Reclassifications out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 29, 2018	Dec. 30, 2017	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense		$ (35,506)		$ (26,993)	$ (107,238)	$ (82,227)
Other expense (income), net		881		125	1,978	278
Income before income taxes		(82,473)		(64,260)	(199,422)	(136,866)
Provision for income taxes		12,374	$ 56,560	19,593	19,580	36,457
Net income		(70,099)		(44,667)	(179,842)	(100,409)
Gain (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	[1]	(210)		(3,422)	(2,813)	(12,577)
Provision for income taxes	[1]	53		1,335	715	4,905
Net income	[1]	(157)		(2,087)	(2,098)	(7,672)
Gain (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	[1]	(210)		(3,422)	(2,813)	(12,577)
Loss on Foreign Currency Translation | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other expense (income), net	[1]	0		0	0	(787)
Income before income taxes	[1]	0		0	0	(787)
Provision for income taxes	[1]	0		0	0	0
Net income	[1]	$ 0		$ 0	$ 0	$ (787)

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