Credit Quality And Allowance For Credit Losses (Schedule Of Nonaccrual, Reduced-Rate Loans And Foreclosed Property) (Details) - USD ($) $ in Millions	Mar. 31, 2019		Dec. 31, 2018
Nonaccrual loans	$ 191		$ 221
Reduced-rate loans	7	[1]	8
Total nonperforming loans	198		229
Foreclosed property	1	[2]	1
Total nonperforming assets	199		230
Residential Real Estate
Foreclosed property	0		0
Business loans
Reduced-rate loans	0		0
Retail loans
Nonaccrual loans	56		55
Reduced-rate loans	$ 7		$ 8

[1] There were no reduced-rate business loans at both March 31, 2019 and December 31, 2018. Reduced-rate retail loans were $7 million and $8 million at March 31, 2019 and December 31, 2018, respectively.

[2] There were no foreclosed residential real estate properties at both March 31, 2019 and December 31, 2018.