XML 48 R35.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Stockholders' Equity and Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2011
Stockholders' Equity and Accumulated Other Comprehensive Loss |
Schedule of components of accumulated other comprehensive loss, net of related taxes |
|  | December 31, |
(Thousands of dollars) |  | 2011 |  | 2010 |  | 2009 |
Cumulative foreign currency translation adjustment |  | $ | (93,669 | ) | $ | (81,280 | ) | $ | (77,576 | )
Unrealized gain (loss) on investments |  | (311 | ) | 445 |  | 2,579 |
Unrecognized pension cost |  | (62,085 | ) | (43,072 | ) | (39,789 | )
Accumulated other comprehensive loss |  | $ | (156,065 | ) | $ | (123,907 | ) | $ | (114,786 | )

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References No definition available. + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration