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Revenue Recognition
 3 Months Ended
Mar. 31, 2021
Revenue from Contract with Customer [Abstract]  
Revenue Recognition Revenue Recognition
Performance Obligations
As of March 31, 2021, estimated future fixed fee performance obligations are $544 million for the remaining nine months of fiscal year 2021, and $299 million, $51 million, $37 million and $20 million for the fiscal years 2022, 2023, 2024 and 2025, respectively. These performance obligations are for cleared auction MWs in the PJM, ISO-NE, NYISO and MISO capacity auctions and are subject to penalties for non-performance.
Disaggregated Revenues
The following tables represent the Company’s disaggregation of revenue from contracts with customers for the three months ended March 31, 2021 and 2020:
Three months ended March 31, 2021
(In millions)
TexasEastWest/Services/OtherCorporate/EliminationsTotal
Retail revenue:
Home(a)
$1,542 $702 $474 $— $2,718 
Business572 2,841 31 — 3,444 
Total retail revenue2,114 3,543 505 — 6,162 
Energy revenue(c)
285 126 70 1 482 
Capacity revenue(c)
— 141 14 — 155 
Mark-to-market for economic hedging activities(d)
(1)(4)(28)1 (32)
Other revenue(b)(c)
1,304 19 4 (3)1,324 
Total operating revenue3,702 3,825 565 (1)8,091 
Less: Lease revenue— — 2 — 2 
Less: Realized and unrealized ASC 815 revenue
93 99 (34)2 160 
Total revenue from contracts with customers$3,609 $3,726 $597 $(3)$7,929 
(a) Home includes Services
(b) Other Revenue in Texas includes ancillary revenues of $1.2 billion driven by high pricing during Winter Storm Uri
(c) The following table represents the realized revenues related to derivative instruments that are accounted for under ASC 815 and included in the amounts above:
(In millions)
TexasEastWest/Services/OtherCorporate/EliminationsTotal
Energy revenue$— $60 $(4)$2 $58 
Capacity revenue— 37 — — 37 
Other revenue94 6 (2)(1)97 
(d) Revenue relates entirely to unrealized gains and losses on derivative instruments accounted for under ASC 815
Three months ended March 31, 2020
(In millions)
TexasEastWest/Services/OtherCorporate/EliminationsTotal
Retail revenue:
Home(a)
$1,032 $329 $18 $(1)$1,378 
Business260 23 — — 283 
Total retail revenue1,292 352 18 (1)1,661 
Energy revenue(b)
5 45 75 (1)124 
Capacity revenue(b)
— 134 15 — 149 
Mark-to-market for economic hedging activities(c)
— (20)15 1 (4)
Other revenue(b)
61 10 20 (2)89 
Total operating revenue1,358 521 143 (3)2,019 
Less: Lease revenue— — 5 — 5 
Less: Realized and unrealized ASC 815 revenue
7 39 44 (1)89 
Total revenue from contracts with customers$1,351 $482 $94 $(2)$1,925 
(a) Home includes Services
(b) The following table represents the realized revenues related to derivative instruments that are accounted for under ASC 815 and included in the amounts above:
(In millions)
TexasEastWest/Services/OtherCorporate/EliminationsTotal
Energy revenue$— $35 $19 $(1)$53 
Capacity revenue— 24 — — 24 
Other revenue7 — 10 (1)16 
(c) Revenue relates entirely to unrealized gains and losses on derivative instruments accounted for under ASC 815

Contract Balances
The following table reflects the contract assets and liabilities included in the Company’s balance sheet as of March 31, 2021 and December 31, 2020:
(In millions)
March 31, 2021December 31, 2020
Deferred customer acquisition costs$116 $113 
Accounts receivable, net - Contracts with customers2,920 866 
Accounts receivable, net - Derivative instruments113 33 
Accounts receivable, net - Affiliate4 5 
Total accounts receivable, net $3,037 $904 
Unbilled revenues (included within Accounts receivable, net - Contracts with customers)$1,234 $393 
Deferred revenues(a)
258 60 
(a) Deferred revenues from contracts with customers for the three months ended March 31, 2021 and the year ended December 31, 2020 were approximately $232 million and $31 million, respectively
The revenue recognized from contracts with customers during the three months ended March 31, 2021 and 2020 relating to the deferred revenue balance at the beginning of each period was $23 million and $13 million, respectively. The change in deferred revenue balances during the three months ended March 31, 2021 and 2020 was primarily due to the timing difference of when consideration was received and when the performance obligation was transferred.