CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Revenues
Net premiums	$ 3,337.0	$ 3,230.0	$ 6,722.0	$ 6,385.0
Net investment income	857.0	754.0	1,713.0	1,564.0
Investment related gains (losses), net	(123.0)	(240.0)	(200.0)	(379.0)
Other revenues	85.0	159.0	172.0	250.0
Total revenues	4,156.0	3,903.0	8,407.0	7,820.0
Benefits and expenses
Claims and other policy benefits	3,013.0	2,938.0	6,076.0	5,809.0
Liability for Future Policy Benefit, Remeasurement Gain (Loss)	13.0	18.0	(13.0)	76.0
Market Risk Benefit, Change in Fair Value, Gain (Loss)	(31.0)	40.0	(17.0)	6.0
Interest credited	209.0	138.0	424.0	279.0
Policy acquisition costs and other insurance expenses	349.0	336.0	680.0	680.0
Other operating expenses	275.0	242.0	525.0	469.0
Interest expense	63.0	44.0	116.0	87.0
Total benefits and expenses	3,891.0	3,756.0	7,791.0	7,406.0
Income before income taxes	265.0	147.0	616.0	414.0
Provision for income taxes	58.0	41.0	156.0	111.0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	207.0	106.0	460.0	303.0	$ 521.0
Net Income (Loss) Attributable to Noncontrolling Interest	2.0	1.0	3.0	1.0	4.0
Net income	$ 205.0	$ 105.0	$ 457.0	$ 302.0	$ 517.0	$ 1,170.0
Earnings per share
Basic earnings per share	$ 3.09	$ 1.57	$ 6.86	$ 4.50
Diluted earnings per share	$ 3.05	$ 1.55	$ 6.77	$ 4.46