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Stockholders' Equity (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended			9 Months Ended
	Apr. 30, 2012	Oct. 31, 2011	Jul. 31, 2010	Sep. 29, 2012	Oct. 01, 2011
Stockholders' Equity
Stock issuances under employee plans, net of shares withheld for taxes (in shares)				1.1
Shares withheld to satisfy employee tax obligation				0.3
Value of common stock board of directors authorized to repurchase (in USD)	$ 100	$ 50	$ 150
Common stock repurchased (in shares)				1.5	3.2
Repurchases of common stock (in USD)				$ 53.1	$ 110.0

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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