Short-term Borrowings Short-term Borrowings (Tables)

12 Months Ended

Dec. 31, 2019

Short-term Debt [Abstract]

Summary of Short-term Borrowings

The following table provides a summary of short-term borrowings.

(dollar amounts in millions)	Federal Funds Purchased and Securities Sold Under Agreements to Repurchase			Other Short-term Borrowings
December 31, 2019
Amount outstanding at year-end	$	71		$	—
Weighted average interest rate at year-end	1.50		%	—		%
Maximum month-end balance during the year	$	835		$	1,200
Average balance outstanding during the year	113			256
Weighted average interest rate during the year	2.28		%	2.44		%
December 31, 2018
Amount outstanding at year-end	$	44		$	—
Weighted average interest rate at year-end	2.39		%	—		%
Maximum month-end balance during the year	$	182		$	250
Average balance outstanding during the year	59			3
Weighted average interest rate during the year	1.91		%	1.75		%
December 31, 2017
Amount outstanding at year-end	$	10		$	—
Weighted average interest rate at year-end	1.43		%	—		%
Maximum month-end balance during the year	$	41		$	1,024
Average balance outstanding during the year	20			257
Weighted average interest rate during the year	1.02		%	1.15		%