Common Shareholders' Equity (Additional Disclosures Regarding Common and Preferred Stock) (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended	24 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2010	Dec. 31, 2012 NextEra Energy [Member] Serial Preferred Stock [Member]	Dec. 31, 2012 Preferred Stock, $100 Par Value [Member] FPL [Member]	Dec. 31, 2012 Preferred Stock, No Par Value [Member] FPL [Member]	Dec. 31, 2012 Preferred Stock, No Par Value [Member] FPL [Member] Subordinated Preferred Stock [Member]
Accelerated Share Repurchase [Abstract]
Stock repurchased during period, shares	6,700,000
Stock repurchased, price per share	$ 55.76
Stock repurchased, aggregate price	$ 375
Continuous offering of NextEra Energy common stock [Abstract]
Continuous Offering of NextEra Energy Common Stock - maximum gross sales price			400
Continuous Offering of NextEra Energy Common Stock - gross proceeds		$ 240
Preferred stock [Abstract]
Authorized (in shares)				100,000,000	10,414,100	5,000,000	5,000,000
Par value (in dollars per share)				$ 0.01	$ 100.00	$ 0	$ 0
Outstanding (in shares)				0	0	0	0