Revenue from Contract with Customer (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

Disaggregation of Revenue

The following table presents revenues disaggregated by our business models:

	For the Years Ended
	2020						2019						2018
(In thousands)	Domestic Segment		International Segment		Total		Domestic Segment		International Segment		Total		Domestic Segment		International Segment		Total
Licensed software	$	604,707	$	51,512	$	656,219	$	628,958	$	51,627	$	680,585	$	573,034	$	40,544	$	613,578
Technology resale	173,264		23,327		196,591		225,076		21,809		246,885		208,722		36,354		245,076
Subscriptions	354,023		24,185		378,208		333,298		25,417		358,715		300,555		25,154		325,709
Professional services	1,717,873		212,572		1,930,445		1,760,532		231,946		1,992,478		1,574,407		237,056		1,811,463
Managed services	1,120,939		124,488		1,245,427		1,098,695		115,205		1,213,900		1,060,081		94,860		1,154,941
Support and maintenance	881,778		189,001		1,070,779		904,204		200,434		1,104,638		921,336		196,780		1,118,116
Reimbursed travel	27,185		934		28,119		87,364		8,033		95,397		92,131		5,311		97,442
Total revenues	$	4,879,769	$	626,019	$	5,505,788	$	5,038,127	$	654,471	$	5,692,598	$	4,730,266	$	636,059	$	5,366,325

The following table presents our revenues disaggregated by timing of revenue recognition:

	For the Years Ended
	2020						2019						2018
(In thousands)	Domestic Segment		International Segment		Total		Domestic Segment		International Segment		Total		Domestic Segment		International Segment		Total
Revenue recognized over time	$	4,557,358	$	585,316	$	5,142,674	$	4,565,172	$	600,953	$	5,166,125	$	4,271,934	$	569,780	$	4,841,714
Revenue recognized at a point in time	322,411		40,703		363,114		472,955		53,518		526,473		458,332		66,279		524,611
Total revenues	$	4,879,769	$	626,019	$	5,505,788	$	5,038,127	$	654,471	$	5,692,598	$	4,730,266	$	636,059	$	5,366,325