Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes in carrying amount of goodwill

	CPE			N & C			Enterprise			Total
Goodwill		1,391,171			1,003,654			—			2,394,825
Accumulated impairment losses		—			(378,656	)		—			(378,656	)
Balance as of December 31, 2016	$	1,391,171		$	624,998		$	—		$	2,016,169
Changes in year 2017:
Goodwill acquired, net		—			—			318,034			318,034
Impairment		—			(51,200	)		—			(51,200	)
Other		(4,491	)		—			—			(4,491	)
Balance as of December 31, 2017	$	1,386,680		$	573,798		$	318,034		$	2,278,512
Goodwill		1,386,680			1,003,654			318,034			2,708,368
Accumulated impairment losses		—			(429,856	)		—			(429,856	)
Balance as of December 31, 2017	$	1,386,680		$	573,798		$	318,034		$	2,278,512
Changes in year 2018:
Acquisition accounting adjustments		—			—			(29,061	)		(29,061	)
Impairment		—			(3,400	)		—			(3,400	)
Other		(5,863	)		454			—			(5,409	)
Balance as of December 31, 2018	$	1,380,817		$	570,852		$	288,973		$	2,240,642
Goodwill		1,380,817			1,004,108			288,973			2,673,898
Accumulated impairment losses		—			(433,256	)		—			(433,256	)
Balance as of December 31, 2018	$	1,380,817		$	570,852		$	288,973		$	2,240,642

Schedule of gross carrying amount and accumulated amortization of acquired intangible assets

	December 31, 2018						December 31, 2017
	Gross Amount		Accumulated Amortization		Net Book Value		Gross Amount		Accumulated Amortization		Net Book Value
Definite-lived intangible assets:
Customer relationships	$	1,762,750	$	952,308	$	810,442	$	1,672,470	$	780,655	$	891,815
Developed technology, patents & licenses		1,482,200		956,012		526,188		1,521,893		771,200		750,693
Trademarks, trade and domain names		75,772		64,257		11,515		87,472		41,885		45,587
Backlog		16,500		16,386		114		35,000		5,833		29,167
Sub-total	$	3,337,222	$	1,988,963	$	1,348,259	$	3,316,835	$	1,599,573	$	1,717,262
Indefinite-lived intangible assets:
Trademarks and trade names		55,400		—		55,400		—		—		—
In-process research and development		—		—		—		54,100		—		54,100
Sub-total		55,400		—		55,400		54,100		—		54,100
Total	$	3,392,622	$	1,988,963	$	1,403,659	$	3,370,935	$	1,599,573	$	1,771,362

Schedule of amortization of acquired intangible assets

	Years Ended December 31,
	2018		2017		2016
Cost of sales	$	3,558	$	3,174	$	2,963
Selling, general & administrative expense		3,955		3,835		4,048
Amortization of acquired intangible assets		383,561		375,407		397,464
Total	$	391,074	$	382,416	$	404,475

Schedule of estimated total amortization expense for finite-lived intangibles for next five fiscal years

2019	$	333,882
2020		322,037
2021		187,250
2022		149,949
2023		106,749
Thereafter		248,392