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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 228	$ 178
Other comprehensive loss:
Unrealized investment loss	(15)	(25)
Less: effect of income taxes	(4)	(6)
Other comprehensive loss, net of tax	(11)	(19)
Comprehensive income	$ 217	$ 159

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