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Restructuring | 6 Months Ended
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Jun. 30, 2025
Restructuring and Related Activities [Abstract] |
Restructuring | Restructuring In the six months ended June 30, 2025, a restructuring charge of $82.3 million (June 30, 2024: $45.8 million) was recorded in the Condensed Consolidated Statement of Operations. The restructuring plan reflected a workforce reduction of $75.6 million (June 30, 2024: $31.7 million) and an office consolidation program to optimize the Company's office footprint of $6.7 million (June 30, 2024: $14.1 million), being the impairment of operating right-off-use assets and related property plant and equipment of $5.6 million (June 30, 2024: $12.6 million) and onerous contract costs of $1.1 million (June 30, 2024: $1.5 million).
| Three Months Ended |  | Six Months Ended
| June 30, 2025 | June 30, 2024 |  | June 30, 2025 | June 30, 2024
| (in thousands)
Restructuring charges | $ | 42,950 |  | $ | 45,789 |  |  | $ | 82,296 |  | $ | 45,789 |
Total | $ | 42,950 |  | $ | 45,789 |  |  | $ | 82,296 |  | $ | 45,789 |
At June 30, 2025, a total liability of $44.5 million (December 31, 2024: $31.5 million) was recorded on the Condensed Consolidated Balance Sheet relating to restructuring activities.
| Six Months Ended | Year Ended
| June 30, 2025 | December 31, 2024
| (in thousands)
Opening provision | $ | 31,474 |  | $ | 6,999 |
Charge during the period* | 76,723 |  | 76,392 |
Utilization | (63,731) |  | (51,917) |
Closing provision | $ | 44,466 |  | $ | 31,474 |
*The charge for the six months ended June 30, 2025 reflects the workforce reduction of $75.6 million (year ended December 31, 2024: $74.5 million) and onerous contract costs of $1.1 million (year ended December 31, 2024: $1.9 million). The closing provision of $44.5 million (December 31, 2024: $31.5 million) reflects: (1) $40.1 million (December 31, 2024: $27.7 million) of personnel related liabilities as a result of the workforce reduction; all of which have been classified as current within Other Liabilities, and (2) $4.4 million (December 31, 2024: $3.8 million) of facilities related liabilities of which $1.6 million (December 31, 2024: $1.4 million) is included within Other Liabilities an d $2.8 million (December 31, 2024: $2.4 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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