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Leases (Operating Lease Maturities) (Details) $ in Millions	Dec. 31, 2025 USD ($)
Lessee, Operating Lease, Liability, Payment, Due
2026	$ 289
2027	239
2028	200
2029	171
2030	136
Thereafter	539
Total operating lease payments	1,574
Less: Present value discount	(303)
Total operating lease liabilities	1,271
Duke Energy Carolinas
Lessee, Operating Lease, Liability, Payment, Due
2026	24
2027	18
2028	15
2029	12
2030	9
Thereafter	44
Total operating lease payments	122
Less: Present value discount	(23)
Total operating lease liabilities	99
Progress Energy
Lessee, Operating Lease, Liability, Payment, Due
2026	126
2027	98
2028	83
2029	81
2030	73
Thereafter	368
Total operating lease payments	829
Less: Present value discount	(177)
Total operating lease liabilities	652
Duke Energy Progress
Lessee, Operating Lease, Liability, Payment, Due
2026	61
2027	61
2028	60
2029	59
2030	59
Thereafter	231
Total operating lease payments	531
Less: Present value discount	(104)
Total operating lease liabilities	427
Duke Energy Florida
Lessee, Operating Lease, Liability, Payment, Due
2026	65
2027	37
2028	23
2029	22
2030	14
Thereafter	137
Total operating lease payments	298
Less: Present value discount	(73)
Total operating lease liabilities	225
Duke Energy Ohio
Lessee, Operating Lease, Liability, Payment, Due
2026	1
2027	1
2028	1
2029	0
2030	0
Thereafter	3
Total operating lease payments	6
Less: Present value discount	(1)
Total operating lease liabilities	5
Duke Energy Indiana
Lessee, Operating Lease, Liability, Payment, Due
2026	7
2027	6
2028	4
2029	4
2030	3
Thereafter	17
Total operating lease payments	41
Less: Present value discount	(7)
Total operating lease liabilities	34
Piedmont
Lessee, Operating Lease, Liability, Payment, Due
2026	1
2027	1
2028	1
2029	0
2030	0
Thereafter	0
Total operating lease payments	3
Less: Present value discount	0
Total operating lease liabilities	$ 3

X

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 45
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