. in 2012 , asset returns exceeded expectations by $ 211 million but discount rates fell almost 100 basis points resulting in an unfavorable mark-to-market adjustment recorded in earnings in the fourth quarter of 2012 . a portion of the 2012 pension mark-to-market adjustment was capitalized as an inventoriable cost at the end of 2012 . this amount has been recorded in earnings in the first quarter of 2013