Segment Information (Tables)

6 Months Ended

Jun. 30, 2016

The following tables include the Company’s summarized segment information:

	As of or for the Three Months Ended June 30, 2016
	Regulated Businesses			Market-Based Businesses		Other			Consolidated
Operating revenues	$	716		$	115	$	(4	)	$	827
Depreciation and amortization		109			4		2			115
Total operating expenses, net		434			98		(4	)		528
Interest, net		(63	)		1		(19	)		(81	)
Income from continuing operations before income taxes		221			22		(18	)		225
Provision for income taxes		86			9		(7	)		88
Net income attributable to common stockholders		135			13		(11	)		137
Total assets		15,780			523		1,403			17,706

	As of or for the Three Months Ended June 30, 2015
	Regulated Businesses			Market-Based Businesses		Other			Consolidated
Operating revenues	$	687		$	100	$	(5	)	$	782
Depreciation and amortization		102			1		6			109
Total operating expenses, net		428			83		(7	)		504
Interest, net		(61	)		1		(16	)		(76	)
Income from continuing operations before income taxes		199			18		(13	)		204
Provision for income taxes		77			6		(2	)		81
Net income attributable to common stockholders		122			12		(11	)		123
Total assets (a)		14,778			329		1,489			16,596

	As of or for the Six Months Ended June 30, 2016
	Regulated Businesses			Market-Based Businesses		Other			Consolidated
Operating revenues	$	1,350		$	229	$	(9	)	$	1,570
Depreciation and amortization		217			7		7			231
Total operating expenses, net		864			202		(9	)		1,057
Interest, net		(127	)		1		(35	)		(161	)
Income from continuing operations before income taxes		364			32		(35	)		361
Provision for income taxes		142			13		(13	)		142
Net income attributable to common stockholders		222			19		(22	)		219
Total assets		15,780			523		1,403			17,706

	As of or for the Six Months Ended June 30, 2015
	Regulated Businesses			Market-Based Businesses		Other			Consolidated
Operating revenues	$	1,302		$	187	$	(9	)	$	1,480
Depreciation and amortization		202			2		12			216
Total operating expenses, net		852			159		(13	)		998
Interest, net		(122	)		1		(30	)		(151	)
Income from continuing operations before income taxes		333			30		(26	)		337
Provision for income taxes		130			11		(7	)		134
Net income attributable to common stockholders		203			19		(19	)		203
Total assets (a)		14,778			329		1,489			16,596

(a)	The information has been revised to reflect the retrospective application of ASU 2015-15 Presentation of Debt Issuance Costs and ASU 2015-17 Income Taxes, which were early adopted in 2015.