Consolidated Statement of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Product Information [Line Items]
Revenue	$ 987,535	$ 820,035	$ 2,065,516	$ 1,623,000
Costs of revenue	(718,822)	(601,268)	(1,419,296)	(1,225,189)
Gross profit	268,713	218,767	646,220	397,811
Corporate general and administrative expenses	(29,038)	(37,169)	(65,771)	(68,982)
Gains on divestitures and impairment charges, net	6,162	737	7,428	5,282
Operating income	245,837	182,335	587,877	334,111
Interest expense	(37,435)	(41,767)	(73,247)	(86,118)
Losses on early extinguishment of debt, net	(5,226)	(11)	(5,226)	(150)
Other income (expense), net	655	1,166	996	(81)
Income before income taxes	203,831	141,723	510,400	247,762
(Provision for) benefit from income taxes	(46,042)	(36,170)	(123,656)	(60,208)
Net income	157,789	105,553	386,744	187,554
Net income attributable to noncontrolling interests	(84)	(45)	(160)	(105)
Net income attributable to common stockholders	$ 157,705	$ 105,508	$ 386,584	$ 187,449
Basic earnings per share:
Net income attributable to common stockholders, basic	$ 0.94	$ 0.59	$ 2.29	$ 1.04
Basic weighted average number of shares	168,450	177,902	169,180	179,378
Diluted earnings per share:
Net income attributable to common stockholders, diluted	$ 0.92	$ 0.59	$ 2.25	$ 1.03
Diluted weighted average number of shares	170,863	179,666	171,616	181,639
Dividends declared per share	$ 210	$ 190
Product [Member]
Product Information [Line Items]
Revenue	$ 519,777	$ 414,596	$ 1,074,368	$ 792,479
Costs of revenue	(248,067)	(207,102)	(499,759)	(403,550)
Service [Member]
Product Information [Line Items]
Revenue	391,617	354,799	855,476	722,327
Costs of revenue	(202,378)	(173,515)	(405,356)	(371,039)
Product and Service, Other [Member]
Product Information [Line Items]
Revenue	76,141	50,640	135,672	108,194
Costs of revenue	$ (268,377)	$ (220,651)	$ (514,181)	$ (450,600)