derivative instruments see quantitative and qualitative disclosures about market risk for a discussion of derivative instruments and associated market risk .
dividends to stockholders dividends of $ 0.92 per common share or $ 637 million were paid during 2007 .
on january 27 , 2008 , our board of directors declared a dividend of $ 0.24 cents per share on our common stock , payable march 10 , 2008 , to stockholders of record at the close of business on february 20 , 2008 .
liquidity and capital resources our main sources of liquidity and capital resources are internally generated cash flow from operations , committed credit facilities and access to both the debt and equity capital markets .
our ability to access the debt capital market is supported by our investment grade credit ratings .
our senior unsecured debt is currently rated investment grade by standard and poor 2019s corporation , moody 2019s investor services , inc .
and fitch ratings with ratings of bbb+ , baa1 , and bbb+ .
these ratings were reaffirmed in july 2007 after the western acquisition was announced .
because of the alternatives available to us , including internally generated cash flow and potential asset sales , we believe that our short-term and long-term liquidity is adequate to fund operations , including our capital spending programs , stock repurchase program , repayment of debt maturities and any amounts that ultimately may be paid in connection with contingencies .
we have a committed $ 3.0 billion revolving credit facility with third-party financial institutions terminating in may 2012 .
at december 31 , 2007 , there were no borrowings against this facility and we had no commercial paper outstanding under our u.s .
commercial paper program that is backed by this revolving credit facility .
on july 26 , 2007 , we filed a universal shelf registration statement with the securities and exchange commission , under which we , as a well-known seasoned issuer , have the ability to issue and sell an indeterminate amount of various types of debt and equity securities .
our cash-adjusted debt-to-capital ratio ( total debt-minus-cash to total debt-plus-equity-minus-cash ) was 22 percent at december 31 , 2007 , compared to six percent at year-end 2006 as shown below .
this includes $ 498 million of debt that is serviced by united states steel .
( dollars in millions ) 2007 2006 .

<i>(Dollars in millions)</i>
2007
2006
Long-term debt due within one year
$1,131
$471
Long-term debt
6,084
3,061
Total debt
$7,215
$3,532
Cash
$1,199
$2,585
Trusteed funds from revenue bonds<sup>(a)</sup>
$744
$–
Equity
$19,223
$14,607
Calculation:
Total debt
$7,215
$3,532
Minus cash
1,199
2,585
Minus trusteed funds from revenue bonds
744
–
Total debt minus cash
5,272
947
Total debt
7,215
3,532
Plus equity
19,223
14,607
Minus cash
1,199
2,585
Minus trusteed funds from revenue bonds
744
–
Total debt plus equity minus cash
$24,495
$15,554
Cash-adjusted debt-to-capital ratio
22%
6%

( a ) following the issuance of the $ 1.0 billion of revenue bonds by the parish of st .
john the baptist , the proceeds were trusteed and will be disbursed to us upon our request for reimbursement of expenditures related to the garyville refinery expansion .
the trusteed funds are reflected as other noncurrent assets in the accompanying consolidated balance sheet as of december 31 , 2007. .

Question: Analyse this data from a financial earnings document. in millions , what would 2007 total debt increase to if the company fully draws its available revolver?
Choices:
7599960
7296
10215.0
4215
17215
Correct choice index: 2