Income Taxes	9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes NEE's effective income tax rates for the three months ended September 30, 2017 and 2016 were approximately 30% and 35%, respectively. The rates for both periods reflect the benefit of PTCs of approximately $27 million and $19 million, respectively, related to NEER's wind projects, as well as ITCs and deferred income taxes associated with grants under the Recovery Act (convertible ITCs) totaling approximately $51 million and $34 million, respectively, related to solar and certain wind projects at NEER. NEE's effective income tax rates for the nine months ended September 30, 2017 and 2016 were approximately 29% and 31%, respectively. The rates for both periods reflect the benefit of PTCs of approximately $85 million and $92 million, respectively, related to NEER's wind projects, as well as ITCs and deferred income taxes associated with convertible ITCs totaling approximately $220 million and $115 million, respectively, related to solar and certain wind projects at NEER. NEE recognizes PTCs as wind energy is generated and sold based on a per kWh rate prescribed in applicable federal and state statutes, which may differ significantly from amounts computed, on a quarterly basis, using an overall effective income tax rate anticipated for the full year. NEE uses this method of recognizing PTCs for specific reasons, including that PTCs are an integral part of the financial viability of most wind projects and a fundamental component of such wind projects' results of operations. PTCs, as well as ITCs and deferred income taxes associated with convertible ITCs, can significantly affect NEE's effective income tax rate depending on the amount of pretax income. The amount of PTCs recognized can be significantly affected by wind generation and by the roll off of PTCs after ten years of production (PTC roll off). In April 2016, a court decision was issued approving a reorganization of certain Canadian assets that provided for tax bases in certain of these assets (Canadian tax restructuring). NEE recorded approximately $30 million of the associated income tax benefits during the nine months ended September 30, 2016, which effectively reversed a portion of the income tax charge NEE recorded in the second quarter of 2014 associated with structuring Canadian assets. In addition, consolidating income tax adjustments for the nine months ended September 30, 2016 include an approximately $58 million income tax charge related to the sale of NEER's ownership interest in merchant natural gas generation facilities located in Texas with a total generating capacity of 2,884 MW (Texas natural gas generation facilities). See Note 9 - Assets and Liabilities Associated with Assets Held for Sale.

Income Taxes

NEE's effective income tax rates for the three months ended September 30, 2017 and 2016 were approximately 30% and 35%, respectively. The rates for both periods reflect the benefit of PTCs of approximately $27 million and $19 million, respectively, related to NEER's wind projects, as well as ITCs and deferred income taxes associated with grants under the Recovery Act (convertible ITCs) totaling approximately $51 million and $34 million, respectively, related to solar and certain wind projects at NEER.

NEE's effective income tax rates for the nine months ended September 30, 2017 and 2016 were approximately 29% and 31%, respectively. The rates for both periods reflect the benefit of PTCs of approximately $85 million and $92 million, respectively, related to NEER's wind projects, as well as ITCs and deferred income taxes associated with convertible ITCs totaling approximately $220 million and $115 million, respectively, related to solar and certain wind projects at NEER.

NEE recognizes PTCs as wind energy is generated and sold based on a per kWh rate prescribed in applicable federal and state statutes, which may differ significantly from amounts computed, on a quarterly basis, using an overall effective income tax rate anticipated for the full year. NEE uses this method of recognizing PTCs for specific reasons, including that PTCs are an integral part of the financial viability of most wind projects and a fundamental component of such wind projects' results of operations. PTCs, as well as ITCs and deferred income taxes associated with convertible ITCs, can significantly affect NEE's effective income tax rate depending on the amount of pretax income. The amount of PTCs recognized can be significantly affected by wind generation and by the roll off of PTCs after ten years of production (PTC roll off).

In April 2016, a court decision was issued approving a reorganization of certain Canadian assets that provided for tax bases in certain of these assets (Canadian tax restructuring). NEE recorded approximately $30 million of the associated income tax benefits during the nine months ended September 30, 2016, which effectively reversed a portion of the income tax charge NEE recorded in the second quarter of 2014 associated with structuring Canadian assets. In addition, consolidating income tax adjustments for the nine months ended September 30, 2016 include an approximately $58 million income tax charge related to the sale of NEER's ownership interest in merchant natural gas generation facilities located in Texas with a total generating capacity of 2,884 MW (Texas natural gas generation facilities). See Note 9 - Assets and Liabilities Associated with Assets Held for Sale.