Commitments and Contingencies (Estimated Planned Capital Expenditures) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 MW
FPL [Member]
Planned Capital Expenditures [Line Items]
2014	$ 3,220,000,000	[1]
2015	2,500,000,000	[1]
2016	2,155,000,000	[1]
2017	1,925,000,000	[1]
2018	1,905,000,000	[1]
Total	11,705,000,000	[1]
Incremental Capital Expenditures Low Range	1,500,000,000
Incremental Capital Expenditures High Range	2,500,000,000
FPL [Member] | New Generation Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	730,000,000	[2],[3],[4]
2015	255,000,000	[2],[3],[4]
2016	80,000,000	[2],[3],[4]
2017	0	[2],[3],[4]
2018	0	[2],[3],[4]
Total	1,065,000,000	[2],[3],[4]
FPL [Member] | Existing Generation Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	805,000,000	[2]
2015	680,000,000	[2]
2016	610,000,000	[2]
2017	580,000,000	[2]
2018	545,000,000	[2]
Total	3,220,000,000	[2]
FPL [Member] | Transmission and Distribution Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	1,370,000,000
2015	1,200,000,000
2016	1,125,000,000
2017	955,000,000
2018	1,020,000,000
Total	5,670,000,000
FPL [Member] | Nuclear Fuel Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	140,000,000
2015	210,000,000
2016	220,000,000
2017	225,000,000
2018	180,000,000
Total	975,000,000
FPL [Member] | General and Other Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	175,000,000
2015	155,000,000
2016	120,000,000
2017	165,000,000
2018	160,000,000
Total	775,000,000
FPL [Member] | Generation Expenditures [Member]
Planned Capital Expenditures [Line Items]
Allowance for funds used during construction (AFUDC) - 2014	45,000,000
Allowance for funds used during construction (AFUDC) - 2015	53,000,000
Allowance for funds used during construction (AFUDC) - 2016	28,000,000
NEER [Member]
Planned Capital Expenditures [Line Items]
2014	3,075,000,000
2015	1,125,000,000
2016	910,000,000
2017	300,000,000
2018	360,000,000
Total	5,770,000,000
NEER [Member] | Wind Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	1,660,000,000	[5]
2015	75,000,000	[5]
2016	5,000,000	[5]
2017	5,000,000	[5]
2018	15,000,000	[5]
Total	1,760,000,000	[5]
Planned New Wind Generation To Be Added over 5 Years (in megawatts)	1,390
Planned New Wind Generation Added To Date In Current Year Mw	250
NEER [Member] | Wind Expenditures [Member] | Minimum [Member]
Planned Capital Expenditures [Line Items]
Planned new wind generation, capacity (in megawatts)	2,000
Planned New Wind Projects, Next Two Years, Estimated Cost	3,500,000,000
NEER [Member] | Wind Expenditures [Member] | Maximum [Member]
Planned Capital Expenditures [Line Items]
Planned new wind generation, capacity (in megawatts)	2,500
Planned New Wind Projects, Next Two Years, Estimated Cost	4,500,000,000
NEER [Member] | Wind Expenditures [Member] | Canada [Member]
Planned Capital Expenditures [Line Items]
Planned New Wind Generation To Be Added over 5 Years (in megawatts)	465
NEER [Member] | Solar Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	570,000,000	[6]
2015	740,000,000	[6]
2016	530,000,000	[6]
2017	0	[6]
2018	0	[6]
Total	1,840,000,000	[6]
Planned new solar generation over 5 year period (in megawatts)	765
Ownership interest	50.00%
Planned new solar capacity of equity method investment (in megawatts)	550
NEER [Member] | Solar Expenditures [Member] | Requiring Internal Approvals [Member]
Planned Capital Expenditures [Line Items]
Planned new solar generation over 5 year period (in megawatts)	40
Planned new Solar Capacity of projects, Estimated costs	100,000,000
NEER [Member] | Solar Expenditures [Member] | Expected to Close Early 2014 [Member]
Planned Capital Expenditures [Line Items]
Planned new solar generation over 5 year period (in megawatts)	250
Planned new Solar Capacity of projects, Estimated costs	1,000,000,000
NEER [Member] | Nuclear Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	310,000,000	[7]
2015	285,000,000	[7]
2016	300,000,000	[7]
2017	255,000,000	[7]
2018	270,000,000	[7]
Total	1,420,000,000	[7]
NEER [Member] | Other Expenditures [Member]
Planned Capital Expenditures [Line Items]
2014	535,000,000	[8]
2015	25,000,000	[8]
2016	75,000,000	[8]
2017	40,000,000	[8]
2018	75,000,000	[8]
Total	750,000,000	[8]
Corporate and Other [Member]
Planned Capital Expenditures [Line Items]
2014	170,000,000	[9]
2015	415,000,000	[9]
2016	735,000,000	[9]
2017	345,000,000	[9]
2018	95,000,000	[9]
Total	1,760,000,000	[9]
Corporate and Other [Member] | Natural Gas Expenditures [Member]
Planned Capital Expenditures [Line Items]
Planned capital expenditures	1,400,000,000
Planned Capital Expenditures AFDUC, 2014	2,000,000
Planned Capital Expenditures AFDUC, 2015	8,000,000
Planned Capital Expenditures AFDUC, 2016	20,000,000
Planned Capital Expenditures AFDUC, 2017	11,000,000
Corporate and Other [Member] | Natural Gas Expenditures [Member] | Natural Gas Pipeline System, Northern Portion [Member]
Planned Capital Expenditures [Line Items]
Ownership interest	33.00%
Equity Method Investment in Natural Gas Pipeline, next five years	880,000,000
Corporate and Other [Member] | Natural Gas Expenditures [Member] | Natural Gas Pipeline System, Southern Portion [Member]
Planned Capital Expenditures [Line Items]
Investment in equity method investees	$ 520,000,000

[1] FPL has identified $1.5 billion to $2.5 billion in potential incremental capital expenditures through 2016 in addition to what is included in the table above.

[2] Includes AFUDC of approximately $45 million, $53 million and $28 million for 2014 through 2016, respectively.

[3] Includes land, generating structures, transmission interconnection and integration and licensing.

[4] Consists of projects that have received FPSC approval. Excludes capital expenditures for the construction costs for the two additional nuclear units at FPL's Turkey Point site beyond what is required to receive an NRC license for each unit.

[5] Consists of capital expenditures for new wind projects and related transmission totaling approximately 1,390 MW, including approximately 465 MW in Canada, that have received applicable internal approvals. NEER expects to add new U.S. wind generation of 2,000 MW to 2,500 MW in 2013 through 2015, including 250 MW added in 2013, at a total cost of approximately $3.5 billion to $4.5 billion.

[6] Consists of capital expenditures for new solar projects and related transmission totaling approximately 765 MW that have received applicable internal approvals, including equity contributions associated with a 50% equity investment in a 550 MW solar project. Includes approximately $1 billion of total estimated costs associated with the pending acquisition of the development rights for a 250 MW solar project that is expected to close in early 2014, subject to certain conditions precedent, and construction, which is expected to be completed in 2016. Excludes solar projects requiring internal approvals with generation totaling 40 MW with an estimated cost of approximately $100 million.

[7] Includes nuclear fuel.

[8] Consists of capital expenditures that have received applicable internal approvals

[9] Includes capital expenditures totaling approximately $1.4 billion for 2014 through 2018 for construction of a natural gas pipeline system that has received applicable internal approvals, including approximately $880 million of equity contributions associated with a 33% equity investment in the northern portion of the natural gas pipeline system and $520 million for the southern portion, which includes AFUDC of approximately $2 million, $8 million, $20 million and $11 million for 2014 through 2017, respectively. The natural gas pipeline system is subject to certain conditions, including FERC approval. A FERC decision is expected in 2015. See Contracts below.