Other Noninterest Income and Noninterest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noninterest Income
Gain (loss) on sales	$ 16	$ 26	$ 79
Other fee income	100	46	22
Brokerage commissions and fees	100	69	59
Gain (Loss) on Energy Investments	(235)	(58)	(37)
Other	134	157	136
Total other noninterest income	115	240	259
Noninterest Expense
Fees to affiliates	115	105	100
Expenses of the LIHC consolidated VIEs	24	43	68
Net periodic pension cost excluding service cost	(124)	(119)	(84)
Other	394	360	311
Total other noninterest expense	$ 409	$ 389	$ 395