Defined Benefit Plan, Actual Return on Plan Assets Percentage

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- Definition

Defined Contribution Plan, Contributions Per Employee Subject to Employer Match

+ References

No definition available.

+ Details

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- Definition

Employer 401(k) Matching Contribution

+ References

No definition available.

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- Definition

Maximum 401(k) Plan Contribution Rates as a Percentage of Employees Earnings

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No definition available.

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- Definition

Multi Employer Plan Employer Contribution Percentage

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No definition available.

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- Definition

Multiemployer Plan, Expenses

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No definition available.

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- Definition

Multiemployer Plans, Expected Funding Deficiency, Period

+ References

No definition available.

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- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

The amount of employer securities or securities of parties related to the employer that are included in plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (n)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

+ Details

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

+ Details

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- Definition

The number of employer shares or related party shares included in plan assets.

+ References

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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- Definition

Indicate whether the multiemployer plan is less than 65 percent funded, between 65 and less than 80 percent funded, or at least 80 percent funded. The acceptable values are: (1) "less than 65 percent", (2) "between 65 and less than 80 percent", (3) "at least 80 percent", and (4) "NA". A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=49170332&loc=SL14450657-114947

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Retirement plans - Narrative (Detail) - USD ($)	12 Months Ended
Retirement plans - Narrative (Detail) - USD ($)	Dec. 31, 2015	Dec. 28, 2014	Dec. 29, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
401(k) employee maximum matching contribution	50.00%
401(k) employer matching contribution	100.00%
Contributions per employee subject to employer match	5.00%
Compensation expense related to 401(k) contributions	$ 18,200,000	$ 19,300,000	$ 15,000,000
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer's contributions as a percent of total contribution	5.00%
Plans in red zone \| Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multi-employer plans funded percentage (less than 65% of red zone, less than 80% of orange zone, and at least 80% of green zone plans in 2012)	Less than 65 percent
Plans in yellow zone \| Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multi-employer plans funded percentage (less than 65% of red zone, less than 80% of orange zone, and at least 80% of green zone plans in 2012)	At least 80 percent
Plans in yellow zone \| Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multi-employer plans funded percentage (less than 65% of red zone, less than 80% of orange zone, and at least 80% of green zone plans in 2012)	Between 65 and less than 80 percent
Retirement Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated benefit obligation	$ 576,300,000	$ 558,800,000
Actuarial loss estimated to be amortized from accumulated other comprehensive loss into net periodic benefit cost	6,800,000
Prior service credit estimated to be amortized from accumulated other comprehensive loss into net periodic benefit cost	$ 700,000
Actual rate of return on plan assets (as a percent)	1.00%	8.20%	15.70%
Plan assets, shares of common stock		78,000
Plan assets, value of common stock		$ 2,600,000
Multiemployer Plans, Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected funding deficiency, period	6 years
Expenses incurred for multi-employer withdrawal liabilities	$ 0	$ 0	$ 0