Earnings (Losses) Per Share (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net income (loss) (numerator):
Income (loss) from continuing operations, net of tax	$ 68,148	$ 43,971	$ 152,474	$ 87,490
Less: Net (income) loss attributable to noncontrolling interest	394	559	1,063	1,661
Adjusted income (loss) from continuing operations, net of tax - basic	68,542	44,530	153,537	89,151
Add: interest expense on assumed conversion of our 0.94% senior exchangeable notes due 2011, net of tax	0	0	0	0
Adjusted net income (loss) from continuing operations, net of tax - diluted	68,542	44,530	153,537	89,151
Earnings (losses) per share:
Basic from continuing operations	$ 0.24	$ 0.15	$ 0.54	$ 0.31
Diluted from continuing operations	$ 0.23	$ 0.15	$ 0.52	$ 0.31
Income (loss) from discontinued operations, net of tax	$ 123,906	$ (909)	$ 121,736	$ (5,330)
Earnings (losses) per share:
Basic from discontinued operations	$ 0.43		$ 0.42	$ (0.02)
Diluted from discontinued operations	$ 0.42		$ 0.42	$ (0.02)
Shares (denominator):
Weighted-average number of shares outstanding - basic	287,311	285,181	286,712	284,927
Net effect of dilutive stock options, warrants and restricted stock awards based on the if-converted method	6,987	4,615	6,781	5,339
Assumed conversion of our 0.94% senior exchangeable notes due 2011	0	0	0	0
Weighted-average number of shares outstanding - diluted	294,298	289,796	293,493	290,266

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