CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
OPERATING REVENUES		$ 17,195	$ 16,155	$ 17,486
OPERATING EXPENSES (INCOME)
Fuel, purchased power and interchange		4,071	4,042	5,327
Other operations and maintenance		3,327	3,389	3,269
Storm restoration costs		1,255	0	0
Impairment charges		446	7	2
Merger-related		69	135	26
Depreciation and amortization		2,357	3,077	2,831
Losses (gains) on disposal of a business/assets - net		(1,111)	(446)	4
Taxes other than income taxes and other - net		1,455	1,343	1,395
Total operating expenses - net		11,869	11,547	12,854
OPERATING INCOME		5,326	4,608	4,632
OTHER INCOME (DEDUCTIONS)
Interest expense		(1,558)	(1,093)	(1,211)
Benefits associated with differential membership interests - net		460	309	216
Equity in earnings of equity method investees		141	148	107
Allowance for equity funds used during construction		92	86	70
Interest income		81	82	86
Gains on disposal of investments and other property - net		114	40	90
Other than temporary impairment losses on securities held in nuclear decommissioning funds		(10)	(23)	(40)
Revaluation of contingent consideration		0	189	0
Other - net		21	42	40
Total other deductions - net		(659)	(220)	(642)
Income (loss) before income taxes		4,667	4,388	3,990
INCOME TAX EXPENSE (BENEFIT)		(653)	1,383	1,228
NET INCOME		5,320	3,005	2,762
LESS NET INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(58)	93	10
Net income attributable to parent		$ 5,378	$ 2,912	$ 2,752
Earnings per share attributable to NEE:
Basic		$ 11.47	$ 6.29	$ 6.11
Assuming dilution		$ 11.38	$ 6.25	$ 6.06
Weighted-average number of common shares outstanding:
Basic		468.8	463.1	450.5
Assuming dilution		472.5	465.8	454.0
FPL[Member]
OPERATING REVENUES		$ 11,972	$ 10,895	$ 11,651
OPERATING EXPENSES (INCOME)
Fuel, purchased power and interchange		3,542	3,297	4,276
Other operations and maintenance		1,559	1,600	1,617
Storm restoration costs		1,255	0	0
Depreciation and amortization		933	1,651	1,576
Taxes other than income taxes and other - net		1,292	1,189	1,205
Total operating expenses - net		8,581	7,737	8,674
OPERATING INCOME		3,391	3,158	2,977
OTHER INCOME (DEDUCTIONS)
Interest expense		(482)	(456)	(445)
Allowance for equity funds used during construction		79	74	68
Other - net		(2)	2	5
Total other deductions - net		(405)	(380)	(372)
Income (loss) before income taxes		2,986	2,778	2,605
INCOME TAX EXPENSE (BENEFIT)		1,106	1,051	957
Net income attributable to parent	[1]	1,880	1,727	1,648
Operating Segments [Member] | FPL[Member]
OPERATING REVENUES		11,972	10,895	11,651
OPERATING EXPENSES (INCOME)
Depreciation and amortization		933	1,651	1,576
Total operating expenses - net		8,581	7,737	8,674
OTHER INCOME (DEDUCTIONS)
Interest expense		(482)	(456)	(445)
Equity in earnings of equity method investees		0	0	0
Interest income		2	2	7
INCOME TAX EXPENSE (BENEFIT)		1,106	1,051	957
NET INCOME		1,880	1,727	1,648
Net income attributable to parent		$ 1,880	$ 1,727	$ 1,648

[1] FPL's comprehensive income is the same as reported net income