SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Effects of Topic 606 (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 29, 2018	Dec. 30, 2017	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Inventories	$ 399,905	$ 420,948		$ 399,905		$ 384,705
Contract asset - costs and profits in excess of billings	112,620	16,165		112,620		67,672
Accrued expenses	106,929	81,029		106,929		83,072
Deferred income taxes	45,076	34,906		45,076		38,356
Retained earnings	2,022,538	1,954,344		2,022,538		1,964,115
Net sales	678,692		$ 680,779	2,059,781	$ 2,030,989
Operating income	38,360		$ 60,090	165,990	$ 203,196
Calculated Under Revenue Guidance In Effect Before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Inventories	463,184	420,948		463,184
Contract asset - costs and profits in excess of billings	26,369	16,165		26,369
Accrued expenses	101,878	81,029		101,878
Deferred income taxes	40,451	34,906		40,451
Retained earnings	2,009,242	1,954,344		2,009,242
Net sales	666,095			2,024,921
Operating income	35,697			161,289
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Inventories	(63,279)			(63,279)		(36,243)
Contract asset - costs and profits in excess of billings	86,251			86,251		51,507
Accrued expenses	5,051			5,051		2,043
Deferred income taxes	4,625			4,625		3,450
Retained earnings	13,296	9,771		13,296		$ 9,771
Net sales	12,597			34,860
Operating income	$ 2,663	$ 13,121		$ 4,701