XML 90 R55.htm IDEA: XBRL DOCUMENT v3.22.0.1
Non-Derivative Fair Value Measurements (Fair Value of Instruments Recorded at Other than Fair Value) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure $ 906 $ 919
Other investments 102 29
Long-term debt, including current portion 52,745 46,082
Estimated Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure 907 920
Other investments 102 29
Long-term debt, including current portion 57,290 51,525
FPL [Member] | Carrying Amount    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure 672 718
Long-term debt, including current portion 18,510 17,236
FPL [Member] | Estimated Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Special Use Funds Fair Value Disclosure 672 719
Long-term debt, including current portion $ 21,379 $ 21,178