FAIR VALUE MEASUREMENTS (Fair Value of Assets and Liabilities Measured on Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Feb. 23, 2014	May 26, 2013
Assets:
Derivative assets	$ 87.0	$ 78.6
Available-for-sale securities	2.2	6.1
Deferred compensation assets	5.7	6.9
Total assets	94.9	91.6
Liabilities:
Derivative liabilities	35.1	137.9
Deferred compensation liabilities	42.1	35.9
Total liabilities	77.2	173.8
Level 1
Assets:
Derivative assets	13.7	13.9
Available-for-sale securities	2.2	6.1
Deferred compensation assets	5.7	6.9
Total assets	21.6	26.9
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	42.1	35.9
Total liabilities	42.1	35.9
Level 2
Assets:
Derivative assets	73.3	64.7
Available-for-sale securities	0	0
Deferred compensation assets	0	0
Total assets	73.3	64.7
Liabilities:
Derivative liabilities	35.1	137.9
Deferred compensation liabilities	0	0
Total liabilities	35.1	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