CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Debt securities amortized costs	$ 51,248	$ 52,611
Debt securities allowance for credit losses	0	0
Unamortized balance of loan origination fees	$ 4	$ 4
Class A common stock, par value	$ 0.001	$ 0.001
Class A common stock, shares authorized	1,500,000,000	1,500,000,000
Class A common stock, shares issued	600,000,000	596,000,000
Class A common stock, shares outstanding	508,000,000	508,000,000
Treasury stock, shares	92,000,000	88,000,000