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Accounting Developments Accounting Developments - Additional Information (Details) (USD $) In Millions, unless otherwise specified	Jan. 02, 2011
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of Restatement on Opening Stockholders Equity, Net of Tax	$ 459.5

Net of tax adjustment in the annual report for the year in which a restatement is made, of the resulting effects on the net income of prior periods on the beginning balance of retained earnings for the current period.

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