Revenue (Notes)

9 Months Ended

Sep. 30, 2019

Revenue from Contracts with Customers [Abstract]

Revenue from Contract with Customer [Text Block]

REVENUE

The following table presents our revenue from contracts with customers and other revenue for the periods indicated (in millions):



	Three Months Ended September 30, 2019
	US and Utilities SBU		South America SBU		MCAC SBU		Eurasia SBU		Corporate, Other and Eliminations			Total
Regulated Revenue
Revenue from contracts with customers	$	788	$	—	$	—	$	—	$	—		$	788
Other regulated revenue	11		—		—		—		—			11
Total regulated revenue	799		—		—		—		—			799
Non-Regulated Revenue
Revenue from contracts with customers	245		822		447		141		(1		)	1,654
Other non-regulated revenue ⁽¹⁾	86		6		23		56		1			172
Total non-regulated revenue	331		828		470		197		—			1,826
Total revenue	$	1,130	$	828	$	470	$	197	$	—		$	2,625

	Three Months Ended September 30, 2018
	US and Utilities SBU		South America SBU		MCAC SBU		Eurasia SBU		Corporate, Other and Eliminations			Total
Regulated Revenue
Revenue from contracts with customers	$	759	$	—	$	—	$	—	$	—		$	759
Other regulated revenue	18		—		—		—		—			18
Total regulated revenue	777		—		—		—		—			777
Non-Regulated Revenue
Revenue from contracts with customers	386		922		440		152		(2		)	1,898
Other non-regulated revenue ⁽¹⁾	67		1		22		72		—			162
Total non-regulated revenue	453		923		462		224		(2		)	2,060
Total revenue	$	1,230	$	923	$	462	$	224	$	(2	)	$	2,837



	Nine Months Ended September 30, 2019
	US and Utilities SBU		South America SBU		MCAC SBU		Eurasia SBU		Corporate, Other and Eliminations			Total
Regulated Revenue
Revenue from contracts with customers	$	2,272	$	—	$	—	$	—	$	—		$	2,272
Other regulated revenue	36		—		—		—		—			36
Total regulated revenue	2,308		—		—		—		—			2,308
Non-Regulated Revenue
Revenue from contracts with customers	598		2,429		1,331		609		(3		)	4,964
Other non-regulated revenue ⁽¹⁾	219		9		67		192		(1		)	486
Total non-regulated revenue	817		2,438		1,398		801		(4		)	5,450
Total revenue	$	3,125	$	2,438	$	1,398	$	801	$	(4	)	$	7,758

	Nine Months Ended September 30, 2018
	US and Utilities SBU		South America SBU		MCAC SBU		Eurasia SBU		Corporate, Other and Eliminations			Total
Regulated Revenue
Revenue from contracts with customers	$	2,176	$	—	$	—	$	—	$	—		$	2,176
Other regulated revenue	39		—		—		—		—			39
Total regulated revenue	2,215		—		—		—		—			2,215
Non-Regulated Revenue
Revenue from contracts with customers	774		2,661		1,211		701		(11		)	5,336
Other non-regulated revenue ⁽¹⁾	263		3		65		234		(2		)	563
Total non-regulated revenue	1,037		2,664		1,276		935		(13		)	5,899
Total revenue	$	3,252	$	2,664	$	1,276	$	935	$	(13	)	$	8,114

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⁽¹⁾ Other non-regulated revenue primarily includes lease and derivative revenue not accounted for under ASC 606.

Contract Balances — The timing of revenue recognition, billings, and cash collections results in accounts receivable and contract liabilities. The contract liabilities from contracts with customers were $116 million and $109 million as of September 30, 2019 and December 31, 2018, respectively.

During the nine months ended September 30, 2019 and 2018, we recognized revenue of $9 million and $33 million, respectively, that was included in the corresponding contract liability balance at the beginning of the periods.

A significant financing arrangement exists for our Mong Duong plant in Vietnam. The plant was constructed under a build, operate, and transfer contract and will be transferred to the Vietnamese government after the completion of a 25 year PPA. The performance obligation to construct the facility was substantially completed in 2015. Approximately $1.4 billion of contract consideration related to the construction, but not yet collected through the 25 year PPA, was reflected as a loan receivable as of September 30, 2019.

Remaining Performance Obligations — The transaction price allocated to remaining performance obligations represents future consideration for unsatisfied (or partially unsatisfied) performance obligations at the end of the reporting period. As of September 30, 2019, the aggregate amount of transaction price allocated to remaining performance obligations was $13 million, primarily consisting of fixed consideration for the sale of renewable energy credits (RECs) in long-term contracts in the U.S. We expect to recognize revenue on approximately one-fifth of the remaining performance obligations in 2019 and 2020, with the remainder recognized thereafter.

For further information on our accounting policies concerning contract balances and remaining performance obligations, see Note 18—Revenue in Item 8.—Financial Statements and Supplementary Data of our 2018 Form 10-K.