Income Taxes	9 Months Ended
Sep. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes NEE's effective income tax rates for the three months ended September 30, 2013 and 2012 were approximately 30% and 27%, respectively. The reduction from the federal statutory rate for those respective periods mainly reflects the benefit of wind production tax credits (PTCs) of approximately $36 million and $35 million, respectively, related to NEER's wind projects and deferred income tax benefits associated with grants (convertible investment tax credits (ITCs)) under the American Recovery and Reinvestment Act of 2009, as amended (Recovery Act), of approximately $29 million and $14 million, respectively, primarily for certain wind and solar projects expected to be placed in service. NEE's effective income tax rates for the nine months ended September 30, 2013 and 2012 were approximately 33% and 27%, respectively. The increase in the rate for the nine months ended September 30, 2013 is primarily due to the establishment of a full valuation allowance during the first quarter of 2013 of approximately $132 million on the deferred tax assets associated with the Spain solar projects. This valuation allowance primarily related to deferred tax assets created as a result of the $300 million impairment and other related charges ($342 million after-tax) recorded during the first quarter of 2013 (see Note 3 - Nonrecurring Fair Value Measurements). In addition, the rates for both periods reflect the effect of PTCs of approximately $161 million and $147 million, respectively, for wind projects at NEER and deferred income tax benefits associated with convertible ITCs of approximately $62 million and $37 million, respectively, primarily for certain wind and solar projects expected to be placed in service. NEE recognizes PTCs as wind energy is generated and sold based on a per kilowatt-hour (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 deferred income tax benefits 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).

Income Taxes

9 Months Ended

Sep. 30, 2013

NEE's effective income tax rates for the three months ended September 30, 2013 and 2012 were approximately 30% and 27%, respectively. The reduction from the federal statutory rate for those respective periods mainly reflects the benefit of wind production tax credits (PTCs) of approximately $36 million and $35 million, respectively, related to NEER's wind projects and deferred income tax benefits associated with grants (convertible investment tax credits (ITCs)) under the American Recovery and Reinvestment Act of 2009, as amended (Recovery Act), of approximately $29 million and $14 million, respectively, primarily for certain wind and solar projects expected to be placed in service.

NEE's effective income tax rates for the nine months ended September 30, 2013 and 2012 were approximately 33% and 27%, respectively. The increase in the rate for the nine months ended September 30, 2013 is primarily due to the establishment of a full valuation allowance during the first quarter of 2013 of approximately $132 million on the deferred tax assets associated with the Spain solar projects. This valuation allowance primarily related to deferred tax assets created as a result of the $300 million impairment and other related charges ($342 million after-tax) recorded during the first quarter of 2013 (see Note 3 - Nonrecurring Fair Value Measurements). In addition, the rates for both periods reflect the effect of PTCs of approximately $161 million and $147 million, respectively, for wind projects at NEER and deferred income tax benefits associated with convertible ITCs of approximately $62 million and $37 million, respectively, primarily for certain wind and solar projects expected to be placed in service.

NEE recognizes PTCs as wind energy is generated and sold based on a per kilowatt-hour (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 deferred income tax benefits 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).