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Investment Information (Tables)
6 Months Ended
Jun. 30, 2023
Disclosure Investment Information [Abstract]  
Summary of fair value and cost or amortized cost of available for sale securities
The following table summarizes the fair value and cost or amortized cost of the Company’s securities classified as available for sale:
Estimated
Fair
Value
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Allowance for Expected Credit Losses Cost or
Amortized
Cost
June 30, 2023
Fixed maturities:
Corporate bonds$9,977 $54 $(693)$(50)$10,666 
Residential mortgage backed securities860 (87)— 944 
Municipal bonds306 (27)— 332 
Commercial mortgage backed securities1,082 — (49)(2)1,133 
U.S. government and government agencies4,529 (176)— 4,701 
Non-U.S. government securities2,277 20 (204)(3)2,464 
Asset backed securities2,403 (95)(6)2,499 
Total21,434 87 (1,331)(61)22,739 
Short-term investments1,702 (1)— 1,701 
Total$23,136 $89 $(1,332)$(61)$24,440 
December 31, 2022
Fixed maturities:
Corporate bonds$8,020 $55 $(781)$(30)$8,776 
Residential mortgage backed securities795 (87)— 877 
Municipal bonds419 (33)— 449 
Commercial mortgage backed securities1,047 (58)(3)1,107 
U.S. government and government agencies5,162 15 (343)— 5,490 
Non-U.S. government securities2,313 (238)(2)2,544 
Asset backed securities1,927 (107)(6)2,039 
Total19,683 89 (1,647)(41)21,282 
Short-term investments1,332 (2)— 1,333 
Total$21,015 $90 $(1,649)$(41)$22,615 
Summary of available for sale securities in a continual unrealized loss position
The following table summarizes, for all available for sale securities in an unrealized loss position, the fair value and gross unrealized loss by length of time the security has been in a continual unrealized loss position:
 Less than 12 Months12 Months or MoreTotal
Estimated
Fair
Value
Gross
Unrealized
Losses
Estimated
Fair
Value
Gross
Unrealized
Losses
Estimated
Fair
Value
Gross
Unrealized
Losses
June 30, 2023
Fixed maturities:
Corporate bonds$4,083 $(118)$5,184 $(575)$9,267 $(693)
Residential mortgage backed securities441 (24)330 (63)771 (87)
Municipal bonds126 (7)169 (20)295 (27)
Commercial mortgage backed securities127 (4)892 (45)1,019 (49)
U.S. government and government agencies3,362 (61)1,085 (115)4,447 (176)
Non-U.S. government securities1,242 (61)981 (143)2,223 (204)
Asset backed securities695 (25)1,046 (70)1,741 (95)
Total10,076 (300)9,687 (1,031)19,763 (1,331)
Short-term investments251 (1)— — 251 (1)
Total$10,327 $(301)$9,687 $(1,031)$20,014 $(1,332)
December 31, 2022
Fixed maturities:
Corporate bonds$4,823 $(393)$2,559 $(388)$7,382 $(781)
Residential mortgage backed securities546 (52)154 (35)700 (87)
Municipal bonds364 (30)16 (3)380 (33)
Commercial mortgage backed securities598 (35)445 (23)1,043 (58)
U.S. government and government agencies3,557 (197)1,443 (146)5,000 (343)
Non-U.S. government securities1,703 (154)542 (84)2,245 (238)
Asset backed securities1,148 (66)512 (41)1,660 (107)
Total12,739 (927)5,671 (720)18,410 (1,647)
Short-term investments237 (2)— — 237 (2)
Total$12,976 $(929)$5,671 $(720)$18,647 $(1,649)
Contractual maturities of the Company's fixed maturities
The contractual maturities of the Company’s fixed maturities are shown in the following table. Expected maturities, which are management’s best estimates, will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
June 30, 2023December 31, 2022
MaturityEstimated
Fair
Value
Amortized
Cost
Estimated
Fair
Value
Amortized
Cost
Due in one year or less$576 $603 $511 $537 
Due after one year through five years12,033 12,606 11,016 11,715 
Due after five years through 10 years4,449 4,889 3,984 4,527 
Due after 10 years31 65 403 480 
 17,089 18,163 15,914 17,259 
Residential mortgage backed securities860 944 795 877 
Commercial mortgage backed securities1,082 1,133 1,047 1,107 
Asset backed securities2,403 2,499 1,927 2,039 
Total$21,434 $22,739 $19,683 $21,282 
Summary of other investments and other investable assets
The following table summarizes the Company’s other investments and other investable assets:
June 30,
2023
December 31,
2022
Fixed maturities$659 $554 
Other investments1,172 1,043 
Short-term investments33 
Equity securities14 
Total$1,846 $1,644 
The following table summarizes the Company’s other investments, as detailed in the previous table, by strategy:
June 30,
2023
December 31,
2022
Lending$451 $406 
Investment grade fixed income265 271 
Term loan investments228 164 
Private equity149 123 
Credit related funds60 56 
Energy19 23 
Total$1,172 $1,043 
Summary of investments accounted for using equity method
The following table summarizes the Company’s investments accounted for using the equity method, by strategy:
June 30,
2023
December 31,
2022
Credit related funds$1,200 $1,136 
Private equity1,028 917 
Real estate590 535 
Lending567 531 
Infrastructure280 245 
Equities168 169 
Fixed income134 130 
Energy106 111 
Total$4,073 $3,774 
Summary of investments in limited partnership interests where the Company has a variable interest
The following table summarizes investments in limited partnership interests where the Company has a variable interest by balance sheet line item:
June 30,
2023
December 31,
2022
Investments accounted for using the equity method (1)$4,073 $3,774 
Investments accounted for using the fair value option (2)127 131 
Total$4,200 $3,905 
(1)    Aggregate unfunded commitments were $2.5 billion at June 30, 2023, compared with $2.6 billion at December 31, 2022.
(2)    Aggregate unfunded commitments were $66 million at June 30, 2023, compared to $17 million at December 31, 2022.
Components of net investment income
The components of net investment income were derived from the following sources:
June 30,
 20232022
Three Months Ended
Fixed maturities$214 $105 
Equity securities
Short-term investments15 
Other (1)25 
Gross investment income260 123 
Investment expenses(18)(17)
Net investment income$242 $106 
Six Months Ended
Fixed maturities$402 $187 
Equity securities10 12 
Short-term investments29 
Other (1)38 20 
Gross investment income479 226 
Investment expenses(38)(40)
Net investment income$441 $186 
(1)    Amounts include dividends and other distributions on investment funds, term loan investments, funds held balances, cash balances and other items.
Summary of net realized gains (losses), including change in allowance for credit losses on financial assets and net impairment losses recognized in earnings
Net realized gains (losses), which include changes in the allowance for credit losses on financial assets and net impairment losses recognized in earnings were as follows:
June 30,
 20232022
Three Months Ended
Available for sale securities:  
Gross gains on investment sales$22 $15 
Gross losses on investment sales(169)(57)
Change in fair value of assets and liabilities accounted for using the fair value option:
Fixed maturities(2)(39)
Other investments(23)
Equity securities— (2)
Short-term investments— (2)
Equity securities, at fair value:
Net realized gains (losses) on sales during the period17 17 
Net unrealized gains (losses) on equity securities still held at reporting date25 (106)
Allowance for credit losses:
Investments related(7)(25)
Underwriting related(1)
Derivative instruments (1)(15)(46)
Other— 
Net realized gains (losses)$(123)$(267)
Six Months Ended
Available for sale securities:
Gross gains on investment sales$39 $35 
Gross losses on investment sales(280)(165)
Change in fair value of assets and liabilities accounted for using the fair value option:
Fixed maturities(70)
Other investments14 (19)
Equity securities(5)
Short-term investments— (2)
Equity securities, at fair value:
Net realized gains (losses) on sales during the period36 82 
Net unrealized gains (losses) on equity securities still held at reporting date63 (282)
Allowance for credit losses:
Investments related(23)(57)
Underwriting related(1)(3)
Derivative instruments (1)41 (70)
Other— (3)
Net realized gains (losses)$(106)$(559)
(1)    See note 9 for information on the Company’s derivative instruments.
Rollforward of the allowance for expected credit losses of securities classified as available for sale
The following table provides a roll forward of the allowance for expected credit losses of the Company’s securities classified as available for sale:
Structured Securities (1)Corporate
Bonds
Non-U.S.
Government
Securities
Total
Three Months Ended June 30, 2023
Balance at beginning of period$$45 $$56 
Additions for current-period provision for expected credit losses— — — — 
Additions (reductions) for previously recognized expected credit losses — — 
Reductions due to disposals— (1)— (1)
Balance at end of period$$50 $$61 
Three Months Ended June 30, 2022
Balance at beginning of period$$27 $— $34 
Additions for current-period provision for expected credit losses13 — 18 
Additions (reductions) for previously recognized expected credit losses — — 
Reductions due to disposals— — — — 
Balance at end of period$19 $40 $— $59 
Six Months Ended June 30, 2023
Balance at beginning of period$$30 $$41 
Additions for current-period provision for expected credit losses— — 
Additions (reductions) for previously recognized expected credit losses(1)21 21 
Reductions due to disposals— (2)— (2)
Balance at end of period$$50 $$61 
Six Months Ended June 30, 2022
Balance at beginning of period$$$— $
Additions for current-period provision for expected credit losses11 38 — 49 
Additions (reductions) for previously recognized expected credit losses— — 
Reductions due to disposals— — — — 
Balance at end of period$19 $40 $— $59 
(1)    Includes asset backed securities, residential mortgage backed securities and commercial mortgage backed securities.
Summary of restricted assets
The following table details the value of the Company’s restricted assets:
June 30,
2023
December 31,
2022
Assets used for collateral or guarantees:  
Affiliated transactions$4,477 $4,254 
Third party agreements2,822 2,633 
Deposits with U.S. regulatory authorities797 776 
Other (1)1,217 1,038 
Total restricted assets$9,313 $8,701 
(1)    Primarily includes Funds at Lloyds, deposits with non-U.S. regulatory authorities and other restricted assets.
Reconciliation of cash and restricted cash
The following table details reconciliation of cash and restricted cash within the Consolidated Balance Sheets:
June 30,
2023
December 31,
2022
Cash$904 $855 
Restricted cash (included in ‘other assets’)449 418 
Cash and restricted cash$1,353 $1,273