Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 28, 2015
Cash flows from operating activities:
Net income	$ 210,321	$ 258,976
Adjustments to reconcile net income to net cash flow from operating activities:
Depreciation and amortization	101,402	163,842
Stock-based compensation	9,055	11,875
Other losses on sales of assets and business	8,863	33,177
Equity loss (income) in unconsolidated investees, net	2,981	(7,696)
Pension contributions, net of pension expense	1,093	(122,512)
Change in other assets and liabilities, net	(104,471)	(12,305)
Net cash flow from operating activities	229,244	325,357
Cash flows from investing activities:
Purchase of property and equipment	(40,050)	(55,021)
Payments for acquisitions of businesses, net of cash acquired	(53,552)	(37,292)
Payments for investments	(15,997)	(30,168)
Proceeds from investments	4,617	12,402
Proceeds from sale of assets	0	110,524
Net cash flow from/(used for) investing activities	(104,982)	445
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facilities, net	310,000	45,000
Debt repayments	(229,552)	(86,456)
Dividends paid	(61,462)	(90,790)
Repurchases of common stock	(150,917)	(75,090)
Other, net	(19,378)	(17,928)
Net cash flow used for financing activities	(151,309)	(225,264)
Effect of currency exchange rate change on cash	0	66
Increase (decrease) in cash and cash equivalents	(27,047)	100,604
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	102,153	156,796
Cash and cash equivalents from discontinued operations, end of period	0	62,292
Balance of cash and cash equivalents at end of period	102,153	219,088
Supplemental cash flow information:
Cash paid for income taxes, net of refunds	104,646	37,286
Cash paid for interest	116,247	134,580
Non-cash investing activities:
Non-monetary exchange of investment for acquisition	$ 0	$ (34,403)