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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,179	$ 1,091	$ 792
Other comprehensive income (loss):
Unrealized investment income (loss)	33	102	(204)
Less: effect of income taxes	8	24	(49)
Other comprehensive income (loss), net of tax	25	78	(155)
Comprehensive income	$ 1,204	$ 1,169	$ 637

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