Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2016

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Revenues From External Customers

	For the three months ended				For the six months ended
	June 30,				June 30,
($ in millions)	2016		2015		2016		2015
Voice services	$	836	$	515	$	1,303	$	1,040
Data and Internet services		1,048		584		1,635		1,159
Video		419		72		487		143
Other		78		65		145		127
Customer revenue		2,381		1,236		3,570		2,469
Switched access and subsidy		227		132		393		270
Total revenue	$	2,608	$	1,368	$	3,963	$	2,739