Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended	21 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Sep. 30, 2015
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			$ 18
Restructuring charges	$ 0	$ 26	55	$ 26	$ 26
Restructuring settlements			(28)		(8)	$ (36)
Restructuring reserve, ending balance	45		45		18	45
Employee severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges			34		17
Restructuring settlements						(26)
Contract termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges			21		9
Restructuring settlements						(10)
Operating Segments [Member] | Entertainment Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			6
Restructuring charges			12		8
Restructuring settlements			(8)		(2)
Restructuring reserve, ending balance	10		10		6	10
Operating Segments [Member] | Publishing Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			0
Restructuring charges					1
Restructuring settlements					(1)
Restructuring reserve, ending balance					0
Operating Segments [Member] | Local Broadcasting Segment [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			10
Restructuring charges			43		14
Restructuring settlements			(19)		(4)
Restructuring reserve, ending balance	34		34		10	34
Corporate [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			2
Restructuring charges			0		3
Restructuring settlements			(1)		(1)
Restructuring reserve, ending balance	$ 1		$ 1		$ 2	$ 1