Acquisitions, Divestitures and Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2018

Six Power Plants Disposed [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The following table summarizes the consideration paid for Calpine Solutions as well as the preliminary determination of the identifiable assets acquired and liabilities assumed at the December 1, 2016 acquisition date (in millions):



Consideration	$	1,150

Identifiable assets acquired and liabilities assumed:
Assets:
Current assets	141
Margin deposits and other prepaid expense	518
Derivative assets, current⁽¹⁾	365
Property, plant and equipment, net	7
Intangible assets⁽²⁾	360
Goodwill	162
Long-term derivative assets⁽¹⁾	359
Total assets acquired	1,912
Liabilities:
Current liabilities	276
Derivative liabilities, current⁽¹⁾	270
Long-term derivative liabilities⁽¹⁾	216
Total liabilities assumed	762
Net assets acquired	$	1,150

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(1)	Consists of acquired customer and wholesale contracts which will be substantially amortized over 5 years.


(2)	Consists primarily of customer relationships that are being amortized over 14 years. See Note 3 for a further description of our intangible assets.

Business Acquisition, Pro Forma Information [Table Text Block]

The following table summarizes the unaudited pro forma operating revenues and net income attributable to Calpine for the periods presented as if Calpine Solutions was acquired on January 1, 2015. The unaudited pro forma information has been prepared by adding the preliminary, unaudited historical results of Calpine Solutions, as adjusted for amortization of intangible assets and acquired contracts (using the preliminary values assigned to the net assets acquired from Calpine Solutions disclosed above) and interest expense from our 2017 First Lien Term Loan which funded a portion of the purchase price, to our results for the periods indicated below (in millions).



	2016
	(Unaudited)
Operating revenues	$	8,324
Net income attributable to Calpine	$	105