Other Postretirement Benefits (Tables) - Other Postretirement Benefit Plans, Defined Benefit [Member]

12 Months Ended

Dec. 27, 2015

Other Postretirement Benefits

Schedule of Components of Net Periodic Postretirement Benefit Cost

The components of net periodic postretirement benefit (income)/expense were as follows:

(In thousands)	December 27, 2015			December 28, 2014			December 29, 2013
Service cost	$	588		$	580		$	1,089
Interest cost	2,794			3,722			4,101
Amortization and other costs	5,197			7,299			4,440
Amortization of prior service credit	(9,495		)	(7,199		)	(13,051		)
Effect of curtailment	—			—			(49,122		)
Net periodic postretirement benefit (income)/expense	$	(916	)	$	4,402		$	(52,543	)

Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss)

The changes in the benefit obligations recognized in other comprehensive income/loss were as follows:

(In thousands)	December 27, 2015			December 28, 2014			December 29, 2013
Net actuarial (gain)/loss	$	(5,543	)	$	8,882		$	(13,500	)
Prior service cost/(credit)	1,145			(25,489		)	(1,690		)
Amortization of loss	(5,197		)	(4,948		)	(4,440		)
Amortization of prior service credit	9,495			7,199			13,051
Recognition of prior service credit due to curtailment	—			—			49,122
Total recognized in other comprehensive (income)/loss	(100		)	(14,356		)	42,543
Net periodic postretirement benefit (income)/expense	(916		)	4,402			(52,543		)
Total recognized in net periodic postretirement benefit income and other comprehensive (income)/loss	$	(1,016	)	$	(9,954	)	$	(10,000	)

Schedule of Changes in Projected Benefit Obligations and Plan Assets

The changes in the benefit obligation and plan assets and other amounts recognized in other comprehensive income/loss were as follows:

(In thousands)	December 27, 2015			December 28, 2014
Change in benefit obligation
Benefit obligation at beginning of year	$	81,054		$	100,932
Service cost	588			580
Interest cost	2,794			3,722
Plan participants’ contributions	4,230			3,834
Actuarial (gain)/loss	(5,543		)	12,091
Plan amendments	1,145			(25,489		)
Benefits paid	(13,221		)	(14,616		)
Benefit obligation at the end of year	71,047			81,054
Change in plan assets
Fair value of plan assets at beginning of year	—			—
Employer contributions	8,991			10,782
Plan participants’ contributions	4,230			3,834
Benefits paid	(13,221		)	(14,616		)
Fair value of plan assets at end of year	—			—
Net amount recognized	$	(71,047	)	$	(81,054	)
Amount recognized in the Consolidated Balance Sheets
Current liabilities	$	(8,168	)	$	(9,426	)
Noncurrent liabilities	(62,879		)	(71,628		)
Net amount recognized	$	(71,047	)	$	(81,054	)
Amount recognized in accumulated other comprehensive loss
Actuarial loss	$	26,599		$	37,339
Prior service credit	(41,309		)	(51,950		)
Total	$	(14,710	)	$	(14,611	)

Schedule of Assumptions Used

Weighted-average assumptions used in the actuarial computations to determine the postretirement benefit obligations were as follows:

	December 27, 2015		December 28, 2014
Discount rate	4.04	%	3.61	%
Estimated increase in compensation level	3.50	%	3.50	%

Weighted-average assumptions used in the actuarial computations to determine net periodic postretirement cost were as follows:

	December 27, 2015		December 28, 2014		December 29, 2013
Discount rate	3.74	%	4.22	%	3.70	%
Estimated increase in compensation level	3.50	%	3.50	%	3.50	%

Schedule of Health Care Cost Trend Rates

The assumed health-care cost trend rates were as follows:

	December 27, 2015		December 28, 2014
Health-care cost trend rate	7.20	%	7.20	%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)	5.00	%	5.00	%
Year that the rate reaches the ultimate trend rate	2023		2023

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one-percentage point change in assumed health-care cost trend rates would have the following effects:

	One-Percentage Point
(In thousands)	Increase		Decrease
Effect on total service and interest cost for 2015	$	75	$	(63	)
Effect on accumulated postretirement benefit obligation as of December 27, 2015	$	1,769	$	(1,503	)

Schedule of Expected Benefit Payments

The following benefit payments (net of plan participant contributions) under our Company’s postretirement plans, which reflect expected future services, are expected to be paid:

(In thousands)	Amount
2016	$	8,367
2017	7,684
2018	7,064
2019	6,436
2020	5,949
2021-2025 (1)	24,015

(1) While benefit payments under these plans are expected to continue beyond 2025, we have presented in this table only those benefit payments estimated over the next 10 years.