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Goodwill and Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in Goodwill
Changes in the carrying amount of goodwill for the nine months ended September 30, 2012 are as follows (in thousands):
 
 
 
 
 
 
 
 
 
Long-Term Care Group
 
Specialty Care Group
 
Total
Goodwill balance as of December 31, 2011
 
$
3,571,951

 
$
678,628

 
$
4,250,579

Goodwill acquired in the nine months ended September 30, 2012
 
20,610

 
—

 
20,610

Disposition of businesses
 
(14,258
)
 
—

 
(14,258
)
Other
 
(546
)
 
—

 
(546
)
Goodwill balance as of September 30, 2012
 
3,577,757

 
678,628

 
4,256,385