Commitments and Contingencies (Long-term Purchase Commitment) (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
NextEra Energy Resources [Member]
Required capacity and/or minimum payments [Abstract]
2013	$ 745,000,000			$ 745,000,000
2014	390,000,000			390,000,000
2015	140,000,000			140,000,000
2016	145,000,000			145,000,000
2017	70,000,000			70,000,000
Thereafter	585,000,000			585,000,000
NextEra Energy Resources [Member] | Contract Group 1 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Commitment amount included in capital expenditures	1,400,000,000			1,400,000,000
FPL [Member]
Required capacity and/or minimum payments [Abstract]
Capacity payments	119,000,000		129,000,000	244,000,000		262,000,000
Energy payments	86,000,000		82,000,000	109,000,000		121,000,000
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	140,000,000	[1]		140,000,000	[1]
2014	285,000,000	[1]		285,000,000	[1]
2015	290,000,000	[1]		290,000,000	[1]
2016	250,000,000	[1]		250,000,000	[1]
2017	255,000,000	[1]		255,000,000	[1]
Thereafter	2,225,000,000	[1]		2,225,000,000	[1]
FPL [Member] | Jea And Southern Subsidiaries Capacity Payments [Member]
Required capacity and/or minimum payments [Abstract]
2013	115,000,000	[1]		115,000,000	[1]
2014	215,000,000	[1]		215,000,000	[1]
2015	195,000,000	[1]		195,000,000	[1]
2016	70,000,000	[1]		70,000,000	[1]
2017	50,000,000	[1]		50,000,000	[1]
Thereafter	10,000,000	[1]		10,000,000	[1]
FPL [Member] | Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
2013	1,130,000,000	[2]		1,130,000,000	[2]
2014	1,295,000,000	[2]		1,295,000,000	[2]
2015	570,000,000	[2]		570,000,000	[2]
2016	535,000,000	[2]		535,000,000	[2]
2017	530,000,000	[2]		530,000,000	[2]
Thereafter	6,405,000,000	[2]		6,405,000,000	[2]
FPL [Member] | Coal Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
2013	50,000,000	[2]		50,000,000	[2]
2014	30,000,000	[2]		30,000,000	[2]
2015	5,000,000	[2]		5,000,000	[2]
2016	5,000,000	[2]		5,000,000	[2]
2017	0	[2]		0	[2]
Thereafter	0	[2]		0	[2]
Corporate and Other [Member]
Required capacity and/or minimum payments [Abstract]
2013	30,000,000	[3],[4]		30,000,000	[3],[4]
2014	10,000,000	[3],[4]		10,000,000	[3],[4]
2015	10,000,000	[3],[4]		10,000,000	[3],[4]
2016	10,000,000	[3],[4]		10,000,000	[3],[4]
2017	10,000,000	[3],[4]		10,000,000	[3],[4]
Thereafter	10,000,000	[3],[4]		10,000,000	[3],[4]
Commitment to invest	65,000,000			65,000,000
JOINT OBLIGATIONS OF NEECH AND NEER INCLUDED IN NEER AMOUNTS	$ 145,000,000			$ 145,000,000
Maximum [Member] | NextEra Energy Resources [Member] | Contract Group 1 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments				2030
Maximum [Member] | NextEra Energy Resources [Member] | Contract Group 2 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments				2033
Minimum [Member] | NextEra Energy Resources [Member] | Contract Group 1 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments				August 2013
Minimum [Member] | NextEra Energy Resources [Member] | Contract Group 2 [Member]
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Expiration dates of purchase commitments				August 2013

[1] Capacity charges under these contracts, substantially all of which are recoverable through the capacity clause, totaled approximately $119 million and $129 million for the three months ended June 30, 2013 and 2012, respectively, and approximately $244 million and $262 million for the six months ended June 30, 2013 and 2012, respectively. Energy charges under these contracts, which are recoverable through the fuel clause, totaled approximately $86 million and $82 million for the three months ended June 30, 2013 and 2012, respectively, and approximately $109 million and $121 million for the six months ended June 30, 2013 and 2012, respectively.

[2] Recoverable through the fuel clause.

[3] Includes an approximately $65 million commitment to invest in clean power and technology businesses through 2021.

[4] Excludes approximately $145 million, in 2013, of joint obligations of NEECH and NEER which are included in the NEER amounts above.