Business Acquisitions Business Acquisitions (Tables)

9 Months Ended

Sep. 30, 2018

November 2017 Drop Down Assets and August 2017 Drop Down Assets [Member]

Business Acquisition [Line Items]

Business Acquisition, Pro Forma Information [Table Text Block]

The following tables present a summary of the Company's historical information combining the financial information for the Buckthorn Solar Drop Down Asset and November 2017 Drop Down Assets transferred in connection with the acquisition:

	Three months ended September 30, 2017
	As Previously Reported (a)		Buckthorn Solar Drop Down Asset		November 2017 Drop Down Assets			As Currently Reported
(In millions)
Total operating revenues	$	265	$	—	$	4		$	269
Operating income (loss)	95		—		(11		)	84
Net income (loss)	41		1		(11		)	31
Less: Pre-acquisition net income (loss) of Drop Down Assets	1		1		(11		)	(9		)
Less: Income attributable to noncontrolling interests	11		—		—			11
Net income attributable to Clearway Energy, Inc.	29		—		—			29

	Nine months ended September 30, 2017
	As Previously Reported (a)		Buckthorn Solar Drop Down Asset			November 2017 Drop Down Assets			As Currently Reported
(In millions)
Total operating revenues	$	767	$	—		$	11		$	778
Operating income (loss)	271		—			(8		)	263
Net income (loss)	85		(2		)	(10		)	73
Less: Pre-acquisition net income (loss) of Drop Down Assets	18		(2		)	(10		)	6
Less: Income attributable to noncontrolling interests	13		—			—			13
Net income attributable to Clearway Energy, Inc.	54		—			—			54

^(a)As previously reported in the Company's Form 10-Q for the quarter ended September 30, 2017.

Buckthorn Solar Drop Down Asset [Member]

Business Acquisition [Line Items]

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

The following is a summary of net assets transferred in connection with the acquisition of the Buckthorn Solar Drop Down Asset as of March 31, 2018:

	(In millions)
Assets:
Current assets	$	20
Property, plant and equipment	212
Non-current assets	3
Total assets	235
Liabilities:
Debt (Current and non-current) (a)	176
Other current and non-current liabilities	15
Total liabilities	191
Less: noncontrolling interest	19
Net assets acquired	$	25

^(a)Net of $7 million of net debt issuance costs.