Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015		Jun. 29, 2014
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net Income	$ 33,152		$ 123,990
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Stock-based compensation	16,796		16,026
Pension credit, net of contributions	(14,583)		(18,932)
Depreciation	35,020		49,864
Amortization of contract intangible assets and liabilities	(7,079)		(17,946)
Amortization of other intangible assets	96,208		124,874
Income on equity investments, net	(82,847)		(156,587)
Distributions from equity investments	129,148	[1]	155,730
Non-cash loss on extinguishment of debt	33,480		0
Original issue discount payments	(6,158)		0
Amortization of debt issuance costs and original issue discount	6,690		6,675
Gain on investment transactions	(8,820)		(2,184)
Other non-operating (gain) loss	(211)		1,138
Change in excess tax benefits from stock-based awards	532		(896)
Transfers from restricted cash	5		684
Changes in working capital items, excluding effects from acquisitions:
Accounts receivable, net	16,925		55,291
Prepaid expenses and other current assets	(29,812)		(7,156)
Accounts payable	(4,174)		3,143
Employee compensation and benefits, accrued expenses and other current liabilities	(8,567)		(36,291)
Deferred revenue	(2,420)		16,757
Income taxes	(284,524)		29,724
Change in broadcast rights, net of liabilities	8,998		(3,881)
Deferred income taxes	(5,805)		(57,589)
Other, net	1,668		(11,536)
Net cash (used in) provided by operating activities	(76,378)		270,898
Net Cash Provided by (Used in) Investing Activities [Abstract]
Capital expenditures	(38,717)		(39,597)
Acquisitions, net of cash acquired	(69,974)		(191,596)
Increase in restricted cash related to acquisition of Local TV	0		201,922
Transfers to restricted cash, net	0		(1,109)
Investments	(2,911)		(2,330)
Distributions from equity investments (Note 5)	0		159,602
Proceeds from sales of investments and real estate	13,750		705
Net cash (used in) provided by investing activities	(97,852)		127,597
Net Cash Provided by (Used in) Financing Activities [Abstract]
Long-term borrowings	1,100,000		0
Repayments of long‑term debt	(1,100,342)		(11,848)
Repayment of Senior Toggle Notes	0		(172,237)
Long-term debt issuance costs	(20,207)		(2,584)
Payments of dividends	(672,744)		0
Common stock repurchases	(181,276)		0
Change in excess tax benefits from stock-based awards	(532)		896
Tax withholdings related to net share settlements of share-based awards	(3,831)		(3,201)
Proceeds from stock option exercises	166		1,006
Contribution from noncontrolling interest	1,324		0
Net cash used in financing activities	(877,442)		(187,968)
Net (Decrease) Increase in Cash and Cash Equivalents	(1,051,672)		210,527
Cash and cash equivalents, beginning of period	1,455,183		640,697
Cash and cash equivalents, end of period	403,511		851,224
Supplemental Cash Flow Information [Abstract]
Interest	81,981		67,086
Income taxes, net of refunds	$ 311,672		$ 107,539

[1] Cash distributions for the three and six months ended June 29, 2014 include $160 million of the Company’s share of the proceeds from the sale by CV of its Apartments.com business, which is reflected as an inflow from investing activities in the unaudited condensed consolidated statement of cash flows.