Quarterly report pursuant to Section 13 or 15(d)

Components of Pension Cost (Detail)

v2.4.0.8
Components of Pension Cost (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Jun. 29, 2013
Defined Benefit Plan Disclosure [Line Items]        
Service cost - benefits earned during the period $ 6,097 $ 6,327 $ 12,182 $ 13,220
Interest cost on projected benefit obligations 20,404 17,978 40,793 36,029
Expected return on plan assets (22,697) (23,628) (45,378) (47,310)
Amortization of deferred amounts, Net deferred actuarial losses 9,389 21,326 18,773 42,688
Amortization of deferred amounts, Deferred prior service costs 1,362 316 2,724 657
Net periodic pension cost $ 14,555 $ 22,319 $ 29,094 $ 45,284