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Investments (Tables) | 9 Months Ended
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Sep. 30, 2023
Investments [Abstract] |
Debt Securities, Available-for-sale | The following tables provide information relating to investments in fixed maturity securities by type as of September 30, 2023 and December 31, 2022 (dollars in millions):
September 30, 2023: |  | Amortized |  | Allowance for |  | Unrealized |  | Unrealized |  | Estimated Fair |  | % of |  |
|  | Cost |  | Credit Losses |  | Gains |  | Losses |  | Value |  | Total |  |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate |  | $ | 41,463 |  |  | $ | 55 |  |  | $ | 170 |  |  | $ | 6,075 |  |  | $ | 35,503 |  |  | 65.5 | % |  |
Canadian government |  | 3,336 |  |  | — |  |  | 169 |  |  | 157 |  |  | 3,348 |  |  | 6.2 |  |  |
Japanese government |  | 3,205 |  |  | — |  |  | 3 |  |  | 493 |  |  | 2,715 |  |  | 5.0 |  |  |
ABS |  | 4,562 |  |  | 12 |  |  | 16 |  |  | 330 |  |  | 4,236 |  |  | 7.8 |  |  |
CMBS |  | 1,959 |  |  | 1 |  |  | 2 |  |  | 250 |  |  | 1,710 |  |  | 3.2 |  |  |
RMBS |  | 1,172 |  |  | — |  |  | 3 |  |  | 145 |  |  | 1,030 |  |  | 1.9 |  |  |
U.S. government |  | 1,346 |  |  | — |  |  | — |  |  | 286 |  |  | 1,060 |  |  | 2.0 |  |  |
State and political subdivisions |  | 1,242 |  |  | — |  |  | 4 |  |  | 199 |  |  | 1,047 |  |  | 1.9 |  |  |
Other foreign government |  | 4,047 |  |  | — |  |  | 23 |  |  | 548 |  |  | 3,522 |  |  | 6.5 |  |  |
Total fixed maturity securities |  | $ | 62,332 |  |  | $ | 68 |  |  | $ | 390 |  |  | $ | 8,483 |  |  | $ | 54,171 |  |  | 100.0 | % |  |
December 31, 2022: |  | Amortized |  | Allowance for |  | Unrealized |  | Unrealized |  | Estimated Fair |  | % of
|  | Cost |  | Credit Losses |  | Gains |  | Losses |  | Value |  | Total
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |
Corporate |  | $ | 38,963 |  |  | $ | 27 |  |  | $ | 168 |  |  | $ | 5,135 |  |  | $ | 33,969 |  |  | 64.2 | %
Canadian government |  | 3,311 |  |  | — |  |  | 381 |  |  | 66 |  |  | 3,626 |  |  | 6.9 |
Japanese government |  | 3,033 |  |  | — |  |  | 4 |  |  | 478 |  |  | 2,559 |  |  | 4.8 |
ABS |  | 4,324 |  |  | 10 |  |  | 4 |  |  | 440 |  |  | 3,878 |  |  | 7.3 |
CMBS |  | 1,835 |  |  | — |  |  | — |  |  | 212 |  |  | 1,623 |  |  | 3.1 |
RMBS |  | 1,054 |  |  | — |  |  | 1 |  |  | 114 |  |  | 941 |  |  | 1.8 |
U.S. government |  | 1,690 |  |  | — |  |  | 4 |  |  | 212 |  |  | 1,482 |  |  | 2.8 |
State and political subdivisions |  | 1,282 |  |  | — |  |  | 10 |  |  | 173 |  |  | 1,119 |  |  | 2.1 |
Other foreign government |  | 4,171 |  |  | — |  |  | 22 |  |  | 489 |  |  | 3,704 |  |  | 7.0 |
Total fixed maturity securities |  | $ | 59,663 |  |  | $ | 37 |  |  | $ | 594 |  |  | $ | 7,319 |  |  | $ | 52,901 |  |  | 100.0 | %
Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] | The following table includes fixed maturity securities pledged and received as collateral and assets in trust held to satisfy collateral requirements under derivative transactions and certain third-party reinsurance treaties as of September 30, 2023 and December 31, 2022 (dollars in millions):
| September 30, 2023 |  | December 31, 2022
| Amortized Cost |  | Estimated Fair Value |  | Amortized Cost |  | Estimated Fair Value
Fixed maturity securities pledged as collateral | $ | 588 |  |  | $ | 488 |  |  | $ | 355 |  |  | $ | 292 |
Fixed maturity securities received as collateral | n/a |  | $ | 1,625 |  |  | n/a |  | $ | 1,428 |
Assets in trust held to satisfy collateral requirements | $ | 32,645 |  |  | $ | 28,354 |  |  | $ | 31,510 |  |  | $ | 27,817 |
Concentration Risk Disclosure [Text Block] | The Company’s exposure to concentrations of credit risk from single issuers greater than 10% of the Company’s equity included securities of the U.S. government and its agencies and the Japanese government and its agencies, as well as the securities disclosed below, as of September 30, 2023 and December 31, 2022 (dollars in millions).
| September 30, 2023 |  | December 31, 2022
| Amortized Cost |  | Estimated Fair Value |  | Amortized Cost |  | Estimated Fair Value
Fixed maturity securities guaranteed or issued by: |  |  |  |  |  |  |
Canadian province of Quebec | $ | 1,415 |  |  | $ | 1,465 |  |  | $ | 1,436 |  |  | $ | 1,649 |
Canadian province of Ontario | 1,001 |  |  | 1,014 |  |  | 982 |  |  | 1,068 |
Investments Classified By Contractual Maturity Date | The amortized cost and estimated fair value of fixed maturity securities classified as available-for-sale as of September 30, 2023, are shown by contractual maturity in the table below (dollars in millions). Actual maturities can differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Structured securities are shown separately in the table below, as they are not due at a single maturity date.
|  | Amortized Cost |  | Estimated Fair Value
Available-for-sale: |  |  |  |
Due in one year or less |  | $ | 1,623 |  |  | $ | 1,628 |
Due after one year through five years |  | 10,151 |  |  | 9,779 |
Due after five years through ten years |  | 11,183 |  |  | 9,987 |
Due after ten years |  | 31,682 |  |  | 25,801 |
Structured securities |  | 7,693 |  |  | 6,976 |
Total |  | $ | 62,332 |  |  | $ | 54,171 |
Fixed Maturity Holdings Industry Types Weighted Average Credit Ratings [Table Text Block] | The tables below show the major sectors of the Company’s corporate fixed maturity holdings as of September 30, 2023 and December 31, 2022 (dollars in millions):
September 30, 2023: |  |  |  | Estimated |  |
|  | Amortized Cost |  | Fair Value |  | % of Total
Finance |  | $ | 15,022 |  |  | $ | 12,842 |  |  | 36.1 | %
Industrial |  | 21,062 |  |  | 18,232 |  |  | 51.4 |
Utility |  | 5,379 |  |  | 4,429 |  |  | 12.5 |
Total |  | $ | 41,463 |  |  | $ | 35,503 |  |  | 100.0 | %
December 31, 2022: |  |  |  | Estimated |  |
|  | Amortized Cost |  | Fair Value |  | % of Total
Finance |  | $ | 14,551 |  |  | $ | 12,680 |  |  | 37.3 | %
Industrial |  | 19,624 |  |  | 17,257 |  |  | 50.8 |
Utility |  | 4,788 |  |  | 4,032 |  |  | 11.9 |
Total |  | $ | 38,963 |  |  | $ | 33,969 |  |  | 100.0 | %
Financing Receivable, Allowance for Credit Loss [Table Text Block] | The following tables present the rollforward of the allowance for credit losses in fixed maturity securities by type for the three and nine months ended September 30, 2023 and 2022 (dollars in millions):
| Corporate |  | ABS |  | CMBS |  | Other Foreign Government |  | Total |  |
Three months ended September 30, 2023: |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period | $ | 62 |  |  | $ | 12 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 75 |  |  |
Additional increases or decreases for credit losses on securities that had an allowance recorded in a previous period | (1) |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  |
Write-offs charged against the allowance | (6) |  |  | — |  |  | — |  |  | — |  |  | (6) |  |  |
Balance, end of period | $ | 55 |  |  | $ | 12 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 68 |  |  |
Three months ended September 30, 2022: |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period | $ | 43 |  |  | $ | 5 |  |  | $ | 1 |  |  | $ | 6 |  |  | $ | 55 |  |  |
Credit losses recognized on securities for which credit losses were not previously recorded | 8 |  |  | (1) |  |  | — |  |  | — |  |  | 7 |  |  |
Reductions for securities sold during the period | (3) |  |  | — |  |  | — |  |  | (2) |  |  | (5) |  |  |
Reductions for securities the Company intends to sell or more likely than not will be required to sell before recovery of its amortized cost | (4) |  |  | — |  |  | — |  |  | — |  |  | (4) |  |  |
Additional increases or decreases for credit losses on securities that had an allowance recorded in a previous period | (1) |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  |
Balance, end of period | $ | 43 |  |  | $ | 4 |  |  | $ | 1 |  |  | $ | 4 |  |  | $ | 52 |  |  |
| Corporate |  | ABS |  | CMBS |  | Other Foreign Government |  |  |  | Total
Nine months ended September 30, 2023: |
Balance, beginning of year | $ | 27 |  |  | $ | 10 |  |  | $ | — |  |  | $ | — |  |  |  |  | $ | 37 |
Credit losses recognized on securities for which credit losses were not previously recorded | 44 |  |  | — |  |  | 1 |  |  | — |  |  |  |  | 45 |
Reductions for securities sold during the period | (10) |  |  | — |  |  | — |  |  | — |  |  |  |  | (10) |
Additional increases or decreases for credit losses on securities that had an allowance recorded in a previous period | — |  |  | 2 |  |  | — |  |  | — |  |  |  |  | 2 |
Write-offs charged against the allowance | (6) |  |  | — |  |  | — |  |  | — |  |  |  |  | (6) |
Balance, end of period | $ | 55 |  |  | $ | 12 |  |  | $ | 1 |  |  | $ | — |  |  |  |  | $ | 68 |
Nine months ended September 30, 2022: |
Balance, beginning of year | $ | 26 |  |  | $ | — |  |  | $ | 1 |  |  | $ | 4 |  |  |  |  | $ | 31 |
Credit losses recognized on securities for which credit losses were not previously recorded | 26 |  |  | 4 |  |  | — |  |  | 1 |  |  |  |  | 31 |
Reductions for securities sold during the period | (9) |  |  | — |  |  | — |  |  | (3) |  |  |  |  | (12) |
Reductions for securities the Company intends to sell or more likely than not will be required to sell before recovery of its amortized cost | (4) |  |  | — |  |  | — |  |  | — |  |  |  |  | (4) |
Additional increases or decreases for credit losses on securities that had an allowance recorded in a previous period | 4 |  |  | — |  |  | — |  |  | 2 |  |  |  |  | 6 |
Balance, end of period | $ | 43 |  |  | $ | 4 |  |  | $ | 1 |  |  | $ | 4 |  |  |  |  | $ | 52 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value |
|  | Less than 12 months |  | 12 months or greater |  | Total
|  |  |  | Gross |  |  |  | Gross |  |  |  | Gross
September 30, 2023: |  | Estimated |  | Unrealized |  | Estimated |  | Unrealized |  | Estimated |  | Unrealized
|  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
Investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |
Corporate |  | $ | 7,272 |  |  | $ | 516 |  |  | $ | 23,093 |  |  | $ | 5,395 |  |  | $ | 30,365 |  |  | $ | 5,911 |
Canadian government |  | 1,303 |  |  | 105 |  |  | 250 |  |  | 52 |  |  | 1,553 |  |  | 157 |
Japanese government |  | 614 |  |  | 50 |  |  | 2,055 |  |  | 443 |  |  | 2,669 |  |  | 493 |
ABS |  | 471 |  |  | 18 |  |  | 3,071 |  |  | 299 |  |  | 3,542 |  |  | 317 |
CMBS |  | 273 |  |  | 12 |  |  | 1,358 |  |  | 232 |  |  | 1,631 |  |  | 244 |
RMBS |  | 295 |  |  | 14 |  |  | 641 |  |  | 131 |  |  | 936 |  |  | 145 |
U.S. government |  | 488 |  |  | 28 |  |  | 559 |  |  | 258 |  |  | 1,047 |  |  | 286 |
State and political subdivisions |  | 120 |  |  | 8 |  |  | 807 |  |  | 191 |  |  | 927 |  |  | 199 |
Other foreign government |  | 686 |  |  | 29 |  |  | 2,194 |  |  | 451 |  |  | 2,880 |  |  | 480 |
Total investment grade securities |  | 11,522 |  |  | 780 |  |  | 34,028 |  |  | 7,452 |  |  | 45,550 |  |  | 8,232 |
Below investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |
Corporate |  | 357 |  |  | 70 |  |  | 732 |  |  | 93 |  |  | 1,089 |  |  | 163 |
ABS |  | — |  |  | — |  |  | 67 |  |  | 11 |  |  | 67 |  |  | 11 |
CMBS |  | — |  |  | — |  |  | 2 |  |  | 1 |  |  | 2 |  |  | 1 |
Other foreign government |  | 4 |  |  | 1 |  |  | 184 |  |  | 67 |  |  | 188 |  |  | 68 |
Total below investment grade securities |  | 361 |  |  | 71 |  |  | 985 |  |  | 172 |  |  | 1,346 |  |  | 243 |
Total fixed maturity securities |  | $ | 11,883 |  |  | $ | 851 |  |  | $ | 35,013 |  |  | $ | 7,624 |  |  | $ | 46,896 |  |  | $ | 8,475 |
|  | Less than 12 months |  | 12 months or greater |  | Total
|  |  |  | Gross |  |  |  | Gross |  |  |  | Gross
December 31, 2022: |  | Estimated |  | Unrealized |  | Estimated |  | Unrealized |  | Estimated |  | Unrealized
|  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
Investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |
Corporate |  | $ | 21,867 |  |  | $ | 2,756 |  |  | $ | 6,840 |  |  | $ | 2,225 |  |  | $ | 28,707 |  |  | $ | 4,981 |
Canadian government |  | 554 |  |  | 42 |  |  | 71 |  |  | 23 |  |  | 625 |  |  | 65 |
Japanese government |  | 815 |  |  | 86 |  |  | 1,694 |  |  | 392 |  |  | 2,509 |  |  | 478 |
ABS |  | 1,596 |  |  | 153 |  |  | 1,931 |  |  | 269 |  |  | 3,527 |  |  | 422 |
CMBS |  | 1,314 |  |  | 144 |  |  | 281 |  |  | 65 |  |  | 1,595 |  |  | 209 |
RMBS |  | 664 |  |  | 62 |  |  | 181 |  |  | 53 |  |  | 845 |  |  | 115 |
U.S. government |  | 1,202 |  |  | 64 |  |  | 253 |  |  | 148 |  |  | 1,455 |  |  | 212 |
State and political subdivisions |  | 819 |  |  | 124 |  |  | 131 |  |  | 50 |  |  | 950 |  |  | 174 |
Other foreign government |  | 1,942 |  |  | 167 |  |  | 1,026 |  |  | 260 |  |  | 2,968 |  |  | 427 |
Total investment grade securities |  | 30,773 |  |  | 3,598 |  |  | 12,408 |  |  | 3,485 |  |  | 43,181 |  |  | 7,083 |
Below investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |
Corporate |  | 767 |  |  | 87 |  |  | 305 |  |  | 61 |  |  | 1,072 |  |  | 148 |
ABS |  | 52 |  |  | 6 |  |  | 38 |  |  | 9 |  |  | 90 |  |  | 15 |
Other foreign government |  | 39 |  |  | 2 |  |  | 164 |  |  | 60 |  |  | 203 |  |  | 62 |
Total below investment grade securities |  | 858 |  |  | 95 |  |  | 507 |  |  | 130 |  |  | 1,365 |  |  | 225 |
Total fixed maturity securities |  | $ | 31,631 |  |  | $ | 3,693 |  |  | $ | 12,915 |  |  | $ | 3,615 |  |  | $ | 44,546 |  |  | $ | 7,308 |
Investment Income | Major categories of net investment income consist of the following (dollars in millions):
|  | Three months ended September 30, |  | Nine months ended September 30,
|  | 2023 |  | 2022 |  | 2023 |  | 2022
Fixed maturity securities available-for-sale |  | $ | 707 |  |  | $ | 591 |  |  | $ | 2,035 |  |  | $ | 1,683 |
Equity securities |  | 2 |  | 2 |  |  | 5 |  |  | 5 |
Mortgage loans |  | 84 |  |  | 74 |  |  | 238 |  |  | 223 |
Policy loans |  | 13 |  |  | 13 |  |  | 39 |  |  | 40 |
Funds withheld at interest |  | 88 |  |  | 67 |  |  | 240 |  |  | 175 |
Limited partnerships and real estate joint ventures |  | 41 |  |  | 43 |  |  | 114 |  |  | 281 |
Short-term investments and cash and cash equivalents |  | 28 |  |  | 7 |  |  | 71 |  |  | 11 |
Other invested assets |  | 2 |  |  | 3 |  |  | 14 |  |  | 5 |
Investment income |  | 965 |  |  | 800 |  |  | 2,756 |  |  | 2,423 |
Investment expense |  | (43) |  |  | (31) |  |  | (121) |  |  | (90) |
Net investment income |  | $ | 922 |  |  | $ | 769 |  |  | $ | 2,635 |  |  | $ | 2,333 |
Gain Loss On Investments | Investment related gains (losses), net consist of the following (dollars in millions):
| Three months ended September 30, |  | Nine months ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Fixed maturity securities available-for-sale: |  |  |  |  |  |  |
Change in allowance for credit losses | $ | 7 |  |  | $ | 3 |  |  | $ | (31) |  |  | $ | (21) |
Impairments on fixed maturities | — |  |  | (12) |  |  | (1) |  |  | (15) |
Realized gains on investment activity | 12 |  |  | 20 |  |  | 54 |  |  | 65 |
Realized losses on investment activity | (61) |  |  | (106) |  |  | (173) |  |  | (236) |
Net gains (losses) on equity securities | (2) |  |  | 7 |  |  | (4) |  |  | (16) |
Change in mortgage loan allowance for credit losses | (17) |  |  | (5) |  |  | (23) |  |  | (8) |
Change in fair value of certain limited partnership investments | 25 |  |  | — |  |  | 32 |  |  | 29 |
Other, net | 7 |  |  | 7 |  |  | 24 |  |  | 26 |
Net losses on free-standing derivatives | (98) |  |  | (51) |  |  | (222) |  |  | (251) |
Net gains (losses) on embedded derivatives | 1 |  |  | (17) |  |  | 18 |  |  | (106) |
Total investment related gains (losses), net | $ | (126) |  |  | $ | (154) |  |  | $ | (326) |  |  | $ | (533) |
Schedule of Repurchase Agreements [Table Text Block] | The following table provides information relating to securities borrowing, lending and repurchase/reverse repurchase agreements as of September 30, 2023 and December 31, 2022 (dollars in millions):
| September 30, 2023 |  | December 31, 2022
| Amortized Cost |  | Estimated Fair Value |  | Amortized Cost |  | Estimated Fair Value
Securities borrowing agreements: |  |  |  |  |  |  |
Securities borrowed (1) | n/a |  | $ | 776 |  |  | n/a |  | $ | 852 |
Securities pledged as collateral (2) | $ | 762 |  |  | $ | 603 |  |  | $ | 859 |  |  | $ | 693 |
Securities lending agreements: |  |  |  |  |  |  |
Securities loaned (2) | $ | 60 |  |  | $ | 53 |  |  | $ | 59 |  |  | $ | 55 |
Securities received as collateral (3) | n/a |  | $ | 66 |  |  | n/a |  | $ | 66 |
Repurchase/reverse repurchase agreements: |  |  |  |  |  |  |
Securities sold (2) | $ | 1,344 |  |  | $ | 1,187 |  |  | $ | 898 |  |  | $ | 779 |
Securities purchased (3) | n/a |  | $ | 496 |  |  | n/a |  | $ | 619 |
Cash received (4) | $ | 551 |  |  | $ | 551 |  |  | $ | 149 |  |  | $ | 149 |
(1)Securities borrowed are not reflected on the condensed consolidated balance sheets. Collateral associated with certain borrowed securities is not included within this table as the collateral pledged to the counterparty is the right to reinsurance treaty cash flows. (2)Securities loaned, pledged or sold to counterparties are included within fixed maturity securities. (3)Securities received as collateral or purchased from counterparties are not reflected on the condensed consolidated financial statements. (4)A payable for the cash received by the Company is included within other liabilities.
Schedule of Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets [Table Text Block] | The following tables present information on the remaining contractual maturity of the Company’s securities lending and repurchase agreements as of September 30, 2023 and December 31, 2022 (dollars in millions):
| September 30, 2023
| Remaining Contractual Maturity of the Agreements
| Overnight and Continuous |  | Up to 30 Days |  | 30 – 90 Days |  | Greater than 90 Days |  | Total
Securities lending agreements: |  |  |  |  |  |  |  |  |
Corporate | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 37 |  |  | $ | 37 |
Canadian government | — |  |  | — |  |  | — |  |  | — |  |  | — |
State and political subdivisions | — |  |  | — |  |  | — |  |  | 11 |  |  | 11 |
Other foreign government | — |  |  | — |  |  | — |  |  | 5 |  |  | 5 |
Total | — |  |  | — |  |  | — |  |  | 53 |  |  | 53 |
Repurchase agreements: |  |  |  |  |  |  |  |  |
Corporate | — |  |  | — |  |  | — |  |  | 339 |  |  | 339 |
Japanese government | — |  |  | — |  |  | — |  |  | 138 |  |  | 138 |
ABS | — |  |  | — |  |  | 53 |  |  | 171 |  |  | 224 |
CMBS | — |  |  | — |  |  | 59 |  |  | 162 |  |  | 221 |
RMBS | — |  |  | — |  |  | 8 |  |  | 144 |  |  | 152 |
U.S. government | — |  |  | — |  |  | — |  |  | 13 |  |  | 13 |
Other foreign government | — |  |  | — |  |  | — |  |  | 100 |  |  | 100 |
Total | — |  |  | — |  |  | 120 |  |  | 1,067 |  |  | 1,187 |
Total agreements | $ | — |  |  | $ | — |  |  | $ | 120 |  |  | $ | 1,120 |  |  | $ | 1,240 |
| December 31, 2022
| Remaining Contractual Maturity of the Agreements
| Overnight and Continuous |  | Up to 30 Days |  | 30 – 90 Days |  | Greater than 90 Days |  | Total
Securities lending agreements: |  |  |  |  |  |  |  |  |
Corporate | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 42 |  |  | $ | 42 |
Canadian government | — |  |  | — |  |  | — |  |  | 5 |  |  | 5 |
State and political subdivisions | — |  |  | — |  |  | — |  |  | 3 |  |  | 3 |
Other foreign government | — |  |  | — |  |  | — |  |  | 5 |  |  | 5 |
Total | — |  |  | — |  |  | — |  |  | 55 |  |  | 55 |
Repurchase agreements: |  |  |  |  |  |  |  |  |
Corporate | — |  |  | — |  |  | — |  |  | 279 |  |  | 279 |
Japanese government | — |  |  | — |  |  | — |  |  | 278 |  |  | 278 |
ABS | — |  |  | — |  |  | — |  |  | 54 |  |  | 54 |
CMBS | — |  |  | — |  |  | — |  |  | 63 |  |  | 63 |
RMBS | — |  |  | — |  |  | — |  |  | 10 |  |  | 10 |
Other foreign government | — |  |  | — |  |  | — |  |  | 95 |  |  | 95 |
Total | — |  |  | — |  |  | — |  |  | 779 |  |  | 779 |
Total agreements | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 834 |  |  | $ | 834 |
Disclosure Of Real Estate Holdings By Property Type [Table Text Block] | The following table presents the distribution of the Company’s recorded investment in mortgage loans by property type as of September 30, 2023 and December 31, 2022 (dollars in millions):
|  | September 30, 2023 |  | December 31, 2022
Property type: |  | Carrying Value |  | % of Total |  | Carrying Value |  | % of Total
Office |  | $ | 1,716 |  |  | 23.4 | % |  | $ | 1,706 |  |  | 25.6 | %
Retail |  | 2,445 |  |  | 33.4 |  |  | 2,290 |  |  | 34.4 |
Industrial |  | 1,820 |  |  | 24.9 |  |  | 1,518 |  |  | 22.8 |
Apartment |  | 870 |  |  | 11.9 |  |  | 763 |  |  | 11.5 |
Other commercial |  | 469 |  |  | 6.4 |  |  | 376 |  |  | 5.7 |
Recorded investment |  | 7,320 |  |  | 100.0 | % |  | 6,653 |  |  | 100.0 | %
Unamortized balance of loan origination fees and expenses |  | (15) |  |  |  |  | (12) |  |  |
Allowance for credit losses |  | (74) |  |  |  |  | (51) |  |  |
Total mortgage loans |  | $ | 7,231 |  |  |  |  | $ | 6,590 |  |  |
Mortgage Loans Classified By Contractual Maturity Date [Table Text Block] | The following table presents the maturities of the Company’s recorded investment in mortgage loans as of September 30, 2023 and December 31, 2022 (dollars in millions):
|  | September 30, 2023 |  | December 31, 2022
|  | Recorded Investment |  | % of Total |  | Recorded Investment |  | % of Total
Due within five years |  | $ | 3,150 |  |  | 42.9 | % |  | $ | 2,652 |  |  | 39.9 | %
Due after five years through ten years |  | 3,248 |  |  | 44.4 |  |  | 2,930 |  |  | 44.0 |
Due after ten years |  | 922 |  |  | 12.7 |  |  | 1,071 |  |  | 16.1 |
Total |  | $ | 7,320 |  |  | 100.0 | % |  | $ | 6,653 |  |  | 100.0 | %
Mortgage Loan Internal Credit Risk Grade [Table Text Block] | The following tables set forth certain key credit quality indicators of the Company’s recorded investment in mortgage loans as of September 30, 2023 and December 31, 2022 (dollars in millions):
| Recorded Investment
| Debt Service Ratios |  | Construction loans |  |  |  |
| >1.20x |  | 1.00x – 1.20x |  | <1.00x |  |  | Total |  | % of Total
September 30, 2023: |  |  |  |  |  |  |  |  |  |  |
Loan-to-Value Ratio |  |  |  |  |  |  |  |  |  |  |
0% – 59.99% | $ | 3,947 |  |  | $ | 301 |  |  | $ | 53 |  |  | $ | 45 |  |  | $ | 4,346 |  |  | 59.3 | %
60% – 69.99% | 1,929 |  |  | 154 |  |  | 29 |  |  | — |  |  | 2,112 |  |  | 28.9 |
70% – 79.99% | 518 |  |  | 35 |  |  | 33 |  |  | — |  |  | 586 |  |  | 8.0 |
80% or greater | 105 |  |  | 43 |  |  | 128 |  |  | — |  |  | 276 |  |  | 3.8 |
Total | $ | 6,499 |  |  | $ | 533 |  |  | $ | 243 |  |  | $ | 45 |  |  | $ | 7,320 |  |  | 100.0 | %
| Recorded Investment
| Debt Service Ratios |  | Construction loans |  |  |  |
| >1.20x |  | 1.00x – 1.20x |  | <1.00x |  |  | Total |  | % of Total
December 31, 2022: |  |  |  |  |  |  |  |  |  |  |
Loan-to-Value Ratio |  |  |  |  |  |  |  |  |  |  |
0% – 59.99% | $ | 3,466 |  |  | $ | 215 |  |  | $ | 56 |  |  | $ | 18 |  |  | $ | 3,755 |  |  | 56.4 | %
60% – 69.99% | 1,894 |  |  | 119 |  |  | 71 |  |  | — |  |  | 2,084 |  |  | 31.3 |
70% – 79.99% | 475 |  |  | 49 |  |  | 91 |  |  | — |  |  | 615 |  |  | 9.3 |
80% or greater | 81 |  |  | — |  |  | 118 |  |  | — |  |  | 199 |  |  | 3.0 |
Total | $ | 5,916 |  |  | $ | 383 |  |  | $ | 336 |  |  | $ | 18 |  |  | $ | 6,653 |  |  | 100.0 | %
The following table sets forth credit quality grades by year of origination of the Company’s recorded investment in mortgage loans as of September 30, 2023 and December 31, 2022 (dollars in millions):
| Recorded Investment
| Year of Origination |  |
| 2023 |  | 2022 |  | 2021 |  | 2020 |  | 2019 |  | Prior |  | Total
September 30, 2023: |  |  |  |  |  |  |  |  |  |  |  |  |
Internal credit quality grade: |  |  |  |  |  |  |  |  |  |  |  |  |
High investment grade | $ | 336 |  |  | $ | 686 |  |  | $ | 670 |  |  | $ | 334 |  |  | $ | 520 |  |  | $ | 1,851 |  |  | $ | 4,397 |
Investment grade | 599 |  |  | 615 |  |  | 281 |  |  | 219 |  |  | 326 |  |  | 608 |  |  | 2,648 |
Average | — |  |  | — |  |  | 6 |  |  | 18 |  |  | 23 |  |  | 200 |  |  | 247 |
In or near default | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 28 |  |  | 28 |
Total | $ | 935 |  |  | $ | 1,301 |  |  | $ | 957 |  |  | $ | 571 |  |  | $ | 869 |  |  | $ | 2,687 |  |  | $ | 7,320 |
| Recorded Investment
| Year of Origination |  |
| 2022 |  | 2021 |  | 2020 |  | 2019 |  | 2018 |  | Prior |  | Total
December 31, 2022: |  |  |  |  |  |  |  |  |  |  |  |  |
Internal credit quality grade: |  |  |  |  |  |  |  |  |  |  |  |  |
High investment grade | $ | 698 |  |  | $ | 684 |  |  | $ | 327 |  |  | $ | 561 |  |  | $ | 422 |  |  | $ | 1,565 |  |  | $ | 4,257 |
Investment grade | 586 |  |  | 284 |  |  | 248 |  |  | 279 |  |  | 252 |  |  | 531 |  |  | 2,180 |
Average | — |  |  | 6 |  |  | — |  |  | 39 |  |  | 52 |  |  | 83 |  |  | 180 |
In or near default | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 36 |  |  | 36 |
Total | $ | 1,284 |  |  | $ | 974 |  |  | $ | 575 |  |  | $ | 879 |  |  | $ | 726 |  |  | $ | 2,215 |  |  | $ | 6,653 |
Financing Receivable, Past Due [Table Text Block] | The following table presents the current and past due composition of the Company’s recorded investment in mortgage loans as of September 30, 2023 and December 31, 2022.
|  | September 30, 2023 |  | December 31, 2022
Current |  | $ | 7,292 |  |  | $ | 6,617 |
Greater than 90 days past due |  | 28 |  |  | 36 |
Total |  | $ | 7,320 |  |  | $ | 6,653 |
Allowance For Mortgage Loan And Lease Losses Provision For Loss Net | The following table presents information regarding the Company’s allowance for credit losses for mortgage loans for the three and nine months ended September 30, 2023 and 2022 (dollars in millions):
|  | Three months ended September 30, |  | Nine months ended September 30,
|  | 2023 |  | 2022 |  | 2023 |  | 2022
Balance, beginning of period |  | $ | 57 |  |  | $ | 38 |  |  | $ | 51 |  |  | $ | 35 |
Change in allowance for credit losses |  | 17 |  |  | 5 |  |  | 23 |  |  | 8 |
Balance, end of period |  | $ | 74 |  |  | $ | 43 |  |  | $ | 74 |  |  | $ | 43 |
Limited Partnership And Joint Ventures Table Text Block | Limited Partnerships and Real Estate Joint Ventures The carrying values of limited partnerships and real estate joint ventures as of September 30, 2023 and December 31, 2022 are as follows (dollars in millions):
|  | September 30, 2023 |  | December 31, 2022
Limited partnerships – equity method |  | $ | 930 |  |  | $ | 934 |
Limited partnerships – fair value |  | 818 |  |  | 683 |
Limited partnerships – cost method |  | 68 |  |  | 49 |
Real estate joint ventures |  | 744 |  | 661 |
Total limited partnerships and real estate joint ventures |  | $ | 2,560 |  |  | $ | 2,327 |
Schedule Of Other Invested Assets [Table Text Block] | The carrying values of other invested assets as of September 30, 2023 and December 31, 2022 are as follows (dollars in millions):
|  | September 30, 2023 |  | December 31, 2022
Lifetime mortgages |  | $ | 900 |  |  | $ | 868 |
Derivatives |  | 75 |  |  | 170 |
Other |  | 116 |  |  | 102 |
Total other invested assets |  | $ | 1,091 |  |  | $ | 1,140 |

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- Definition Tabular disclosure, as of the most recent balance sheet date, of securities or other assets sold under repurchase agreements when this amount exceeds 10 percent of total assets. Disclosure may include the following: the type of securities or assets sold under agreements to repurchase, the carrying amount, market value (including accrued interest plus any cash or other assets on deposit. The information is segregated into securities maturing (1) overnight; (2) term up to 30 days; (3) term of 30 to 90 days; (4) term over 90 days; (5) demand. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(m)(1)(ii)(A)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 + Details
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