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Schedule I - Summary of Investments - Other Than Investments in Related Parties | 12 Months Ended
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Dec. 31, 2024
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract] |
Schedule I - Summary of Investments- Other than Investments in Related Parties | SCHEDULE I SELECTIVE INSURANCE GROUP, INC. AND CONSOLIDATED SUBSIDIARIES SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES December 31, 2024
Types of investment |  |  |  |  |  |
($ in thousands) |  | Amortized Cost or Cost |  | Fair Value |  | Carrying Amount
Fixed income securities: |  |  |  |  |  |
Held-to-maturity: |  |  |  |  |  |
All other corporate securities |  | $ | 25,375 |  |  | 24,735 |  |  | 25,375 |
Total fixed income securities, held-to-maturity |  | 25,375 |  |  | 24,735 |  |  | 25,375 |
Available-for-sale: |  |  |  |  |  |
U.S. government and government agencies |  | 139,906 |  |  | 120,155 |  |  | 120,155 |
Foreign government |  | 10,656 |  |  | 9,302 |  |  | 9,302 |
Obligations of states and political subdivisions |  | 483,609 |  |  | 451,230 |  |  | 451,230 |
Public utilities |  | 229,834 |  |  | 221,386 |  |  | 221,386 |
All other corporate securities |  | 2,951,212 |  |  | 2,846,794 |  |  | 2,846,794 |
Collateralized loan obligation securities and other asset-backed securities |  | 2,065,611 |  |  | 2,033,149 |  |  | 2,033,149 |
Residential mortgage-backed securities |  | 1,812,744 |  |  | 1,692,358 |  |  | 1,692,358 |
Commercial mortgage-backed securities |  | 782,506 |  |  | 752,960 |  |  | 752,960 |
Total fixed income securities, available-for-sale |  | 8,476,078 |  |  | 8,127,334 |  |  | 8,127,334 |
Equity securities: |  |  |  |  |  |
Common stock: |  |  |  |  |  |
Banks, trusts and insurance companies |  | 34,781 |  |  | 33,262 |  |  | 33,262 |
Industrial, miscellaneous and all other |  | 174,745 |  |  | 178,505 |  |  | 178,505 |
Nonredeemable preferred stock |  | 1,960 |  |  | 1,834 |  |  | 1,834 |
Total equity securities |  | 211,486 |  |  | 213,601 |  |  | 213,601 |
Commercial mortgage loans |  | 233,774 |  |  |  |  | 233,708 |
Short-term investments |  | 509,328 |  |  |  |  | 509,318 |
Alternative investments |  | 440,896 |  |  |  |  | 440,896 |
Other investments |  | 101,065 |  |  |  |  | 101,065 |
Total investments |  | $ | 9,998,002 |  |  |  |  | 9,651,297 |
See accompanying Report of Independent Registered Public Accounting Firm in Item 8. "Financial Statements and Supplementary Data." of this Form 10-K

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- Definition The entire disclosure of information about investment held by insurance company, excluding investment in related party. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 15 -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-7 + Details
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