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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 1,091	$ 792	$ 659
Other comprehensive income (loss):
Unrealized investment income (loss)	102	(204)	(55)
Less: effect of income taxes	24	(49)	(13)
Other comprehensive income (loss), net of tax	78	(155)	(42)
Comprehensive income	$ 1,169	$ 637	$ 617

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