Schedule I - Condensed Financial Information of Registrant - B/S (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Assets
Deferred income taxes	$ 0	$ 95
Total Assets	12,312	12,813
Other Liabilities
Long-term debt	6,870
Other non-current liabilities	201	173
Total Liabilities	8,279	9,513
Stockholders’ Equity
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued	0	0
Class A, Class B, Class C and Class D common stock, $0.01 par value; 3,000,000,000 shares authorized (Class A 500,000,000, Class B 500,000,000, Class C 1,000,000,000, Class D 1,000,000,000); 201,972,813 shares issued and outstanding (Class A 34,613,853, Class B 42,738,750, Class C 82,283,460 Class D 42,336,750) at December 31, 2022 and 201,856,166 shares issued and outstanding (Class A 34,599,645, Class B 42,738,750, Class C 81,779,021, Class D 42,738,750) at December 31, 2021	1	1
Additional paid-in capital	1,761	1,872
Retained earnings (accumulated deficit)	463	(33)
Accumulated other comprehensive income (loss)	9	(6)
Noncontrolling interest	1,792	1,466
Total Stockholders’ Equity	4,026	3,300	$ 2,715	$ 2,263
Total Liabilities and Stockholders’ Equity	12,312	12,813
Clearway Energy, Inc.
Current Assets
Accounts receivable — affiliates	2	3
Note receivable — Clearway Energy Operating LLC	2	1
Other Assets
Investment in consolidated subsidiaries	4,161	3,217
Deferred income taxes	0	95
Total Assets	4,165	3,316
Current Liabilities
Other current liabilities	19	0
Other Liabilities
Long-term debt	115	11
Other non-current liabilities	5	5
Total Liabilities	139	16
Stockholders’ Equity
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued	0	0
Class A, Class B, Class C and Class D common stock, $0.01 par value; 3,000,000,000 shares authorized (Class A 500,000,000, Class B 500,000,000, Class C 1,000,000,000, Class D 1,000,000,000); 201,972,813 shares issued and outstanding (Class A 34,613,853, Class B 42,738,750, Class C 82,283,460 Class D 42,336,750) at December 31, 2022 and 201,856,166 shares issued and outstanding (Class A 34,599,645, Class B 42,738,750, Class C 81,779,021, Class D 42,738,750) at December 31, 2021	1	1
Additional paid-in capital	1,761	1,872
Retained earnings (accumulated deficit)	463	(33)
Accumulated other comprehensive income (loss)	9	(6)
Noncontrolling interest	1,792	1,466
Total Stockholders’ Equity	4,026	3,300
Total Liabilities and Stockholders’ Equity	$ 4,165	$ 3,316