Summary of Significant Accounting and Reporting Policies (Policies)	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
NextEra Energy Partners, LP	NextEra Energy Partners, LP - In February and March 2016, NEP completed the sale of 11,155,000 common units representing limited partnership interests in NEP in a public offering for an aggregate purchase price of approximately $287 million, or $25.76 per common unit. This offering, together with issuances of additional common units under NEP's at-the-market equity issuance program during the six months ended June 30, 2016, resulted in a decrease of NEE’s interest in NEP's operating projects to approximately 70.6% at June 30, 2016.
Leases	Leases - In February 2016, the FASB issued an accounting standards update which requires, among other things, that lessees recognize a lease liability, initially measured at the present value of the future lease payments; and a right-of-use asset for all leases (with the exception of short-term leases). The standards update will be effective for NEE and FPL beginning January 1, 2019. Early adoption is permitted. Lessees and lessors must apply a modified retrospective approach for all leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. NEE and FPL are currently evaluating the effect the adoption of this standards update will have on their consolidated financial statements.
Assets and Liabilities Associated with Assets Held for Sale	Assets and Liabilities Associated with Assets Held for Sale - In April 2016, a subsidiary of NEER completed the sale of the Texas natural gas generation facilities for net cash proceeds of approximately $456 million, after transaction costs and working capital adjustments. A NEER affiliate will continue to operate the facilities included in the sale for an initial period of up to one year. In connection with the sale and the related consolidating state income tax effects, a gain of approximately $254 million ($106 million after tax) was recorded in NEE's condensed consolidated statements of income for the three and six months ended June 30, 2016 and is included in taxes other than income taxes and other - net. The carrying amounts of the major classes of assets and liabilities related to the facilities that were classified as held for sale on NEE's condensed consolidated balance sheet as of December 31, 2015 primarily represent property, plant and equipment and the related long-term debt. In May 2016, NEER initiated a plan and received internal authorization to pursue the sale of its ownership interests in its natural gas generation facilities located primarily in Pennsylvania, which have a total generating capacity of 840 MW at June 30, 2016. The carrying amounts of the major classes of assets and liabilities related to the facilities that were classified as held for sale on NEE's condensed consolidated balance sheet at June 30, 2016 primarily represent property, plant and equipment and the related long-term deb
Merger Termination	Merger Termination - On July 15, 2016, the Hawaii Public Utilities Commission issued an order dismissing NEE's and Hawaiian Electric Company, Inc.'s (HECO) merger application. As a result, on July 16, 2016, NEE terminated the agreement and plan of merger dated as of December 3, 2014 (merger agreement), by and among NEE, Hawaiian Electric Industries, Inc. (HEI), and two wholly owned direct subsidiaries of NEE, NEE Acquisition Sub I, LLC and NEE Acquisition Sub II, Inc., under which HECO, a wholly owned subsidiary of HEI, was to become a subsidiary of NEE. Pursuant to the terms of the merger agreement, NEE paid HEI a termination fee of $90 million plus reimbursement to HEI for out-of-pocket expenses incurred in connection with the merger agreement of $5 million, which NEE will record as a merger expense during the third quarter of 2016.
Stock-Based Compensation	Stock-Based Compensation - On March 30, 2016, the FASB issued an accounting standards update related to the accounting for employee share-based payment awards including simplification in areas such as (i) income tax consequences; (ii) classification of awards as either equity or liabilities; and (iii) classification on the statement of cash flows. The standards update was effective for NEE beginning January 1, 2017, however, NEE early adopted the provisions of the standard update during the three months ended June 30, 2016 with an effective date of January 1, 2016. Upon adoption, NEE recorded approximately $18 million primarily related to previously unrecognized excess tax benefits in deferred income taxes with a resulting increase to retained earnings as of January 1, 2016. During the three and six months ended June 30, 2016, the impact of the accounting standards update resulted in approximately $7 million and $24 million, respectively, of excess tax benefits being recorded in NEE's condensed consolidated statements of income; the three months ended March 31, 2016 impact was approximately $17 million, or $0.04 per share after tax for basic and assuming dilution. All other provisions of the standards update did not have a material impact to NEE's condensed consolidated financial statements. The accounting standards update had no effect on FPL.

Disclosure of accounting policy for leasing arrangements (both lessor and lessee). This disclosure may address (1) lease classification (that is, operating versus capital), (2) how the term of a lease is determined (for example, the circumstances in which a renewal option is considered part of the lease term), (3) how rental revenue or expense is recognized for a lease that contains rent escalations, (4) an entity's accounting treatment for deferred rent, including that which arises from lease incentives, rent abatements, rent holidays, or tenant allowances (5) an entity's accounting treatment for contingent rental payments and (6) an entity's policy for reviewing, at least annually, the residual values of sales-type and direct-finance leases. The disclosure also may indicate how the entity accounts for its capital leases, leveraged leases or sale-leaseback transactions.