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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017 | [3]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, beginning of period |  | $ (127) | $ (144) |  |
Amounts reclassified from AOCI to interest expense |  | 1 | 2 |  |
Net unrealized losses on foreign currency translation |  | (4) |  |  |
Other comprehensive income (loss) related to equity method investee |  | 4 | 1 | [1] |
Total other comprehensive income, net of tax | [2] | 1 | 3 | [1] |
Balance, end of period |  | (126) | (141) |  |
AOCI attributable to noncontrolling interest |  | (127) | (139) |  |
AOCI attributable to NextEra Energy Partners |  | 1 | (2) |  | $ 1
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, beginning of period |  | 1 | (4) |  |
Amounts reclassified from AOCI to interest expense |  | 1 | 2 |  |
Net unrealized losses on foreign currency translation |  | 0 |  |  |
Other comprehensive income (loss) related to equity method investee |  | 0 | 0 |  |
Total other comprehensive income, net of tax |  | 1 | 2 |  |
Balance, end of period |  | 2 | (2) |  |
AOCI attributable to noncontrolling interest |  | 0 | (3) |  |
AOCI attributable to NextEra Energy Partners |  | 2 | 1 |  |
Net Unrealized Gains (Losses) on Foreign Currency Translation [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, beginning of period |  | (98) | (105) |  |
Amounts reclassified from AOCI to interest expense |  | 0 | 0 |  |
Net unrealized losses on foreign currency translation |  | (4) |  |  |
Other comprehensive income (loss) related to equity method investee |  | 0 | 0 |  |
Total other comprehensive income, net of tax |  | (4) | 0 |  |
Balance, end of period |  | (102) | (105) |  |
AOCI attributable to noncontrolling interest |  | (99) | (101) |  |
AOCI attributable to NextEra Energy Partners |  | (3) | (4) |  |
Other Comprehensive Income (Loss) Related to Equity Method Investee [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |
Balance, beginning of period |  | (30) | (35) |  |
Amounts reclassified from AOCI to interest expense |  | 0 | 0 |  |
Net unrealized losses on foreign currency translation |  | 0 |  |  |
Other comprehensive income (loss) related to equity method investee |  | 4 | 1 |  |
Total other comprehensive income, net of tax |  | 4 | 1 |  |
Balance, end of period |  | (26) | (34) |  |
AOCI attributable to noncontrolling interest |  | (28) | (35) |  |
AOCI attributable to NextEra Energy Partners |  | $ 2 | $ 1 |  |
[1] | Prior-period financial information has been retrospectively adjusted as discussed in Note 1.
[2] | At March 31, 2018, approximately $6 million of preferred unit distributions were accrued and are payable in May 2018.
[3] | {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjZhMmRlOTAyZWEzZTQ3YTk5NDNjMGRmZTNlMmNjNjA3fFRleHRTZWxlY3Rpb246Njc3Q0FFNTY0QzczNUIyOUFFOEFCQjFGQTBFNjYwMDcM}

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- Definition Accumulated Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest + References No definition available. + Details
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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