Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2011

Assumptions Used in Estimating the Grant Date Fair Value of Options Using the Black-Scholes Option Pricing Model

	Nine Months Ended September 30
	2011		2010
Dividend yield	0.75	%	0.17	%
Expected stock price volatility	34.87		56.09
Risk-free interest rate (weighted average)	2.48		2.80
Expected life of options	6 years		6 years

Stock-Based Compensation Expense Recognized in Noninterest Expense

	Three Months Ended September 30				Nine Months Ended September 30
(Dollars in millions)	2011		2010		2011		2010
Stock-based compensation expense:
Stock options		$4		$4		$11		$11
Restricted stock	8		9		25		31
Restricted stock units	1		—		9		—
Total stock-based compensation expense		$13		$13		$45		$42

Net Periodic Benefit Cost

	Three Months Ended September 30
	2011						2010
(Dollars in millions)	Retirement Benefits Plans			Other   Postretirement   Benefits			Retirement   Benefits Plans			Other   Postretirement   Benefits
Service cost		$18			$—			$17			$—
Interest cost	32			3			33			3
Expected return on plan assets	(47		)	(2		)	(46		)	(2		)
Amortization of prior service cost	(5		)	—			(3		)	—
Recognized net actuarial loss	11			—			16			—
Net periodic benefit cost		$9			$1			$17			$1
	Nine Months Ended September 30
	2011						2010
(Dollars in millions)	Retirement Benefits Plans			Other   Postretirement   Benefits			Retirement   Benefits Plans			Other   Postretirement   Benefits
Service cost		$53			$—			$52			$—
Interest cost	97			7			97			7
Expected return on plan assets	(142		)	(6		)	(137		)	(6		)
Amortization of prior service cost	(14		)	—			(9		)	—
Recognized net actuarial loss	32			1			46			1
Net periodic benefit cost		$26			$2			$49			$2