Fair Values (Details Textual) - Fair Value, Nonrecurring - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of equity securities without readily determinable fair values	$ 900		$ 900		$ 1,000
Net upward adjustments of equity securities without readily determinable fair values	0	$ 6	0	$ 94
Net downward adjustments of equity securities without readily determinable fair values	17	$ 51	122	$ 153
Cumulative net unrealized gains for equity investments without readily determinable fair values	1,000		1,000		1,200
Cumulative net unrealized losses for equity investments without readily determinable fair values	412		412		394
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of equity securities without readily determinable fair values	$ 8		$ 8		$ 597