Share-Based Arrangements Stock Options Activity (Details) (Stock Options [Member], USD $)	3 Months Ended	6 Months Ended
Jun. 29, 2012	Jul. 01, 2011	Jun. 29, 2012	Jul. 01, 2011	Mar. 30, 2012	Dec. 31, 2011
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at Beginning of Period	1,106,447		979,658
Granted	0		181,620
Exercised	(16,243)		(55,431)
Forfeited or expired	0		(15,643)
Outstanding at June 29, 2012	1,090,204		1,090,204
Options outstanding at Beginning of Period, Weighted average-exercise price	$ 25.45		$ 25.45		$ 25.38	$ 23.35
Granted, Weighted Average Grant Date Fair Value	$ 0.00		$ 33.59
Exercised, Weighted average-exercise price	$ 20.87		$ 17.19
Forfeited or expired, Weighted average exercise price	$ 0.00		$ 17.66
Options outstanding at June 29, 2012, Weighted average-exercise price	$ 25.45		$ 25.45		$ 25.38	$ 23.35
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Expected option term			5 years 4 months 8 days	6 years 6 months 1 day
Expected volatility	0.00%	0.00%	46.50%	43.90%
Risk-free interest rate	0.00%	0.00%	0.90%	2.90%
Expected dividend yield	0.00%	0.00%	1.90%	2.20%
Per share fair value of options granted	$ 0.00	$ 0.00	$ 12.00	$ 12.05

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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-Name Accounting Standards Codification

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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Number of share options (or share units) exercised during the current period.

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