Segment and Geographic Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Schedule of Geographic Distributions of Revenues, Equity in Earnings of Affiliates, Adjusted Segment EBITDA and Depreciation and Amortization

of other companies. The geographic distributions of our revenues, equity in earnings of affiliates, adjusted segment EBITDA and depreciation and amortization for the quarters and six months ended June 30, 2018 and 2017 are summarized in the following table (dollars in millions):

	Quarter						Six Months
	2018			2017			2018			2017
Revenues:
National Group	$	5,609		$	5,160		$	11,177		$	10,308
American Group		5,390			5,093			10,717			10,088
Corporate and other		530			480			1,058			960
	$	11,529		$	10,733		$	22,952		$	21,356
Equity in earnings of affiliates:
National Group	$	(2	)	$	(4	)	$	(4	)	$	(9	)
American Group		(10	)		(10	)		(19	)		(18	)
Corporate and other		5			1			7			4
	$	(7	)	$	(13	)	$	(16	)	$	(23	)
Adjusted segment EBITDA:
National Group	$	1,284		$	1,162		$	2,466		$	2,293
American Group		1,147			1,040			2,178			2,047
Corporate and other		(204	)		(112	)		(299	)		(245	)
	$	2,227		$	2,090		$	4,345		$	4,095
Depreciation and amortization:
National Group	$	232		$	217		$	457		$	431
American Group		255			238			507			476
Corporate and other		75			66			151			135
	$	562		$	521		$	1,115		$	1,042
Adjusted segment EBITDA	$	2,227		$	2,090		$	4,345		$	4,095
Depreciation and amortization		562			521			1,115			1,042
Interest expense		436			411			867			830
Gains on sales of facilities		(9	)		(2	)		(414	)		(3	)
Income before income taxes	$	1,238		$	1,160		$	2,777		$	2,226