Commitments, Contingencies, and Concentrations of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Outstanding loan commitments

($ in millions)
Type of Commitment	Fixed Rate		Variable Rate		Total
Outstanding closed-end loan commitments	$	66		258		324
Unfunded commitments on revolving lines of credit,   credit cards and home equity loans		33		184		217
Total	$	99		442		541

Maximum credit risk

($ in thousands) Issuer	Amortized Cost		Fair Value
Ginnie Mae - mortgage-backed securities	$	83,950		86,353
Small Business Administration		55,034		55,710
Federal Home Loan Bank System - bonds		9,000		9,088
Federal Home Loan Bank of Atlanta  - common stock		4,934		4,934
Craven County, North Carolina municipal bond		3,643		4,029
First Citizens Bancorp (South Carolina) – bond / trust preferred securities		3,998		3,813
Fannie Mae - mortgage-backed securities and collateralized mortgage obligations		3,701		3,987
Spartanburg, South Carolina Sanitary Sewer District municipal bond		3,293		3,662
Richmond County, North Carolina municipal bond		2,608		2,860
Federal Farm Credit bonds		2,500		2,508
South Carolina State municipal bond		2,133		2,384
Virginia State Housing Authority municipal bond		2,162		2,371