Commitments and Contingencies, Long-term Purchase Commitment (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011
FPL [Member]
Required capacity and/or minimum payments [Abstract]
Capacity payments	$ 129,000,000		$ 124,000,000	$ 262,000,000		$ 247,000,000
Energy payments	82,000,000		129,000,000	121,000,000		206,000,000
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]
2012	150,000,000	[1]		150,000,000	[1]
2013	270,000,000	[1]		270,000,000	[1]
2014	275,000,000	[1]		275,000,000	[1]
2015	280,000,000	[1]		280,000,000	[1]
2016	245,000,000	[1]		245,000,000	[1]
Thereafter	2,415,000,000	[1]		2,415,000,000	[1]
FPL [Member] | Jea And Southern Subsidiaries Capacity Payments [Member]
Required capacity and/or minimum payments [Abstract]
2012	115,000,000	[1]		115,000,000	[1]
2013	230,000,000	[1]		230,000,000	[1]
2014	220,000,000	[1]		220,000,000	[1]
2015	195,000,000	[1]		195,000,000	[1]
2016	70,000,000	[1]		70,000,000	[1]
Thereafter	155,000,000	[1]		155,000,000	[1]
FPL [Member] | Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
2012	1,000,000,000	[2]		1,000,000,000	[2]
2013	1,330,000,000	[2]		1,330,000,000	[2]
2014	1,030,000,000	[2]		1,030,000,000	[2]
2015	565,000,000	[2]		565,000,000	[2]
2016	525,000,000	[2]		525,000,000	[2]
Thereafter	6,925,000,000	[2]		6,925,000,000	[2]
FPL [Member] | Coal Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
2012	40,000,000	[2]		40,000,000	[2]
2013	90,000,000	[2]		90,000,000	[2]
2014	35,000,000	[2]		35,000,000	[2]
2015	5,000,000	[2]		5,000,000	[2]
2016	5,000,000	[2]		5,000,000	[2]
Thereafter	0	[2]		0	[2]
NextEra Energy Resources [Member]
Required capacity and/or minimum payments [Abstract]
2012	1,680,000,000			1,680,000,000
2013	610,000,000			610,000,000
2014	120,000,000			120,000,000
2015	110,000,000			110,000,000
2016	105,000,000			105,000,000
Thereafter	605,000,000			605,000,000
NextEra Energy Resources [Member] | Contract Group 1 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments				August 2012 through 2030
Commitment amount included in capital expenditures	2,600,000,000			2,600,000,000
NextEra Energy Resources [Member] | Contract Group 2 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments				September 2012 through 2033
Corporate and Other [Member]
Required capacity and/or minimum payments [Abstract]
2012	110,000,000	[3]		110,000,000	[3]
2013	30,000,000	[3]		30,000,000	[3]
2014	15,000,000	[3]		15,000,000	[3]
2015	15,000,000	[3]		15,000,000	[3]
2016	15,000,000	[3]		15,000,000	[3]
Thereafter	0	[3]		0	[3]
Commitment to invest	$ 73,000,000			$ 73,000,000

[1] Capacity charges under these contracts, substantially all of which are recoverable through the capacity clause, totaled approximately $129 million and $124 million for the three months ended June 30, 2012 and 2011, respectively, and approximately $262 million and $247 million for the six months ended June 30, 2012 and 2011, respectively. Energy charges under these contracts, which are recoverable through the fuel clause, totaled approximately $82 million and $129 million for the three months ended June 30, 2012 and 2011, respectively

[2] Recoverable through the fuel clause.

[3] Includes an approximately $73 million commitment to invest in clean power and technology businesses through 2017.