Business Combinations Pro Forma Information (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Restat [Member]
Business Acquisition, Pro Forma Information [Abstract]    
Revenue $ 3,830,243 $ 10,865,244
Gross profit 312,863 863,506
Net income attributable to the Company $ 75,996 $ 199,003
Earnings per share attributable to the Company:    
Basic (in dollars per share) $ 0.37 $ 0.97
Diluted (in dollars per share) $ 0.37 $ 0.96
Weighted average number of shares used in computing earnings per share:    
Basic (in shares) 206,203,263 205,920,803
Diluted (in shares) 206,824,618 206,636,923