[["$ in millions", "as of december 2013", "as of december 2012"], ["total assets", "$ 911507", "$ 938555"], ["unsecured long-term borrowings", "$ 160965", "$ 167305"], ["total shareholders 2019 equity", "$ 78467", "$ 75716"], ["leverage ratio", "11.6x", "12.4x"], ["debt to equity ratio", "2.1x", "2.2x"]]