The following tables present information about industry segments and geographic areas for the three and nine months ended September 30, 2014 and 2013 (in thousands):



	For the three months ended September 30,
	2014			2013
Revenues from unrelated entities:
United States electrical construction and facilities services	$	314,666		$	340,529
United States mechanical construction and facilities services	565,227			616,403
United States building services	427,564			457,777
United States industrial services	172,452			110,879
Total United States operations	1,479,909			1,525,588
United Kingdom building services	86,802			79,727
Total worldwide operations	$	1,566,711		$	1,605,315

Total revenues:
United States electrical construction and facilities services	$	316,409		$	347,488
United States mechanical construction and facilities services	569,794			629,481
United States building services	438,864			471,576
United States industrial services	172,608			111,212
Less intersegment revenues	(17,766		)	(34,169		)
Total United States operations	1,479,909			1,525,588
United Kingdom building services	86,802			79,727
Total worldwide operations	$	1,566,711		$	1,605,315



	For the nine months ended September 30,
	2014			2013
Revenues from unrelated entities:
United States electrical construction and facilities services	$	958,295		$	984,443
United States mechanical construction and facilities services	1,616,794			1,741,483
United States building services	1,293,750			1,361,392
United States industrial services	581,642			335,358
Total United States operations	4,450,481			4,422,676
United Kingdom building services	259,688			261,572
Total worldwide operations	$	4,710,169		$	4,684,248

Total revenues:
United States electrical construction and facilities services	$	971,361		$	1,000,598
United States mechanical construction and facilities services	1,632,511			1,780,112
United States building services	1,324,816			1,395,607
United States industrial services	582,426			337,282
Less intersegment revenues	(60,633		)	(90,923		)
Total United States operations	4,450,481			4,422,676
United Kingdom building services	259,688			261,572
Total worldwide operations	$	4,710,169		$	4,684,248



	For the three months ended September 30,
	2014			2013
Operating income (loss):
United States electrical construction and facilities services	$	20,666		$	23,971
United States mechanical construction and facilities services	30,206			27,421
United States building services	19,388			23,285
United States industrial services	7,385			308
Total United States operations	77,645			74,985
United Kingdom building services	3,082			3,192
Corporate administration	(18,481		)	(19,532		)
Restructuring expenses	(398		)	(601		)
Gain on sale of building	11,749			—
Total worldwide operations	73,597			58,044
Other corporate items:
Interest expense	(2,397		)	(2,351		)
Interest income	186			234
Income from continuing operations before income taxes	$	71,386		$	55,927



	For the nine months ended September 30,
	2014			2013
Operating income (loss):
United States electrical construction and facilities services	$	67,162		$	68,147
United States mechanical construction and facilities services	78,052			56,809
United States building services	53,606			52,928
United States industrial services	43,155			26,320
Total United States operations	241,975			204,204
United Kingdom building services	12,647			11,845
Corporate administration	(50,192		)	(50,953		)
Restructuring expenses	(799		)	(652		)
Gain on sale of building	11,749			—
Total worldwide operations	215,380			164,444
Other corporate items:
Interest expense	(6,887		)	(5,978		)
Interest income	641			862
Income from continuing operations before income taxes	$	209,134		$	159,328



	September 30, 2014		December 31, 2013
Total assets:
United States electrical construction and facilities services	$	333,416	$	329,742
United States mechanical construction and facilities services	805,382		795,256
United States building services	749,382		756,785
United States industrial services	958,856		940,916
Total United States operations	2,847,036		2,822,699
United Kingdom building services	135,728		160,828
Corporate administration	451,903		482,388
Total worldwide operations	$	3,434,667	$	3,465,915