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Life Policy and Deposit Contract Reserves (Tables)
12 Months Ended
Dec. 31, 2012
Liability for Future Policy Benefits [Abstract]  
Schedule of components of life policy and deposit contract liability balances
(in millions)
 
Erie Family Life Insurance Company
 
 
2012
 
2011
 
2010
Deferred annuities
 
$
1,136

 
$
1,144

 
$
1,117

Ordinary/traditional life
 
313

 
282

 
254

Universal life
 
242

 
228

 
214

Other
 
17

 
17

 
18

Life policy and deposit contract reserves
 
$
1,708

 
$
1,671

 
$
1,603