Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013
Cash flows from operating activities:
Net income	$ 435,493	$ 340,705
Adjustments to reconcile net income to net cash flow from operating activities:
Depreciation and amortization	183,403	142,155
Facility consolidation and asset impairment charges	51,210	16,082
Pension contributions, net of pension expense	(100,983)	(76,251)
Equity income in unconsolidated investees, net	(166,787)	(28,929)
Stock-based compensation – equity awards	25,133	23,130
Change in other assets and liabilities, net	145,132	(67,934)
Net cash flow from operating activities	572,601	348,958
Cash flows from investing activities:
Purchase of property, plant and equipment	(91,559)	(72,668)
Payments for acquisitions, net of cash acquired	(202,724)	(17,527)
Payments for investments	(5,318)	(3,380)
Proceeds from investments	166,251	34,779
Proceeds from sale of certain assets	303,539	34,336
Net cash flow from (used for) investing activities	170,189	(24,460)
Cash flows from financing activities:
Payments of borrowings under revolving credit agreements, net	0	(205,000)
Proceeds from (payments of) unsecured floating rate term loans	(27,627)	154,800
Payments of unsecured fixed rate notes	(250,000)	0
Proceeds from unsecured fixed rate notes	666,732	591,396
Payments of debt issuance and financing costs	(10,005)	(21,838)
Dividends paid	(136,059)	(137,520)
Cost of common shares repurchased	(75,815)	(78,786)
Proceeds from issuance of common stock upon exercise of stock options	11,915	15,162
Distribution to noncontrolling interests	(877)	(218)
Deferred payments for acquisitions	(15,687)	(6,132)
Net cash from financing activities	162,577	311,864
Effect of currency exchange rate change on cash	(55)	(25)
Increase in cash and cash equivalents	905,312	636,337
Balance of cash and cash equivalents at beginning of period	469,203	175,030
Balance of cash and cash equivalents at end of period	1,374,515	811,367
Supplemental cash flow information:
Cash paid for taxes, net of refunds	112,802	102,793
Cash paid for interest	167,513	85,228
Non-cash investing and financing activities:
Assets-held-for-sale proceeds	146,428	0
Capital expenditures	(11,520)	0
London Broadcasting Company [Member]
Non-cash investing and financing activities:
Escrow deposit disbursement related to London Broadcasting Company television stations acquisition	$ (134,908)	$ 0