v2.4.0.6

Segment And Geographic Information (Reconciliation Of Total Segment Income From Operations To Consolidated Income Before Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Segment And Geographic Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from operations for reportable segments | $ 50,459 | $ 117,331 | $ 138,369 | $ 140,637 | $ 137,052 | $ 107,346 | $ 99,537 | $ 34,429 | $ 446,796 | $ 378,364 | $ 107,257
Interest expense |  |  |  |  |  |  |  |  | (50,992) | (39,875) | (34,957)
Other income, (expense), net |  |  |  |  |  |  |  |  | 5,628 | 4,471 | 6,453
Income before income taxes |  |  |  |  |  |  |  |  | $ 401,432 | $ 342,960 | $ 78,753

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