CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Total property, plant and equipment - net	$ 78,995	$ 70,334
Customer receivables, allowances	15	10
Regulatory assets, current	523	448
Long-term debt	36,144	26,782
Current portion of long-term debt	$ 2,888	$ 2,716
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	800,000,000	800,000,000
Common stock, shares, outstanding (in shares)	489,000,000	478,000,000
Related to VIEs [Member]
Total property, plant and equipment - net	$ 10,084	$ 10,553
Regulatory assets, current	0	41
Noncontrolling interest in variable interest entity	3,577	3,265
Long-term debt	902	1,020
Current portion of long-term debt	31	74
FPL [Member]
Customer receivables, allowances	5	3
Regulatory assets, current	426	447
Long-term debt	14,144	11,688
Current portion of long-term debt	$ 27	$ 95
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	1,000	1,000
Common stock, shares, outstanding (in shares)	1,000	1,000
Common stock, shares, issued (in shares)	1,000	1,000
FPL [Member] | Related to VIEs [Member]
Regulatory assets, current	$ 0	$ 41
Current portion of long-term debt	$ 0	$ 74