Parent Company - Condensed Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets
Other assets	$ 24,263	$ 21,179
Total assets	300,052	271,461	$ 261,108
Liabilities and Shareholders’ Equity
Long-term debt	56,387	49,715
Total liabilities	266,578	241,197
Shareholders’ Equity
Total shareholders’ equity	33,474	30,264	$ 28,057	$ 24,711
Total liabilities and shareholders’ equity	300,052	271,461
Parent Company
Assets
Cash and cash equivalents	11,870	7,293
Equity in net assets of subsidiaries and affiliates	33,636	30,165
Loans to subsidiaries and affiliates	31,887	28,897
Due from subsidiaries and affiliates	637	1,291
Other assets	1,107	573
Total assets	79,137	68,219
Liabilities and Shareholders’ Equity
Accounts payable and other liabilities	2,141	2,239
Due to subsidiaries and affiliates	735	404
Long-term debt	42,787	35,312
Total liabilities	45,663	37,955
Shareholders’ Equity
Total shareholders’ equity	33,474	30,264
Total liabilities and shareholders’ equity	$ 79,137	$ 68,219