

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Segment Adjusted EBITDA:
Intrastate transportation and storage	$	290		$	208		$	542		$	400
Interstate transportation and storage	460			375			916			741
Midstream	412			414			794			791
NGL and refined products transportation and services	644			461			1,256			912
Crude oil transportation and services	751			548			1,557			1,012
Investment in Sunoco LP	152			140			305			249
Investment in USAC	105			95			206			95
All other	10			21			45			64
Total	2,824			2,262			5,621			4,264
Depreciation, depletion and amortization	(785		)	(694		)	(1,559		)	(1,359		)
Interest expense, net of interest capitalized	(578		)	(510		)	(1,168		)	(976		)
Impairment losses	—			—			(50		)	—
Gains (losses) on interest rate derivatives	(122		)	20			(196		)	72
Non-cash compensation expense	(29		)	(32		)	(58		)	(55		)
Unrealized gains (losses) on commodity risk management activities	(23		)	(265		)	26			(352		)
Losses on extinguishments of debt	—			—			(18		)	(106		)
Inventory valuation adjustments	4			32			97			57
Adjusted EBITDA related to unconsolidated affiliates	(163		)	(168		)	(309		)	(324		)
Equity in earnings of unconsolidated affiliates	77			92			142			171
Adjusted EBITDA related to discontinued operations	—			5			—			25
Other, net	37			(15		)	20			26
Income from continuing operations before income tax expense	1,242			727			2,548			1,443
Income tax expense from continuing operations	(34		)	(68		)	(160		)	(58		)
Income from continuing operations	1,208			659			2,388			1,385
Loss from discontinued operations, net of income taxes	—			(26		)	—			(263		)
Net income	$	1,208		$	633		$	2,388		$	1,122



	June 30, 2019		December 31, 2018
Assets:
Intrastate transportation and storage	$	6,159	$	6,365
Interstate transportation and storage	15,606		15,081
Midstream	19,866		19,745
NGL and refined products transportation and services	19,409		18,267
Crude oil transportation and services	18,790		18,022
Investment in Sunoco LP	5,470		4,879
Investment in USAC	3,760		3,775
All other and eliminations	1,752		2,112
Total assets	$	90,812	$	88,246

The following tables present financial information by segment:



	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Revenues:
Intrastate transportation and storage:
Revenues from external customers	$	671		$	761		$	1,440		$	1,578
Intersegment revenues	94			52			181			110
	765			813			1,621			1,688
Interstate transportation and storage:
Revenues from external customers	487			373			979			735
Intersegment revenues	6			5			12			8
	493			378			991			743
Midstream:
Revenues from external customers	337			594			1,000			1,034
Intersegment revenues	861			1,280			1,916			2,454
	1,198			1,874			2,916			3,488
NGL and refined products transportation and services:
Revenues from external customers	2,356			2,359			5,069			4,622
Intersegment revenues	256			209			574			492
	2,612			2,568			5,643			5,114
Crude oil transportation and services:
Revenues from external customers	5,012			4,789			9,179			8,520
Intersegment revenues	34			14			53			28
	5,046			4,803			9,232			8,548
Investment in Sunoco LP:
Revenues from external customers	4,474			4,606			8,166			8,354
Intersegment revenues	1			1			1			2
	4,475			4,607			8,167			8,356
Investment in USAC:
Revenues from external customers	169			165			336			165
Intersegment revenues	5			2			9			2
	174			167			345			167
All other:
Revenues from external customers	371			471			829			992
Intersegment revenues	20			31			59			81
	391			502			888			1,073
Eliminations	(1,277		)	(1,594		)	(2,805		)	(3,177		)
Total revenues	$	13,877		$	14,118		$	26,998		$	26,000