Debt (Schedule of Debt Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Current portion of long-term debt	$ 6,633	$ 1,785
Long-term debt, excluding current maturities	55,256	50,960
Repayment prior to maturity	6,633
FPL [Member]
Debt Instrument [Line Items]
Unamortized debt issuance costs and premium and discount	(203)	(191)
Total long-term debt	21,002	18,510
Current portion of long-term debt	1,547	536
Long-term debt, excluding current maturities	19,455	17,974
Repayment prior to maturity	1,547
FPL [Member] \| First mortgage bonds - fixed [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 15,790	$ 14,290
Weighted-average interest rate	4.03%	4.20%
FPL [Member] \| Pollution control, solid waste disposal and industrial development revenue bonds - primary variable [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,366	$ 1,407
Weighted-average interest rate	3.20%	0.15%
Variable rate tax exempt bonds	$ 1,334
FPL [Member] \| Senior Unsecured Notes - Primarily Variable
Debt Instrument [Line Items]
Long-term debt, gross	$ 4,042	$ 2,697
Weighted-average interest rate	3.99%	1.37%
Floating rate notes that permit individual noteholders to require repayment prior to maturity	$ 1,327
FPL [Member] \| Other long-term debt - primarily variable
Debt Instrument [Line Items]
Long-term debt, gross	$ 7	$ 307
Weighted-average interest rate	7.90%	0.82%
NEER [Member]
Debt Instrument [Line Items]
Unamortized debt issuance costs and premium and discount	$ (108)	$ (92)
Total long-term debt	9,051	7,419
Current portion of long-term debt	694	664
Long-term debt, excluding current maturities	8,357	6,755
NEER [Member] \| Senior secured limited-recourse term loans - variable [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 3,582	$ 3,100
Weighted-average interest rate	6.24%	1.74%
NEER [Member] \| Senior secured limited-recourse long-term loans - fixed
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,452	$ 2,475
Weighted-average interest rate	3.43%	3.30%
NEER [Member] \| Other Long-Term Debt - Primarily Variable [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 777	$ 785
Weighted-average interest rate	6.33%	2.50%
Capital Holdings [Member]
Debt Instrument [Line Items]
Unamortized debt issuance costs and premium and discount	$ (135)	$ (120)
Total long-term debt	31,836	26,816
Current portion of long-term debt	4,392	585
Long-term debt, excluding current maturities	27,444	26,231
Capital Holdings [Member] \| Other long-term debt - primarily variable
Debt Instrument [Line Items]
Long-term debt, gross	$ 675	$ 1,245
Weighted-average interest rate	5.02%	0.64%
Capital Holdings [Member] \| Other long-term debt - primarily fixed
Debt Instrument [Line Items]
Long-term debt, gross	$ 164	$ 186
Weighted-average interest rate	0.92%	0.92%
Capital Holdings [Member] \| Debentures - fixed [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 17,865	$ 10,990
Weighted-average interest rate	2.99%	2.21%
Capital Holdings [Member] \| Debentures variable [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,200	$ 3,850
Weighted-average interest rate	4.14%	0.56%
Capital Holdings [Member] \| Debentures, related to NEE's equity units - fixed [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 6,500	$ 6,000
Weighted-average interest rate	2.28%	1.46%
Capital Holdings [Member] \| Junior subordinated debentures - primarily fixed [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 3,723	$ 3,723
Weighted-average interest rate	5.23%	4.54%
Capital Holdings [Member] \| Japanese yen denominated long-term debt - primarily variable
Debt Instrument [Line Items]
Long-term debt, gross	$ 506	$ 582
Weighted-average interest rate	0.73%	1.49%
Capital Holdings [Member] \| Australian dollar denominated long-term debt - fixed [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 338	$ 360
Weighted-average interest rate	2.20%	2.20%
NEET [Member] \| Other long-term debt - primarily fixed \| NEER [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,348	$ 1,151
Weighted-average interest rate	5.10%	2.69%

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Floating Rate Notes That Permit Individual Noteholders to Require Repayment Prior to Maturity

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Variable Rate Tax Exempt Bonds

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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