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Debt - Non-Recourse Debt Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | $ 1,710 | $ 307
Loss on extinguishment of debt | (6) | $ (1)
Nonrecourse Debt [Member] | JPMORGAN CHASE BANK N.A. LONDON BRANCH |  |
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | 500 |
AES Brasil [Domain] | Nonrecourse Debt [Member] |  |
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | 219 |
Repayments of Long-term Debt | (192) |
AES Gener | Nonrecourse Debt [Member] |  |
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | 175 |
Repayments of Long-term Debt | (95) |
Colon [Domain] | Nonrecourse Debt [Member] | JPMORGAN CHASE BANK N.A. LONDON BRANCH |  |
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | 50 |
AES Hispanola Holdings BV | Nonrecourse Debt [Member] |  |
Debt Instrument [Line Items] |  |
Repayments of Long-term Debt | 0 |
AES Hispanola Holdings BV | Nonrecourse Debt [Member] | JPMORGAN CHASE BANK N.A. LONDON BRANCH |  |
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | 450 |
Mercury Chile HoldCo LLC |  |
Debt Instrument [Line Items] |  |
Proceeds from Contributed Capital | 196 |
Mercury Chile HoldCo LLC | Bridge Loan |  |
Debt Instrument [Line Items] |  |
Repayments of Short-Term Debt | 350 |
Mercury Chile HoldCo LLC | Bridge Loan | JPMORGAN CHASE BANK N.A. LONDON BRANCH |  |
Debt Instrument [Line Items] |  |
Issued senior notes | 500 |
Mercury Chile HoldCo LLC | Nonrecourse Debt [Member] |  |
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | 710 |
Mercury Chile HoldCo LLC | Nonrecourse Debt [Member] | Bridge Loan |  |
Debt Instrument [Line Items] |  |
Proceeds From Issuance Of Nonrecourse Debt | 350 |
Mercury Chile HoldCo LLC | Senior Notes [Member] | 6.5% senior notes due 2027 |  |
Debt Instrument [Line Items] |  |
Issued senior notes | $ 360 |
Debt Instrument, Interest Rate, Stated Percentage | 6.50% |

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