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Debt - Narrative (Details) $ in Millions | 1 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 24, 2019 USD ($) revolving_credit_facility | Apr. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) financing | Jun. 30, 2018 USD ($) | [1]
Debt Instrument [Line Items] |  |  |  |
Issuances of long-term debt |  |  | $ 7,554 | $ 2,875
Number of financings with waivers | financing |  |  | 2 |
Total principal outstanding |  |  | $ 164 |
Debt classified as current |  |  | $ 184 |
Number of financings remaining in default | financing |  |  | 1 |
NextEra Energy Capital Holdings, Inc. [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of short-term term loan agreements |  | $ 4,500 |  |
Subsequent Event [Member] | NextEra Energy Capital Holdings, Inc. [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowings from revolving credit facilities | $ 700 |  |  |
Number of revolving credit facilities | revolving_credit_facility | 4 |  |  |
[1] | Amounts have been retrospectively adjusted for an accounting standards update related to leases.

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- Definition Amount of outstanding long-term debt or borrowing associated with any securities or credit agreement for which there has been a default in principal, interest, sinking fund, or redemption provisions, or any breach of covenant that existed at the end of the period and subsequently has not been cured. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(c)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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