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Share-Based Awards (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Dec. 30, 2011
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Outstanding, beginning	5,478,000
Granted	564,000
Exercised	(695,000)
Canceled	(44,000)
Outstanding, ending	5,303,000
Outstanding Weighted Average Exercise Price	$ 34.70		$ 32.12
Granted, Weighted Average Exercise Price	$ 50.32
Exercised, Weighted Average Exercise Price	$ 27.06
Canceled, Weighted Average Exercise Price	$ 34.95
Options Exercisable	3,302,000		3,211,000
Weighted Average Exercise Price of Exercisable Options	$ 32.81		$ 32.27
Share-based compensation expense	$ 10.0	$ 8.8
Unrecognized compensation cost	$ 10.2
Weighted average recognition period	1 year 11 months
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan Shares Issued	239,000	313,000
Restricted Stock Units Issued	6,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	6 years 6 months	6 years 6 months
Interest rate	1.30%	2.80%
Volatility	36.60%	33.70%
Dividend yield	1.80%	2.00%
Weighted average fair value per share	$ 15.61	$ 13.35
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	1 year 0 months	1 year 0 months
Interest rate	0.20%	0.30%
Volatility	40.60%	27.80%
Dividend yield	1.70%	2.10%
Weighted average fair value per share	$ 15.58	$ 10.05

X

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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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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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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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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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-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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