Common Shareholders' Equity (Additional Disclosures Regarding Common and Preferred Stock) (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended
	Dec. 31, 2011	Dec. 31, 2013 NextEra Energy [Member] Serial Preferred Stock [Member]	Dec. 31, 2013 Preferred Stock, $100 Par Value [Member] FPL [Member]	Dec. 31, 2013 Preferred Stock, No Par Value [Member] FPL [Member]	Dec. 31, 2013 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
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