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Stockholders' Equity (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Sep. 30, 2012
Apr. 01, 2012
Equity [Abstract]    
Number of shares repurchased 0 10.4
Common stock repurchase, average price (in dollars per share)   $ 6.49
Common stock repurchase, total purchase price   $ 67.5
Share repurchase program, amount available for future purchase $ 79.8