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Investment Information (Tables)
9 Months Ended
Sep. 30, 2022
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
September 30, 2022
Fixed maturities:
Corporate bonds$7,096,269 $51,777 $(895,365)$(35,657)$7,975,514 
Residential mortgage backed securities763,371 7,561 (84,183)839,991 
Municipal bonds407,724 5,437 (37,692)(99)440,078 
Commercial mortgage backed securities1,064,238 3,079 (50,010)(1,583)1,112,752 
U.S. government and government agencies5,126,407 36,074 (400,784)— 5,491,117 
Non-U.S. government securities2,073,170 9,315 (287,583)(1,720)2,353,158 
Asset backed securities1,589,548 1,076 (105,037)(6,936)1,700,445 
Total18,120,727 114,319 (1,860,654)(45,993)19,913,055 
Short-term investments1,940,857 1,419 (1,633)— 1,941,071 
Total$20,061,584 $115,738 $(1,862,287)$(45,993)$21,854,126 
December 31, 2021
Fixed maturities:
Corporate bonds$6,553,333 $104,170 $(69,194)$(2,037)$6,520,394 
Residential mortgage backed securities408,477 2,825 (5,410)(48)411,110 
Municipal bonds404,666 18,724 (1,409)(2)387,353 
Commercial mortgage backed securities1,046,484 1,740 (3,117)(6)1,047,867 
U.S. government and government agencies4,772,764 10,076 (45,967)— 4,808,655 
Non-U.S. government securities2,120,294 54,048 (34,749)(82)2,101,077 
Asset backed securities2,692,091 6,540 (11,108)(708)2,697,367 
Total17,998,109 198,123 (170,954)(2,883)17,973,823 
Short-term investments1,734,716 568 (590)— 1,734,738 
Total$19,732,825 $198,691 $(171,544)$(2,883)$19,708,561 
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
September 30, 2022
Fixed maturities:
Corporate bonds$5,596,229 $(625,774)$1,470,800 $(269,591)$7,067,029 $(895,365)
Residential mortgage backed securities620,572 (63,732)93,902 (20,451)714,474 (84,183)
Municipal bonds373,219 (36,039)9,399 (1,653)382,618 (37,692)
Commercial mortgage backed securities995,680 (49,215)34,445 (795)1,030,125 (50,010)
U.S. government and government agencies4,205,475 (303,805)715,347 (96,979)4,920,822 (400,784)
Non-U.S. government securities1,728,965 (221,540)301,298 (66,043)2,030,263 (287,583)
Asset backed securities1,193,405 (74,885)310,838 (30,152)1,504,243 (105,037)
Total14,713,545 (1,374,990)2,936,029 (485,664)17,649,574 (1,860,654)
Short-term investments227,201 (1,633)— — 227,201 (1,633)
Total$14,940,746 $(1,376,623)$2,936,029 $(485,664)$17,876,775 $(1,862,287)
December 31, 2021
Fixed maturities:
Corporate bonds$3,639,582 $(63,938)$98,867 $(5,256)$3,738,449 $(69,194)
Residential mortgage backed securities222,176 (3,545)46,809 (1,865)268,985 (5,410)
Municipal bonds26,665 (385)16,361 (1,024)43,026 (1,409)
Commercial mortgage backed securities675,603 (2,805)5,908 (312)681,511 (3,117)
U.S. government and government agencies4,211,621 (44,180)33,373 (1,787)4,244,994 (45,967)
Non-U.S. government securities1,511,301 (31,983)62,957 (2,766)1,574,258 (34,749)
Asset backed securities1,667,002 (9,853)33,082 (1,255)1,700,084 (11,108)
Total11,953,950 (156,689)297,357 (14,265)12,251,307 (170,954)
Short-term investments284,733 (590)— — 284,733 (590)
Total$12,238,683 $(157,279)$297,357 $(14,265)$12,536,040 $(171,544)
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.
September 30, 2022December 31, 2021
MaturityEstimated
Fair
Value
Amortized
Cost
Estimated
Fair
Value
Amortized
Cost
Due in one year or less$579,231 $599,970 $300,889 $299,772 
Due after one year through five years10,029,151 10,808,495 8,355,255 8,339,387 
Due after five years through 10 years3,856,180 4,495,113 4,689,155 4,684,393 
Due after 10 years239,008 356,289 505,758 493,927 
 14,703,570 16,259,867 13,851,057 13,817,479 
Residential mortgage backed securities763,371 839,991 408,477 411,110 
Commercial mortgage backed securities1,064,238 1,112,752 1,046,484 1,047,867 
Asset backed securities1,589,548 1,700,445 2,692,091 2,697,367 
Total$18,120,727 $19,913,055 $17,998,109 $17,973,823 
Summary of other investments and other investable assets
The following table summarizes the Company’s other investments and other investable assets:
September 30,
2022
December 31,
2021
Fixed maturities$530,303 $416,698 
Other investments1,005,929 1,432,553 
Short-term investments28,614 97,806 
Equity securities13,905 26,493 
Total$1,578,751 $1,973,550 
The following table summarizes the Company’s other investments, as detailed in the previous table, by strategy:
September 30,
2022
December 31,
2021
Lending$398,789 $536,345 
Investment grade fixed income229,262 147,810 
Term loan investments151,649 484,950 
Private equity117,856 91,126 
Energy55,250 81,692 
Credit related funds53,123 70,278 
Infrastructure— 20,352 
Total$1,005,929 $1,432,553 
Summary of investments accounted for using equity method
The following table summarizes the Company’s investments accounted for using the equity method, by strategy:
September 30,
2022
December 31,
2021
Credit related funds$1,135,623 $1,022,334 
Private equity761,997 436,042 
Real estate474,666 396,395 
Lending454,196 376,649 
Equities261,650 395,090 
Infrastructure236,920 230,070 
Energy113,778 119,141 
Fixed income127,116 101,890 
Total$3,565,946 $3,077,611 
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:
September 30,
2022
December 31,
2021
Investments accounted for using the equity method (1)$3,565,946 $3,077,611 
Investments accounted for using the fair value option (2)120,498 170,595 
Total$3,686,444 $3,248,206 
(1)    Aggregate unfunded commitments were $2.8 billion at September 30, 2022, compared to $2.6 billion at December 31, 2021.
(2)    Aggregate unfunded commitments were $21.5 million at September 30, 2022, compared to $18.8 million at December 31, 2021.
Components of net investment income
The components of net investment income were derived from the following sources:
September 30,
 20222021
Three Months Ended
Fixed maturities$123,568 $75,964 
Term loans88 1,736 
Equity securities4,261 9,867 
Short-term investments9,304 1,858 
Other (1)8,556 17,378 
Gross investment income145,777 106,803 
Investment expenses(17,137)(18,608)
Net investment income$128,640 $88,195 
Nine Months Ended
Fixed maturities$310,963 $255,215 
Term loans2,106 33,343 
Equity securities16,620 24,101 
Short-term investments15,999 3,603 
Other (1)26,598 51,683 
Gross investment income372,286 367,945 
Investment expenses(56,818)(69,281)
Net investment income$315,468 $298,664 
(1)    Includes income distributions from investment funds 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:
September 30,
 20222021
Three Months Ended
Available for sale securities:  
Gross gains on investment sales$18,030 $86,819 
Gross losses on investment sales(73,970)(18,446)
Change in fair value of assets and liabilities accounted for using the fair value option:
Fixed maturities(19,304)(7,492)
Other investments(17,882)3,811 
Equity securities(584)3,042 
Short-term investments(975)16 
Equity securities, at fair value:
Net realized gains (losses) on sales during the period(6,401)14,736 
Net unrealized gains (losses) on equity securities still held at reporting date(36,162)(40,155)
Allowance for credit losses:
Investments related8,652 (456)
Underwriting related(4,232)(3,985)
Derivative instruments (1)(48,196)(21,435)
Other(2,649)(41,495)
Net realized gains (losses)$(183,673)$(25,040)
Nine Months Ended
Available for sale securities:
Gross gains on investment sales$52,923 $267,362 
Gross losses on investment sales(239,493)(132,071)
Change in fair value of assets and liabilities accounted for using the fair value option:
Fixed maturities(89,148)19,973 
Other investments(35,203)111,550 
Equity securities(6,021)10,599 
Short-term investments(3,132)648 
Equity securities, at fair value:
Net realized gains (losses) on sales during the period75,689 86,155 
Net unrealized gains (losses) on equity securities still held at reporting date(318,732)45,400 
Allowance for credit losses:
Investments related(48,096)(1,208)
Underwriting related(7,676)2,664 
Derivative instruments (1)(117,591)(36,428)
Other(6,186)(54,316)
Net realized gains (losses)$(742,666)$320,328 
(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)Municipal
Bonds
Corporate
Bonds
Total
Three Months Ended September 30, 2022
Balance at beginning of period$18,283 $298 $39,829 $58,410 
Additions for current-period provision for expected credit losses1,782 12 1,986 3,780 
Additions (reductions) for previously recognized expected credit losses (9,767)(211)(2,552)(12,530)
Reductions due to disposals(1,780)— (1,887)(3,667)
Balance at end of period$8,518 $99 $37,376 $45,993 
Three Months Ended September 30, 2021
Balance at beginning of period$759 $$1,359 $2,124 
Additions for current-period provision for expected credit losses48 — — 48 
Additions (reductions) for previously recognized expected credit losses 14 (4)395 405 
Reductions due to disposals(234)— (232)(466)
Balance at end of period$587 $$1,522 $2,111 
Nine Months Ended September 30, 2022
Balance at beginning of period$802 $$2,079 $2,883 
Additions for current-period provision for expected credit losses12,560 359 40,602 53,521 
Additions (reductions) for previously recognized expected credit losses (2,575)(262)(2,772)(5,609)
Reductions due to disposals(2,269)— (2,533)(4,802)
Balance at end of period$8,518 $99 $37,376 $45,993 
Nine Months Ended September 30, 2021
Balance at beginning of period$1,490 $11 $896 $2,397 
Additions for current-period provision for expected credit losses282 — 2,428 2,710 
Additions (reductions) for previously recognized expected credit losses(751)(9)(557)(1,317)
Reductions due to disposals(434)— (1,245)(1,679)
Balance at end of period$587 $$1,522 $2,111 
(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:
September 30,
2022
December 31,
2021
Assets used for collateral or guarantees:  
Affiliated transactions$4,212,521 $4,223,955 
Third party agreements2,847,814 2,721,160 
Deposits with U.S. regulatory authorities756,368 798,100 
Deposits with non-U.S. regulatory authorities519,254 506,517 
Total restricted assets$8,335,957 $8,249,732 
Reconciliation of cash and restricted cash
The following table details reconciliation of cash and restricted cash within the Consolidated Balance Sheets:
September 30,
2022
December 31,
2021
Cash$813,583 $858,668 
Restricted cash (included in ‘other assets’)444,741 456,103 
Cash and restricted cash$1,258,324 $1,314,771