v3.7.0.1

Derivative Instruments (Net Notional Volumes and Additional Disclosures) (Details) bbl in Millions, MWh in Millions, MMBTU in Millions, $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 USD ($) MWh MMBTU bbl | Dec. 31, 2016 USD ($) MWh MMBTU bbl
Currency Swap [Member] |  |
Derivative [Line Items] |  |
Notional amount | $ | $ 719 | $ 705
Interest Rate Contract [Member] |  |
Derivative [Line Items] |  |
Notional amount | $ | $ 14,900 | $ 15,100
Short [Member] | Commodity contract - Power [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MWh) | MWh | (80) | (84)
Short [Member] | Commodity contract - Oil [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in barrels) | bbl | (16) | (7)
Long [Member] | Commodity contract - Natural gas [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MMBtu) | MMBTU | 1,033 | 1,002
FPL [Member] | Short [Member] | Commodity contract - Power [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MWh) | MWh | 0 | 0
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 - Natural gas [Member] |  |
Derivative [Line Items] |  |
Non-monetary net notional amount (in MMBtu) | MMBTU | 466 | 618

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
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- Definition Nominal volume used to calculate payments on a derivative instrument. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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