Investments (Tables)

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost and Fair Values of Fixed Maturity Securities

At March 31, 2024, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:

	Less than 12 Months						12 Months or More							Total
(in millions)	Cost		Unrealized Gains		Unrealized losses		Cost		Unrealized Gains		Unrealized losses			Cost		Fair Value
U.S. Treasury securities, obligations of U.S. Government    agencies and municipalities	$	6	$	—	$	—	$	18	$	—	$	(1	)	$	24	$	23
Corporate debt		4		—		—		1		—		—			5		5
Non-subsidiary equity	$	—	$	—	$	—	$	3	$	—	$	—		$	3	$	3
Total	$	10	$	—	$	—	$	22	$	—	$	(1	)	$	32	$	31

At December 31, 2023, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:

	Less than 12 Months						12 Months or More							Total
(in millions)	Cost		Unrealized Gains		Unrealized losses		Cost		Unrealized Gains		Unrealized losses			Cost		Fair Value
U.S. Treasury securities, obligations of U.S. Government    agencies and municipalities	$	7	$	—	$	—	$	18	$	—	$	(1	)	$	25	$	24
Corporate debt		4		—		—		1		—		—			5		5
Non-subsidiary equity	$	—	$	—	$	—	$	3	$	—	$	—		$	3	$	3
Total	$	11	$	—	$	—	$	22	$	—	$	(1	)	$	33	$	32