Stock Options, Other Stock Awards and Warrants (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 25, 2016	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Stock Options, Other Stock Awards and Warrants [Abstract]
Number of shares of common stock reserved for issuance under stock incentive plans for employees and non-employee directors (in shares)	9,279
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 61,624	$ 53,880	$ 36,152
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive plans, vesting period	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive plans, vesting period	5 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 19,908	$ 19,052	$ 15,643
Number of shares [Abstract]
Outstanding at beginning of year (in shares)	955	937	702
Granted (in shares)	245	254	281
Forfeited (in shares)	(41)	(52)	(39)
Vested (in shares)	(364)	(184)	(7)
Outstanding at end of year (in shares)	795	955	937	702
Weighted average grant-date fair value [Abstract]
Granted (in dollars per share)	$ 75.23	$ 62.95	$ 52.06
Forfeited (in dollars per share)	59.37	51.57	44.44
Vested (in dollars per share)	43.89	39.87	41.19
Outstanding at end of year (in dollars per share)	61.65	$ 51.22	$ 45.74
Restricted Stock Units (RSUs) [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches			2
Number of shares [Abstract]
Granted (in shares)			119	468
Total Shares Prescribed by Employment Agreement (in shares)				587
Weighted average grant-date fair value [Abstract]
Outstanding at end of year (in dollars per share)	35.56
Weighted average assumptions used in determining the fair value of option grants [Abstract]
Share Price (in dollars per share)	$ 47.28
Stock price volatility	26.12%
Risk-free interest rate	0.65%
Expected dividend yield	3.38%
Restricted Stock Units (RSUs) [Member] \| Chief Executive Officer [Member] \| Stock Price Hurdle One [Member]
Weighted average assumptions used in determining the fair value of option grants [Abstract]
Stock price hurdle (in dollars per share)	$ 45
Restricted Stock Units (RSUs) [Member] \| Chief Executive Officer [Member] \| Stock Price Hurdle Two [Member]
Weighted average assumptions used in determining the fair value of option grants [Abstract]
Stock price hurdle (in dollars per share)	52
Restricted Stock Units (RSUs) [Member] \| Chief Executive Officer [Member] \| Stock Price Hurdle Three [Member]
Weighted average assumptions used in determining the fair value of option grants [Abstract]
Stock price hurdle (in dollars per share)	56
Restricted Stock Units (RSUs) [Member] \| Chief Executive Officer [Member] \| Stock Price Hurdle Four [Member]
Weighted average assumptions used in determining the fair value of option grants [Abstract]
Stock price hurdle (in dollars per share)	$ 60
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 19,908	$ 19,052	$ 15,643
Total unrecognized compensation cost	$ 29,360
Weighted average period for recognition of total unrecognized compensation expense	19 months
Stock Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares granted (in shares)	276	90
Compensation expense (income)	$ 34,248	$ 27,960	$ 11,315
Total unrecognized compensation cost	$ 23,495
Weighted average period for recognition of total unrecognized compensation expense	19 months
Percentage of Target Number of Shares, Range Lower Limit	0.00%
Percentage of Target Number of Shares, Range Upper Limit	200.00%
Number of shares [Abstract]
Outstanding at beginning of year (in shares)	992	655	943
Granted (in shares)	529	362	322
Forfeited (in shares)	(23)	(25)	(32)
Cancelled (in shares)	0	0	(578)
Vested (in shares)	(424)	0	0
Outstanding at end of year (in shares)	1,074	992	655	943
Weighted average grant-date fair value [Abstract]
Granted (in dollars per share)	$ 74.69	$ 61.85	$ 52.11
Forfeited (in dollars per share)	61.86	53.45	43.21
Cancelled (in dollars per share)	0	0	36.14
Vested (in dollars per share)	47.21	0	0
Outstanding at end of year (in dollars per share)	$ 62.19	$ 53.17	$ 49.57
Cash-settled Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 0	$ 0	$ (113)
Stock Awards Non Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 1,630	$ 1,449	$ 1,834
Number of deferred shares (in shares)	16	16	26
Number of shares [Abstract]
Granted (in shares)	23	20	34
Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 5,838	$ 5,419	$ 7,473
Total unrecognized compensation cost	$ 6,603
Weighted average period for recognition of total unrecognized compensation expense	22 months
Stock options [Roll Forward]
Outstanding at beginning of year (in shares)	3,445	4,186	5,543
Granted (in shares)	492	549	684
Exercised (in shares)	1,143	1,280	1,951
Expired or forfeited (in shares)	26	10	90
Outstanding at end of year (in shares)	2,768	3,445	4,186	5,543
Exercisable at end of year (in shares)	1,708	2,208	2,374
Weighted average exercise price [Abstract]
Granted (in dollars per share)	$ 74.42	$ 61.77	$ 52.11
Exercised (in dollars per share)	41.75	37.54	31.07
Expired or forfeited (in dollars per share)	56.43	46.38	39.85
Outstanding at end of year (in dollars per share)	53.21	46.41	41.68
Exercisable at end of year (in dollars per share)	$ 45.5	41.36	38.9
Outstanding at end of year, weighted average remaining contractual life	3 years 9 months 4 days
Exercisable at end of year, weighted average exercise price remaining contractual life	2 years 10 months 2 days
Outstanding at end of year, aggregate intrinsic value	$ 69,619
Exercisable at end of year, aggregate intrinsic value	$ 56,135
Weighted average fair value of awards granted (in dollars per share)	$ 13.01	$ 9.29	$ 8.4
Weighted average assumptions used in determining the fair value of option grants [Abstract]
Risk-free interest rate	1.16%	1.34%	1.42%
Expected dividend yield	2.74%	2.98%	3.30%
Expected volatility	26.00%	23.00%	26.00%
Expected option life	5 years	5 years	5 years
Intrinsic values of options exercised	$ 47,992	$ 41,906	$ 44,890

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Net number of share options (or share units) granted, the receipt of which has been deferred to a certain future date.

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Adjustment to shares granted relative to vested stock performance awards for 3 year periods that have performed below or above 100% of target.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
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Aggregate number of common shares reserved for future issuance.

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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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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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

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Weighted average expected volatility rate of share-based compensation awards.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into 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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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 per share amount at which grantees can acquire shares of common stock by exercise of options.

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Price of a single share of a number of saleable stocks of a company.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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