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v3.25.2

Investments in Debt and Equity Securities (Maturities) (Details) $ in Millions | Jun. 30, 2025 USD ($)
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Debt Securities, Available-for-sale [Line Items] |
Due in one year or less | $ 87
Due after one through five years | 896
Due after five through 10 years | 695
Due after 10 years | 1,887
Total | 3,565
Duke Energy Carolinas |
Debt Securities, Available-for-sale [Line Items] |
Due in one year or less | 5
Due after one through five years | 397
Due after five through 10 years | 360
Due after 10 years | 1,074
Total | 1,836
Progress Energy |
Debt Securities, Available-for-sale [Line Items] |
Due in one year or less | 79
Due after one through five years | 438
Due after five through 10 years | 285
Due after 10 years | 712
Total | 1,514
Duke Energy Progress |
Debt Securities, Available-for-sale [Line Items] |
Due in one year or less | 17
Due after one through five years | 375
Due after five through 10 years | 268
Due after 10 years | 664
Total | 1,324
Duke Energy Florida |
Debt Securities, Available-for-sale [Line Items] |
Due in one year or less | 62
Due after one through five years | 63
Due after five through 10 years | 17
Due after 10 years | 48
Total | 190
Duke Energy Indiana |
Debt Securities, Available-for-sale [Line Items] |
Due in one year or less | 1
Due after one through five years | 8
Due after five through 10 years | 6
Due after 10 years | 11
Total | $ 26

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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477268/942-320-50-3A + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477268/942-320-50-3A + Details
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