Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contracts with Customers [Abstract]

Revenue, Practical Expedient, Remaining Performance Obligation, Description

The Company has elected to apply the optional disclosure exemptions under ASC 606. Therefore, the amount above excludes contracts with an original length of one year or less, contracts for which we recognize revenue based on the amount we have the right to invoice for services performed, and variable consideration allocated entirely to a wholly unsatisfied performance obligation when the consideration relates specifically to our efforts to satisfy the performance obligation and depicts the amount to which we expect to be entitled. As such, consideration for energy is excluded from the amounts above as the variable consideration relates to the amount of energy delivered and reflects the value the Company expects to receive for the energy transferred. Estimates of revenue expected to be recognized in future periods also exclude unexercised customer options to purchase additional goods or services that do not represent material rights to the customer.

Disaggregation of Revenue [Table Text Block]

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



	Three Months Ended June 30, 2018
	US and Utilities SBU		South America SBU		MCAC SBU		Eurasia SBU		Corporate and Other/ 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, 2018
	US and Utilities SBU		South America SBU		MCAC SBU		Eurasia SBU		Corporate and Other/ 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