FAIR VALUE MEASUREMENTS (Fair Value of Assets and Liabilities Measured on Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Aug. 25, 2013	May 26, 2013
Assets:
Derivative assets	$ 78.8	$ 78.6
Available-for-sale securities	2.2	6.1
Deferred compensation assets	6.9	6.9
Total assets	87.9	91.6
Liabilities:
Derivative liabilities	70.3	137.9
Deferred compensation liabilities	40.2	35.9
Total liabilities	110.5	173.8
Level 1
Assets:
Derivative assets	11.7	13.9
Available-for-sale securities	2.2	6.1
Deferred compensation assets	6.9	6.9
Total assets	20.8	26.9
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	40.2	35.9
Total liabilities	40.2	35.9
Level 2
Assets:
Derivative assets	67.1	64.7
Available-for-sale securities	0	0
Deferred compensation assets	0	0
Total assets	67.1	64.7
Liabilities:
Derivative liabilities	70.3	137.9
Deferred compensation liabilities	0	0
Total liabilities	70.3	137.9
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