[["( in millions )", "2010", "2009"], ["refundable income tax", "$ 61.0", "$ 24.1"], ["net deferred income taxes ( note 14 )", "18.3", "23.8"], ["prepaid technology license and maintenance contracts", "18.0", "17.0"], ["forward contract receivable ( note 20 )", "11.8", "27.3"], ["receivables from brokers", "11.2", "8.8"], ["other prepaid expenses", "9.6", "13.5"], ["prepaid insurance", "6.3", "7.0"], ["cboe exercise rights privilege", "2014", "39.8"], ["other", "9.9", "4.3"], ["total", "$ 146.1", "$ 165