on april 3 , 2014 , consistent with our 2014 capital plan , our board of directors approved an increase to pnc 2019s quarterly common stock dividend from 44 cents per common share to 48 cents per common share beginning with the may 5 , 2014 dividend payment . in connection with the 2015 ccar , pnc submitted its 2015 capital plan , as approved by its board of directors , to the federal reserve in january 2015 . pnc expects to receive the federal reserve 2019s response ( either a non-objection or objection ) to the capital plan submitted as part of the 2015 ccar in march 2015 . see the supervision and regulation section in item 1 of this report for additional information regarding the federal reserve 2019s ccar process and the factors the federal reserve takes into consideration in evaluating capital plans , qualitative and quantitative liquidity risk management standards proposed by the u.s . banking agencies , and final rules issued by the federal reserve that make certain modifications to the federal reserve 2019s capital planning and stress testing rules . see table 42 for information on affiliate purchases of notes issued by pnc bank during 2014 . on february 6 , 2015 , pnc used $ 600 million of parent company/non-bank subsidiary cash to purchase floating rate senior notes that were issued by pnc bank to an affiliate on that same date . parent company liquidity 2013 sources the principal source of parent company liquidity is the dividends it receives from its subsidiary bank , which may be impacted by the following : 2022 bank-level capital needs , 2022 laws and regulations , 2022 corporate policies , 2022 contractual restrictions , and 2022 other factors . there are statutory and regulatory limitations on the ability of national banks to pay dividends or make other capital distributions or to extend credit to the parent company or its non-bank subsidiaries . the amount available for dividend payments by pnc bank to the parent company without prior regulatory approval was approximately $ 1.5 billion at december 31 , 2014 . see note 20 regulatory matters in the notes to consolidated financial statements in item 8 of this report for a further discussion of these limitations . we provide additional information on certain contractual restrictions in note 12 capital securities of a subsidiary trust and perpetual trust securities in the notes to consolidated financial statements in item 8 of this report . in addition to dividends from pnc bank , other sources of parent company liquidity include cash and investments , as well as dividends and loan repayments from other subsidiaries and dividends or distributions from equity investments . we can also generate liquidity for the parent company and pnc 2019s non-bank subsidiaries through the issuance of debt and equity securities , including certain capital instruments , in public or private markets and commercial paper . we have an effective shelf registration statement pursuant to which we can issue additional debt , equity and other capital instruments . during 2014 , we issued the following parent company debt under our shelf registration statement : 2022 $ 750 million of subordinated notes with a maturity date of april 29 , 2024 . interest is payable semi- annually , at a fixed rate of 3.90% ( 3.90 % ) , on april 29 and october 29 of each year , beginning on october 29 , total parent company senior and subordinated debt and hybrid capital instruments decreased to $ 10.1 billion at december 31 , 2014 from $ 10.7 billion at december 31 , 2013 due to the following activity in the period . table 45 : parent company senior and subordinated debt and hybrid capital instruments .

Table: in billions 2014 january 1 $ 10.7 issuances .8 maturities -1.4 ( 1.4 ) december 31 $ 10.1

on october 16 , 2014 , the parent company established a $ 5.0 billion commercial paper program to provide additional liquidity . as of december 31 , 2014 , there were no issuances outstanding under this program . following the establishment of this parent company program , pnc funding corp terminated its $ 3.0 billion commercial paper program . note 17 equity in the notes to consolidated financial statements in item 8 of this report describes the 16885192 warrants outstanding , each to purchase one share of pnc common stock at an exercise price of $ 67.33 per share . these warrants were sold by the u.s . treasury in a secondary public offering in may 2010 after the u.s . treasury exchanged its tarp warrant . these warrants will expire december 31 , 2018 , and are considered in the calculation of diluted earnings per common share in note 16 earnings per share in the notes to consolidated financial statements in item 8 of this report . status of credit ratings the cost and availability of short-term and long-term funding , as well as collateral requirements for certain derivative instruments , is influenced by pnc 2019s debt ratings . in general , rating agencies base their ratings on many quantitative and qualitative factors , including capital adequacy , liquidity , asset quality , business mix , level and quality of earnings , and the current legislative and regulatory environment , including implied government support . in the pnc financial services group , inc . 2013 form 10-k 89 .

Question: by how much did total parent company senior and subordinated debt and hybrid capital instruments decreased at december 31 , 2014 from december 31 , 2013 , in billions?
Answer: 0.6
Calculation: subtract(10.7, 10.1)