FAIR VALUE MEASUREMENTS Schedule of Level 3 Change, Pension Plan Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 29, 2012	May 01, 2011	May 02, 2010
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	$ 1,021.2	$ 963.0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	76.6	35.4
Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	1.6	1.8
Insurance Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	1.6	1.8	1.8
Defined Benefit Plan, Actual Return on Plan Assets Still Held	0	0
Defined Benefit Plan, Actual Return on Plan Assets Sold During Period	0	0
Defined Benefit Plan, Purchases, Sales, and Settlements	(0.2)	0
Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	75.0	33.6
Limited Partnerships [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	75.0	33.6	29.2
Defined Benefit Plan, Actual Return on Plan Assets Still Held	(2.7)	1.2
Defined Benefit Plan, Actual Return on Plan Assets Sold During Period	1.6	1.3
Defined Benefit Plan, Purchases, Sales, and Settlements	$ 42.5	$ 1.9