Financial Assets and Financial Liabilities - Summary of Fair Values of Financial Instruments in Fair Value Level 3 (Details) - Level 3 € in Millions	12 Months Ended
Dec. 31, 2025 EUR (€)
Cash flow projections \| Royalty Assets
Disclosure of financial liabilities [line items]
Significant unobservable input, assets	0.10
Increase in fair value measurement due to change in multiple unobservable inputs to reflect reasonably possible alternative assumptions, assets	€ 5.5
Decrease in fair value measurement due to change in multiple unobservable inputs to reflect reasonably possible alternative assumptions, assets	€ (5.5)
Discount rate \| Royalty Assets
Disclosure of financial liabilities [line items]
Significant unobservable input, assets	0.01
Increase in fair value measurement due to change in multiple unobservable inputs to reflect reasonably possible alternative assumptions, assets	€ 4.7
Decrease in fair value measurement due to change in multiple unobservable inputs to reflect reasonably possible alternative assumptions, assets	€ (4.2)
Contingent consideration \| Cash flow projections
Disclosure of financial liabilities [line items]
Significant unobservable input, liabilities	0.10
Change in fair value with increasing input factor (in millions €)	€ 8.2
Change in fair value with decreasing input factor (in millions €)	€ (8.2)
Contingent consideration \| Discount rate
Disclosure of financial liabilities [line items]
Significant unobservable input, liabilities	0.01
Change in fair value with increasing input factor (in millions €)	€ 3.9
Change in fair value with decreasing input factor (in millions €)	€ (3.5)

The amount of decrease in the fair value measurement of assets due to a change in multiple unobservable inputs to reflect reasonably possible alternative assumptions.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2025-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
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-URIDate 2025-03-27

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The amount of decrease in the fair value measurement of liabilities due to a change in multiple unobservable inputs to reflect reasonably possible alternative assumptions.

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The value of significant unobservable input used in the measurement of the fair value of assets.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2025-01-01
-Paragraph 93
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_d&doctype=Standard
-URIDate 2025-03-27

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