Defined Benefit Pension Plans - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Disclosure Defined Benefit Pension Plans Components Of Net Periodic Benefit Cost And Other Amounts Recognized In Other Comprehensive Loss [Abstract]
Service cost	$ 2,776	$ 2,216	$ 1,856
Interest cost	40,208	40,830	42,061
Expected return on assets	(45,280)	(41,780)	(47,621)
Curtailments	(186)	154	(489)
Settlement cost	42	23	115
Amortization of:
Prior service cost	(6)	9	9
Net actuarial loss	19,699	19,053	17,052
Net periodic benefit cost	17,253	20,505	12,983
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net (gain) loss	(20,965)	15,186	41,921
Prior service credit (cost)	6	(380)	(9)
Total (gain) loss recognized in other comprehensive income	(20,959)	14,806	41,912
Total recognized in net periodic benefit cost and other comprehensive loss	$ (3,706)	$ 35,311	$ 54,895