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Shareholders' Equity
 6 Months Ended
Jun. 30, 2012
Shareholders' Equity [Abstract]  
Shareholders' Equity
(11) Shareholders' Equity

The components of Accumulated other comprehensive income, net of tax, were as follows:

   
June 30,
   
December 31,
 
   
2012
   
2011
 
Foreign currency translation
 
$
151.0
   
$
186.6
 
Translation loss on net investment hedge
   
(33.8
)
   
(43.2
)
Translation loss on long-term intercompany loans
   
(64.8
)
   
(89.1
)
Unrealized gain on investments, net of income taxes of $3.3 and $2.8, respectively
   
9.9
     
8.2
 
Defined benefit pension plans, net of income taxes of $19.4 and $19.5, respectively
   
(26.2
)
   
(26.5
)
Retiree health care plan, net of income taxes of $0.5 for both dates
   
(0.7
)
   
(0.7
)
Accumulated other comprehensive income
 
$
35.4
   
$
35.3
 

In each of November 2011 and in December 2010, the Board of Directors authorized the repurchase of 3.0 million shares of our common stock, for a total of 6.0 million shares. Share repurchases may be made from time to time through a variety of methods, including open market purchases, block transactions, privately negotiated transactions, accelerated share repurchase programs, forward repurchase agreements or similar facilities. During the first half of 2012, we repurchased a total of 878,897 shares, comprised of 619,257 shares under the 2010 authorization and 259,640 shares under the 2011 authorization. There are no shares remaining under the 2010 authorization. Under the 2011 authorization, there were 2.7 million shares remaining authorized for repurchase as of June 30, 2012.

On May 2, 2012, the Board of Directors declared a semi-annual cash dividend of $0.43 per share, which was paid on June 15, 2012 to shareholders of record on June 1, 2012.