Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 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 June 30,						Six months ended June 30,
	2013			2012			2013			2012
Service cost for benefits earned	$	6		$	6		$	13		$	11
Interest cost on benefits obligation	7			6			13			12
Expected return on plan assets	(7		)	(7		)	(15		)	(14		)
Prior service cost amortization	1			0			1			0
Net actuarial loss amortization	3			3			7			6
Pension plan cost	$	10		$	8		$	19		$	15