74 years. In addition, the Procables acquisition includes intangibles of $ 10.6 million related to a favorable lease contract at one of the manufacturing facilities. The Company will recognize the expense over the life of the ten year lease. The amortization of intangible assets in 2012 , 201 1 and 2010 was $ 1 1.5 million , $ 12.4 million , and $ 14.6 million , respectively . The estimated amortization expense for the next five years is in millions of dollars: 2013 — $ 12.8 million , 2014 — $ 12.0 million , 2015 — $ 1 1.1 million , 2016 — $ 10.2 million , and 2017 — $ 7.7 million and $ 13.3 million thereafter . 8. Accrued Liabilities Accrued liabilities consisted of the following (in millions):   Dec 31, 2012 Dec 31, 2011 Payroll related accruals $ 83.5 $ 62.2 Customers deposits and prepayments 84.6 89.4 Taxes other than income 37.0 29.1 Customer rebates 59.2 61.1 Insurance claims and related expenses 20.1 18.8 Current and deferred income tax liabilities 23.3 17.6 Derivative liability 8.8 30.2 Other accrued liabilities 146.9 111.6 Total $ 463.4 $ 420.0 Restructuring Accrual Over the last two years, the Company has incurred expenses as a result of cost management ef forts in Europe. The expenses primarily relate to employee termination benefits that are payable under local statutory requirements. In 2012 and 201 1 , the Company incurred $ 7.5 million and $ 5.3 million in char ges related to the substantial completion of negotiations with the works council of various operations in Europe to permanently reduce manufacturing personnel. The 2012 expenses were incurred and paid in 2012 ; therefore, the accrual balance at December 31, 2012 was immaterial. The 201 1 expenses were incurred and paid in 201 1 ; therefore, the accrual balance at December 31, 201 1 was immaterial. Other expenses related to routine employee reductions for cost savings initiatives throughout the globe, with the exception of the aforementioned severance plan were immaterial. W arranty Accrual The warranty accrual balance at December 31, 2012 , 201 1 , and 2010 was $ 12.8 million , $ 1 1.5 million and $ 1 1.5 million , respectively . The Company accrues liabilities under service and warranty policies based upon specific claims and a review of historical warranty and service claim experience. Adjustments are made to the accruals as claim data and historical experience change. In addition, the Company incurs discretionary costs to service its products in connection with product performance issues. Changes in the carrying amount of the service and product warranty accrual is below (in millions): Balance at December 31, 2010 $ 11.5 Net provisions for warranties issued 7.5 Net benefits for warranties existing at the beginning of the year (0.2 ) Payments related to the warranty accrual (7.0 ) Foreign currency translation (0.3 ) Balance at December 31, 2011 11.5 Net provisions for warranties issued 5.8 Payments related to the warranty accrual (4.7 ) Foreign currency translation 0.2 Balance at December 31, 2012 $ 12.8 T able of Contents