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Share-Based Awards (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Apr. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning	4,975
Granted	543
Exercised	(171)
Canceled	(17)
Ending	5,330
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Weighted Average Exercise Price, Outstanding, Beginning (in dollars per share)	$ 44.72
Granted, Weighted Average Exercise Price (in dollars per share)	74.19
Exercised, Weighted Average Exercise Price (in dollars per share)	34.57
Canceled, Weighted Average Exercise Price (in dollars per share)	72.14
Weighted Average Exercise Price, Outstanding, Ending (in dollars per share)	$ 47.96
Options Exercisable, Beginning	3,318
Options Exercisable, Ending	3,739
Weighted Average Exercise Price on Exercisable Options, Beginning (in dollars per share)	$ 34.86
Weighted Average Exercise Price on Exercisable Options, Ending (in dollars per share)	$ 38.55
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Share-based compensation expense	$ 15.5	$ 13.8
Unrecognized compensation cost	$ 13.6
Weighted average recognition period	1 year 10 months
Fair Value Assumptions and Methodology [Abstract]
Stock purchase plan discount from market value	15.00%
Shares Authorized and Available [Abstract]
Total shares authorized	10,500
Available for future issuance	8,380
Stock Incentive Plan (2015)
Shares Authorized and Available [Abstract]
Total shares authorized	3,500		3,500
Available for future issuance	3,452
Employee Stock Purchase Plan (2006)
Shares Authorized and Available [Abstract]
Total shares authorized	7,000
Available for future issuance	4,928
Stock Option
Fair Value Assumptions and Methodology [Abstract]
Expected life in years	6 years 6 months	6 years 6 months
Interest rate	1.70%	2.00%
Volatility	35.00%	36.10%
Dividend yield	1.60%	1.50%
Weighted average fair value per share (in dollars per share)	$ 23.18	$ 24.83
Stock Option | Other Plans
Shares Authorized and Available [Abstract]
Available for future issuance	0
Employee Stock Purchase Plan
Fair Value Assumptions and Methodology [Abstract]
Expected life in years	1 year	1 year
Interest rate	0.20%	0.10%
Volatility	18.90%	21.40%
Dividend yield	1.60%	1.40%
Weighted average fair value per share (in dollars per share)	$ 16.51	$ 17.81
Employee stock purchase plan shares issued	166	193

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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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Unrecognized cost of unvested share-based compensation awards.

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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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Discount rate from fair value on offering date that participants pay for shares.

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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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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 maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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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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