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v3.21.1

Derivative Instruments (Net Notional Volumes and Additional Disclosures) (Details) bbl in Millions, MWh in Millions, MMBTU in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 USD ($) MWh MMBTU bbl | Dec. 31, 2020 USD ($) MWh MMBTU bbl
Interest Rate Swap [Member] |  |
Derivative [Line Items] |  |
Notional amount | $ | $ 10,500 | $ 10,500
Currency Swap [Member] |  |
Derivative [Line Items] |  |
Notional amount | $ | $ 1,000 | $ 1,000
Short [Member] | Commodity contract - Power [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MWh) | MWh | 104 | 90
Short [Member] | Commodity contract - Natural gas [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MMBtu) | MMBTU | 811 | 607
Short [Member] | Commodity contract - Oil [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in barrels) | bbl | (23) | (6)
FPL [Member] | Short [Member] | Commodity contract - Oil [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in barrels) | bbl | 0 | 0
FPL [Member] | Long [Member] | Commodity contract - Power [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MWh) | MWh | 0 | 0
FPL [Member] | Long [Member] | Commodity contract - Natural gas [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MMBtu) | MMBTU | 241 | 87

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