Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Nov. 27, 2011	May 29, 2011
Assets:
Derivative assets	$ 99.5	$ 71.5
Available-for-sale securities	1.4	1.7
Deferred compensation assets	6.6	7.4
Total assets	107.5	80.6
Liabilities:
Derivative liabilities	186.9	92.2
Deferred compensation liabilities	27.6	29.1
Total liabilities	214.5	121.3
Level 1 [Member]
Assets:
Derivative assets	14.0	16.3
Available-for-sale securities	1.4	1.7
Deferred compensation assets	6.6	7.4
Total assets	22.0	25.4
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	27.6	29.1
Total liabilities	27.6	29.1
Level 2 [Member]
Assets:
Derivative assets	85.5	55.2
Available-for-sale securities	0	0
Deferred compensation assets	0	0
Total assets	85.5	55.2
Liabilities:
Derivative liabilities	186.9	92.2
Deferred compensation liabilities	0	0
Total liabilities	186.9	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