Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

 v2.3.0.11
Income Taxes (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended 1 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2011
Jan. 31, 2011
Jan. 31, 2011
Upper Limit [Member]
Jan. 31, 2011
Lower Limit [Member]
Income tax provision $ 151.9 $ 99.3 $ 293.9 $ 165.7        
Effective income tax rate     25.50% 33.20%        
Effective income tax rate before discrete items         26.40%      
U.S. statutory tax rate     35.00%          
Increased valuation allowance against deferred tax assets     11.1          
Unrecognized tax benefits           79.8    
Unrecognized tax benefits that would impact on effective tax rate           79.1    
Change in unrecognized tax benefits             50 40
Additional accrued interest relating to unrecognized tax benefits $ 1.9 $ 0.7 $ 2.5 $ 1.3