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BALANCE SHEET VALUES OF FINANCIAL ASSETS AND LIABILITIES BY MEASUREMENT CATEGORIES - Schedule of changes in Level 3 items in financial instruments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Assets |  |
Opening balance | $ 8,396.1 |
Closing balance | 10,064.4 | $ 8,396.1
Liabilities |  |
Opening balance | 3,387.7 |
Closing balance | 4,243.5 | 3,387.7
Level 3 | Contingent consideration related to acquisitions |  |
Liabilities |  |
Opening balance | 0.0 | 0.0
Additions | 20.0 | 0.0
Disposals | 0.0 | 0.0
Gains recognized in OCI |  | 0.0
Exchange rate losses | 0.0 | 0.0
Closing balance | 20.0 | 0.0
Unlisted equity securities | Level 3 |  |
Assets |  |
Opening balance | 12.6 | 9.2
Additions | 1.8 | 0.0
Disposals | 0.0 | 0.0
Gains recognized in OCI |  | 3.5
Exchange rate losses | (0.1) | 0.0
Closing balance | 14.3 | 12.6
Promissory notes | Level 3 |  |
Assets |  |
Opening balance | 11.2 | 6.8
Additions | 29.5 | 54.0
Disposals | (37.0) | (48.9)
Gains recognized in OCI |  | 0.0
Exchange rate losses | 0.7 | (0.7)
Closing balance | 4.4 | 11.2
Available for sale receivables | Level 3 |  |
Assets |  |
Opening balance | 36.2 | 2.6
Additions | 86.5 | 318.1
Disposals | (64.2) | (284.5)
Gains recognized in OCI |  | 0.0
Exchange rate losses | 0.0 | 0.0
Closing balance | $ 58.5 | $ 36.2

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