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Investments (Tables)

3 Months Ended

Mar. 31, 2023

Investments [Abstract]

Net Realized Capital Gains (Losses)

Net Realized Gains (Losses)
									Three Months Ended March 31,
(Before tax)												2023			2022
Gross gains on sales of fixed maturities												$	17		$	23
Gross losses on sales of fixed maturities												(39)			(95)
Equity securities [1]
Net realized gains (losses) on sales of equity securities												50			40
Change in net unrealized gains (losses) of equity securities												(15)			(147)
Net realized and unrealized gains (losses) on equity securities												35			(107)
Net credit losses on fixed maturities, AFS												(5)			(12)
Change in ACL on mortgage loans												—			(2)
Intent-to-sell impairments												—			(3)
Other, net [2]												(15)			51
Net realized gains (losses)												$	(7)		$	(145)

[1]The change in net unrealized gains (losses) on equity securities still held as of March 31, 2023, and included in net realized gains (losses) were $2 and $(131) for the three months ended March 31, 2023, and 2022, respectively.

[2]For the three months ended March 31, 2023 and 2022 includes gains (losses) from transactional foreign currency revaluation of $(7) and $6, respectively, and gains (losses) on non-qualifying derivatives of $5 and $47, respectively.

Debt Securities, Available-for-sale, Allowance for Credit Loss [Table Text Block]

ACL on Fixed Maturities, AFS by Type
									Three Months Ended March 31,
															2023												2022
(Before tax)																								Corporate						CMBS			Total						Corporate			Foreign govt./govt. agencies			CMBS			Total
Balance as of beginning of period																								$	2					$	10		$	12					$	1		$	—		$	—		$	1
Credit losses on fixed maturities where an allowance was not previously recorded																								4						—			4						8			3			1			12
Net increases (decreases) on fixed maturities where an allowance was previously recorded																								—						1			1						—			—			—			—
Balance as of end of period																								$	6					$	11		$	17					$	9		$	3		$	1		$	13

Schedule of Available-for-sale Securities

Fixed Maturities, AFS, by Type
			March 31, 2023																		December 31, 2022
			Amortized Cost			ACL			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value									Amortized Cost			ACL			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
ABS			$	2,233		$	—		$	5		$	(57)		$	2,181								$	2,016		$	—		$	—		$	(75)		$	1,941
CLO			3,089			—			3			(79)			3,013									3,040			—			3			(102)			2,941
CMBS			3,661			(11)			20			(341)			3,329									3,715			(10)			21			(358)			3,368
Corporate			17,424			(6)			69			(1,277)			16,210									16,794			(2)			33			(1,592)			15,233
Foreign govt./govt. agencies			588			—			1			(40)			549									596			—			—			(49)			547
Municipal			6,616			—			119			(370)			6,365									6,718			—			93			(515)			6,296
RMBS			4,169			—			5			(437)			3,737									4,214			—			2			(508)			3,708
U.S. Treasuries			2,238			—			2			(180)			2,060									2,440			—			—			(243)			2,197
Total fixed maturities, AFS			$	40,018		$	(17)		$	224		$	(2,781)		$	37,444								$	39,533		$	(12)		$	152		$	(3,442)		$	36,231

Investments by Contractual Maturity Year

Fixed Maturities, AFS, by Contractual Maturity Year
			March 31, 2023									December 31, 2022
			Amortized Cost			Fair Value						Amortized Cost			Fair Value
One year or less			$	1,269		$	1,248					$	1,417		$	1,396
Over one year through five years			8,806			8,461						8,340			7,930
Over five years through ten years			7,427			6,848						7,259			6,485
Over ten years			9,364			8,627						9,532			8,462
Subtotal			26,866			25,184						26,548			24,273
Mortgage-backed and asset-backed securities			13,152			12,260						12,985			11,958
Total fixed maturities, AFS			$	40,018		$	37,444					$	39,533		$	36,231

Unrealized Gain (Loss) on Investments [Table Text Block]

Unrealized Loss Aging for Fixed Maturities, AFS by Type and Length of Time as of March 31, 2023
						Less Than 12 Months												12 Months or More												Total
						Fair Value			Unrealized Losses									Fair Value			Unrealized Losses									Fair Value			Unrealized Losses
ABS						$	1,225		$	(17)								$	562		$	(40)								$	1,787		$	(57)
CLO						403			(6)									2,551			(73)									2,954			(79)
CMBS						914			(52)									2,232			(289)									3,146			(341)
Corporate						6,114			(278)									7,233			(999)									13,347			(1,277)
Foreign govt./govt. agencies						133			(6)									363			(34)									496			(40)
Municipal						2,125			(92)									1,832			(278)									3,957			(370)
RMBS						1,008			(59)									2,488			(378)									3,496			(437)
U.S. Treasuries						857			(54)									1,102			(126)									1,959			(180)
Total fixed maturities, AFS in an unrealized loss position						$	12,779		$	(564)								$	18,363		$	(2,217)								$	31,142		$	(2,781)

Unrealized Loss Aging for Fixed Maturities, AFS by Type and Length of Time as of December 31, 2022
						Less Than 12 Months												12 Months or More												Total
						Fair Value			Unrealized Losses									Fair Value			Unrealized Losses									Fair Value			Unrealized Losses
ABS						$	1,577		$	(50)								$	281		$	(25)								$	1,858		$	(75)
CLO						1,490			(48)									1,378			(54)									2,868			(102)
CMBS						2,560			(270)									521			(88)									3,081			(358)
Corporate						11,157			(1,071)									2,575			(521)									13,732			(1,592)
Foreign govt./govt. agencies						308			(26)									224			(23)									532			(49)
Municipal						4,270			(461)									228			(54)									4,498			(515)
RMBS						2,311			(249)									1,250			(259)									3,561			(508)
U.S. Treasuries						1,554			(145)									633			(98)									2,187			(243)
Total fixed maturities, AFS in an unrealized loss position						$	25,227		$	(2,320)								$	7,090		$	(1,122)								$	32,317		$	(3,442)

Financing Receivable, Allowance for Credit Loss [Table Text Block]

ACL on Mortgage Loans
			Three Months Ended March 31,
			2023			2022
ACL as of beginning of period			$	36		$	29
Current period provision (release)			—			2
ACL as of March 31,			$	36		$	31

Loans Credit Quality

Mortgage Loans LTV & DSCR by Origination Year as of March 31, 2023
			2023						2022						2021						2020						2019						2018 & Prior						Total
Loan-to-value			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost [1]			Avg. DSCR
Greater than 80%			$	—		—x			$	—		—x			$	—		—x			$	—		—x			$	—		—x			$	10		1.92x			$	10		1.92x
65% - 80%			—			—x			16			2.02x			58			1.84x			43			2.87x			100			2.05x			197			1.34x			414			1.76x
Less than 65%			73			1.35x			855			2.42x			1,509			2.80x			664			3.02x			678			2.91x			1,880			2.45x			5,659			2.65x
Total mortgage loans			$	73		1.35x			$	871		2.41x			$	1,567		2.77x			$	707		3.01x			$	778		2.80x			$	2,087		2.34x			$	6,083		2.59x

[1]Amortized cost of mortgage loans excludes ACL of $36.

Mortgage Loans LTV & DSCR by Origination Year as of December 31, 2022
			2022						2021						2020						2019						2018						2017 & Prior						Total
Loan-to-value			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost			Avg. DSCR			Amortized Cost [1]			Avg. DSCR
Greater than 80%			$	—		—x			$	—		—x			$	—		—x			$	—		—x			$	—		—x			$	23		1.40x			$	23		1.40x
65% - 80%			16			2.02x			59			2.61x			43			2.78x			100			1.95x			108			1.11x			117			1.91x			443			1.91x
Less than 65%			839			2.43x			1,475			2.79x			663			3.02x			680			2.77x			437			2.21x			1,476			2.54x			5,570			2.65x
Total mortgage loans			$	855		2.42x			$	1,534		2.78x			$	706		3.01x			$	780		2.66x			$	545		1.99x			$	1,616		2.48x			$	6,036		2.59x

[1]Amortized cost of mortgage loans excludes ACL of $36.

Mortgage Loans by Region
			March 31, 2023									December 31, 2022
			Amortized Cost			Percent of Total						Amortized Cost			Percent of Total
East North Central			$	337		5.6		%				$	317		5.3		%
Middle Atlantic			315			5.2		%				316			5.2		%
Mountain			706			11.6		%				707			11.7		%
New England			354			5.8		%				395			6.5		%
Pacific			1,279			21.0		%				1,299			21.5		%
South Atlantic			1,732			28.5		%				1,670			27.7		%
West North Central			111			1.8		%				105			1.7		%
West South Central			432			7.1		%				421			7.0		%
Other [1]			817			13.4		%				806			13.4		%
Total mortgage loans			6,083			100.0		%				6,036			100.0		%
ACL			(36)									(36)
Total mortgage loans, net of ACL			$	6,047								$	6,000

[1]Primarily represents loans collateralized by multiple properties in various regions.

Mortgage Loans by Property Type
			March 31, 2023									December 31, 2022
			Amortized Cost			Percent of Total						Amortized Cost			Percent of Total
Commercial
Industrial			$	2,266		37.3		%				$	2,217		36.7		%
Multifamily			2,287			37.6		%				2,247			37.2		%
Office			585			9.6		%				585			9.7		%
Retail [1]			945			15.5		%				947			15.7		%
Other			—			—		%				40			0.7		%
Total mortgage loans			6,083			100.0		%				6,036			100.0		%
ACL			(36)									(36)
Total mortgage loans, net of ACL			$	6,047								$	6,000

[1]Primarily comprised of grocery-anchored retail centers, with no exposure to regional shopping malls.

Schedule of Financial Instruments Owned and Pledged as Collateral

			March 31, 2023			December 31, 2022
			Fair Value			Fair Value
Securities on deposit with government agencies			$	2,316		$	2,189
Fixed maturities in trust for benefit of Lloyd's Syndicate policyholders			783			718
Short-term investments in trust for benefit of Lloyd's Syndicate policyholders			33			8
Fixed maturities in Lloyd's trust account			176			161
Other investments			66			62
Total Other Restricted Investments			$	3,374		$	3,138

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