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Consolidated Entities and Equity Method Investments (Tables)
3 Months Ended
Mar. 31, 2019
Regulated Operations [Abstract]  
Equity Method Investments
The carrying amounts of Southern Company Gas' equity method investments as of March 31, 2019 and December 31, 2018 and related income from those investments for the three-month periods ended March 31, 2019 and 2018 were as follows:
Investment Balance
March 31, 2019
December 31, 2018
 
(in millions)
SNG
$
1,262

$
1,261

Atlantic Coast Pipeline
96

83

PennEast Pipeline
75

71

Other
124

123

Total
$
1,557

$
1,538

Selected financial information of SNG for the three months ended March 31, 2019 and 2018 is as follows:
Income Statement Information
Three Months Ended
March 31, 2019
Three Months
Ended
March 31, 2018
 
(in millions)
Revenues
$
166

$
160

Operating income
106

99

Net income
84

78

Schedule of Other Nonoperating Income, by Component
Earnings from Equity Method Investments
Three Months Ended
March 31, 2019
Three Months
Ended
March 31, 2018
 
(in millions)
SNG
$
42

$
39

Atlantic Coast Pipeline
3

1

PennEast Pipeline
2

1

Other
1

1

Total
$
48

$
42