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v3.19.3.a.u2

Acquisitions (Details) $ in Millions |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Feb. 11, 2020 USD ($) | Jul. 16, 2019 USD ($) mi | Jan. 01, 2019 USD ($) county customer mi MW | Dec. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) customer mi MW | Dec. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | $ 891 | $ 891 | $ 4,204
Gulf Power [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash consideration |  |  | $ 4,440 |  |  |
Debt assumed |  |  | 1,300 |  |  |
Assets assumed |  |  | 5,200 |  |  |
Property, plant, and equipment |  |  | 4,000 |  |  |
Regulatory assets |  |  | 494 |  |  |
Assumed liabilities |  |  | 3,400 |  |  |
Regulatory liabilities |  |  | 635 |  |  |
Deferred income taxes |  |  | $ 562 |  |  |
Goodwill |  |  |  |  |  | 2,700
Trans Bay Cable, LLC [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash consideration |  | $ 670 |  |  |  |
Debt assumed |  | 422 |  |  |  |
Assets assumed |  | 703 |  |  |  |
Assumed liabilities |  | $ 643 |  |  |  |
Goodwill |  |  |  |  |  | 610
Goodwill, expected tax deductible amount |  |  |  |  |  | $ 572
Florida City Gas [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash consideration |  |  |  |  | $ 530 |
Stanton Energy Center [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Membership interests acquired |  |  |  | 65.00% | 65.00% |
Natural Gas Generation Facilities [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash consideration |  |  |  |  | $ 200 |
Santee Cooper [Member] | Subsequent Event [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash consideration | $ 8,500 |  |  |  |  |
Payments to Acquire Businesses, Refunds, Gross | $ 941 |  |  |  |  |
Gulf Power [Member] | Gulf Power [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Number of customers served | customer |  |  | 470,000 |  |  |
Number of counties In which entity operates | county |  |  | 8 |  |  |
Length of power lines (mi) | mi |  |  | 9,500 |  |  |
Natural Gas And Or Oil Electric Generating Facility Capacity | MW |  |  | 2,300 |  |  |
NextEra Energy Capital Holdings, Inc. (Consolidated) [Member] | Loans Payable [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Proceeds from Short-term Debt |  |  |  | $ 4,500 |  |
Trans Bay Cable, LLC [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Length of power lines (mi) | mi |  | 53 |  |  |  |
Florida City Gas [Member] | Florida City Gas [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Number of customers served | customer |  |  |  |  | 110,000 |
Length Of Natural Gas Pipeline | mi |  |  |  |  | 3,700 |
Oleader Power Project [Member] | Oleader Power Project [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Membership interests acquired |  |  |  | 100.00% | 100.00% |
Natural-Gas Fired, Simple-Cycle Combustion Turbine Electric Generation Facility | MW |  |  |  |  | 791 |
Entity That Owns Stanton Energy Center Unit A [Member] | Stanton Energy Center [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Membership interests acquired |  |  |  | 100.00% | 100.00% |
Stanton Energy Center [Member] | Stanton Energy Center [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Combined-cycle Electric Generation Facility | MW |  |  |  |  | 660 |

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