Variable Interest Entities (Consolidated VIEs) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Regulatory Assets: Current	$ 3,485	$ 2,150
Current Assets: Other	1,067	584
Other Assets, Noncurrent	3,400	3,632
Other Noncurrent Assets: Regulatory assets	14,645	12,487
Current Liabilities: Other	2,167	2,423
Current maturities of long-term debt	4,154	3,387
Long-Term Debt	67,061	60,448
Duke Energy Florida
Variable Interest Entity [Line Items]
Regulatory Assets: Current	1,143	497
Current Assets: Other	108	80
Other Assets, Noncurrent	372	399
Other Noncurrent Assets: Regulatory assets	2,422	1,791
Current Liabilities: Other	363	408
Current maturities of long-term debt	328	76
Long-Term Debt	9,381	8,406
Duke Energy Carolinas
Variable Interest Entity [Line Items]
Regulatory Assets: Current	1,095	544
Current Assets: Other	216	95
Other Assets, Noncurrent	1,036	1,248
Other Noncurrent Assets: Regulatory assets	4,293	2,935
Current Liabilities: Other	580	546
Current maturities of long-term debt	1,018	362
Long-Term Debt	12,948	12,595
Duke Energy Progress
Variable Interest Entity [Line Items]
Regulatory Assets: Current	690	533
Current Assets: Other	174	83
Other Assets, Noncurrent	650	792
Other Noncurrent Assets: Regulatory assets	4,724	4,118
Current Liabilities: Other	384	448
Current maturities of long-term debt	369	556
Long-Term Debt	10,568	9,543
DEFPF | Duke Energy Florida | Consolidated VIEs
Variable Interest Entity [Line Items]
Receivables of VIEs	6	5
Regulatory Assets: Current	55	54
Current Assets: Other	41	39
Other Noncurrent Assets: Regulatory assets	826	883
Current Liabilities: Other	9	9
Current maturities of long-term debt	56	56
Long-Term Debt	890	946
DECNCSF | Duke Energy Carolinas | Consolidated VIEs
Variable Interest Entity [Line Items]
Regulatory Assets: Current	12	12
Current Assets: Other	8
Other Assets, Noncurrent	1	1
Other Noncurrent Assets: Regulatory assets	208	220
Current Liabilities: Other	3	1
Current maturities of long-term debt	10	5
Long-Term Debt	219	228
DEPNCSF | Duke Energy Progress | Consolidated VIEs
Variable Interest Entity [Line Items]
Regulatory Assets: Current	39	39
Current Assets: Other	29
Other Assets, Noncurrent	2	4
Other Noncurrent Assets: Regulatory assets	681	720
Current Liabilities: Other	8	2
Current maturities of long-term debt	34	15
Long-Term Debt	$ 714	$ 747