Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions	Aug. 28, 2011	May 29, 2011
Assets:
Derivative assets	$ 77.0	$ 71.5
Available-for-sale securities	1.5	1.7
Deferred compensation assets	7.1	7.4
Total assets	85.6	80.6
Liabilities:
Derivative liabilities	121.5	92.2
Deferred compensation liabilities	28.0	29.1
Total liabilities	149.5	121.3
Level 1 [Member]
Assets:
Derivative assets	17.2	16.3
Available-for-sale securities	1.5	1.7
Deferred compensation assets	7.1	7.4
Total assets	25.8	25.4
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	28.0	29.1
Total liabilities	28.0	29.1
Level 2 [Member]
Assets:
Derivative assets	59.8	55.2
Available-for-sale securities	0	0
Deferred compensation assets	0	0
Total assets	59.8	55.2
Liabilities:
Derivative liabilities	121.5	92.2
Deferred compensation liabilities	0	0
Total liabilities	121.5	92.2
Level 3 [Member]
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