Annual report pursuant to Section 13 and 15(d)

Income Taxes (Unrecognized Tax Benefits) (Details)

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Income Taxes (Unrecognized Tax Benefits) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income Taxes [Abstract]      
Unrecognized tax benefits, beginning balance $ 79.8 $ 75.2 $ 53.7
Increases for tax positions in prior years 42.1 1.9 23.8
Increases for tax positions in current year 29.5   2.5
Increase due to foreign exchange   0.7 4.7
Settlements (3.5)   (9.1)
Lapses in statutes of limitations (45.8)   (0.4)
Other   2.0  
Unrecognized tax benefits balance, ending balance $ 102.1 $ 79.8 $ 75.2