Notes to CoNsolidated FiNaNCial statemeNts The current portion of accrued postretirement benefit cost, which is included in salaries, wages and benefits on the Consolidated  Balance Sheets, was $61.8 million and $58.8 million at December 31, 2011 and 2010, respectively. In 2011, the current portion of accrued  postretirement benefit cost relates to unfunded plans and represents the actuarial present value of expected payments related to the  plans to be made over the next 12 months. The estimated net loss and prior service credit for the postretirement plans that will be amortized from accumulated other comprehensive  income into net periodic benefit cost over the next fiscal year are $4.6 million and $ (0.3) million, respectively. For measurement purposes, the Company assumed a weighted average annual rate of increase in the per capita cost (health care  cost trend rate) for medical benefits of 7.9% for 2012, declining gradually to 5.0% in 2078 and thereafter; and 9.0% for 2012, declining  gradually to 5.0% in 2078 and thereafter for prescription drug benefits; and 10.0% for 2012, declining gradually to 5.0% in 2078 and  thereafter for HMO benefits. The assumed health care cost trend rate may have a significant effect on the amounts reported. A one percentage point increase in  the assumed health care cost trend rate would have increased the 2011 total service and interest cost components by $0.8 million  and would have increased the postretirement benefit obligation by $15.3 million. A one percentage point decrease would provide  corresponding reductions of $0.8 million and $14.2 million, respectively. The Patient Protection and Affordable Care Act of 2010 (as amended) (PPACA) was enacted on March 23, 2010. PPACA consists of a  broad range of provisions that may impact future plan design and administrative cost. The Company’s actuary determined the impact  PPACA has on the accumulated postretirement benefit obligation, to the extent measurable. The effect of PPACA was an increase in the  reported postretirement benefit obligation of approximately $3.5 million. The 2011 net periodic postretirement benefit cost increased by  approximately $0.6 million to reflect the impact of PPACA. THE TIMKEN COMPANY 72 The presentation in the above tables for amounts recognized in accumulated other comprehensive income (loss) on the Consolidated  Balance Sheets is before the effect of income taxes. The following table summarizes assumptions used to measure the benefit obligation for the postretirement benefit plans at  December 31: Postretirement benefit Plans 2011 2010 changes in plan assets and benefit obligations recognized in  accumulated other comprehensive income (aOcI) AOCI at beginning of year $ 110.4 $ 116.6 Net actuarial loss (gains)  1.7   (5.4) Prior service cost  –   1.7  Recognized net actuarial loss  (2.9)  (4.0) Recognized prior service credit  0.3   1.5  Total recognized in accumulated other comprehensive income at December 31 $ 109.5 $ 110.4 Postretirement benefit Plans 2011 2010 assumptions Discount rate  4.85% 5.50% Rate of return 5.00% 5.00% Note 13 – Postretirement Benefit Plans (continued)