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Restructuring (Tables) | 9 Months Ended
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Sep. 30, 2024
Restructuring and Related Activities [Abstract] |
Summary of Restructuring Charges |
| Three Months Ended | Nine Months Ended |  |  |
| September 30, 2024 | September 30, 2023 | September 30, 2024 | September 30, 2023 |  |  |
| (in thousands) |  |  |
Restructuring charges | $ | — |  | $ | — |  | $ | 45,789 |  | $ | 45,390 |  |  |  |
Total | $ | — |  | $ | — |  | $ | 45,789 |  | $ | 45,390 |  |  |  |
Summary of Details of Movement in Restructuring Charges |
| Nine Months Ended | Year Ended
| September 30, 2024 | December 31, 2023
| (in thousands)
Opening provision | $ | 6,999 |  | $ | 6,022 |
Charge during the period* | 33,230 |  | 36,704 |
Utilization | (25,246) |  | (35,727) |
Closing provision | $ | 14,983 |  | $ | 6,999 |
*The charge for the nine months ended September 30, 2024 reflects the workforce reduction of $31.7 million and onerous contract costs of $1.5 million. The charge was recognised during the three months ended June 30, 2024.

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.b.2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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