Consolidated Entities and Equity Method Investments (Tables)

12 Months Ended

Dec. 31, 2018

Equity Method Investments and Joint Ventures [Abstract]

The following table presents the changes in Southern Power's redeemable noncontrolling interests for the years ended December 31, 2017 and 2016:



	2017			2016
	(in millions)
Beginning balance	$	164		$	43
Net income attributable to redeemable noncontrolling interests	2			4
Distributions to redeemable noncontrolling interests	(2		)	(1		)
Capital contributions from redeemable noncontrolling interests	2			118
Redemption of redeemable noncontrolling interests	(59		)	—
Reclassification to non-redeemable noncontrolling interests	(114		)	—
Change in fair value of redeemable noncontrolling interests	7			—
Ending balance	$	—		$	164

Condensed income statement

The following table presents the attribution of net income to Southern Power and the noncontrolling interests for the years ended December 31, 2017 and 2016:



	2017		2016
	(in millions)
Net income	$	1,117	$	374
Less: Net income attributable to noncontrolling interests	44		32
Less: Net income attributable to redeemable noncontrolling interests	2		4
Net income attributable to Southern Power	$	1,071	$	338

Equity Method Investments

The carrying amounts of Southern Company Gas' equity method investments at December 31, 2018 and 2017 and related income from those investments for the successor years ended December 31, 2018 and 2017, the successor period of July 1, 2016 through December 31, 2016, and the predecessor period of January 1, 2016 through June 30, 2016 were as follows:



Investment Balance	December 31, 2018		December 31, 2017
	(in millions)
SNG	$	1,261	$	1,262
PennEast Pipeline	71		57
Atlantic Coast Pipeline	83		41
Other	123		117
Total	$	1,538	$	1,477

Selected financial information of SNG at December 31, 2018 and 2017 and for the years ended December 31, 2018 and 2017 and for the period September 1, 2016 through December 31, 2016 is as follows:



	At December 31,
Balance Sheet Information	2018		2017
	(in millions)
Current assets	$	104	$	82
Property, plant, and equipment	2,606		2,439
Deferred charges and other assets	121		121
Total Assets	$	2,831	$	2,642

Current liabilities	$	103	$	110
Long-term debt	1,103		1,102
Other deferred charges and other liabilities	212		76
Total Liabilities	$	1,418	$	1,288

Total Stockholders' Equity	$	1,413	$	1,354
Total Liabilities and Stockholders' Equity	$	2,831	$	2,642



Income Statement Information	Year ended December 31, 2018		Year ended December 31, 2017		September 1, 2016 through December 31, 2016
	(in millions)
Revenues	$	604	$	544	$	230
Operating income	310		242		137
Net income	261		175		115

Schedule of Other Nonoperating Income, by Component



	Successor						Predecessor
Earnings from Equity Method Investments	Year ended December 31, 2018		Year ended December 31, 2017		July 1, 2016 through December 31, 2016		January 1, 2016 through June 30, 2016
	(in millions)						(in millions)
SNG	$	131	$	88	$	56	$	—
PennEast Pipeline	5		6		—		—
Atlantic Coast Pipeline	7		6		1		—
Other	5		6		3		2
Total	$	148	$	106	$	60	$	2