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Goodwill | 3 Months Ended
--- | ---
Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill
| Three Months Ended | Year Ended
| March 31, 2022 | December 31, 2021
| (in thousands)
Opening balance | $ | 9,037,931 |  | $ | 936,257 |
Current period acquisitions (Note 7) | — |  | 8,120,006 |
Prior period acquisitions | 1,462 |  | — |
Foreign exchange movement | (11,410) |  | (18,332) |
Closing balance | $ | 9,027,983 |  | $ | 9,037,931 |
There are no accumulated impairment charges as of March 31, 2022 and December 31, 2021.

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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