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Fair Value (Nonrecurring Measurements) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Mar. 31, 2022
Sep. 30, 2021
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges $ 230,000,000 $ 50,000,000 $ 482,000,000 $ 201,000,000 $ 872,000,000 $ 473,000,000 $ 763,000,000 $ 1,575,000,000 $ 864,000,000    
Goodwill impairment expense 777,000,000           777,000,000 0 0    
Other non-operating expense 175,000,000           175,000,000 0 $ 202,000,000    
AES PR                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                   $ 73,000,000  
sPower [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Equity Method Investment, Other than Temporary Impairment             175,000,000        
AES Jordan                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Selling Expense             5,000,000        
Estimate of Fair Value Measurement [Member] | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 1,195,000,000           1,195,000,000        
Equity Method Investments [Member] | sPower [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges             175,000,000        
Assets Carrying Amount Disclosure Nonrecurring 607,000,000           607,000,000        
Equity Method Investments [Member] | sPower [Member] | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 432,000,000           432,000,000        
Equity Method Investments [Member] | Estimate of Fair Value Measurement [Member] | sPower [Member] | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   0                  
Equity Method Investments [Member] | Estimate of Fair Value Measurement [Member] | sPower [Member] | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Equity Method Investments [Member] | Estimate of Fair Value Measurement [Member] | sPower [Member] | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 432,000,000           432,000,000        
Long Lived Assets Held And Used [Member] | Buffalo Gap [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               29,000,000      
Long Lived Assets Held And Used [Member] | Kilroot and Ballylumford [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               11,000,000      
Long Lived Assets Held And Used [Member] | buffalo gap II [Member] [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               73,000,000      
Long Lived Assets Held And Used [Member] | AES Hawaii                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               155,000,000      
Long Lived Assets Held And Used [Member] | Angamos [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               475,000,000      
Long Lived Assets Held And Used [Member] | buffalo gap III                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               91,000,000      
Long Lived Assets Held And Used [Member] | Ventanas 1 & 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               649,000,000      
Long Lived Assets Held And Used [Member] | AES PR                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges             468,000,000        
Long Lived Assets Held And Used [Member] | Mountain View Power Partners                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges             193,000,000 67,000,000      
Long Lived Assets Held And Used [Member] | Alto Maipo                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges               0      
Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | Buffalo Gap [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       29,000,000       29,000,000      
Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | buffalo gap II [Member] [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       73,000,000       73,000,000      
Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | AES Hawaii                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       241,000,000       241,000,000      
Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | Angamos [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring [1]       548,000,000       548,000,000      
Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | buffalo gap III                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       91,000,000       91,000,000      
Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | Ventanas 1 & 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       661,000,000       661,000,000      
Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | Mountain View Power Partners                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       78,000,000       78,000,000      
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Buffalo Gap [Member] | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     $ 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Buffalo Gap [Member] | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Buffalo Gap [Member] | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0     0     0 0      
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | buffalo gap II [Member] [Member] | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | buffalo gap II [Member] [Member] | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | buffalo gap II [Member] [Member] | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       0       0      
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES Hawaii | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES Hawaii | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES Hawaii | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       86,000,000       86,000,000      
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Angamos [Member] | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Angamos [Member] | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Angamos [Member] | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 311,000,000 86,000,000   73,000,000     311,000,000 73,000,000     306,000,000
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | buffalo gap III | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | buffalo gap III | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | buffalo gap III | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       0       0      
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 1 & 2 | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 1 & 2 | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                     0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 1 & 2 | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       12,000,000       12,000,000      
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Mountain View Power Partners                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring     504,000,000                
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Mountain View Power Partners | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring     0               0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Mountain View Power Partners | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring     0               $ 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Mountain View Power Partners | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring     $ 311,000,000 11,000,000       11,000,000      
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 3 & 4 | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   12,000,000                  
Long Lived Assets Held For Sale [Member] | AES Panama                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges             51,000,000        
Assets Carrying Amount Disclosure Nonrecurring   216,000,000                  
Long Lived Assets Held For Sale [Member] | Alto Maipo                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges             25,000,000        
Assets Carrying Amount Disclosure Nonrecurring 190,000,000           190,000,000        
Long Lived Assets Held For Sale [Member] | Estimate of Fair Value Measurement [Member] | AES Panama | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   0                  
Long Lived Assets Held For Sale [Member] | Estimate of Fair Value Measurement [Member] | AES Panama | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   170,000,000                  
Long Lived Assets Held For Sale [Member] | Estimate of Fair Value Measurement [Member] | AES Panama | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   0                  
Long Lived Assets Held For Sale [Member] | Estimate of Fair Value Measurement [Member] | Alto Maipo | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   0                  
Long Lived Assets Held For Sale [Member] | Estimate of Fair Value Measurement [Member] | Alto Maipo | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   170,000,000                  
Long Lived Assets Held For Sale [Member] | Estimate of Fair Value Measurement [Member] | Alto Maipo | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   0                  
Goodwill [Member] | AES Andes                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges             644,000,000        
Assets Carrying Amount Disclosure Nonrecurring 644,000,000           644,000,000        
Goodwill [Member] | AES El Salvador                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Other Asset Impairment Charges             133,000,000        
Assets Carrying Amount Disclosure Nonrecurring 133,000,000           133,000,000        
Goodwill [Member] | Estimate of Fair Value Measurement [Member] | AES Andes | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Goodwill [Member] | Estimate of Fair Value Measurement [Member] | AES Andes | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Goodwill [Member] | Estimate of Fair Value Measurement [Member] | AES Andes | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Goodwill [Member] | Estimate of Fair Value Measurement [Member] | AES El Salvador | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring   $ 0                  
Goodwill [Member] | Estimate of Fair Value Measurement [Member] | AES El Salvador | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Goodwill [Member] | Estimate of Fair Value Measurement [Member] | AES El Salvador | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | Kilroot and Ballylumford [Member]                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring [1]       17,000,000       17,000,000      
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | AES PR                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring [1]                   920,000,000  
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Reported Value Measurement [Member] | Alto Maipo                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       2,339,000,000       2,339,000,000      
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Kilroot and Ballylumford [Member] | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       0       0      
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Kilroot and Ballylumford [Member] | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 6,000,000           6,000,000        
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Kilroot and Ballylumford [Member] | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES PR | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                   0  
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES PR | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                   0  
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES PR | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring                   $ 452,000,000  
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Alto Maipo | Level 1                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring       $ 0       $ 0      
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Alto Maipo | Level 2                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring 0           0        
Fair Value, Nonrecurring [Member] | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Alto Maipo | Level 3                      
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]                      
Assets Carrying Amount Disclosure Nonrecurring $ 2,043,000,000           $ 2,043,000,000        
[1] Represents the carrying values at the dates of initial measurement, before fair value adjustment.
(2)See Note 22—Asset Impairment Expense for further information.
(3)See Note 24—Held-for-Sale and Dispositions for further information.
(4)The pre-tax loss recognized was calculated using the $170 million fair value of the Jordan disposal group less cost to sell of $5 million.
(5)See Note 9—Goodwill and Other Intangible Assets for further information.
(6)See Note 8—Investments in and Advances to Affiliates for further information.
(7)Fair value measurement performed for purposes of allocating $224 million of goodwill to the carrying amount of Alto Maipo in determining the loss on disposal. The goodwill allocation was determined based on the relative fair value of Alto Maipo, which was included in the AES Andes reporting unit. Note that the pre-tax loss column excludes the loss on disposal as this fair value measurement is only one component of such loss. See Note 24—Held-for-Sale and Dispositions for further information.