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Other Employee Benefit Plans (Details) (Narrative) (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 27, 2014
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Dec. 28, 2013
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Dec. 29, 2012
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| Defined Contribution Plan Disclosure [Line Items] | |||
| Amount of the Company's contributions to the 401(k) plan | $ 18,000,000 | $ 19,000,000 | $ 22,000,000 |
| Maximum allowed percentage of employee's pre-tax salary contributed to the 401(k) plan | 100.00% | ||
| Employer matching contribution, percent of match | 6.00% | ||
| Amount of annual maximum allowed employer matching contributions per employee | $ 11,700 | $ 11,475 | $ 11,250 |