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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 321	$ 258
Other comprehensive gain (loss):
Unrealized investment gain (loss)	46	(100)
Less: effect of income taxes	11	(24)
Other comprehensive gain (loss), net of tax	35	(76)
Comprehensive income	$ 356	$ 182

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