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Restructuring | 9 Months Ended
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Sep. 30, 2024
Restructuring and Related Activities [Abstract] |
Restructuring | Restructuring In the nine months ended September 30, 2024, a restructuring charge of $45.8 million (September 30, 2023: $45.4 million) was recorded in the Condensed Consolidated Statement of Operations under a restructuring plan adopted following a review of operations. The restructuring plan reflected a workforce reduction of $31.7 million (September 30, 2023: $34.1 million) and an office consolidation program to optimize the Company's office footprint of $14.1 million (September 30, 2023: $11.3 million), being the impairment of operating right-off-use assets and related property plant and equipment of $12.6 million (September 30, 2023: $8.6 million) and onerous contract costs of $1.5 million (September 30, 2023: $2.7 million).
| 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 |  |  |  |
At September 30, 2024, a total liability of $15.0 million (December 31, 2023: $7.0 million) was recorded on the Consolidated Balance Sheet relating to restructuring activities.
| 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. The closing provision of $15.0 million (December 31, 2023: $7.0 million) reflects: (1) $10.8 million (December 31, 2023: $4.0 million) of personnel related liabilities as a result of the workforce reduction; all of which have been classified as short-term within Other Liabilities, and (2) $4.2 million (December 31, 2023: $3.0 million) of facilities related liabilities of which $1.1 million (December 31, 2023: $1.0 million) is included within Other Liabilities and $3.1 million (December 31, 2023: $2.0 million) is included within Non-Current Other Liabilities.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/420/tableOfContent Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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