hlikk has four revolving credit facilities in support of operations . two of the credit facilities have no amounts drawn as of december 31 , 2013 with borrowing limits of approximately a55 billion , or $ 48 each , and individually have expiration dates of january 5 , 2015 and september 30 , 2014 . in december 2013 , hlikk entered into two new revolving credit facility agreements with two japanese banks in order to finance certain withholding taxes on mutual fund gains , that are subsequently credited when hlikk files its 2019 income tax returns . at december 31 , 2013 , hlikk had drawn the total borrowing limits of a55 billion , or $ 48 , and a520 billion , or $ 190 on these credit facilities . the a55 billion credit facility accrues interest at a variable rate based on the one month tokyo interbank offering rate ( tibor ) plus 3 bps , which as of december 31 , 2013 the interest rate was 15 bps , and the a520 billion credit facility accrues interest at a variable rate based on tibor plus 3 bps , or the actual cost of funding , which as of december 31 , 2013 the interest rate was 20 bps . both of the credit facilities expire on september 30 , 2014 . derivative commitments certain of the company 2019s derivative agreements contain provisions that are tied to the financial strength ratings of the individual legal entity that entered into the derivative agreement as set by nationally recognized statistical rating agencies . if the legal entity 2019s financial strength were to fall below certain ratings , the counterparties to the derivative agreements could demand immediate and ongoing full collateralization and in certain instances demand immediate settlement of all outstanding derivative positions traded under each impacted bilateral agreement . the settlement amount is determined by netting the derivative positions transacted under each agreement . if the termination rights were to be exercised by the counterparties , it could impact the legal entity 2019s ability to conduct hedging activities by increasing the associated costs and decreasing the willingness of counterparties to transact with the legal entity . the aggregate fair value of all derivative instruments with credit-risk-related contingent features that are in a net liability position as of december 31 , 2013 was $ 1.2 billion . of this $ 1.2 billion the legal entities have posted collateral of $ 1.4 billion in the normal course of business . in addition , the company has posted collateral of $ 44 associated with a customized gmwb derivative . based on derivative market values as of december 31 , 2013 , a downgrade of one level below the current financial strength ratings by either moody 2019s or s&p could require approximately an additional $ 12 to be posted as collateral . based on derivative market values as of december 31 , 2013 , a downgrade by either moody 2019s or s&p of two levels below the legal entities 2019 current financial strength ratings could require approximately an additional $ 33 of assets to be posted as collateral . these collateral amounts could change as derivative market values change , as a result of changes in our hedging activities or to the extent changes in contractual terms are negotiated . the nature of the collateral that we would post , if required , would be primarily in the form of u.s . treasury bills , u.s . treasury notes and government agency securities . as of december 31 , 2013 , the aggregate notional amount and fair value of derivative relationships that could be subject to immediate termination in the event of rating agency downgrades to either bbb+ or baa1 was $ 536 and $ ( 17 ) , respectively . insurance operations current and expected patterns of claim frequency and severity or surrenders may change from period to period but continue to be within historical norms and , therefore , the company 2019s insurance operations 2019 current liquidity position is considered to be sufficient to meet anticipated demands over the next twelve months , including any obligations related to the company 2019s restructuring activities . for a discussion and tabular presentation of the company 2019s current contractual obligations by period , refer to off-balance sheet arrangements and aggregate contractual obligations within the capital resources and liquidity section of the md&a . the principal sources of operating funds are premiums , fees earned from assets under management and investment income , while investing cash flows originate from maturities and sales of invested assets . the primary uses of funds are to pay claims , claim adjustment expenses , commissions and other underwriting expenses , to purchase new investments and to make dividend payments to the hfsg holding company . the company 2019s insurance operations consist of property and casualty insurance products ( collectively referred to as 201cproperty & casualty operations 201d ) and life insurance and legacy annuity products ( collectively referred to as 201clife operations 201d ) . property & casualty operations property & casualty operations holds fixed maturity securities including a significant short-term investment position ( securities with maturities of one year or less at the time of purchase ) to meet liquidity needs . as of december 31 , 2013 , property & casualty operations 2019 fixed maturities , short-term investments , and cash are summarized as follows: .
what percent of total amount is held on fixed maturities?
.