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INVESTMENT SECURITIES (Details) (USD $)
In Millions, unless otherwise specified
Mar. 02, 2013
Feb. 25, 2012
Available-for-sale securities:    
Short term   $ 6.5
Long term 49.0 73.7
Trading securities:    
Long term 28.3 22.1
Held-to-maturity securities:    
Short term 449.9 749.9
Total investment securities $ 527.2 $ 852.2