Employee Benefit Plans

3 Months Ended

Mar. 31, 2014

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [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 March 31,
(in millions)	2014			2013
Service cost	$	7		$	9
Interest cost	22			19
Expected return on plan assets	(33		)	(33		)
Amortization of prior service cost	1			1
Amortization of net loss	8			19
Net periodic defined benefit cost	$	5		$	15

Non-Qualified Defined Benefit Pension Plan	Three Months Ended March 31,
(in millions)	2014			2013
Service cost	$	1		$	1
Interest cost	2			3
Amortization of prior service cost (credit)	(1		)	—
Amortization of net loss	2			2
Net periodic defined benefit cost	$	4		$	6

Postretirement Benefit Plan	Three Months Ended March 31,
(in millions)	2014			2013
Interest cost	$	1		$	1
Expected return on plan assets	(1		)	(1		)
Net periodic postretirement benefit cost	$	—		$	—

For further information on the Corporation's employee benefit plans, refer to Note 17 to the consolidated financial statements in the Corporation's 2013 Annual Report.