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Components of Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2012
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Components of accumulated other comprehensive loss
The components of Accumulated other comprehensive loss, net of the effect of income taxes, are as follows:
Accumulated Other Comprehensive Loss—Net of Tax
 
 
December 31
(In thousands)
 
2012
 
2011
Cumulative foreign exchange translation adjustments
 
$
62,308

 
$
51,313

Effective portion of cash flow hedges
 
(8,139
)
 
(3,807
)
Cumulative unrecognized actuarial losses on pension obligations
 
(465,286
)
 
(411,641
)
Unrealized loss on marketable securities
 
(51
)
 
(56
)
Accumulated other comprehensive loss
 
$
(411,168
)
 
$
(364,191
)