Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
LHFS at fair value	$ 5,515	$ 5,673
MSRs at fair value	2,077	2,618
Other Assets, Fair Value Disclosure	4,849	3,310
Other Liabilities, Fair Value Disclosure	$ 1,263	$ 1,440
Preferred stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, liquidation preference (in dollars per share)	25,000	25,000
Common stock, par value (in dollars per share)	$ 5	$ 5