Reclassifications out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019		Jun. 30, 2018
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (34,732)	$ (35,866)	$ (69,927)		$ (71,732)
Income before income taxes	(70,303)	(90,509)	(56,703)		(116,950)
Provision for income taxes	16,586	19,825	13,711		7,208
Net income	(53,717)	(70,684)	(42,992)		(109,742)
Loss on Qualifying Hedges | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	498	(346)	1,760	[1]	(2,603)	[1]
Provision for income taxes	(126)	88	(446)	[1]	661	[1]
Net income	372	(258)	1,314	[1]	(1,942)	[1]
Loss on Qualifying Hedges | Interest Rate Contract | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 498	$ (346)	$ 1,760	[1]	$ (2,603)	[1]

[1] Amounts in parentheses indicate debits to profit/loss