Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets (Finite-Lived)

Intangible assets are classified as follows:

	December 31, 2020				December 31, 2019
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets:
Developed software and core technologies	$	859,620	$	(370,338)	$	635,063	$	(332,622)
Customer lists and contract backlog	288,085		(136,093)		269,629		(132,596)
Trade names	175,626		(122,392)		154,259		(117,379)
Total	$	1,323,331	$	(628,823)	$	1,058,951	$	(582,597)
Indefinite-lived intangible asset:
Trade name	$	357			$	357

Intangible Assets (Indefinite-Lived)

Intangible assets are classified as follows:

	December 31, 2020				December 31, 2019
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets:
Developed software and core technologies	$	859,620	$	(370,338)	$	635,063	$	(332,622)
Customer lists and contract backlog	288,085		(136,093)		269,629		(132,596)
Trade names	175,626		(122,392)		154,259		(117,379)
Total	$	1,323,331	$	(628,823)	$	1,058,951	$	(582,597)
Indefinite-lived intangible asset:
Trade name	$	357			$	357

Estimated Future Amortization Expense for Intangible Assets

As of December 31, 2020, estimated future amortization expense for the intangible assets reflected above is as follows:

(in thousands)
2021	$	74,981
2022	77,300
2023	78,426
2024	77,399
2025	74,805
Thereafter	311,597
Total intangible assets subject to amortization, net	694,508
Indefinite-lived trade name	357
Other intangible assets, net	$	694,865

Changes in Goodwill

The changes in goodwill during the years ended December 31, 2020 and 2019 were as follows:

(in thousands)	2020		2019
Beginning balance - January 1	$	2,413,280	$	1,572,455
Acquisitions and adjustments(1)	596,054		842,588
Currency translation	28,972		(1,763)
Ending balance - December 31	$	3,038,306	$	2,413,280

(1) In accordance with the accounting for business combinations, we recorded adjustments to goodwill for the effect of changes in the provisional fair values of the assets acquired and liabilities assumed during the measurement period (up to one year from the acquisition date) as we obtained new information about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date. Such adjustments are not material to our consolidated financial statements.