Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 01, 2018	Dec. 02, 2017	Dec. 03, 2016
Cash flows from operating activities:
Net income including non-controlling interests	$ 171,232,000	$ 59,466,000	$ 121,917,000
Adjustments to reconcile net income including non-controlling interests to net cash provided by operating activities:
Depreciation	68,636,000	51,072,000	49,189,000
Amortization	76,490,000	36,243,000	28,495,000
Deferred income taxes	(55,585,000)	(20,212,000)	3,828,000
Income from equity method investments, net of dividends received	(3,172,000)	(2,640,000)	(3,701,000)
Share-based compensation	17,113,000	17,503,000	13,344,000
Pension and other postretirement benefit plan contributions	(6,558,000)	(4,704,000)	(6,572,000)
Pension and other postretirement benefit plan income (expense)	(14,332,000)	(6,069,000)	11,634,000
Excess tax benefit from share-based compensation		(2,010,000)	(1,641,000)
Non-cash (gain) loss on mark to market adjustment related to contingent consideration liability	1,126,000	(4,233,000)	(6,032,000)
Non-cash charge for the sale of inventories revalued at the date of acquisition		11,289,000	528,000
Change in assets and liabilities, net of effects of acquisitions:
Trade receivables, net	(39,429,000)	(26,826,000)	1,874,000
Inventories	(17,068,000)	(8,660,000)	(7,476,000)
Other assets	(35,184,000)	(12,986,000)	(8,383,000)
Trade payables	25,401,000	44,365,000	(12,292,000)
Accrued compensation	(306,000)	12,249,000	879,000
Other accrued expenses	(4,282,000)	9,809,000	(5,548,000)
Income taxes payable	(4,048,000)	14,973,000	1,707,000
Other liabilities	21,429,000	(14,685,000)	20,105,000
Other	78,472,000	(11,130,000)	34,425,000
Net cash provided by operating activities	253,312,000	140,790,000	195,688,000
Cash flows from investing activities:
Purchased property, plant and equipment	(68,263,000)	(54,934,000)	(63,310,000)
Purchased businesses, net of cash acquired	3,499,000	(1,745,415,000)	(52,547,000)
Purchased investments		(1,250,000)
Proceeds from sale of property, plant and equipment	2,923,000	672,000	4,332,000
Net cash used in investing activities	(61,841,000)	(1,800,927,000)	(111,525,000)
Cash flows from financing activities:
Proceeds from issuance of long-term debt		2,856,278,000
Repayment of long-term debt	(185,750,000)	(1,079,250,000)	(22,500,000)
Payment of debt issuance costs		(24,207,000)
Net proceeds from (payments on) notes payable	(13,276,000)	(7,776,000)	7,746,000
Dividends paid	(31,124,000)	(29,612,000)	(27,518,000)
Proceeds from stock options exercised	6,237,000	17,705,000	11,269,000
Excess tax benefit from share-based compensation		2,010,000	1,641,000
Purchase of redeemable non-controlling interest		(3,127,000)
Repurchases of common stock	(4,688,000)	(21,831,000)	(23,228,000)
Net cash (used in) provided by financing activities	(228,601,000)	1,710,190,000	(52,590,000)
Effect of exchange rate changes on cash and cash equivalents	(6,475,000)	2,100,000	(8,496,000)
Net change in cash and cash equivalents	(43,605,000)	52,153,000	23,077,000
Cash and cash equivalents at beginning of year	194,398,000	142,245,000	119,168,000
Cash and cash equivalents at end of year	150,793,000	194,398,000	142,245,000
Supplemental disclosure of cash flow information:
Dividends paid with company stock	207,000	299,000	318,000
Cash paid for interest, net of amount capitalized of $285, $306, and $752 for the years ended December 1, 2018, December 2, 2017 and December 3, 2016, respectively	109,428,000	43,790,000	29,505,000
Cash paid for income taxes, net of refunds	$ 36,841,000	$ 37,986,000	$ 46,815,000