Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2016

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Revenues From External Customers

	For the three months ended				For the nine months ended
	September 30,				September 30,
($ in millions)	2016		2015		2016		2015
Voice services	$	809	$	500	$	2,112	$	1,540
Data and Internet services		1,045		589		2,680		1,748
Video		392		71		879		214
Other		73		63		218		190
Customer revenue		2,319		1,223		5,889		3,692
Switched access and subsidy		205		201		598		471
Total revenue	$	2,524	$	1,424	$	6,487	$	4,163