CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
PROPERTY, PLANT AND EQUIPMENT
Total property, plant and equipment - net	$ 65,617	$ 61,386
CURRENT ASSETS
Customer receivables, allowances	13	13
OTHER ASSETS
Other investments	2,380	1,786
Other ($84 and $128 related to a VIE, respectively)	1,114	1,052
CAPITALIZATION
Long-term debt	$ 28,195	$ 26,681
CURRENT LIABILITIES
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	800,000,000	800,000,000
Common Stock, Shares, Outstanding	467,000,000	461,000,000
Related to VIEs [Member]
PROPERTY, PLANT AND EQUIPMENT
Total property, plant and equipment - net	$ 12,331	$ 7,966
OTHER ASSETS
Other investments	483	0
Other ($84 and $128 related to a VIE, respectively)	84	128
CAPITALIZATION
Long-term debt	5,368	684
FPL [Member]
CURRENT ASSETS
Customer receivables, allowances	4	3
OTHER ASSETS
Other ($84 and $128 related to a VIE, respectively)	854	787
CAPITALIZATION
Long-term debt	$ 9,846	$ 9,956
CURRENT LIABILITIES
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000
Common Stock, Shares, Issued	1,000	1,000
FPL [Member] | Related to VIEs [Member]
OTHER ASSETS
Other ($84 and $128 related to a VIE, respectively)	$ 84	$ 128
CAPITALIZATION
Long-term debt	$ 143	$ 210