Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 29, 2015
Cash flows from operating activities:
Net income	$ 95,936	$ 127,483
Adjustments to reconcile net income to net cash flow from operating activities:
Depreciation and amortization	50,635	81,570
Stock-based compensation	4,757	9,114
Other gains/losses on sales of assets	5,135	12,385
Equity income in unconsolidated investees, net	(2,933)	(5,058)
Pension contributions, net of pension expense	(752)	(5,606)
Change in other assets and liabilities, net	(25,720)	(44,913)
Net cash flow from operating activities	127,058	174,975
Cash flows from investing activities:
Purchase of property and equipment	(16,449)	(19,121)
Payments for acquisitions of businesses, net of cash acquired	(53,059)	(8,624)
Payments for investments	(10,047)	(5,000)
Proceeds from investments	4,617	7,883
Proceeds from sale of assets	0	103,813
Net cash flow (used for) from investing activities	(74,938)	78,951
Cash flows from financing activities:
Proceeds from (payments of) borrowings under revolving credit facilities, net	42,000	(130,000)
Debt repayments	(18,062)	(10,025)
Dividends paid	(30,853)	(45,257)
Repurchases of common stock	(75,411)	(37,520)
Other, net	(19,788)	(13,536)
Net cash flow used for financing activities	(102,114)	(236,338)
Effect of currency exchange rate change on cash	0	(391)
Increase (decrease) in cash and cash equivalents	(49,994)	17,197
Cash and cash equivalents from continuing operations, at beginning of period	129,200	110,305
Cash and cash equivalents from discontinued operations, at beginning of period	0	8,179
Balance of cash and cash equivalents at beginning of period	129,200	118,484
Cash and cash equivalents from continuing operations, end of period	79,206	122,256
Cash and cash equivalents from discontinued operations, end of period	0	13,425
Balance of cash and cash equivalents at end of period	79,206	135,681
Supplemental cash flow information:
Cash paid for income taxes, net of refunds	27,430	17,675
Cash paid for interest	$ 35,261	$ 47,981