ 312.1	$ 149.0
State	28.3	29.2	23.5
Canada	8.1	11.4	11.4
Foreign - other	21.2	10.9	12.4
Current income tax expense (benefit), total	359.0	363.6	196.3
Deferred
Federal	(88.6)	(76.1)	160.9
State	(31.2)	(56.7)	4.5
Canada	2.8	3.3	1.6
Foreign - other	(8.0)	(14.0)	(1.4)
Deferred income tax expense (benefit), total	(125.0)	(143.5)	165.6
Income tax expense (benefit) continuing operations, total	$ 234.0	$ 220.1	$ 361.9