Employee Benefit Plans

6 Months Ended

Jun. 30, 2012

Employee Benefit Plans Disclosure [Abstract]

Employee Benefit Plans

EMPLOYEE BENEFIT PLANS

Net periodic benefit costs are charged to "employee benefits expense" on the consolidated statements of comprehensive income. The components of net periodic benefit cost for the Corporation's qualified pension plan, non-qualified pension plan and postretirement benefit plan are as follows.

Qualified Defined Benefit Pension Plan	Three Months Ended June 30,						Six Months Ended June 30,
(in millions)	2012			2011			2012			2011
Service cost	$	8		$	8		$	16		$	16
Interest cost	21			19			40			38
Expected return on plan assets	(28		)	(29		)	(56		)	(58		)
Amortization of prior service cost	1			1			2			2
Amortization of net loss	13			9			26			18
Net periodic defined benefit cost	$	15		$	8		$	28		$	16

Non-Qualified Defined Benefit Pension Plan	Three Months Ended June 30,						Six Months Ended June 30,
(in millions)	2012			2011			2012			2011
Service cost	$	1		$	1		$	2		$	2
Interest cost	3			3			5			5
Amortization of prior service cost	(1		)	(1		)	(1		)	(1		)
Amortization of net loss	2			1			4			2
Net periodic defined benefit cost	$	5		$	4		$	10		$	8

(Table continues on following page).

Postretirement Benefit Plan	Three Months Ended June 30,						Six Months Ended June 30,
(in millions)	2012			2011			2012			2011
Interest cost	$	1		$	1		$	2		$	2
Expected return on plan assets	(1		)	(1		)	(2		)	(2		)
Amortization of transition obligation	1			1			2			2
Amortization of net loss	$	1		$	1		$	1		$	1
Net periodic postretirement benefit cost	$	2		$	2		$	3		$	3

For further information on the Corporation's employee benefit plans, refer to Note 18 to the consolidated financial statements in the Corporation's 2011 Annual Report.