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Investments In and Advances To Affiliates - Summary of Financial Information of Affiliates & Subsidiaries (Details) - USD ($)
$ / shares in Units, shares in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Nov. 01, 2021
Mar. 04, 2021
Investments in and Advances to Affiliates [Line Items]                            
Gain (Loss) on Disposition of Business                   $ (1,683,000,000) $ (95,000,000) $ 28,000,000    
Business Combination, Consideration Transferred                   $ 28,000,000        
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain     $ 178,000,000 $ 36,000,000       $ 214,000,000            
Shares Issued, Price Per Share                           $ 25.88
Qatar Investment Authority                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Purchase Price Agreement     $ 125,000,000                      
Qatar Investment Authority                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage Sold     13.60%         13.60%            
OPGC Affiliate [Member]                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Other than Temporary Impairment                     $ 43,000,000      
Fluence [Member]                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage 34.00%   43.20% 50.00%       43.20%   34.00% 50.00%      
Equity Method Investment, Realized Gain (Loss) on Disposal $ 325,000,000 $ 60,000,000                        
Shares, Issued                         35,650  
Shares Issued, Price Per Share                         $ 28  
Proceeds from divestiture of business $ 936,000,000                          
Fluence [Member] | Additional Decimal Displayed                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage 34.20%                 34.20%        
Guacolda Affiliate [Member]                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage     50.00%         50.00%            
Equity Method Investment, Realized Gain (Loss) on Disposal   $ 34,000,000                        
Equity Method Investment, Purchase Price Agreement       $ 34,000,000                    
Equity Method Investment Long Lived Asset Impairment         $ 127,000,000                  
Uplight                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage 29.40% 29.60% 32.30%         32.30%   29.40% 32.00%      
Equity Method Investment, Realized Gain (Loss) on Disposal   $ 25,000,000                        
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable $ 23,000,000 $ 37,000,000                        
sPower [Member]                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage 50.00%                 50.00% 50.00%      
Business Combination, Consideration Transferred       $ 102,000,000                    
Equity Method Investment, Realized Gain (Loss) on Disposal $ 35,000,000                          
Equity Method Investment, Ownership Acquired 25.00%                 25.00%        
Barry                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage [1] 100.00%                 100.00% 100.00%      
Other Long-term Debt $ 44,000,000                 $ 44,000,000 $ 46,000,000      
Colon [Domain]                            
Investments in and Advances to Affiliates [Line Items]                            
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain                   $ 6,000,000        
Grupo Energia Gas Panama                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage 49.00%                 49.00% 0.00%      
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable     $ 44,000,000                      
OPGC                            
Investments in and Advances to Affiliates [Line Items]                            
Equity Method Investment, Ownership Percentage             49.00%              
Equity Method Investment, Other than Temporary Impairment           $ 158,000,000 $ 43,000,000   $ 201,000,000          
Equity Method Investments, Fair Value Disclosure             152,000,000              
Fair Value, Inputs, Level 3 [Member] | Long Lived Assets Held For Sale [Member] | OPGC Affiliate [Member]                            
Investments in and Advances to Affiliates [Line Items]                            
Assets Carrying Amount Disclosure Nonrecurring             $ 152,000,000              
[1] Represents a VIE in which the Company holds a variable interest, but is not the primary beneficiary.