Segment Information (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Schedule of Segment Information

Segment information for the three months ended September 30, 2017, consisted of:

Three Months Ended September 30, 2017	Networks			Renewables			Gas			Other (a)			AVANGRID Consolidated
(Millions)
Revenue - external	$	1,126		$	241		$	(24	)	$	(2	)	$	1,341
Revenue - intersegment		(1	)		—			14			(13	)		—
Depreciation and amortization		119			80			6			—			205
Operating income (loss)		207			2			(27	)		7			189
Adjusted EBITDA		326			83			(22	)		7			394
Earnings (losses) from equity method investments		5			(5	)		—			—			—

(a)Does not represent a segment. It mainly includes Corporate and intersegment eliminations.

Segment information for the three months ended September 30, 2016, consisted of:

Three Months Ended September 30, 2016	Networks			Renewables			Gas			Other (a)			AVANGRID Consolidated
(Millions)
Revenue - external	$	1,157		$	270		$	(8	)	$	(1	)	$	1,418
Revenue - intersegment		(1	)		5			15			(19	)		—
Depreciation and amortization		118			79			6			—			203
Operating income (loss)		178			37			(12	)		14			217
Adjusted EBITDA		296			116			(6	)		14			420
Earnings (losses) from equity method investments		4			(2	)		—			—			2

(a)Does not represent a segment. It mainly includes Corporate and intersegment eliminations.

Segment information as of and for the nine months ended September 30, 2017, consisted of:

Nine Months Ended September 30, 2017	Networks		Renewables			Gas			Other (a)			AVANGRID Consolidated
(Millions)
Revenue - external	$	3,651	$	789		$	(9	)	$	(1	)	$	4,430
Revenue - intersegment		—		4			26			(30	)		—
Depreciation and amortization		352		238			18			—			608
Operating income (loss)		739		108			(37	)		—			810
Adjusted EBITDA		1,091		346			(19	)		—			1,418
Earnings (losses) from equity method investments		12		(9	)		—			—			3
Capital expenditures		842		855			6			1			1,704
As of September 30, 2017
Property, plant and equipment		13,529		8,661			491			1			22,682
Equity method investments		147		259			—			—			406
Total assets	$	21,033	$	10,422		$	992		$	(526	)	$	31,921

(a) Does not represent a segment. It mainly includes Corporate and intersegment eliminations.

Segment information for the nine months ended September 30, 2016, consisted of:

Nine Months Ended September 30, 2016	Networks		Renewables			Gas			Other (a)			AVANGRID Consolidated
(Millions)
Revenue - external	$	3,758	$	788		$	(19	)	$	—		$	4,527
Revenue - intersegment		1		9			27			(37	)		—
Depreciation and amortization		362		240			19			—			621
Operating income (loss)		789		144			(50	)		5			888
Adjusted EBITDA		1,151		384			(31	)		5			1,509
Earnings (losses) from equity method investments		10		(6	)		—			—			4
Capital expenditures		749		284			3			—			1,036
As of December 31, 2016
Property, plant and equipment		13,032		8,015			501			—			21,548
Equity method investments		151		236			—			—			387
Total assets	$	20,753	$	9,884		$	1,124		$	(452	)	$	31,309

(a) Does not represent a segment. It mainly includes Corporate and intersegment eliminations.

Schedule of Reconciliation of Consolidated EBITDA to Consolidated Net Income

Reconciliation of consolidated Adjusted EBITDA to the AVANGRID consolidated Net Income for the three and nine months ended September 30, 2017 and 2016, respectively, is as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
(Millions)
Consolidated Adjusted EBITDA	$	394	$	420	$	1,418	$	1,509
Less:
Depreciation and amortization		205		203		608		621
Interest expense, net of capitalization		71		60		210		212
Income tax expense		32		53		179		329
Add:
Other income		14		3		35		72
Earnings from equity method investments		—		2		3		4
Consolidated Net Income	$	100	$	109	$	459	$	423