XML 95 R78.htm IDEA: XBRL DOCUMENT v3.20.4
Income Taxes (Summary of Income Tax Contingencies) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Gross unrecognized tax benefits:    
Gross unrecognized income tax benefits, beginning of period $ 210.7 $ 166.1
Additions for tax positions of the current year 32.0 32.8
Additions for tax positions of prior years 9.4 20.7
Reductions for tax positions of prior years for:    
Changes in judgments 9.1 (4.6)
Settlements during the year (52.9) (0.7)
Lapses of applicable statute of limitations (0.2) (0.8)
Foreign currency translation and other 19.8 (2.8)
Gross unrecognized income tax benefits, end of period $ 227.9 $ 210.7