Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011
Segment Reporting Information [Line Items]
OPERATING REVENUE	$ 3,843		$ 4,382		$ 10,881		$ 11,476
Operating revenues	3,843		4,382		10,881		11,476
Operating expenses	3,094		3,471		8,266		9,230
Net income (loss)	415		407		1,482		1,256
Total assets	62,049				62,049				57,188
Deemed capital structure of NextEra Energy Resources	70.00%				70.00%
Loss on natural gas-fired generating assets held for sale	0		148		0		148
Impairment charges	0		0		0		51
Impairment Of Long Lived Assets Held For Use After Tax							31
Deferred state tax benefit related to recent state tax law changes							64
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUE	2,975		3,152
Operating revenues					7,778		8,200
Operating expenses	2,256		2,496		5,916		6,566
Net income (loss)	392		347		984		852
Total assets	34,120				34,120				31,816
NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues	808	[1]	1,172	[1]	2,929	[1]	3,110	[1]
Operating expenses	785	[1]	920	[1]	2,201	[1]	2,520	[1],[2]
Net income (loss)	44	[1],[3]	67	[1],[3]	516	[1],[3]	371	[1],[3],[4]
Total assets	25,761				25,761				23,459
Loss on natural gas-fired generating assets held for sale							91
Impairment Of Long Lived Assets Held For Use After Tax							31
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	60		58		174		166
Operating expenses	53		55		149		144
Net income (loss)	(21)		(7)	[5]	(18)		33	[5],[6]
Total assets	2,168				2,168				1,913
Loss on natural gas-fired generating assets held for sale							6
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUE	2,975		3,152		7,778		8,200
Operating expenses	2,256		2,496		5,916		6,566
Net income (loss)	392		347		984		852
Total assets	$ 34,120				$ 34,120				$ 31,816

[1] Interest expense allocated from NEECH is based on a deemed capital structure of 70% debt. For this purpose, the deferred credit associated with differential membership interests sold by NEER subsidiaries is included with debt. Residual non-utility interest expense is included in Corporate and Other.

[2] Includes impairment charges of approximately $51 million. See Note 3 - Nonrecurring Fair Value Measurements.

[3] See Note 5 for a discussion of NEER's tax benefits related to PTCs. 2011 includes after-tax loss on natural gas-fired generating assets held for sale of $91 million. See Note 3 - Nonrecurring Fair Value Measurements.

[4] Includes after-tax impairment charges of approximately $31 million. See Note 3 - Nonrecurring Fair Value Measurements.

[5] Includes after-tax loss on natural gas-fired generating assets held for sale of $6 million. See Note 3 - Nonrecurring Fair Value Measurements.

[6] Includes the state deferred income tax benefit of approximately $64 million. See Note 5.