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v3.19.3.a.u2

Commitments and Contingencies (Required Capacity and/or Minimum Payments Under Contracts) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
FPL[Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Capacity payments and/or minimum payments - 2020 | $ 1,035 |
Capacity payments and/or minimum payments - 2021 | 1,005 |
Capacity payments and/or minimum payments - 2022 | 985 |
Capacity payments and/or minimum payments - 2023 | 975 |
Capacity payments and/or minimum payments - 2024 | 970 |
Capacity payments and/or minimum payments - Thereafter | 11,625 |
Related Party Transaction, Amounts of Transaction | 316 | $ 303
FPL[Member] | Natural Gas Including Transportation and Storage Contract Minimum Payments [Member] | Sabal Trail and Florida Southeast Connection [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Capacity payments and/or minimum payments - 2020 | 385 |
Capacity payments and/or minimum payments - 2021 | 415 |
Capacity payments and/or minimum payments - 2022 | 415 |
Capacity payments and/or minimum payments - 2023 | 410 |
Capacity payments and/or minimum payments - 2024 | 410 |
Capacity payments and/or minimum payments - Thereafter | 6,765 |
NEER [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Capacity payments and/or minimum payments - 2020 | 3,355 |
Capacity payments and/or minimum payments - 2021 | 395 |
Capacity payments and/or minimum payments - 2022 | 255 |
Capacity payments and/or minimum payments - 2023 | 130 |
Capacity payments and/or minimum payments - 2024 | 140 |
Capacity payments and/or minimum payments - Thereafter | 1,415 |
Commitment to invest | 110 |
Joint Obligations Next Year | 60 |
Joint Obligations Second Year | 20 |
Joint Obligations Third Year | 20 |
Joint Obligations Fourth Year | 20 |
Joint Obligations Fifth Year | 10 |
Joint Obligations After Fifth Year | 15 |
NEER [Member] | Mountain Valley Pipeline [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Capacity payments and/or minimum payments - 2021 | 70 |
Capacity payments and/or minimum payments - 2022 | 70 |
Capacity payments and/or minimum payments - 2023 | 70 |
Capacity payments and/or minimum payments - 2024 | 70 |
Capacity payments and/or minimum payments - Thereafter | 1,110 |
NEER [Member] | Contract Group 1 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Commitment amount included in capital expenditures | $ 3,800 |
Join Venture [Member] | NEER [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Ownership interest | 31.00% |
Consolidation, Eliminations [Member] | FPL[Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Related Party Transaction, Amounts of Transaction | $ 108 | $ 95

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