Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, gross	$ 18,218	$ 18,143	$ 18,360
Accumulated impairment losses	(13,354)	(13,354)	(13,354)
Goodwill, net of impairment	4,864	4,789	5,006
Dispositions	(2)	(217)
Acquisitions	77
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangibles assets, gross	335	372
Accumulated amortization	(148)	(179)
Finite-lived intangible assets, net	187	193
Indefinite-lived Intangible Assets [Line Items]
Total intangible assets, gross	2,781	2,818
Total intangible assets, net	2,633	2,639
Amortization expense	20	23	32
Future amortization expense [Abstract]
2017	19
2018	18
2019	18
2020	15
2021	13
Goodwill Gross [Member]
Goodwill [Roll Forward]
Dispositions	(2)	(217)
Acquisitions	77
Accumulated Impairment Losses [Member]
Goodwill [Roll Forward]
Dispositions	0	0
Acquisitions	0
FCC licenses [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	2,446	2,446
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangibles assets, gross	188	211
Accumulated amortization	(41)	(59)
Finite-lived intangible assets, net	147	152
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangibles assets, gross	147	161
Accumulated amortization	(107)	(120)
Finite-lived intangible assets, net	40	41
Operating segments [Member] | Entertainment Segment [Member]
Goodwill [Roll Forward]
Goodwill, net of impairment	3,006	2,956	3,173
Dispositions	(2)	(217)
Acquisitions	52
Operating segments [Member] | Entertainment Segment [Member] | Goodwill Gross [Member]
Goodwill [Roll Forward]
Goodwill, gross	9,300	9,250	9,467
Dispositions	(2)	(217)
Acquisitions	52
Operating segments [Member] | Entertainment Segment [Member] | Accumulated Impairment Losses [Member]
Goodwill [Roll Forward]
Accumulated impairment losses	(6,294)	(6,294)	(6,294)
Dispositions	0	0
Acquisitions	0
Operating segments [Member] | Cable Networks Segment [Member]
Goodwill [Roll Forward]
Goodwill, net of impairment	480	480	480
Dispositions	0	0
Acquisitions	0
Operating segments [Member] | Cable Networks Segment [Member] | Goodwill Gross [Member]
Goodwill [Roll Forward]
Goodwill, gross	480	480	480
Dispositions	0	0
Acquisitions	0
Operating segments [Member] | Cable Networks Segment [Member] | Accumulated Impairment Losses [Member]
Goodwill [Roll Forward]
Accumulated impairment losses	0	0	0
Dispositions	0	0
Acquisitions	0
Operating segments [Member] | Publishing Segment [Member]
Goodwill [Roll Forward]
Goodwill, net of impairment	431	406	406
Dispositions	0	0
Acquisitions	25
Operating segments [Member] | Publishing Segment [Member] | Goodwill Gross [Member]
Goodwill [Roll Forward]
Goodwill, gross	431	406	406
Dispositions	0	0
Acquisitions	25
Operating segments [Member] | Publishing Segment [Member] | Accumulated Impairment Losses [Member]
Goodwill [Roll Forward]
Accumulated impairment losses	0	0	0
Dispositions	0	0
Acquisitions	0
Operating segments [Member] | Local Media Segment [Member]
Goodwill [Roll Forward]
Goodwill, net of impairment	947	947	947
Dispositions	0	0
Acquisitions	0
Operating segments [Member] | Local Media Segment [Member] | Goodwill Gross [Member]
Goodwill [Roll Forward]
Goodwill, gross	8,007	8,007	8,007
Dispositions	0	0
Acquisitions	0
Operating segments [Member] | Local Media Segment [Member] | Accumulated Impairment Losses [Member]
Goodwill [Roll Forward]
Accumulated impairment losses	(7,060)	(7,060)	$ (7,060)
Dispositions	0	$ 0
Acquisitions	$ 0