v2.4.0.6

SUBSEQUENT EVENTS (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified | 12 Months Ended |  | 1 Months Ended
--- | --- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Feb. 01, 2012 Dividend declared | Jan. 27, 2012 Common stock repurchased
Subsequent events |  |  |  |  |
Quarterly cash dividend (in dollars per share) |  |  |  | $ 0.12 |
Amount of quarterly cash dividend |  |  |  | $ 10,400,000 |
Number of shares repurchased | 13.6 | 23.1 |  |  | 1.8
Aggregate consideration for shares repurchased | $ 518,637,000 | $ 530,885,000 | $ 554,203,000 |  | $ 74,100,000

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