Condensed Consolidated Financial Statements - Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 28, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 28, 2014	Dec. 29, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 284,163		$ 25,944	$ 378,455
Capital expenditures	(99,659)		(89,084)	(89,438)
Investments	(5,993)		(23,042)	(2,330)
Acquisitions, net of cash acquired	0		(74,959)	(279,833)
Proceeds from sales of real estate and other assets	507,692		4,930	49,870
Transfers from (to) restricted cash	297		1,112	(1,109)
Increase (Decrease) in Restricted Cash, Related to Acquisitions	0		0	201,922
Distributions from equity investments	0		10,328	180,521
Intercompany Distribution from Affiliate	0			0
Proceeds from sales of investments	0		44,982	659,395
Net cash provided by (used in) investing activities	402,337		(125,733)	718,998
Long-term borrowings	0		1,100,000	0
Long-term borrowings related to Publishing Spin-off (Note 2)	0		0	346,500
Repayments of Long-term Debt	(27,842)		(1,114,262)	(299,285)
Repayment of Senior Toggle Notes	0		0	(172,237)
Payments of Debt Issuance Costs	(736)		(20,202)	0
Long-term debt issuance costs related to Publishing Spin-off (Note 2)	0		0	(10,179)
Payment of dividends	(90,296)		(719,919)	0
Settlements of contingent consideration, net	(3,636)		1,174	0
Payments for Repurchase of Common Stock	(232,065)		(339,942)	(60,211)
Cash and Restricted Cash Distributed in Spin-off	0		0	(86,530)
Change in excess tax benefits from stock-based awards	0		(868)	868
Tax withholdings related to net share settlements of share-based awards	(4,553)		(4,421)	(3,201)
Proceeds from stock option exercises	0		166	1,308
Contributions from noncontrolling interests	393		5,524	0
Intercompany dividends	0			0
Change in intercompany receivables and payables (1)	0	[1]	0	0
Net cash used in financing activities	(358,735)		(1,092,750)	(282,967)
Net Increase (Decrease) in Cash and Cash Equivalents	327,765		(1,192,539)	814,486
Cash and cash equivalents, beginning of year	262,644		1,455,183	640,697
Cash and cash equivalents, end of year	590,409		262,644	1,455,183
Cash and Cash Equivalents are Comprised of:
Cash and cash equivalents					$ 577,658	$ 247,820	$ 1,455,183	$ 640,697
Cash and cash equivalents classified as assets held for sale					12,751	14,824	0
Cash and cash equivalents, end of year	262,644		1,455,183	640,697	590,409	262,644	1,455,183	640,697
Non-cash settlement of intercompany balances	56,000
Consolidation, Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	0		0	(253,563)
Capital expenditures	0		0	0
Investments	0		0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of real estate and other assets	0		0	0
Transfers from (to) restricted cash	0		0	0
Increase (Decrease) in Restricted Cash, Related to Acquisitions				0
Distributions from equity investments			0	0
Intercompany Distribution from Affiliate	(3,326)			(21,437)
Proceeds from sales of investments			0	0
Net cash provided by (used in) investing activities	(3,326)		0	(21,437)
Long-term borrowings			0
Long-term borrowings related to Publishing Spin-off (Note 2)				0
Repayments of Long-term Debt	0		0	0
Repayment of Senior Toggle Notes				0
Payments of Debt Issuance Costs	0		0
Long-term debt issuance costs related to Publishing Spin-off (Note 2)				0
Payment of dividends	0		0
Settlements of contingent consideration, net	0		0
Payments for Repurchase of Common Stock	0		0	0
Cash and Restricted Cash Distributed in Spin-off				0
Change in excess tax benefits from stock-based awards			0	0
Tax withholdings related to net share settlements of share-based awards	0		0	0
Proceeds from stock option exercises			0	0
Contributions from noncontrolling interests	0		0
Intercompany dividends	3,326			275,000
Change in intercompany receivables and payables (1)	0	[1]	0	0
Net cash used in financing activities	3,326		0	275,000
Net Increase (Decrease) in Cash and Cash Equivalents	0		0	0
Cash and cash equivalents, beginning of year	0		0
Cash and cash equivalents, end of year	0		0	0
Cash and Cash Equivalents are Comprised of:
Cash and cash equivalents					0	0	0	0
Cash and cash equivalents classified as assets held for sale					0	0
Cash and cash equivalents, end of year	0		0	0	0	0	0
Parent Company | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	(4,987)		(47,422)	144,792
Capital expenditures	(10,199)		(20,775)	(33,485)
Investments	(850)		(15,000)	0
Acquisitions, net of cash acquired			0	(157,814)
Proceeds from sales of real estate and other assets	0		0	0
Transfers from (to) restricted cash	0		0	0
Increase (Decrease) in Restricted Cash, Related to Acquisitions				0
Distributions from equity investments			0	0
Intercompany Distribution from Affiliate	3,326			21,437
Proceeds from sales of investments			103	103
Net cash provided by (used in) investing activities	(7,723)		(35,672)	(169,759)
Long-term borrowings			1,100,000
Long-term borrowings related to Publishing Spin-off (Note 2)				0
Repayments of Long-term Debt	(23,792)		(1,110,159)	(293,865)
Repayment of Senior Toggle Notes				0
Payments of Debt Issuance Costs	(736)		(20,202)
Long-term debt issuance costs related to Publishing Spin-off (Note 2)				0
Payment of dividends	(90,296)		(719,919)
Settlements of contingent consideration, net	0		0
Payments for Repurchase of Common Stock	(232,065)		(339,942)	(60,211)
Cash and Restricted Cash Distributed in Spin-off				0
Change in excess tax benefits from stock-based awards			(868)	868
Tax withholdings related to net share settlements of share-based awards	(4,553)		(4,421)	(3,201)
Proceeds from stock option exercises			166	1,308
Contributions from noncontrolling interests	0		0
Intercompany dividends	0			0
Change in intercompany receivables and payables (1)	703,282	[1]	(19,441)	1,258,014
Net cash used in financing activities	351,840		(1,114,786)	902,913
Net Increase (Decrease) in Cash and Cash Equivalents	339,130		(1,197,880)	877,946
Cash and cash equivalents, beginning of year	235,508		1,433,388
Cash and cash equivalents, end of year	574,638		235,508	1,433,388
Cash and Cash Equivalents are Comprised of:
Cash and cash equivalents					574,638	235,508	1,433,388	555,442
Cash and cash equivalents classified as assets held for sale					0	0
Cash and cash equivalents, end of year	235,508		1,433,388	1,433,388	574,638	235,508	1,433,388
Guarantor Subsidiaries | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	395,861		190,327	399,228
Capital expenditures	(82,043)		(64,318)	(48,793)
Investments	(2,643)		(542)	(830)
Acquisitions, net of cash acquired			(5,109)	(68,537)
Proceeds from sales of real estate and other assets	507,011		4,930	49,870
Transfers from (to) restricted cash	297		1,112	(1,109)
Increase (Decrease) in Restricted Cash, Related to Acquisitions				201,922
Distributions from equity investments			10,328	180,521
Intercompany Distribution from Affiliate	0			0
Proceeds from sales of investments			36,579	659,292
Net cash provided by (used in) investing activities	422,622		(17,020)	972,336
Long-term borrowings			0
Long-term borrowings related to Publishing Spin-off (Note 2)				0
Repayments of Long-term Debt	0		(54)	(2,383)
Repayment of Senior Toggle Notes				(172,237)
Payments of Debt Issuance Costs	0		0
Long-term debt issuance costs related to Publishing Spin-off (Note 2)				0
Payment of dividends	0		0
Settlements of contingent consideration, net	(750)		4,088
Payments for Repurchase of Common Stock	0		0	0
Cash and Restricted Cash Distributed in Spin-off				0
Change in excess tax benefits from stock-based awards			0	0
Tax withholdings related to net share settlements of share-based awards	0		0	0
Proceeds from stock option exercises			0	0
Contributions from noncontrolling interests	0		0
Intercompany dividends	(3,326)			0
Change in intercompany receivables and payables (1)	(822,934)	[1]	(176,491)	(1,256,528)
Net cash used in financing activities	(827,010)		(172,457)	(1,431,148)
Net Increase (Decrease) in Cash and Cash Equivalents	(8,527)		850	(59,584)
Cash and cash equivalents, beginning of year	13,054		12,204
Cash and cash equivalents, end of year	4,527		13,054	12,204
Cash and Cash Equivalents are Comprised of:
Cash and cash equivalents					720	7,011	12,204	71,788
Cash and cash equivalents classified as assets held for sale					3,807	6,043
Cash and cash equivalents, end of year	13,054		12,204	12,204	4,527	13,054	12,204
Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	(106,711)		(116,961)	87,998
Capital expenditures	(7,417)		(3,991)	(7,160)
Investments	(2,500)		(7,500)	(1,500)
Acquisitions, net of cash acquired			(69,850)	(53,482)
Proceeds from sales of real estate and other assets	681		0	0
Transfers from (to) restricted cash	0		0	0
Increase (Decrease) in Restricted Cash, Related to Acquisitions				0
Distributions from equity investments			0	0
Intercompany Distribution from Affiliate	0			0
Proceeds from sales of investments			8,300	0
Net cash provided by (used in) investing activities	(9,236)		(73,041)	(62,142)
Long-term borrowings			0
Long-term borrowings related to Publishing Spin-off (Note 2)				346,500
Repayments of Long-term Debt	(4,050)		(4,049)	(3,037)
Repayment of Senior Toggle Notes				0
Payments of Debt Issuance Costs	0		0
Long-term debt issuance costs related to Publishing Spin-off (Note 2)				(10,179)
Payment of dividends	0		0
Settlements of contingent consideration, net	(2,886)		(2,914)
Payments for Repurchase of Common Stock	0		0	0
Cash and Restricted Cash Distributed in Spin-off				(86,530)
Change in excess tax benefits from stock-based awards			0	0
Tax withholdings related to net share settlements of share-based awards	0		0	0
Proceeds from stock option exercises			0	0
Contributions from noncontrolling interests	393		5,524
Intercompany dividends	0			(275,000)
Change in intercompany receivables and payables (1)	119,652	[1]	195,932	(1,486)
Net cash used in financing activities	113,109		194,493	(29,732)
Net Increase (Decrease) in Cash and Cash Equivalents	(2,838)		4,491	(3,876)
Cash and cash equivalents, beginning of year	14,082		9,591
Cash and cash equivalents, end of year	11,244		14,082	9,591
Cash and Cash Equivalents are Comprised of:
Cash and cash equivalents					2,300	5,301	9,591	$ 13,467
Cash and cash equivalents classified as assets held for sale					8,944	8,781
Cash and cash equivalents, end of year	$ 14,082		$ 9,591	$ 9,591	$ 11,244	$ 14,082	$ 9,591

[1] Excludes the impact of a $56 million non-cash settlement of intercompany balances upon dissolution of certain Guarantor subsidiaries.