CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Total property, plant and equipment - net	$ 49,413	$ 42,490
Customer receivables, net of allowances	10	11
Securitized storm-recovery costs	461	517
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, authorized (in shares)	800,000,000	800,000,000	800,000,000
Common stock, outstanding (in shares)	424,000,000	416,000,000
Long-term debt	23,177	20,810
Related to VIEs [Member]
Total property, plant and equipment - net	4,487	3,063
Securitized storm-recovery costs	274	317
Long-term debt	1,369	1,364
FPL [Member]
Customer receivables, net of allowances	7	8
Securitized storm-recovery costs	461	517
Common stock, authorized (in shares)	1,000	1,000
Common stock, par value	$ 0	$ 0
Common stock, issued (in shares)	1,000	1,000
Common stock, outstanding (in shares)	1,000	1,000
Long-term debt	8,329	7,483
FPL [Member] | Related to VIEs [Member]
Securitized storm-recovery costs	274	317
Long-term debt	$ 386	$ 437