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v3.20.4

Subsequent Events (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Feb. 23, 2021 | Feb. 05, 2021 | Dec. 29, 2020
Gener |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Preferred Stock, Shares Subscribed but Unissued |  |  |  |  |  |  | 1,980,000,000
Inversiones Cachagua SpA | Subsequent Event [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Own-share Lending Arrangement, Shares, Issued |  |  |  |  |  | 1,347,200,571 |
Preferred Stock, Value, Issued |  |  |  |  |  | $ 205 |
Guacolda Affiliate [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Income (Loss) from Subsidiaries, before Tax |  | $ (54) | $ (88) | $ 11 |  |  |
Guacolda Affiliate [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Proceeds from the sale of equity method investments | $ 34 |  |  |  |  |  |
Guacolda Affiliate [Member] | Subsequent Event [Member] | AES Gener |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  | 50.00% |  |
AES Gener | AES Gener |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  |  | 67.00%
AES Gener | Subsequent Event [Member] | AES Gener |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  | 67.20% |

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- Definition The number of shares issued in connection with an own-share lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 2A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=7656903&loc=SL6757479-112611 + Details
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- Definition The number of nonredeemable preferred stock (shares) (or preferred stock redeemable solely at the option of the issuer) allocated to investors to buy shares of a new issue of preferred stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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