zimmer holdings , inc . 2013 form 10-k annual report notes to consolidated financial statements ( continued ) we have four tranches of senior notes outstanding : $ 250 million aggregate principal amount of 1.4 percent notes due november 30 , 2014 , $ 500 million aggregate principal amount of 4.625 percent notes due november 30 , 2019 , $ 300 million aggregate principal amount of 3.375 percent notes due november 30 , 2021 and $ 500 million aggregate principal amount of 5.75 percent notes due november 30 , 2039 . interest on each series is payable on may 30 and november 30 of each year until maturity . the estimated fair value of our senior notes as of december 31 , 2013 , based on quoted prices for the specific securities from transactions in over-the-counter markets ( level 2 ) , was $ 1649.5 million . we may redeem the senior notes at our election in whole or in part at any time prior to maturity at a redemption price equal to the greater of 1 ) 100 percent of the principal amount of the notes being redeemed ; or 2 ) the sum of the present values of the remaining scheduled payments of principal and interest ( not including any portion of such payments of interest accrued as of the date of redemption ) , discounted to the date of redemption on a semi-annual basis at the treasury rate ( as defined in the debt agreement ) , plus 15 basis points in the case of the 2014 notes , 20 basis points in the case of the 2019 notes and 2021 notes , and 25 basis points in the case of the 2039 notes . we would also pay the accrued and unpaid interest on the senior notes to the redemption date . we have entered into interest rate swap agreements which we designated as fair value hedges of underlying fixed- rate obligations on our senior notes due 2019 and 2021 . see note 13 for additional information regarding the interest rate swap agreements . before our senior notes due november 30 , 2014 become payable , we intend to issue new senior notes in order to pay the $ 250 million owed . if we are not able to issue new senior notes , we intend to borrow against our senior credit facility to pay these notes . since we have the ability and intent to refinance these senior notes on a long-term basis with new notes or through our senior credit facility , we have classified these senior notes as long-term debt as of december 31 , 2013 . we also have available uncommitted credit facilities totaling $ 50.7 million . at december 31 , 2013 , the weighted average interest rate for our long-term borrowings was 3.3 percent . at december 31 , 2012 , the weighted average interest rate for short-term and long-term borrowings was 1.1 percent and 3.5 percent , respectively . we paid $ 68.1 million , $ 67.8 million and $ 55.0 million in interest during 2013 , 2012 and 2011 , respectively . 12 . accumulated other comprehensive income oci refers to certain gains and losses that under gaap are included in comprehensive income but are excluded from net earnings as these amounts are initially recorded as an adjustment to stockholders 2019 equity . amounts in oci may be reclassified to net earnings upon the occurrence of certain events . our oci is comprised of foreign currency translation adjustments , unrealized gains and losses on cash flow hedges , unrealized gains and losses on available-for-sale securities , and amortization of prior service costs and unrecognized gains and losses in actuarial assumptions on our defined benefit plans . foreign currency translation adjustments are reclassified to net earnings upon sale or upon a complete or substantially complete liquidation of an investment in a foreign entity . unrealized gains and losses on cash flow hedges are reclassified to net earnings when the hedged item affects net earnings . unrealized gains and losses on available-for-sale securities are reclassified to net earnings if we sell the security before maturity or if the unrealized loss is considered to be other-than-temporary . we typically hold our available-for-sale securities until maturity and are able to realize their amortized cost and therefore we do not have reclassification adjustments to net earnings on these securities . amounts related to defined benefit plans that are in oci are reclassified over the service periods of employees in the plan . the reclassification amounts are allocated to all employees in the plans and therefore the reclassified amounts may become part of inventory to the extent they are considered direct labor costs . see note 14 for more information on our defined benefit plans . the following table shows the changes in the components of oci , net of tax ( in millions ) : foreign currency translation hedges unrealized gains on securities defined benefit .
what was the change in interest paid between 2011 and 2012 in millions?
.