long-term borrowings the carrying value and fair value of long-term borrowings estimated using market prices at december 31 , 2013 included the following : ( in millions ) maturity amount unamortized discount carrying value fair value .

maturity amount: 3.50% ( 3.50 % ) notes due 2014: 1000
1.375% ( 1.375 % ) notes due 2015: 750
6.25% ( 6.25 % ) notes due 2017: 700
5.00% ( 5.00 % ) notes due 2019: 1000
4.25% ( 4.25 % ) notes due 2021: 750
3.375% ( 3.375 % ) notes due 2022: 750
total long-term borrowings: 4950
unamortized discount: 3.50% ( 3.50 % ) notes due 2014: 2014
1.375% ( 1.375 % ) notes due 2015: 2014
6.25% ( 6.25 % ) notes due 2017: -2
5.00% ( 5.00 % ) notes due 2019: -2
4.25% ( 4.25 % ) notes due 2021: -3
3.375% ( 3.375 % ) notes due 2022: -4
total long-term borrowings: -11
carrying value: 3.50% ( 3.50 % ) notes due 2014: 1000
1.375% ( 1.375 % ) notes due 2015: 750
6.25% ( 6.25 % ) notes due 2017: 698
5.00% ( 5.00 % ) notes due 2019: 998
4.25% ( 4.25 % ) notes due 2021: 747
3.375% ( 3.375 % ) notes due 2022: 746
total long-term borrowings: 4939
fair value: 3.50% ( 3.50 % ) notes due 2014: 1029
1.375% ( 1.375 % ) notes due 2015: 759
6.25% ( 6.25 % ) notes due 2017: 812
5.00% ( 5.00 % ) notes due 2019: 1140
4.25% ( 4.25 % ) notes due 2021: 799
3.375% ( 3.375 % ) notes due 2022: 745
total long-term borrowings: 5284

long-term borrowings at december 31 , 2012 had a carrying value of $ 5.687 billion and a fair value of $ 6.275 billion determined using market prices at the end of december 2012 . 2015 and 2022 notes . in may 2012 , the company issued $ 1.5 billion in aggregate principal amount of unsecured unsubordinated obligations . these notes were issued as two separate series of senior debt securities including $ 750 million of 1.375% ( 1.375 % ) notes maturing in june 2015 ( the 201c2015 notes 201d ) and $ 750 million of 3.375% ( 3.375 % ) notes maturing in june 2022 ( the 201c2022 notes 201d ) . net proceeds were used to fund the repurchase of blackrock 2019s common stock and series b preferred from barclays and affiliates and for general corporate purposes . interest on the 2015 notes and the 2022 notes of approximately $ 10 million and $ 25 million per year , respectively , is payable semi-annually on june 1 and december 1 of each year , which commenced december 1 , 2012 . the 2015 notes and 2022 notes may be redeemed prior to maturity at any time in whole or in part at the option of the company at a 201cmake-whole 201d redemption price . the 201cmake-whole 201d redemption price represents a price , subject to the specific terms of the 2015 and 2022 notes and related indenture , that is the greater of ( a ) par value and ( b ) the present value of future payments that will not be paid because of an early redemption , which is discounted at a fixed spread over a comparable treasury security . the 2015 notes and 2022 notes were issued at a discount of $ 5 million that is being amortized over the term of the notes . the company incurred approximately $ 7 million of debt issuance costs , which are being amortized over the respective terms of the 2015 notes and 2022 notes . at december 31 , 2013 , $ 5 million of unamortized debt issuance costs was included in other assets on the consolidated statement of financial condition . 2013 and 2021 notes . in may 2011 , the company issued $ 1.5 billion in aggregate principal amount of unsecured unsubordinated obligations . these notes were issued as two separate series of senior debt securities including $ 750 million of 4.25% ( 4.25 % ) notes maturing in may 2021 and $ 750 million of floating rate notes ( 201c2013 floating rate notes 201d ) , which were repaid in may 2013 at maturity . net proceeds of this offering were used to fund the repurchase of blackrock 2019s series b preferred from affiliates of merrill lynch & co. , inc . ( 201cmerrill lynch 201d ) . interest on the 4.25% ( 4.25 % ) notes due in 2021 ( 201c2021 notes 201d ) is payable semi-annually on may 24 and november 24 of each year , which commenced november 24 , 2011 , and is approximately $ 32 million per year . the 2021 notes may be redeemed prior to maturity at any time in whole or in part at the option of the company at a 201cmake-whole 201d redemption price . the 2021 notes were issued at a discount of $ 4 million that is being amortized over the term of the notes . the company incurred approximately $ 7 million of debt issuance costs for the $ 1.5 billion note issuances , which are being amortized over the respective terms of the notes . at december 31 , 2013 , $ 3 million of unamortized debt issuance costs was included in other assets on the consolidated statement of financial condition . in may 2011 , in conjunction with the issuance of the 2013 floating rate notes , the company entered into a $ 750 million notional interest rate swap maturing in 2013 to hedge the future cash flows of its obligation at a fixed rate of 1.03% ( 1.03 % ) . during the second quarter of 2013 , the interest rate swap matured and the 2013 floating rate notes were fully repaid . 2012 , 2014 and 2019 notes . in december 2009 , the company issued $ 2.5 billion in aggregate principal amount of unsecured and unsubordinated obligations . these notes were issued as three separate series of senior debt securities including $ 0.5 billion of 2.25% ( 2.25 % ) notes , which were repaid in december 2012 , $ 1.0 billion of 3.50% ( 3.50 % ) notes and $ 1.0 billion of 5.0% ( 5.0 % ) notes maturing in december 2014 and 2019 , respectively . net proceeds of this offering were used to repay borrowings under the cp program , which was used to finance a portion of the acquisition of barclays global investors ( 201cbgi 201d ) from barclays on december 1 , 2009 ( the 201cbgi transaction 201d ) , and for general corporate purposes . interest on the 2014 notes and 2019 notes of approximately $ 35 million and $ 50 million per year , respectively , is payable semi-annually in arrears on june 10 and december 10 of each year . these notes may be redeemed prior to maturity at any time in whole or in part at the option of the company at a 201cmake-whole 201d redemption price . these notes were issued collectively at a discount of $ 5 million , which is being amortized over the respective terms of the notes . the company incurred approximately $ 13 million of debt issuance costs , which are being amortized over the respective terms of these notes . at december 31 , 2013 , $ 4 million of unamortized debt issuance costs was included in other assets on the consolidated statement of financial condition . 2017 notes . in september 2007 , the company issued $ 700 million in aggregate principal amount of 6.25% ( 6.25 % ) senior unsecured and unsubordinated notes maturing on september 15 , 2017 ( the 201c2017 notes 201d ) . a portion of the net proceeds of the 2017 notes was used to fund the initial cash payment for the acquisition of the fund of funds business of quellos and the remainder was used for general corporate purposes . interest is payable semi-annually in arrears on march 15 and september 15 of each year , or approximately $ 44 million per year . the 2017 notes may be redeemed prior .

Questions:
what is the difference between the fair and the carrying value of all notes?
and what was that carrying value for only the notes due in 2014?
what was it for 2015?
what was, then, the total carrying value for both years?
and including the 2017 notes, what becomes this total?

Answers:
345
1000
750
1750
2448