Investments in Debt and Equity Securities (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Schedule of Investments in Debt and Equity Securities
Due in one year or less, Cost Basis	$ 961
Due in one year or less, Fair Value	950
Due after one year through five years, Cost Basis	1,571
Due after one year through five years, Fair Value	1,511
Due after five through ten years, Cost Basis	257
Due after five years through ten years, Fair Value	245
Due after ten years, Cost Basis	65
Due after ten years, Fair Value	63
Debt Securities, Available-for-sale, Amortized Cost	3,358		$ 3,311
Debt securities, Available-for-sale, Fair value	3,237		3,164
Available-for-sale Securities, Proceeds, Gains and Losses
Proceeds from the sale of available-for-sale securities	223	$ 96
Gross gains from the sale of available-for-sale securities	0	0
Gross losses from the sale of available-for-sale securities	0	0
Schedule of Held-to-maturity Securities
Unrealized gain (loss) on equity securities	(8)	$ (12)
Bank Time Deposits
Schedule of Held-to-maturity Securities
Time deposit	250		0
U.S. governmental agency mortgage-backed securities
Schedule of Investments in Debt and Equity Securities
Debt Securities, Available-for-sale, Amortized Cost	366		364
Debt securities, Available-for-sale, Fair value	341		333
Residential
Schedule of Investments in Debt and Equity Securities
Debt Securities, Available-for-sale, Amortized Cost	3		3
Debt securities, Available-for-sale, Fair value	2		2
Commercial
Schedule of Investments in Debt and Equity Securities
Debt Securities, Available-for-sale, Amortized Cost	135		127
Debt securities, Available-for-sale, Fair value	$ 125		$ 117