Revenue (Notes)

6 Months Ended

Jun. 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 June 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	$	706	$	—	$	—	$	—	$	—		$	706
Other regulated revenue	18		—		—		—		—			18
Total regulated revenue	724		—		—		—		—			724
Non-Regulated Revenue
Revenue from contracts with customers	180		764		455		201		(2		)	1,598
Other non-regulated revenue ⁽¹⁾	72		1		23		64		1			161
Total non-regulated revenue	252		765		478		265		(1		)	1,759
Total revenue	$	976	$	765	$	478	$	265	$	(1	)	$	2,483

	Three Months Ended June 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	$	706	$	—	$	—	$	—	$	—		$	706
Other regulated revenue	10		—		—		—		—			10
Total regulated revenue	716		—		—		—		—			716
Non-Regulated Revenue
Revenue from contracts with customers	180		845		384		218		—			1,627
Other non-regulated revenue ⁽¹⁾	99		1		22		74		(2		)	194
Total non-regulated revenue	279		846		406		292		(2		)	1,821
Total revenue	$	995	$	846	$	406	$	292	$	(2	)	$	2,537



	Six Months Ended June 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	$	1,484	$	—	$	—	$	—	$	—		$	1,484
Other regulated revenue	25		—		—		—		—			25
Total regulated revenue	1,509		—		—		—		—			1,509
Non-Regulated Revenue
Revenue from contracts with customers	353		1,607		884		468		(2		)	3,310
Other non-regulated revenue ⁽¹⁾	133		3		44		136		(2		)	314
Total non-regulated revenue	486		1,610		928		604		(4		)	3,624
Total revenue	$	1,995	$	1,610	$	928	$	604	$	(4	)	$	5,133

	Six Months Ended June 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	$	1,417	$	—	$	—	$	—	$	—		$	1,417
Other regulated revenue	21		—		—		—		—			21
Total regulated revenue	1,438		—		—		—		—			1,438
Non-Regulated Revenue
Revenue from contracts with customers	388		1,739		771		549		(9		)	3,438
Other non-regulated revenue ⁽¹⁾	196		2		43		162		(2		)	401
Total non-regulated revenue	584		1,741		814		711		(11		)	3,839
Total revenue	$	2,022	$	1,741	$	814	$	711	$	(11	)	$	5,277

_______________________________

⁽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 $127 million and $109 million as of June 30, 2019 and December 31, 2018, respectively.

During the six months ended June 30, 2019 and 2018, we recognized revenue of $7 million and $29 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 June 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 June 30, 2019, the aggregate amount of transaction price allocated to remaining performance obligations was $15 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, 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.