[["in millions", "december 312012", "december 312011"], ["commercial mortgages at fair value", "$ 772", "$ 843"], ["commercial mortgages at lower of cost or market", "620", "451"], ["total commercial mortgages", "1392", "1294"], ["residential mortgages at fair value", "2096", "1415"], ["residential mortgages at lower of cost or market", "124", "107"], ["total residential mortgages", "2220", "1522"], ["other", "81", "120"], ["total", "$ 3693", "$ 2936"]]