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Other intangible assets, net (Tables)
 6 Months Ended
Jun. 30, 2011
Notes to Financial Statements [Abstract]  
Other Intangible Assets
   
Cost
 
Accumulated
amortization
 
Net book
value
 
   
(in thousands)
 
Assets subject to amortization:
                   
Customer related intangibles
 
$
960,013
 
$
(235,885
)
$
724,128
 
Unpatented technology
   
175,819
   
(54,376
)
 
121,443
 
Software
   
49,095
   
(30,182
)
 
18,913
 
Patents and other protective rights
   
25,505
   
(15,292
)
 
10,213
 
Trade secrets
   
1,604
   
(1,174
)
 
430
 
Assets not subject to amortization:
                   
Trade names
   
229,386
   
-
   
229,386
 
Balances at December 31, 2010
 
$
1,441,422
 
$
(336,909
)
$
1,104,513
 
Assets subject to amortization:
                   
Customer related intangibles
 
$
1,014,863
 
$
(269,668
)
$
745,195
 
Unpatented technology
   
195,347
   
(65,424
)
 
129,923
 
Software
   
49,097
   
(33,603
)
 
15,494
 
Patents and other protective rights
   
26,272
   
(17,045
)
 
9,227
 
Trade secrets
   
1,604
   
(1,365
)
 
239
 
Assets not subject to amortization:
                   
Trade names
   
 232,981
   
-
   
 232,981
 
Balances at June 30, 2011
 
$
1,520,164
 
$
(387,105
)
$
1,133,059