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Revenue (Tables)
 3 Months Ended
Mar. 31, 2018
Revenue From Contract With Customer [Abstract]  
Schedule of Revenues Disaggregated by Major Source for Reportable Segments

Revenues disaggregated by major source for our reportable segments are as follows:

 

 

 

Three Months Ended March 31, 2018

 

 

 

Networks

 

 

Renewables

 

 

Other (b)

 

 

Total

 

(Millions)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Regulated operations – electricity

 

$

926

 

 

$

—

 

 

$

—

 

 

$

926

 

Regulated operations – natural gas

 

 

572

 

 

 

—

 

 

 

—

 

 

 

572

 

Nonregulated operations – wind

 

 

—

 

 

 

168

 

 

 

—

 

 

 

168

 

Nonregulated operations – solar

 

 

—

 

 

 

2

 

 

 

—

 

 

 

2

 

Nonregulated operations – thermal

 

 

—

 

 

 

13

 

 

 

—

 

 

 

13

 

Nonregulated operations – gas storage

 

 

—

 

 

 

—

 

 

 

4

 

 

 

4

 

Other(a)

 

 

25

 

 

 

(23

)

 

 

15

 

 

 

17

 

    Revenue from contracts with customers

 

 

1,523

 

 

 

160

 

 

 

19

 

 

 

1,702

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Leasing revenue

 

 

9

 

 

 

81

 

 

 

—

 

 

 

90

 

Derivative revenue

 

 

—

 

 

 

43

 

 

 

10

 

 

 

53

 

Alternative revenue programs

 

 

19

 

 

 

—

 

 

 

—

 

 

 

19

 

Other revenue

 

 

1

 

 

 

—

 

 

 

—

 

 

 

1

 

    Total operating revenues

 

$

1,552

 

 

$

284

 

 

$

29

 

 

$

1,865

 

 

(a)

Primarily includes certain intra-month trading activities, billing, collection, and administrative charges, sundry billings, and other miscellaneous revenue.

 

(b)

Does not represent a segment. Includes Corporate, Gas and intersegment eliminations.
Schedule of Aggregate Transaction Price Allocated to Unsatisfied Performance Obligations and Expected Time to Recognize Revenue

As of March 31, 2018, accounts receivable balances related to contracts with customers were approximately $1,076 million, which are included in “Accounts receivable and unbilled revenues, net” on our condensed consolidated balance sheets.

As of March 31, 2018, for contracts with durations greater than one year (1) the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied (or partially unsatisfied), and (2) when we expect to recognize the revenue, were as follows:

 

 

 

 

As of March 31, 2018

 

2019

 

 

2020

 

 

2021

 

 

2022

 

 

2023

 

 

Thereafter

 

 

Total

 

(Millions)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Revenue expected to be recognized on multiyear capacity and carbon-free energy sale contracts

 

$

—

 

 

$

14

 

 

$

8

 

 

$

3

 

 

$

3

 

 

$

4

 

 

$

32

 

Revenue expected to be recognized on multiyear renewable energy credit sale contracts

 

 

25

 

 

 

15

 

 

 

7

 

 

 

4

 

 

 

1

 

 

 

1

 

 

 

53

 

    Total operating revenues

 

$

25

 

 

$

29

 

 

$

15

 

 

$

7

 

 

$

4

 

 

$

5

 

 

$

85