CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Total property, plant and equipment - net	$ 66,912	$ 61,386
Customer receivables, net of allowances	5	13
Other investments ($479 related to a VIE at December 31, 2016)	2,482	1,786
Regulatory assets ($107 and $128 related to a VIE, respectively)	$ 1,894	$ 1,778
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized (in shares)	800,000,000	800,000,000
Common stock, outstanding (in shares)	468,000,000	461,000,000
Long-term debt	$ 27,818	$ 26,681
Related to VIEs [Member]
Total property, plant and equipment - net	14,632	7,966
Other investments ($479 related to a VIE at December 31, 2016)	479	0
Regulatory assets ($107 and $128 related to a VIE, respectively)	107	128
Long-term debt	5,080	684
FPL [Member]
Customer receivables, net of allowances	3	2
Regulatory assets ($107 and $128 related to a VIE, respectively)	$ 1,573	$ 1,513
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	$ 9,705	$ 9,956
FPL [Member] | Related to VIEs [Member]
Regulatory assets ($107 and $128 related to a VIE, respectively)	107	128
Long-term debt	$ 144	$ 210