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SCHEDULE I - CONSOLIDATED SUMMARY OF INVESTMENTS, OTHER THAN INVESTMENTS IN RELATED PARTIES | 12 Months Ended
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Dec. 31, 2022
Consolidated Summary of Investments, Other than Investments in Related Parties [Abstract] |
Summary of Investments - Other than Investments in Related Parties Supplemental Schedule | LINCOLN NATIONAL CORPORATION SCHEDULE I – CONSOLIDATED SUMMARY OF INVESTMENTS – OTHER THAN INVESTMENTS IN RELATED PARTIES (in millions)
Column A |  | Column B |  | Column C |  | Column D |
|  | As of December 31, 2022 |
|  |  |  | Fair |  | Carrying |
Type of Investment |  | Cost |  | Value |  | Value |
Fixed Maturity Available-For-Sale Securities (1) |  |  |  |  |  |  |  |  |  |
Bonds: |  |  |  |  |  |  |  |  |  |
U.S. government bonds |  | $ | 405 |  | $ | 379 |  | $ | 379 |
Foreign government bonds |  |  | 348 |  |  | 318 |  |  | 318 |
State and municipal bonds |  |  | 5,410 |  |  | 5,070 |  |  | 5,070 |
Public utilities |  |  | 14,204 |  |  | 12,493 |  |  | 12,493 |
All other corporate bonds |  |  | 75,045 |  |  | 66,530 |  |  | 66,530 |
Mortgage-backed and asset-backed securities |  |  | 15,930 |  |  | 14,587 |  |  | 14,587 |
Hybrid and redeemable preferred securities |  |  | 365 |  |  | 359 |  |  | 359 |
Total fixed maturity available-for-sale securities |  |  | 111,707 |  |  | 99,736 |  |  | 99,736 |
Equity Securities |  |  |  |  |  |  |  |  |  |
Common stocks: |  |  |  |  |  |  |  |  |  |
Banks, trusts and insurance companies |  |  | 48 |  |  | 47 |  |  | 47 |
Industrial, miscellaneous and all other |  |  | 50 |  |  | 146 |  |  | 146 |
Non-redeemable preferred securities |  |  | 285 |  |  | 234 |  |  | 234 |
Total equity securities |  |  | 383 |  |  | 427 |  |  | 427 |
Trading securities |  |  | 3,833 |  |  | 3,498 |  |  | 3,498 |
Mortgage loans on real estate (2) |  |  | 18,427 |  |  | 16,553 |  |  | 18,301 |
Policy loans |  |  | 2,359 |  |  | N/A |  |  | 2,359 |
Derivative investments |  |  | 1,869 |  |  | 3,594 |  |  | 3,594 |
Other investments |  |  | 3,739 |  |  | 3,739 |  |  | 3,739 |
Total investments |  | $ | 142,317 |  |  |  |  | $ | 131,654 |
(1)For investments deemed to have declines in value that are impairment-related, an allowance for credit losses is recorded to reduce the carrying value to their estimated realizable value. (2)Mortgage loans on real estate are generally carried at unpaid principal balances adjusted for amortization of premiums and accretion of discounts and are net of allowance for credit losses. We carry certain mortgage loans at fair value where the fair value option has been elected.

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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 -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 15 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010 + Details
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