Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The reconciliation of the Company's basic and diluted earnings per share is shown in the following tables:

	Three months ended June 30,
	2017				2016
(In millions, except per share data)(a)	Common Class A		Common Class C		Common Class A		Common Class C
Basic earnings per share attributable to NRG Yield, Inc. common stockholders
Net income attributable to NRG Yield, Inc.	$	10	$	18	$	11	$	21
Weighted average number of common shares outstanding — basic	35		63		35		63
Earnings per weighted average common share — basic	$	0.29	$	0.29	$	0.33	$	0.33
Diluted earnings per share attributable to NRG Yield, Inc. common stockholders
Net income attributable to NRG Yield, Inc.	$	13	$	21	$	14	$	23
Weighted average number of common shares outstanding — diluted	49		74		49		73
Earnings per weighted average common share — diluted	$	0.26	$	0.28	$	0.29	$	0.31

	Six months ended June 30,
	2017				2016
(In millions, except per share data)(a)	Common Class A		Common Class C		Common Class A		Common Class C
Basic and diluted earnings per share attributable to NRG Yield, Inc. common stockholders
Net income attributable to NRG Yield, Inc.	$	9	$	16	$	13	$	24
Weighted average number of common shares outstanding — basic and diluted	35		63		35		63
Earnings per weighted average common share — basic and diluted	$	0.26	$	0.26	$	0.38	$	0.38