Consolidated Statements of Operations (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Income Statement [Abstract]        
Revenue $ 5,541,713 $ 3,614,148 $ 15,842,000 $ 10,251,295
Cost of revenue 5,190,165 3,326,360 14,845,976 9,450,546
Gross profit 351,548 287,788 996,024 800,749
Expenses:        
Selling, general and administrative 131,897 110,454 389,048 310,839
Depreciation of property and equipment 19,442 9,979 44,904 24,887
Amortization of intangible assets 52,216 47,220 162,179 147,368
Total operating expenses 203,555 167,653 596,131 483,094
Operating income 147,993 120,135 399,893 317,655
Interest and other expense, net 17,918 9,026 44,882 30,972
Income before income taxes 130,075 111,109 355,011 286,683
Income tax expense 33,763 27,981 95,113 75,616
Net income 96,312 83,128 259,898 211,067
Less: Net income attributable to non-controlling interest 14,344 10,190 43,053 23,303
Net income attributable to the Company $ 81,968 $ 72,938 $ 216,845 $ 187,764
Earnings per share attributable to the Company:        
Basic (in dollars per share) $ 0.40 $ 0.35 $ 1.05 $ 0.91
Diluted (in dollars per share) $ 0.39 $ 0.35 $ 1.05 $ 0.91
Weighted average number of shares used in computing earnings per share:        
Basic (in shares) 207,447,647 206,203,263 206,973,924 205,920,803
Diluted (in shares) 207,875,252 206,824,618 207,470,739 206,636,923