Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Operating activities:
Net income	$ 292,633	$ 234,299	$ 212,425
Income from discontinued operations and dispositions, net of income taxes	(135,743)	(18,593)	(23,640)
Income from continuing operations	156,890	215,706	188,785
Adjustments to reconcile net income from continuing operations to net cash provided by continuing operations:
Restructuring and contract termination charges, net	12,657	5,124	13,547
Depreciation and amortization	105,000	99,972	105,364
Stock-based compensation	25,421	17,158	17,278
Pension and other postretirement (benefits) expense	(10,439)	14,511	9,381
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	2,162	16,183	0
Deferred taxes	28,854	(4,549)	(9,602)
Deferred Income Tax Expense (Benefit), Continuing Operations, Discontinuing Operations	28,854	(6,526)	(6,571)
Contingencies and Non-Cash Tax Matters	182	(291)	(5,342)
Amortization of deferred debt issuance costs, interest rate hedge and accretion of discounts	2,592	2,137	1,496
Losses (gains) on disposition of businesses and assets, net	309	(5,562)	0
Amortization of acquired inventory revaluation	6,188	396	7,275
Excess tax benefit from exercise of common stock options	0	0	(2,435)
Changes in assets and liabilities which (used) provided cash, excluding effects from companies purchased and divested:
Accounts receivable, net	(36,633)	(18,960)	4,061
Inventories, net	(17,923)	6,752	(27,931)
Accounts payable	34,331	30,716	(10,897)
Accrued expenses and other	(17,436)	(53,540)	(30,177)
Net cash provided by operating activities of continuing operations	292,155	323,776	263,834
Net cash (used in) provided by operating activities of discontinued operations	(3,702)	26,839	23,264
Net cash provided by operating activities	288,453	350,615	287,098
Investing activities:
Capital expenditures	(39,089)	(31,702)	(28,218)
Proceeds from Derivative Instrument, Investing Activities	36,541	0	0
Payments to Acquire Investments	(10,783)	0	0
Proceeds from Divestiture of Businesses	1,100	21,000	0
Changes in restricted cash balances	17,218	(16,959)	59
Proceeds from surrender of life insurance policies	45	44	757
Activity related to acquisitions, net of cash and cash equivalents acquired	(1,527,183)	(71,924)	(72,040)
Net cash used in investing activities of continuing operations	(1,522,151)	(99,541)	(99,442)
Net cash provided by (used in) investing activities of discontinued operations	272,779	(1,302)	(1,414)
Net cash used in investing activities	(1,249,372)	(100,843)	(100,856)
Financing activities:
Payments on revolving credit facility	(235,965)	(902,507)	(485,000)
Proceeds from revolving credit facility	1,060,952	420,507	451,000
Proceeds from sale of senior debt	0	546,190	0
Payments of debt financing costs	0	(7,868)	0
Net payments on other credit facilities	(2,831)	(1,096)	(1,072)
Settlement of cash flow hedges	(13,824)	(1,900)	18,706
Payments for acquisition-related contingent consideration	(8,940)	(155)	(103)
Excess tax benefit from exercise of common stock options	0	0	2,435
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options	18,004	14,418	14,905
Purchases of common stock	(3,834)	(151,801)	(76,439)
Dividends paid	(30,793)	(30,799)	(31,571)
Net cash provided by (used in) financing activities of continuing operations	782,769	(115,011)	(107,139)
Net cash used in financing activities of discontinued operations	(533)	0	0
Net cash provided by (used in) financing activities	782,236	(115,011)	(107,139)
Effect of exchange rate changes on cash and cash equivalents	21,552	(13,428)	(15,992)
Net (decrease) increase in cash and cash equivalents	(157,131)	121,333	63,111
Cash and cash equivalents at beginning of year	359,265	237,932	174,821
Cash and cash equivalents at end of year	202,134	359,265	237,932
Supplemental disclosures of cash flow information
Interest	35,780	30,718	31,741
Income taxes	$ 77,607	$ 43,549	$ 49,275