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Revenue Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]                      
Revenues $ 3,060 $ 3,627 $ 3,078 $ 2,852 $ 2,770 $ 3,036 $ 2,700 $ 2,635 $ 12,617 $ 11,141 $ 9,660
Loan receivable, net of allowance of $26 $ 1,051       $ 0       1,051 0  
Regulated Revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 3,507 2,831 2,626
Other non-606 revenue                 31 37 35
Revenues                 3,538 2,868 2,661
Non-regulated revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 8,639 7,586 6,418
Other non-606 revenue                 440 [1] 687 [1] 581
Revenues                 9,079 8,273 6,999
US and Utilities [Domain]                      
Disaggregation of Revenue [Line Items]                      
Revenues                 5,013 4,335 3,918
US and Utilities [Domain] | Regulated Revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 3,507 2,831 2,626
Other non-606 revenue                 31 37 35
Revenues                 3,538 2,868 2,661
US and Utilities [Domain] | Non-regulated revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 1,374 1,132 1,015
Other non-606 revenue                 101 [1] 335 [1] 242
Revenues                 1,475 1,467 1,257
South America                      
Disaggregation of Revenue [Line Items]                      
Revenues                 3,539 3,541 3,159
South America | Regulated Revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 0 0 0
Other non-606 revenue                 0 0 0
Revenues                 0 0 0
South America | Non-regulated revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 3,514 3,531 3,151
Other non-606 revenue                 25 [1] 10 [1] 8
Revenues                 3,539 3,541 3,159
MCAC [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenues                 2,868 2,157 1,766
MCAC [Member] | Regulated Revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 0 0 0
Other non-606 revenue                 0 0 0
Revenues                 0 0 0
MCAC [Member] | Non-regulated revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 2,770 2,057 1,668
Other non-606 revenue                 98 [1] 100 [1] 98
Revenues                 2,868 2,157 1,766
EURASIA [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenues                 1,217 1,123 828
EURASIA [Member] | Regulated Revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 0 0 0
Other non-606 revenue                 0 0 0
Revenues                 0 0 0
EURASIA [Member] | Non-regulated revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 1,002 881 594
Other non-606 revenue                 215 [1] 242 [1] 234
Revenues                 1,217 1,123 828
Corporate Other And Other Eliminations [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenues                 (20) (15) (11)
Corporate Other And Other Eliminations [Member] | Regulated Revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 0 0 0
Other non-606 revenue                 0 0 0
Revenues                 0 0 0
Corporate Other And Other Eliminations [Member] | Non-regulated revenue [Member]                      
Disaggregation of Revenue [Line Items]                      
Revenue from Contract with Customer, Including Assessed Tax                 (21) (15) (10)
Other non-606 revenue                 1 [1] 0 [1] (1)
Revenues                 $ (20) $ (15) $ (11)
[1] Other non-regulated revenue primarily includes lease and derivative revenue not accounted for under ASC 606.