FAIR VALUE MEASUREMENTS (Fair Value of Assets and Liabilities Measured on Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Aug. 24, 2014	May 25, 2014
Assets:
Derivative assets	$ 31.2	$ 38.8
Available-for-sale securities	2.2	2.1
Deferred compensation assets	5.6	5.6
Total assets	39.0	46.5
Liabilities:
Derivative liabilities	13.1	10.4
Deferred compensation liabilities	46.2	43.7
Total liabilities	59.3	54.1
Level 1
Assets:
Derivative assets	12.5	8.5
Available-for-sale securities	2.2	2.1
Deferred compensation assets	5.6	5.6
Total assets	20.3	16.2
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	46.2	43.7
Total liabilities	46.2	43.7
Level 2
Assets:
Derivative assets	18.7	30.3
Available-for-sale securities	0	0
Deferred compensation assets	0	0
Total assets	18.7	30.3
Liabilities:
Derivative liabilities	13.1	10.4
Deferred compensation liabilities	0	0
Total liabilities	13.1	10.4
Level 3
Assets:
Derivative assets	0	0
Available-for-sale securities	0	0
Deferred compensation assets	0	0
Total assets	0	0
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	0	0
Total liabilities	$ 0	$ 0