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Long-term Debt - Short and Long-term Borrowings (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 15, 2023	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt		$ 7,235	$ 8,099
Less current maturities		(430)	(558)
Less net debt issuance costs		(57)	(65)
Add premiums		2	3
Total long-term debt		6,750	7,479
2028 Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 850	850
Interest rate %		4.75%
2031 Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 925	925
Interest rate %		3.75%
2032 Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 350	350
Interest rate %		3.75%
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt		$ 0	0
Basis spread on variable rate	0.10%	1.50%
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 103
Agua Caliente Solar LLC, due 2037
Debt Instrument [Line Items]
Long-term debt		$ 574	612
Agua Caliente Solar LLC, due 2037 | Minimum
Debt Instrument [Line Items]
Interest rate %		2.395%
Agua Caliente Solar LLC, due 2037 | Maximum
Debt Instrument [Line Items]
Interest rate %		3.633%
Agua Caliente Solar LLC, due 2037 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 14
Alta Wind Asset Management LLC, due 2031
Debt Instrument [Line Items]
Long-term debt		$ 10	11
Basis spread on variable rate		2.775%
Alta Wind Asset Management LLC, due 2031 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 0
Alta Wind I-V lease financing arrangements, due 2034 and 2035
Debt Instrument [Line Items]
Long-term debt		$ 609	660
Alta Wind I-V lease financing arrangements, due 2034 and 2035 | Minimum
Debt Instrument [Line Items]
Interest rate %		5.696%
Alta Wind I-V lease financing arrangements, due 2034 and 2035 | Maximum
Debt Instrument [Line Items]
Interest rate %		7.015%
Alta Wind I-V lease financing arrangements, due 2034 and 2035 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 67
Alta Wind Realty Investments LLC, due 2031
Debt Instrument [Line Items]
Long-term debt		$ 18	20
Interest rate %		7.00%
Alta Wind Realty Investments LLC, due 2031 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 0
Borrego, due 2038
Debt Instrument [Line Items]
Long-term debt		$ 45	48
Interest rate %		565.00%
Borrego, due 2038 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 4
Broken Bow, due 2031 (d)
Debt Instrument [Line Items]
Long-term debt		0	41
Broken Bow, due 2031 (d) | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		0
Buckthorn Solar, due 2025
Debt Instrument [Line Items]
Long-term debt		$ 112	116
Basis spread on variable rate		2.10%
Buckthorn Solar, due 2025 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 20
Capistrano Portfolio Holdco LLC, Due 2033
Debt Instrument [Line Items]
Long-term debt		$ 118	0
Basis spread on variable rate		1.625%
Capistrano Portfolio Holdco LLC, Due 2033 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 42
Carlsbad Energy Holdings LLC, due 2027
Debt Instrument [Line Items]
Long-term debt		$ 70	93
Basis spread on variable rate		1.90%
Carlsbad Energy Holdings LLC, due 2027 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 63
Carlsbad Energy Holdings LLC, due 2038
Debt Instrument [Line Items]
Long-term debt		$ 407	407
Interest rate %		4.12%
Carlsbad Energy Holdings LLC, due 2038 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 0
Carlsbad Holdco, LLC, due 2038
Debt Instrument [Line Items]
Long-term debt		$ 193	195
Interest rate %		4.21%
Carlsbad Holdco, LLC, due 2038 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 5
Cedar Creek, due 2029
Debt Instrument [Line Items]
Long-term debt		$ 108	0
Interest rate %		1.625%
Cedar Creek, due 2029 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 19
Cedro Hill, due 2029
Debt Instrument [Line Items]
Long-term debt		$ 99	165
Cedro Hill, due 2029 | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%
Cedro Hill, due 2029 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 3
Crofton Bluffs, due 2031 (d)
Debt Instrument [Line Items]
Long-term debt		0	27
Crofton Bluffs, due 2031 (d) | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		0
CVSR, due 2037
Debt Instrument [Line Items]
Long-term debt		$ 573	601
CVSR, due 2037 | Minimum
Debt Instrument [Line Items]
Interest rate %		2.339%
CVSR, due 2037 | Maximum
Debt Instrument [Line Items]
Interest rate %		3.775%
CVSR, due 2037 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 0
CVSR Holdco Notes, due 2037
Debt Instrument [Line Items]
Long-term debt		$ 143	152
Interest rate %		4.68%
CVSR Holdco Notes, due 2037 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 12
Daggett 2, due 2028
Debt Instrument [Line Items]
Long-term debt		$ 155	156
Basis spread on variable rate		1.762%
Daggett 2, due 2028 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 32
Daggett 3, due 2028
Debt Instrument [Line Items]
Long-term debt		$ 217	217
Basis spread on variable rate		1.762%
Daggett 3, due 2028 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 44
Dan’s Mountain, due 2025
Debt Instrument [Line Items]
Long-term debt		$ 143	0
Basis spread on variable rate		1.25%
Dan’s Mountain, due 2025 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 5
DG-CS Master Borrower LLC, due 2040
Debt Instrument [Line Items]
Long-term debt		$ 356	385
Interest rate %		3.51%
DG-CS Master Borrower LLC, due 2040 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 30
Mililani Class B Member Holdco LLC, due 2028
Debt Instrument [Line Items]
Long-term debt		$ 90	92
Basis spread on variable rate		1.60%
Mililani Class B Member Holdco LLC, due 2028 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 18
Natural Gas Holdco LC Facility, due 2027
Debt Instrument [Line Items]
Long-term debt		$ 0	0
Basis spread on variable rate		1.75%
Natural Gas Holdco LC Facility, due 2027 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 105
NIMH Solar, due 2031 and 2033
Debt Instrument [Line Items]
Long-term debt		$ 126	148
NIMH Solar, due 2031 and 2033 | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
NIMH Solar, due 2031 and 2033 | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		2.125%
NIMH Solar, due 2031 and 2033 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 11
Oahu Solar Holdings LLC, due 2026
Debt Instrument [Line Items]
Long-term debt		$ 78	81
Basis spread on variable rate		1.775%
Oahu Solar Holdings LLC, due 2026 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 10
Rosie Class B LLC, due 2029
Debt Instrument [Line Items]
Long-term debt		$ 191	347
Rosie Class B LLC, due 2029 | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%
Rosie Class B LLC, due 2029 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 28
Texas Solar Nova 1, due 2028
Debt Instrument [Line Items]
Long-term debt		0	102
Texas Solar Nova 1, due 2028 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		0
TSN1 Class B Member LLC, Due 2029
Debt Instrument [Line Items]
Long-term debt		$ 176	0
TSN1 Class B Member LLC, Due 2029 | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%
TSN1 Class B Member LLC, Due 2029 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 52
Utah Solar Holdings, due 2036
Debt Instrument [Line Items]
Long-term debt		$ 228	242
Interest rate %		3.59%
Utah Solar Holdings, due 2036 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 154
Viento Funding II, LLC, due 2029
Debt Instrument [Line Items]
Long-term debt		$ 160	175
Basis spread on variable rate		1.475%
Viento Funding II, LLC, due 2029 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		$ 29
Victory Pass and Arica, due 2024
Debt Instrument [Line Items]
Long-term debt		0	757
Victory Pass and Arica, due 2024 | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		0
Other
Debt Instrument [Line Items]
Long-term debt		111	124
Other | Letter of Credit
Debt Instrument [Line Items]
Letters of Credit Outstanding at December 31, 2024		49
Subtotal non-recourse facility-level debt
Debt Instrument [Line Items]
Long-term debt		$ 5,110	$ 5,974

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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