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Share Repurchases	6 Months Ended
Share Repurchases	Sep. 30, 2011
Share Repurchases [Abstract]
Share Repurchases	13. SHARE REPURCHASES During the six-month period ended September 30, 2011, the Company repurchased approximately 48.2 million shares for an aggregate purchase price of approximately $306.1 million, and retired all of these shares. During the six-month period ended September 30, 2011, the Company retired an additional 23.5 million shares which were repurchased in the prior periods. During the six-month period ended October 1, 2010, the Company repurchased approximately 51.1 million shares for an aggregate purchase price of approximately $299.9 million, and did not retire any shares.