Segment Information (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Schedule of Segment Operating Information

The following table provides operating financial information for our two reportable segments:

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
(dollars in millions)	2018			2017		2018		2017
External Operating Revenues
Wireless
Service	$	15,949		$	15,823	$	47,062	$	47,158
Equipment	5,353			4,352		15,437		12,414
Other	1,588			1,328		4,571		3,916
Total Wireless	22,890			21,503		67,070		63,488
Wireline
Consumer Markets	3,138			3,203		9,418		9,588
Enterprise Solutions	2,170			2,262		6,620		6,881
Partner Solutions	914			997		2,840		2,993
Business Markets	839			903		2,562		2,700
Other	55			48		188		183
Total Wireline	7,116			7,413		21,628		22,345
Total reportable segments	$	30,006		$	28,916	$	88,698	$	85,833
Intersegment Revenues
Wireless	$	85		$	77	$	253	$	252
Wireline	253			249		758		718
Total reportable segments	$	338		$	326	$	1,011	$	970
Total Operating Revenues
Wireless	$	22,973		$	21,580	$	67,322	$	63,740
Wireline	7,371			7,662		22,387		23,063
Total reportable segments	$	30,344		$	29,242	$	89,709	$	86,803
Operating Income (Loss)
Wireless	$	8,511		$	7,603	$	24,834	$	22,089
Wireline	(50		)	65		—		318
Total reportable segments	$	8,461		$	7,668	$	24,834	$	22,407

Summary of Reconciliation of Segment Assets

The following table provides asset information for our reportable segments:

	At September 30,			At December 31,
(dollars in millions)	2018			2017
Assets
Wireless	$	260,056		$	235,873
Wireline	78,361			75,282
Total reportable segments	338,417			311,155
Corporate and other	241,555			239,040
Eliminations	(314,410		)	(293,052		)
Total consolidated - reported	$	265,562		$	257,143

Summary of Reconciliation of Segment Operating Revenues

A reconciliation of the reportable segment operating revenues to consolidated operating revenues is as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(dollars in millions)	2018			2017			2018			2017
Total reportable segment operating revenues	$	30,344		$	29,242		$	89,709		$	86,803
Corporate and other	2,655			2,796			8,046			6,034
Eliminations	(392		)	(375		)	(1,173		)	(1,126		)
Operating results from divested businesses	—			54			—			368
Total consolidated operating revenues	$	32,607		$	31,717		$	96,582		$	92,079

Summary of Reconciliation of Segment Operating Income

A reconciliation of the total of the reportable segments’ operating income to consolidated income before provision for income taxes is as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(dollars in millions)	2018			2017			2018			2017
Total reportable segment operating income	$	8,461		$	7,668		$	24,834		$	22,407
Corporate and other	39			(313		)	(842		)	(912		)
Severance charges (Note 8)	—			—			(339		)	(195		)
Other components of net periodic benefit credit (Note 8)	(688		)	(218		)	(1,197		)	(655		)
Gain on spectrum license transaction (Note 3)	—			—			—			126
Acquisition and integration related charges (Note 3)	(137		)	(166		)	(364		)	(730		)
Product realignment charges	—			—			(451		)	—
Net gain on sale of divested businesses	—			—			—			1,774
Operating results from divested businesses	—			17			—			149
Total consolidated operating income	7,675			6,988			21,641			21,964
Equity in losses of unconsolidated businesses	(3		)	(22		)	(250		)	(71		)
Other income (expense), net	214			(291		)	499			(719		)
Interest expense	(1,211		)	(1,164		)	(3,634		)	(3,514		)
Income Before Provision For Income Taxes	$	6,675		$	5,511		$	18,256		$	17,660