Inventories And Theatrical Film And Television Production Costs (Details) - USD ($) $ in Millions		Sep. 30, 2018	Dec. 31, 2017
Inventories:
Programming costs, less amortization	[1]	$ 4,224
Other inventory, primarily DVDs and Blu-ray Discs		177
Total inventories		4,401
Less: current portion of inventory		(2,310)
Total noncurrent inventories		2,091
Theatrical film production costs:
Released, less amortization	[2]	178
Completed and not released	[2]	821
In production	[2]	736
Development and pre-production	[2]	158
Television production costs:
Released, less amortization	[2]	582
Completed and not released	[2]	868
In production	[2]	1,762
Development and pre-production	[2]	25
Total theatrical film and television production costs		5,130
Total noncurrent inventories and theatrical film and television production costs		7,221	$ 0
Film and Television Libraries [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net		$ 9,184

[1] Includes the costs of certain programming rights, primarily sports, for which payments have been made prior to the related rights being received.

[2] Does not include $9,184 of acquired film and television library intangible assets as of September 30, 2018, which are included in "Other Intangible Assets - Net" on our consolidated balance sheet.