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Acquisitions (Tables)

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Summary of Changes in Goodwill

The following table summarizes changes in goodwill for the years 2019 and 2020 (in thousands):

Balance at January 1, 2019		$	2,044,837
Increase from contribution of redeemable noncontrolling interests			3,300
Increase from 2019 acquisitions			36,967
Goodwill at December 31, 2019			2,085,104
Increase from contribution of redeemable noncontrolling interests			20,200
Adjustments related to 2019 acquisitions			(40	)
Goodwill at December 31, 2020		$	2,105,264

Transaction Related Expenses as Incurred

Transaction-related expenses represent costs primarily related to termination, restructuring, strategic review, management transition and other acquisition-related costs. Transaction-related expenses comprised the following costs for the years ended years ended December 31, 2020, 2019 and 2018 (in thousands):

		Year Ended December 31,
		2020				2019				2018
Legal, accounting and other acquisition-related costs		$	8,252			$	3,030			$	3,152
Termination, restructuring and strategic review costs			3,468				12,598				12,534
Management transition costs			—				5,529				14,033
		$	11,720			$	21,157			$	29,719

X

- Definition

Tabular disclosure of transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
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-Name Accounting Standards Codification
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