Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 24, 2012	Jun. 26, 2011
Cash flows from operating activities:
Net income	$ 211,393	$ 263,669
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	95,817	99,868
Facility consolidation charges	9,885	14,050
Pension contributions, net of pension expense	(76,266)	(21,504)
Equity income in unconsolidated investees, net	(12,975)	(11,431)
Stock-based compensation - equity awards	12,598	14,953
Change in other assets and liabilities, net	76,130	55,203
Net cash flow from operating activities	316,582	414,808
Cash flows from investing activities:
Purchase of property, plant and equipment	(38,352)	(29,251)
Payments for acquisitions, net of cash acquired	(9,180)	(11,925)
Payments for investments	(500)	(14,797)
Proceeds from investments	10,393	25,681
Proceeds from sale of assets	4,040	34,430
Net cash (used for) provided by investing activities	(33,599)	4,138
Cash flows from financing activities:
Payments of borrowings under revolving credit agreements, net	205,000	99,000
Payments of unsecured fixed rate notes	(306,571)	(433,432)
Dividends paid	(66,241)	(19,211)
Cost of common shares repurchased	(81,010)
Proceeds from issuance of common stock upon exercise of stock options	2,033	1,657
Repurchase of noncontrolling membership interest		(85,149)
Deferred payments for acquisitions	(1,027)
Net cash used for financing activities	(247,816)	(437,135)
Effect of currency exchange rate change on cash	(4)	516
Net increase (decrease) in cash and cash equivalents	35,163	(17,673)
Balance of cash and cash equivalents at beginning of period	166,926	183,014
Balance of cash and cash equivalents at end of period	$ 202,089	$ 165,341