Stock- Based Compensation Plan (Tables)

3 Months Ended

Apr. 01, 2012

Stock-Based Compensation Plans [Abstract]

Valuation of stock options granted

	2011
Expected dividend yield		—
Expected volatility		36.8	%
Risk-free interest rate		2.1	%
Expected life in years		6.2

Stock option transactions for employee stock option plans

	Shares			Weighted Average Exercise Price
Beginning balance		2,322,845		$	38.19
Granted		—		$	—
Exercised		(233,100	)	$	31.16
Cancelled or expired		(22,052	)	$	36.86
Ending balance		2,067,693		$	39.00
Options exercisable at end of period		1,633,370		$	37.17

Stock option transactions for non-employee stock option plans

	Shares			Weighted Average Exercise Price
Beginning balance		404,692		$	32.85
Granted		4,237		$	37.53
Exercised		(28,955	)	$	14.90
Ending balance		379,974		$	34.27
Options exercisable at end of period		338,205		$	32.79