Segment Information

9 Months Ended

Sep. 30, 2019

Our reportable segments reflect certain reclassifications of prior year amounts from our United States mechanical construction and facilities services segment to our United States industrial services segment due to changes in our internal reporting structure.

We have the following reportable segments, which provide services associated with the design, integration, installation, start-up, operation and maintenance of various systems: (a) United States electrical construction and facilities services (involving systems for electrical power transmission and distribution; premises electrical and lighting systems; process instrumentation in the refining, chemical processing, food processing and mining industries; low-voltage systems, such as fire alarm, security and process control; voice and data communication; roadway and transit lighting; and fiber optic lines); (b) United States mechanical construction and facilities services (involving systems for heating, ventilation, air conditioning, refrigeration and clean-room process ventilation; fire protection; plumbing, process and high-purity piping; controls and filtration; water and wastewater treatment; central plant heating and cooling; cranes and rigging; millwrighting; and steel fabrication, erection and welding); (c) United States building services; (d) United States industrial services; and (e) United Kingdom building services. The “United States building services” and “United Kingdom building services” segments principally consist of those operations which provide a portfolio of services needed to support the operation and maintenance of customers’ facilities, including commercial and government site-based operations and maintenance; facility maintenance and services, including reception, security and catering services; outage services to utilities and industrial plants; military base operations support services; mobile mechanical maintenance and services; floor care and janitorial services; landscaping, lot sweeping and snow removal; facilities management; vendor management; call center services; installation and support for building systems; program development, management and maintenance for energy systems; technical consulting and diagnostic services; infrastructure and building projects for federal, state and local governmental agencies and bodies; and small modification and retrofit projects, which services are not generally related to customers’ construction programs. The “United States industrial services” segment principally consists of those operations which provide industrial maintenance and services, including those for refineries and petrochemical plants, including on-site repairs, maintenance and service of heat exchangers, towers, vessels and piping; design, manufacturing, repair and hydro blast cleaning of shell and tube heat exchangers and related equipment; refinery turnaround planning and engineering services; specialty welding services; overhaul and maintenance of critical process units in refineries and petrochemical plants; and specialty technical services for refineries and petrochemical plants.

The following tables present information about industry segments and geographic areas for the three and nine months ended September 30, 2019 and 2018 (in thousands):



	For the three months ended September 30,
	2019			2018
Revenues from unrelated entities:
United States electrical construction and facilities services	$	554,637		$	485,974
United States mechanical construction and facilities services	869,188			759,495
United States building services	532,122			473,701
United States industrial services	234,166			227,313
Total United States operations	2,190,113			1,946,483
United Kingdom building services	97,628			100,566
Total worldwide operations	$	2,287,741		$	2,047,049

Total revenues:
United States electrical construction and facilities services	$	556,088		$	486,642
United States mechanical construction and facilities services	877,571			770,617
United States building services	550,002			490,624
United States industrial services	247,258			227,487
Less intersegment revenues	(40,806		)	(28,887		)
Total United States operations	2,190,113			1,946,483
United Kingdom building services	97,628			100,566
Total worldwide operations	$	2,287,741		$	2,047,049



	For the nine months ended September 30,
	2019			2018
Revenues from unrelated entities:
United States electrical construction and facilities services	$	1,652,109		$	1,420,268
United States mechanical construction and facilities services	2,444,683			2,168,127
United States building services	1,567,899			1,389,486
United States industrial services	788,271			610,479
Total United States operations	6,452,962			5,588,360
United Kingdom building services	317,709			312,963
Total worldwide operations	$	6,770,671		$	5,901,323

Total revenues:
United States electrical construction and facilities services	$	1,655,147		$	1,425,190
United States mechanical construction and facilities services	2,465,287			2,195,951
United States building services	1,622,509			1,437,498
United States industrial services	809,510			611,947
Less intersegment revenues	(99,491		)	(82,226		)
Total United States operations	6,452,962			5,588,360
United Kingdom building services	317,709			312,963
Total worldwide operations	$	6,770,671		$	5,901,323



	For the three months ended September 30,
	2019			2018
Operating income (loss):
United States electrical construction and facilities services	$	33,630		$	34,473
United States mechanical construction and facilities services	61,213			59,236
United States building services	35,051			29,315
United States industrial services	5,561			7,637
Total United States operations	135,455			130,661
United Kingdom building services	4,754			4,457
Corporate administration	(24,341		)	(23,113		)
Restructuring expenses	(119		)	(229		)
Total worldwide operations	115,749			111,776
Other corporate items:
Net periodic pension (cost) income	381			615
Interest expense, net	(2,678		)	(2,736		)
Income from continuing operations before income taxes	$	113,452		$	109,655



	For the nine months ended September 30,
	2019			2018
Operating income (loss):
United States electrical construction and facilities services	$	120,380		$	106,309
United States mechanical construction and facilities services	156,152			156,273
United States building services	90,535			68,822
United States industrial services	31,209			12,312
Total United States operations	398,276			343,716
United Kingdom building services	14,371			12,828
Corporate administration	(74,062		)	(65,508		)
Restructuring expenses	(567		)	(693		)
Impairment loss on identifiable intangible assets	—			(907		)
Total worldwide operations	338,018			289,436
Other corporate items:
Net periodic pension (cost) income	1,187			2,069
Interest expense, net	(8,732		)	(8,011		)
Income from continuing operations before income taxes	$	330,473		$	283,494



	September 30, 2019		December 31, 2018
Total assets:
United States electrical construction and facilities services	$	820,229	$	702,112
United States mechanical construction and facilities services	1,228,920		1,080,829
United States building services	984,514		846,221
United States industrial services	872,115		864,622
Total United States operations	3,905,778		3,493,784
United Kingdom building services	163,069		146,379
Corporate administration	463,874		448,644
Total worldwide operations	$	4,532,721	$	4,088,807