Goodwill, Indefinite-Lived Intangible Assets, and Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill	$ 4,499,927	$ 3,790,472	$ 2,846,869
Intangible Assets Gross	8,005,247	5,468,881
Intangible Assets Accumulated Amortization	(265,727)	(201,178)
Intangible Assets Net	7,739,520	5,267,703
Customer Relationships
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-Lived Intangible Assets, Gross	1,078,738	290,845
Finite-Lived Intangible Assets, Accumulated Amortization	(212,438)	(177,515)
Finite-Lived Intangible Assets, Net	866,300	113,330
Other Intangible Assets
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-Lived Intangible Assets, Gross	282,856	213,790
Finite-Lived Intangible Assets, Accumulated Amortization	(53,289)	(23,663)
Finite-Lived Intangible Assets, Net	229,567	190,127
Television station FCC licenses
Goodwill and Intangible Assets Disclosure [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	1,191,950	1,091,204
Intangible Assets Accumulated Amortization	0	0
Intangible Assets Net	1,191,950	1,091,204
Mastheads and trade names
Goodwill and Intangible Assets Disclosure [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	951,776	82,570
Intangible Assets Accumulated Amortization	0	0
Intangible Assets Net	951,776	82,570
Goodwill
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill	4,499,927	3,790,472
Intangible Assets Accumulated Amortization	0	0
Intangible Assets Net	$ 4,499,927	$ 3,790,472