Note 13 – Postretirement Benefit Plans (continued) The following tables set forth the change in benefit obligation, change in plan assets, funded status and amounts recognized on the  Consolidated Balance Sheets of the defined benefit postretirement benefit plans as of December 31, 2011 and 2010: Postretirement benefit Plans 2011 2010 change in benefit obligation  Benefit obligation at beginning of year  $ 644.0 $ 662.7 Service cost   2.5   2.1  Interest cost   32.9   35.6  Amendments   –   1.7  Actuarial gains  (2.8)  (5.2) International plan exchange rate change   –   0.1  Benefits paid   (48.0)  (53.0) Benefit obligation at end of year  $ 628.6 $ 644.0 change in plan assets Fair value of plan assets at beginning of year  $ 54.0 $ – Company contributions / payments  164.9   107.0  Benefits paid   (48.0)  (53.0) Fair value of plan assets at end of year  $ 170.9 $ 54.0 Funded status at end of year $ (457.7) $ (590.0) amounts recognized on the consolidated balance sheets  Current liabilities $ (61.8) $ (58.8) Non-current liabilities  (395.9)  (531.2) $ (457.7) $ (590.0) amounts recognized in accumulated other comprehensive income Net actuarial loss $ 103.0 $ 104.1 Net prior service cost 6.5  6.3  Accumulated other comprehensive income $ 109.5 $ 110.4 FINANCIAls ANd FOOTNOTEs 71 THE TIMKEN COMPANY