Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

Revenue Categories
The following tables set forth reported revenue by category:
For the three months ended March 31, 2019
	Service Revenues
		Wireless		Advanced Data		Legacy Voice & Data		Subscription		Content		Advertising		Other		Equipment		Total
Communications
Mobility	$	13,725	$	-	$	-	$	-	$	-	$	67	$	-	$	3,775	$	17,567
Entertainment Group		-		2,070		683		7,724		-		350		501		-		11,328
Business Wireline		-		3,186		2,404		-		-		-		749		159		6,498
WarnerMedia
Turner		-		-		-		1,965		135		1,261		82		-		3,443
Home Box Office		-		-		-		1,334		173		-		3		-		1,510
Warner Bros.		-		-		-		21		3,332		10		155		-		3,518
Eliminations and Other		-		-		-		49		(152)		8		3		-		(92)
Latin America
Vrio		-		-		-		1,067		-		-		-		-		1,067
Mexico		442		-		-		-		-		-		-		209		651
Xandr		-		-		-		-		-		426		-		-		426
Corporate and Other		-		-		-		-		-		-		167		-		167
Eliminations and consolidations		-		-		-		-		(837)		(350)		(69)		-		(1,256)
Total Operating Revenues	$	14,167	$	5,256	$	3,087	$	12,160	$	2,651	$	1,772	$	1,591	$	4,143	$	44,827

For the three months ended March 31, 2018
	Service Revenues
		Wireless		Advanced Data		Legacy Voice & Data		Subscription		Content		Advertising		Other		Equipment		Total
Communications
Mobility	$	13,362	$	-	$	-	$	-	$	-	$	41	$	-	$	3,952	$	17,355
Entertainment Group		-		1,878		806		7,891		-		334		519		3		11,431
Business Wireline		-		3,043		2,865		-		-		-		669		170		6,747
WarnerMedia
Turner		-		-		-		98		-		14		-		-		112
Home Box Office		-		-		-		-		-		-		-		-		-
Warner Bros.		-		-		-		-		-		-		-		-		-
Eliminations and Other		-		-		-		-		-		-		-		-		-
Latin America
Vrio		-		-		-		1,354		-		-		-		-		1,354
Mexico		404		-		-		-		-		-		-		267		671
Xandr		-		-		-		-		-		337		-		-		337
Corporate and Other		-		-		-		-		-		-		333		-		333
Eliminations and consolidations		-		-		-		-		-		(334)		32		-		(302)
Total Operating Revenues	$	13,766	$	4,921	$	3,671	$	9,343	$	-	$	392	$	1,553	$	4,392	$	38,038

Contract with Customer, Asset and Liability [Table Text Block]

		March 31,		December 31,
		2019		2018
Contract asset	$	2,198	$	1,896
Contract liability		6,899		6,856