Parent Company (Details 1) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 33,370	$ 21,503	$ 32,359
Other assets	17,689	17,244
Total assets	228,354	188,548	191,000
Liabilities and Shareholders’ Equity
Long-term debt	42,573	38,675
Total liabilities	203,643	166,371
Shareholders’ Equity
Total shareholders’ equity	24,711	22,177	$ 22,984	$ 23,071
Total liabilities and shareholders’ equity	228,354	188,548
Parent Company
Assets
Cash and cash equivalents	8,188	5,341
Equity in net assets of subsidiaries and affiliates	24,702	22,623
Loans to subsidiaries and affiliates	22,658	17,848
Due from subsidiaries and affiliates	1,342	1,207
Other assets	156	158
Total assets	57,046	47,177
Liabilities and Shareholders’ Equity
Accounts payable and other liabilities	2,271	2,107
Due to subsidiaries and affiliates	632	443
Debt with subsidiaries and affiliates	0	136
Long-term debt	29,432	22,314
Total liabilities	32,335	25,000
Shareholders’ Equity
Total shareholders’ equity	24,711	22,177
Total liabilities and shareholders’ equity	$ 57,046	$ 47,177