v2.4.0.6
Derivatives And Hedging Activities (Schedule of Derivative Instruments Designated as Cash Flow Hedges) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Jan. 27, 2012
Jan. 28, 2011
Jan. 27, 2012
Jan. 28, 2011
Derivatives And Hedging Activities [Abstract]        
Gain (Loss) Recognized in AOCI $ 11.9 $ 6.8 $ 22.2 $ 8.8
Gain (Loss) Reclassified from AOCI into Income $ 10.5 $ 4.6 $ 18.1 $ 9.0