Employee Benefit Plans (Expected Benefit Payments) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Pension Plan \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	$ 661
2024	635
2025	629
2026	607
2027	592
2028-2032	2,581
Pension Plan \| Duke Energy Carolinas \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	186
2024	176
2025	174
2026	164
2027	156
2028-2032	628
Pension Plan \| Progress Energy \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	183
2024	180
2025	183
2026	180
2027	177
2028-2032	804
Pension Plan \| Duke Energy Progress \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	99
2024	95
2025	97
2026	91
2027	89
2028-2032	372
Pension Plan \| Duke Energy Florida \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	83
2024	84
2025	85
2026	87
2027	87
2028-2032	427
Pension Plan \| Duke Energy Ohio \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	32
2024	31
2025	31
2026	30
2027	29
2028-2032	135
Pension Plan \| Duke Energy Indiana \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	45
2024	45
2025	44
2026	44
2027	43
2028-2032	205
Pension Plan \| Piedmont \| Qualified Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	19
2024	18
2025	16
2026	16
2027	15
2028-2032	71
Other Post-Retirement Benefit Plans
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	68
2024	49
2025	45
2026	41
2027	38
2028-2032	158
Other Post-Retirement Benefit Plans \| Duke Energy Carolinas
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	16
2024	13
2025	12
2026	11
2027	10
2028-2032	41
Other Post-Retirement Benefit Plans \| Progress Energy
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	25
2024	18
2025	16
2026	15
2027	14
2028-2032	61
Other Post-Retirement Benefit Plans \| Duke Energy Progress
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	14
2024	10
2025	9
2026	9
2027	8
2028-2032	36
Other Post-Retirement Benefit Plans \| Duke Energy Florida
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	11
2024	7
2025	7
2026	6
2027	6
2028-2032	25
Other Post-Retirement Benefit Plans \| Duke Energy Ohio
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	3
2024	3
2025	2
2026	2
2027	2
2028-2032	8
Other Post-Retirement Benefit Plans \| Duke Energy Indiana
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	7
2024	4
2025	3
2026	3
2027	3
2028-2032	9
Other Post-Retirement Benefit Plans \| Piedmont
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2023	2
2024	2
2025	2
2026	2
2027	2
2028-2032	$ 9

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Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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