Sewickley Company Use the Liabilities Section of Sewickley Company's Balance

Sewickley Company Use the liabilities section of Sewickley Company's balance sheet to answer the questions that follow.
Sewickley Company
Consolidated Balance Sheets
(in millions)

$\begin{array}{l}&\text { December } 31,\\&2017&2016\\\text { Current liabilities }\\\text { Short-term borrowings } & \$ 354 & \$ 202 \\\text { Accounts payable and other current liabilities } & 4,461 & 4,529 \\\text { Income taxes payable } & 183 & 64 \\\text { Total current liabilities } & \$ 4,998 & \$ 4,795\\\\\text { Long-term debt } & \$ 2,651 & \$ 3,009 \\\text { Other long-term liabilities } & 3,876 & 3,960 \\\text { Deferred income taxes (assume all are long-term) } & 1,496 & 1,367\\\end{array}$ ​
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-Review the consolidated balance sheets of Sewickley Company.
Required:
Which one of the liabilities shown in the balance sheets is used in the calculation of the debt-to-equity ratio?
If we can assume that the stockholders' equity total remained relatively constant for the two years, how would the ratio change (increase/decrease) from 2016 to 2017? What would this say about the company's financial position?