Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of cost of pension plans

The cost of our pension plans are as follows:

	Erie Insurance Group
(in millions)	Three months ended March 31,
	2013			2012
Service cost for benefits earned	$	7		$	5
Interest cost on benefits obligation	6			6
Expected return on plan assets	(8		)	(7		)
Prior service cost amortization	0			0
Net actuarial loss amortization	4			3
Pension plan cost	$	9		$	7