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Long-term Debt - Schedule of Debt (Details) - USD ($) $ in Millions |  |  | 6 Months Ended |
--- | --- | --- | --- | ---
May 03, 2022 | Mar. 16, 2022 | Jun. 30, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 7,127 | $ 7,778
Less current maturities |  |  | (457) | (772)
Less net debt issuance costs |  |  | (69) | (71)
Add premiums |  |  | 4 | 4
Total long-term debt |  |  | 6,605 | 6,939
2028 Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 850 | 850
Debt instrument, interest rate, stated percentage |  |  | 4.75% |
2031 Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 925 | 925
Debt instrument, interest rate, stated percentage |  |  | 3.75% |
2032 Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 350 | 350
Debt instrument, interest rate, stated percentage |  |  | 3.75% |
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 0 | 245
Repayments of debt | $ 305 |  |  |
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.75% |
Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 87 |
Bridge Loan, Due 2022 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 0 | 335
Repayments of debt | $ 335 |  |  |
Bridge Loan, Due 2022 | SOFR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.25% |
Bridge Loan, Due 2022 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  |  |
Subtotal project-level debt: |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | 5,002 | 5,073
Agua Caliente Solar LLC, due 2037 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 677 | 684
Agua Caliente Solar LLC, due 2037 | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 239.50% |
Agua Caliente Solar LLC, due 2037 | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 363.30% |
Agua Caliente Solar LLC, due 2037 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 45 |
Alta Wind Asset Management LLC, due 2031 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 12 | 13
Alta Wind Asset Management LLC, due 2031 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 2.625% |
Alta Wind Asset Management LLC, due 2031 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 0 |
Alta Wind I-V lease financing arrangements, due 2034 and 2035 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 727 | 756
Alta Wind I-V lease financing arrangements, due 2034 and 2035 | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 5.696% |
Alta Wind I-V lease financing arrangements, due 2034 and 2035 | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 7.015% |
Alta Wind I-V lease financing arrangements, due 2034 and 2035 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 22 |
Alta Wind Realty Investments LLC, due 2031 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 23 | 24
Debt instrument, interest rate, stated percentage |  |  | 7.00% |
Alta Wind Realty Investments LLC, due 2031 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 0 |
Borrego, due 2024 and 2038 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | 54 | 54
Borrego, due 2024 and 2038 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | 0 |
Buckthorn Solar, due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 122 | 123
Buckthorn Solar, due 2025 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.75% |
Buckthorn Solar, due 2025 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 23 |
Carlsbad Energy Holdings LLC, due 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 136 | 136
Carlsbad Energy Holdings LLC, due 2027 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.75% |
Carlsbad Energy Holdings LLC, due 2027 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 82 |
Carlsbad Energy Holdings LLC, due 2038 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 407 | 407
Debt instrument, interest rate, stated percentage |  |  | 4.12% |
Carlsbad Energy Holdings LLC, due 2038 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 0 |
Carlsbad Holdco, due 2038 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 203 | 205
Debt instrument, interest rate, stated percentage |  |  | 4.21% |
Carlsbad Holdco, due 2038 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 10 |
CVSR, due 2037 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 638 | 652
CVSR, due 2037 | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 2.339% |
CVSR, due 2037 | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 3.775% |
CVSR, due 2037 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 0 |
CVSR Holdco Notes, due 2037 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 160 | 169
Debt instrument, interest rate, stated percentage |  |  | 4.68% |
CVSR Holdco Notes, due 2037 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 13 |
DG-CS Master Borrower LLC, due 2040 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 434 | 441
Debt instrument, interest rate, stated percentage |  |  | 3.51% |
DG-CS Master Borrower LLC, due 2040 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 30 |
El Segundo Energy Center, due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 154 | 193
El Segundo Energy Center, due 2023 | Minimum | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.875% |
El Segundo Energy Center, due 2023 | Maximum | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 2.50% |
El Segundo Energy Center, due 2023 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 138 |
Kawailoa Solar Portfolio LLC, due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 78 | 78
Kawailoa Solar Portfolio LLC, due 2026 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.375% |
Kawailoa Solar Portfolio LLC, due 2026 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 15 |
Laredo Ridge, due 2028 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 0 | 72
Laredo Ridge, due 2028 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 2.125% |
Laredo Ridge, due 2028 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 0 |
Marsh Landing, due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 65 | 84
Marsh Landing, due 2023 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 2.375% |
Marsh Landing, due 2023 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 73 |
Mililani I, due 2022 and 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 98 | 0
Mililani I, due 2022 and 2024 | Minimum | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.00% |
Mililani I, due 2022 and 2024 | Maximum | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.25% |
Mililani I, due 2022 and 2024 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 2 |
NIMH Solar, due 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 171 | 176
NIMH Solar, due 2024 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 2.00% |
NIMH Solar, due 2024 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 16 |
Oahu Solar Holdings LLC, due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 85 | 86
Oahu Solar Holdings LLC, due 2026 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.375% |
Oahu Solar Holdings LLC, due 2026 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 11 |
Rosie Class B LLC, due 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 78 | 78
Rosie Class B LLC, due 2027 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.75% |
Rosie Class B LLC, due 2027 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 17 |
Tapestry Wind LLC, due 2031 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 0 | 85
Tapestry Wind LLC, due 2031 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.375% |
Tapestry Wind LLC, due 2031 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 0 |
Utah Solar Holdings, due 2036 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 267 | 273
Debt instrument, interest rate, stated percentage |  |  | 3.59% |
Utah Solar Holdings, due 2036 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 15 |
Viento Funding II, LLC Due 2023 and 2029 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  | $ 190 | $ 188 | 29
Viento Funding II, LLC Due 2023 and 2029 | SOFR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.10% |
Viento Funding II, LLC Due 2023 and 2029 | SOFR and Applicable Margin |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.475% |
Viento Funding II, LLC Due 2023 and 2029 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 26 |
Walnut Creek, due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 55 | 74
Walnut Creek, due 2023 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.75% |
Walnut Creek, due 2023 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 133 |
WCEP Holdings, LLC, due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | $ 28 | 30
WCEP Holdings, LLC, due 2023 | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 3.00% |
WCEP Holdings, LLC, due 2023 | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 0 |
Other |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt |  |  | 142 | $ 151
Other | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding, amount |  |  | $ 191 |
Laredo Ridge, Due 2028; Tapestry Wind, LLC, Due 2031; and Viento Funding II, LLC, Due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of debt |  | $ 186 |  |

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