Commitments and Contingencies (Long-term Purchase Commitment) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
FPL [Member]
Required capacity and/or minimum payments [Abstract]
Capacity payments	$ 126,000,000		$ 133,000,000
Energy payments	23,000,000		39,000,000
FPL [Member] | Jea And Southern Subsidiaries Contract Range 1 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Minimum annual purchase commitments (in megawatts)	1,330
Time period under contracts	through 2015
FPL [Member] | Jea And Southern Subsidiaries Contract Range 2 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Minimum annual purchase commitments (in megawatts)	375
Time period under contracts	through 2021
FPL [Member] | Qualifying Facilities Contracts [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Minimum total purchase commitments (in megawatts)	705
Expiration dates of purchase commitments	2024 through 2034
FPL [Member] | Natural Gas, Coal, And Oil, Including Transportation And Storage [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments	through 2036
FPL [Member] | Qualifying Facilities Capacity Payments [Member]
Required capacity and/or minimum payments [Abstract]
2013	210,000,000	[1]
2014	285,000,000	[1]
2015	290,000,000	[1]
2016	250,000,000	[1]
2017	255,000,000	[1]
Thereafter	2,225,000,000	[1]
FPL [Member] | Jea And Southern Subsidiaries Capacity Payments [Member]
Required capacity and/or minimum payments [Abstract]
2013	170,000,000	[1]
2014	215,000,000	[1]
2015	195,000,000	[1]
2016	70,000,000	[1]
2017	50,000,000	[1]
Thereafter	10,000,000	[1]
FPL [Member] | Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
2013	1,815,000,000	[2]
2014	1,360,000,000	[2]
2015	570,000,000	[2]
2016	535,000,000	[2]
2017	530,000,000	[2]
Thereafter	6,405,000,000	[2]
FPL [Member] | Coal Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
2013	70,000,000	[2]
2014	35,000,000	[2]
2015	5,000,000	[2]
2016	5,000,000	[2]
2017	0	[2]
Thereafter	0	[2]
NextEra Energy Resources [Member]
Required capacity and/or minimum payments [Abstract]
2013	640,000,000
2014	365,000,000
2015	125,000,000
2016	115,000,000
2017	65,000,000
Thereafter	580,000,000
NextEra Energy Resources [Member] | Contract Group 1 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments	June 2013 through 2030
Commitment amount included in capital expenditures	1,200,000,000
NextEra Energy Resources [Member] | Contract Group 2 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments	June 2013 through 2033
Corporate and Other [Member]
Required capacity and/or minimum payments [Abstract]
2013	25,000,000	[3]
2014	10,000,000	[3]
2015	15,000,000	[3]
2016	10,000,000	[3]
2017	10,000,000	[3]
Thereafter	10,000,000	[3]
Commitment to invest	$ 68,000,000

[1] Capacity charges under these contracts, substantially all of which are recoverable through the capacity clause, totaled approximately $126 million and $133 million for the three months ended March 31, 2013 and 2012, respectively. Energy charges under these contracts, which are recoverable through the fuel clause, totaled approximately $23 million and $39 million for the three months ended March 31, 2013 and 2012, respectively.

[2] Recoverable through the fuel clause.

[3] Includes an approximately $68 million commitment to invest in clean power and technology businesses through 2021.