XML 81 R64.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Summary of Income Tax Contingencies) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Gross unrecognized tax benefits:    
Gross unrecognized income tax benefits, beginning of period $ 163.4 $ 139.9
Additions for tax positions of the current year 3.8 16.4
Additions for tax positions of prior years 13.1 4.8
Reductions for tax positions of prior years for:    
Changes in judgments (1.6) 1.4
Settlements during the year (0.7) (0.4)
Lapses of applicable statute of limitations (4.4) (14.4)
Gross unrecognized income tax benefits, end of period 166.1 163.4
Unrecognized Tax Benefits, Foreign Currency Translation $ 7.5 $ (15.7)