Net Interest Income (Tables)

12 Months Ended

Dec. 31, 2017

Banking and Thrift [Abstract]

Components of Interest Revenue and Interest Expense

The following table presents the components of interest income and interest expense, and related NII, for the periods indicated:

	Years Ended December 31,
(In millions)	2017		2016		2015
Interest income:
Deposits with banks	$	180	$	126	$	208
Investment securities:
U.S. Treasury and federal agencies	854		821		735
State and political subdivisions	226		224		227
Other investments	658		756		934
Securities purchased under resale agreements	264		146		62
Loans and leases	504		378		311
Other interest-earning assets	222		61		11
Total interest income	2,908		2,512		2,488
Interest expense:
Deposits	163		85		97
Securities sold under repurchase agreements	2		1		—
Short-term borrowings	10		7		7
Long-term debt	308		260		250
Other interest-bearing liabilities	121		75		46
Total interest expense	604		428		400
Net interest income	$	2,304	$	2,084	$	2,088