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Related Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Schedule of Investments [Line Items]          
Guarantor obligations, current carrying value $ 502   $ 502    
Debt instrument, fair value disclosure 51   51    
NextEra Energy Partners          
Schedule of Investments [Line Items]          
Guarantor obligations, current carrying value 2,513   2,513    
NEER [Member]          
Schedule of Investments [Line Items]          
Related party services 136 $ 161 424 $ 464  
Cash Sweep And Credit Support Agreement [Member] | NEER [Member]          
Schedule of Investments [Line Items]          
Fee income 45 $ 38 129 $ 108  
Due from related parties, current 81   81   $ 113
Due from related parties, noncurrent 38   38   40
Cash Sweep And Credit Support Agreement [Member] | NEER [Member] | NextEra Energy Partners          
Schedule of Investments [Line Items]          
Due to related parties $ 65   $ 65   $ 57