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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 185	$ 276	$ 413	$ 454
Other comprehensive income (loss):
Unrealized investment income (loss)	1	62	(14)	37
Less: effect of income taxes	1	15	(3)	9
Other comprehensive income (loss), net of tax	0	47	(11)	28
Comprehensive income	$ 185	$ 323	$ 402	$ 482

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