GUARANTOR/NON-GUARANTOR FINANCIAL INFORMATION - Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries
Proceeds from exercises under stock plans			$ 5,711	$ 10,168
Cash flows from operating activities:
Net earnings	$ 34,680	$ 47,322	75,160	87,283
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization			41,657	41,754
Noncash loss on trading securities			229	188
Stock-based compensation			5,374	4,590
Defined benefit pension plan expense			(1,159)	314
Contribution to defined benefit pension plan			(731)	(25,379)
(Gain)/loss on sale of property, plant and equipment			(287)	(64)
Equity in earnings in nonconsolidated subsidiaries	0	0	0	0
Deferred income taxes	(2,319)	(6,718)	2,500	7,347
Changes in assets and liabilities:
Receivables			(73,192)	(64,304)
Inventories			(20,592)	(24,963)
Prepaid expenses and other assets			(34,096)	(5,892)
Accounts payable			(18,645)	10,715
Accrued expenses			(10,523)	5,252
Other noncurrent liabilities			(480)	1,973
Income taxes payable (refundable)			(4,288)	2,028
Net cash flows from operating activities			53,658	55,730
Cash flows from investing activities:
Purchase of property, plant and equipment			(31,816)	(26,183)
Proceeds from sale of assets			64,393	890
Payments to Acquire Businesses, Net of Cash Acquired			(9,300)	0
Proceeds from settlement of net investment hedge			(1,621)	5,123
Other, net			2,404	(2,467)
Net cash flows from investing activities			24,060	(22,637)
Cash flows from financing activities:
Proceeds/(payments) under short-term agreements			130	(369)
Proceeds from Issuance of Long-term Debt			237,641	0
Principal payments on long-term borrowings			(495)	(434)
Proceeds from Derivative Instrument, Financing Activities			(2,467)	0
Payments of Debt Issuance Costs			(2,322)	0
Dividends paid			(17,003)	(16,913)
Intercompany Interest On Long-term Note				(2,889)
Intercompany capital contribution			0	0
Dividends to noncontrolling interest			(4,852)	(2,889)
Purchase of noncontrolling interest			(5,510)	0
Intercompany dividends			0	0
Payments to Acquire Additional Interest in Subsidiaries			(5,510)
Purchase of common treasury shares - stock plan exercises			(1,769)	(3,056)
Net cash flows from financing activities			165,065	(13,493)
Effect of exchange rate changes on cash and cash equivalents			(13,000)	16,106
Net change in cash and cash equivalents			229,783	35,706
Cash, cash equivalents, and restricted cash—beginning of year			492,805	412,516
Cash, cash equivalents, and restricted cash—end of period	722,588	448,222	722,588	448,222
Restructuring Costs			2,791	0
Asset Impairment Charges			6,084	0
Purchase of treasury shares			(43,999)	0
Eliminations
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries
Proceeds from exercises under stock plans			0	0
Cash flows from operating activities:
Net earnings	(52,879)	(34,569)	(78,620)	(62,555)
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization			0	0
Noncash loss on trading securities			0	0
Stock-based compensation			0	0
Defined benefit pension plan expense			0	0
Contribution to defined benefit pension plan			0	0
(Gain)/loss on sale of property, plant and equipment			0	0
Equity in earnings in nonconsolidated subsidiaries	52,460	35,123	79,776	62,637
Deferred income taxes	0	0	0	0
Changes in assets and liabilities:
Receivables			(1,244)	69
Other noncurrent liabilities			0	0
Income taxes payable (refundable)			0	0
Net cash flows from operating activities			(88)	151
Cash flows from investing activities:
Purchase of property, plant and equipment			0	0
Proceeds from sale of assets			0	0
Payments to Acquire Businesses, Net of Cash Acquired			0
Proceeds from settlement of net investment hedge			0	0
Other, net			88	(151)
Net cash flows from investing activities			88	(151)
Cash flows from financing activities:
Proceeds/(payments) under short-term agreements			0	0
Proceeds from Issuance of Long-term Debt			0
Principal payments on long-term borrowings			0	0
Proceeds from Derivative Instrument, Financing Activities			0
Payments of Debt Issuance Costs			0
Dividends paid			0	0
Intercompany Interest On Long-term Note				0
Intercompany capital contribution			0	0
Dividends to noncontrolling interest			0
Purchase of noncontrolling interest				0
Intercompany dividends			0	0
Payments to Acquire Additional Interest in Subsidiaries			0
Purchase of common treasury shares - stock plan exercises			0	0
Net cash flows from financing activities			0	0
Effect of exchange rate changes on cash and cash equivalents			0	0
Net change in cash and cash equivalents			0	0
Cash, cash equivalents, and restricted cash—beginning of year			0	0
Cash, cash equivalents, and restricted cash—end of period	0	0	0	0
Restructuring Costs			0
Asset Impairment Charges			0
Purchase of treasury shares			0
Parent
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries
Proceeds from exercises under stock plans			5,711	10,168
Cash flows from operating activities:
Net earnings	32,960	45,664	72,241	84,643
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization			12,871	13,048
Noncash loss on trading securities			0	0
Stock-based compensation			5,374	4,590
Defined benefit pension plan expense			0	0
Contribution to defined benefit pension plan			0	0
(Gain)/loss on sale of property, plant and equipment			10	(20)
Equity in earnings in nonconsolidated subsidiaries	(21,291)	(28,827)	(45,878)	(57,321)
Deferred income taxes	(2,248)	(5,788)	3,343	5,539
Changes in assets and liabilities:
Receivables			(15,781)	(14,523)
Other noncurrent liabilities			640	874
Income taxes payable (refundable)			(11,054)	(7,737)
Net cash flows from operating activities			24,284	29,093
Cash flows from investing activities:
Purchase of property, plant and equipment			(10,051)	(8,126)
Proceeds from sale of assets			5	21
Payments to Acquire Businesses, Net of Cash Acquired			0
Proceeds from settlement of net investment hedge			(1,621)	5,123
Other, net			6,335	(8,313)
Net cash flows from investing activities			(5,332)	(11,295)
Cash flows from financing activities:
Proceeds/(payments) under short-term agreements			0	0
Proceeds from Issuance of Long-term Debt			237,641
Principal payments on long-term borrowings			0	0
Proceeds from Derivative Instrument, Financing Activities			(2,467)
Payments of Debt Issuance Costs			(2,322)
Dividends paid			(17,003)	(16,913)
Intercompany Interest On Long-term Note				0
Intercompany capital contribution			(3,492)	(3,785)
Dividends to noncontrolling interest			0
Purchase of noncontrolling interest				0
Intercompany dividends			(75,325)	(22,662)
Payments to Acquire Additional Interest in Subsidiaries			0
Purchase of common treasury shares - stock plan exercises			(1,769)	(3,056)
Net cash flows from financing activities			247,625	9,076
Effect of exchange rate changes on cash and cash equivalents			0	0
Net change in cash and cash equivalents			266,577	26,874
Cash, cash equivalents, and restricted cash—beginning of year			83,329	67,225
Cash, cash equivalents, and restricted cash—end of period	349,906	94,099	349,906	94,099
Restructuring Costs			0
Asset Impairment Charges			2,518
Purchase of treasury shares			(43,999)
Guarantors
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries
Proceeds from exercises under stock plans			0	0
Cash flows from operating activities:
Net earnings	44,967	16,890	55,956	22,430
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization			7,063	7,113
Noncash loss on trading securities			0	0
Stock-based compensation			0	0
Defined benefit pension plan expense			0	0
Contribution to defined benefit pension plan			0	0
(Gain)/loss on sale of property, plant and equipment			(7)	0
Equity in earnings in nonconsolidated subsidiaries	(31,169)	(6,296)	(33,898)	(5,316)
Deferred income taxes	0	0	1,791	0
Changes in assets and liabilities:
Receivables			(43,990)	(28,010)
Other noncurrent liabilities			0	0
Income taxes payable (refundable)			(843)	542
Net cash flows from operating activities			(13,928)	(3,241)
Cash flows from investing activities:
Purchase of property, plant and equipment			(6,770)	(3,351)
Proceeds from sale of assets			209	11
Payments to Acquire Businesses, Net of Cash Acquired			0
Proceeds from settlement of net investment hedge			0	0
Other, net			13,752	6,604
Net cash flows from investing activities			7,191	3,264
Cash flows from financing activities:
Proceeds/(payments) under short-term agreements			0	0
Proceeds from Issuance of Long-term Debt			0
Principal payments on long-term borrowings			0	0
Proceeds from Derivative Instrument, Financing Activities			0
Payments of Debt Issuance Costs			0
Dividends paid			0	0
Intercompany Interest On Long-term Note				0
Intercompany capital contribution			3,492	3,785
Dividends to noncontrolling interest			0
Purchase of noncontrolling interest				(5,669)
Intercompany dividends			(11,296)	0
Payments to Acquire Additional Interest in Subsidiaries			0
Purchase of common treasury shares - stock plan exercises			0	0
Net cash flows from financing activities			14,788	(1,884)
Effect of exchange rate changes on cash and cash equivalents			(657)	212
Net change in cash and cash equivalents			7,394	(1,649)
Cash, cash equivalents, and restricted cash—beginning of year			5,304	6,071
Cash, cash equivalents, and restricted cash—end of period	12,698	4,422	12,698	4,422
Restructuring Costs			0
Asset Impairment Charges			0
Purchase of treasury shares			0
Non- Guarantors
Condensed consolidated financial information for the Company (Parent), the guarantor subsidiaries and the non-guarantor subsidiaries
Proceeds from exercises under stock plans			0	0
Cash flows from operating activities:
Net earnings	9,632	19,337	25,583	42,765
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization			21,723	21,593
Noncash loss on trading securities			229	188
Stock-based compensation			0	0
Defined benefit pension plan expense			(1,159)	314
Contribution to defined benefit pension plan			(731)	(25,379)
(Gain)/loss on sale of property, plant and equipment			(290)	(44)
Equity in earnings in nonconsolidated subsidiaries	0	0	0	0
Deferred income taxes	(71)	(930)	(2,634)	1,808
Changes in assets and liabilities:
Receivables			(12,177)	(21,840)
Other noncurrent liabilities			(1,120)	1,099
Income taxes payable (refundable)			7,609	9,223
Net cash flows from operating activities			43,390	29,727
Cash flows from investing activities:
Purchase of property, plant and equipment			(14,995)	(14,706)
Proceeds from sale of assets			64,179	858
Payments to Acquire Businesses, Net of Cash Acquired			(9,300)
Proceeds from settlement of net investment hedge			0	0
Other, net			(17,771)	(607)
Net cash flows from investing activities			22,113	(14,455)
Cash flows from financing activities:
Proceeds/(payments) under short-term agreements			130	(369)
Proceeds from Issuance of Long-term Debt			0
Principal payments on long-term borrowings			(495)	(434)
Proceeds from Derivative Instrument, Financing Activities			0
Payments of Debt Issuance Costs			0
Dividends paid			0	0
Intercompany Interest On Long-term Note				(2,889)
Intercompany capital contribution			0	0
Dividends to noncontrolling interest			(4,852)
Purchase of noncontrolling interest				5,669
Intercompany dividends			86,621	22,662
Payments to Acquire Additional Interest in Subsidiaries			(5,510)
Purchase of common treasury shares - stock plan exercises			0	0
Net cash flows from financing activities			(97,348)	(20,685)
Effect of exchange rate changes on cash and cash equivalents			(12,343)	15,894
Net change in cash and cash equivalents			(44,188)	10,481
Cash, cash equivalents, and restricted cash—beginning of year			404,172	339,220
Cash, cash equivalents, and restricted cash—end of period	$ 359,984	$ 349,701	359,984	$ 349,701
Restructuring Costs			2,791
Asset Impairment Charges			3,566
Purchase of treasury shares			$ 0