Financial Instruments (Details) (USD $) In Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010	Jun. 30, 2011		Jun. 30, 2010	Dec. 31, 2010
Financial Instruments [Abstract]
Other investments, primarily notes receivable	$ 94			$ 94			$ 97
Other investments, primarily notes receivable, included in other current receivables	46			46			48
Other investments:
Special use funds: equity method investments	90			90			76
Special use funds: loans	34			34			17
Available for sale debt securities amortized cost	1,623			1,623			1,616
Available for sale equity securities amortized cost	1,420			1,420			1,489
Held to maturity notes receivable maturity date - low				2014
Held to maturity notes receivable maturity date - high				2029
Special use funds: storm fund assets	128			128
Special use funds: nuclear decommissioning fund assets	3,777			3,777
Special use funds: nuclear decommissioning funds weighted average maturity (in years)	8Y			8Y
Special use funds: storm fund weighted average maturity (in years)	3Y			3Y
Realized gains and losses and proceeds from the sale of available for sale securities [Abstract]
Realized gains	57		17	87		62
Realized losses	22		4	43		14
Proceeds from sale or maturity of securities	1,228		1,575	2,575		4,138
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Special use funds	3,905	[1]		3,905	[1]		3,742	[1]
Other investments:
Notes receivable	503			503			525
Debt securities	120	[2]		120	[2]		114	[2]
Equity securities	75			75			57
Long-term debt, including current maturities	20,399			20,399			19,929
Interest rate swaps - net unrealized losses	(93)			(93)			(16)
Foreign currency swaps - net unrealized gains	1			1			44
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Special use funds	3,905	[3]		3,905	[3]		3,742	[3]
Other investments:
Notes receivable	548	[4]		548	[4]		583	[4]
Debt securities	120	[3]		120	[3]		114	[3]
Equity securities	154	[5]		154	[5]		125	[5]
Long-term debt, including current maturities	21,331	[6]		21,331	[6]		20,756	[6]
Interest rate swaps - net unrealized losses	(93)	[7]		(93)	[7]		(16)	[7]
Foreign currency swaps - net unrealized gains	1	[7]		1	[7]		44	[7]
Available For Sale Securities: Special Use Funds - Equity Securities [Member]
Total unrealized gains on available for sale securities [Abstract]
Unrealized gains	670			670			612
Available For Sale Securities: Special Use Funds - U.S. Government And Municipal Bonds [Member]
Total unrealized gains on available for sale securities [Abstract]
Unrealized gains	19			19			15
Available For Sale Securities: Special Use Funds - Corporate Debt Securities [Member]
Total unrealized gains on available for sale securities [Abstract]
Unrealized gains	24			24			23
Available For Sale Securities: Special Use Funds - Mortgage-Backed Securities [Member]
Total unrealized gains on available for sale securities [Abstract]
Unrealized gains	23			23			20
Available For Sale Securities: Special Use Funds - Other Debt Securities [Member]
Total unrealized gains on available for sale securities [Abstract]
Unrealized gains	$ 3			$ 3			$ 2

[1] At June 30, 2011, includes $90 million of investments accounted for under the equity method and $34 million of loans not measured at fair value on a recurring basis ($104 million and $18 million, respectively, for FPL). At December 31, 2010, includes $76 million of investments accounted for under the equity method and $17 million of loans not measured at fair value on a recurring basis ($94 million and $11 million, respectively, for FPL). For the remaining balances, see Note 3 for classification by major security type. The amortized cost of debt and equity securities is $1,623 million and $1,420 million, respectively, at June 30, 2011 and $1,616 million and $1,489 million, respectively, at December 31, 2010 ($1,308 million and $857 million, respectively, at June 30, 2011 and $1,281 million and $943 million, respectively, at December 31, 2010 for FPL).

[2] Classified as trading securities.

[3] Based on quoted market prices for these or similar issues.

[4] Classified as held to maturity. Based on market prices provided by external sources. Notes receivable bear interest primarily at fixed rates and mature from 2014 to 2029. Notes receivable are considered impaired and placed in non-accrual status when it becomes probable that all amounts due cannot be collected in accordance with the contractual terms of the agreement. The assessment to place notes receivable in non-accrual status considers various credit indicators, such as credit standings and ratings and market-related information. As of June 30, 2011, neither NextEra Energy nor FPL had any notes receivable reported in non-accrual status.

[5] Modeled internally based on latest market data.

[6] Provided by external sources based on market prices indicative of market conditions.

[7] Modeled internally based on market values using discounted cash flow analysis and credit valuation adjustment.