[["", "2008", "2007"], ["balance at beginning of period", "$ 134.8", "$ 266.9"], ["increases as a result of tax positions taken during a prior year", "22.8", "7.9"], ["decreases as a result of tax positions taken during a prior year", "-21.3 ( 21.3 )", "-156.3 ( 156.3 )"], ["settlements with taxing authorities", "-4.5 ( 4.5 )", "-1.0 ( 1.0 )"], ["lapse of statutes of limitation", "-1.7 ( 1.7 )", "-2.4 ( 2.4 )"], ["increases as a result of tax positions taken during the current year", "18.7", "19