XML 82 R49.htm IDEA: XBRL DOCUMENT v2.4.0.6
Goodwill And Other Assets (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Goodwill And Other Assets [Abstract]      
Goodwill $ 1,746,762,000 $ 1,601,319,000  
Change in goodwill carrying amount 145,400,000 331,200,000  
Goodwill deductible for tax purpose 104,100,000    
Other intangible assets gross carrying amounts 96,600,000 73,000,000  
Accumulated amortization 31,300,000 21,200,000  
Amortization expense related to other intangible assets 10,300,000 8,500,000 5,200,000
Amortization expense on other intangible assets, 2012 12,500,000    
Amortization expense on other intangible assets, 2013 11,700,000    
Amortization expense on other intangible assets, 2014 10,100,000    
Amortization expense on other intangible assets, 2015 8,000,000    
Amortization expense on other intangible assets, 2016 5,700,000    
Remaining weighted average amortization period of other intangible assets, in years 2.9    
Weighted average amortization period includes amortization expense related to years beyond 2016 17,300,000    
Other assets $ 17,828,000 $ 18,375,000