Share Capital and Capital reserve - Narrative (Details) |
1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jul. 10, 2025
USD ($)
$ / shares
|
Nov. 06, 2023
USD ($)
|
Jul. 31, 2025
EUR (€)
shares
|
Jul. 31, 2025
USD ($)
shares
|
Jun. 30, 2025
EUR (€)
|
Jun. 30, 2025
USD ($)
$ / shares
|
Mar. 31, 2025
EUR (€)
shares
|
Mar. 31, 2025
USD ($)
$ / shares
shares
|
Jun. 30, 2024
EUR (€)
|
Jun. 30, 2024
USD ($)
$ / shares
|
Mar. 31, 2024
EUR (€)
|
Mar. 31, 2024
USD ($)
$ / shares
|
Jun. 30, 2025
EUR (€)
shares
|
Jun. 30, 2025
USD ($)
shares
|
Jun. 30, 2024
EUR (€)
|
Jun. 30, 2024
USD ($)
|
Jun. 30, 2023
USD ($)
|
Dec. 31, 2024
EUR (€)
shares
|
Dec. 31, 2024
USD ($)
shares
|
Jun. 30, 2025
$ / shares
|
Dec. 31, 2024
$ / shares
|
Jul. 10, 2024
$ / shares
|
Jul. 06, 2023
$ / shares
|
|
| Disclosure of classes of share capital [line items] | |||||||||||||||||||||||
| Other reserves | € (32,600,000) | € (32,600,000) | € (14,900,000) | ||||||||||||||||||||
| Purchase of treasury shares | $ | $ 500 | ||||||||||||||||||||||
| Payments to acquire or redeem entity's shares | 100,500,000 | € 19,200,000 | |||||||||||||||||||||
| Dividends paid, ordinary shares per share | $ / shares | $ 0.17 | $ 0.17 | $ 0.15 | $ 0.15 | |||||||||||||||||||
| Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share | $ / shares | $ 0.17 | ||||||||||||||||||||||
| Dividends paid, ordinary shares | 23,100,000 | $ 25,900,000 | € 25,300,000 | $ 26,200,000 | € 22,800,000 | $ 24,400,000 | € 22,300,000 | $ 24,400,000 | 48,400,000 | $ 52,100,000 | € 45,100,000 | $ 48,800,000 | |||||||||||
| Cash flow hedges | |||||||||||||||||||||||
| Disclosure of classes of share capital [line items] | |||||||||||||||||||||||
| Other reserves | (37,100,000) | (37,100,000) | (19,900,000) | ||||||||||||||||||||
| Cost of hedging reserve | |||||||||||||||||||||||
| Disclosure of classes of share capital [line items] | |||||||||||||||||||||||
| Reserve of change in value of forward elements of forward contracts | € 4,500,000 | 4,500,000 | 5,000,000.0 | ||||||||||||||||||||
| Key Management Personnel Of Entity Or Parent, Non-Executive Director [Member] | Restricted shares | |||||||||||||||||||||||
| Disclosure of classes of share capital [line items] | |||||||||||||||||||||||
| Shares issued, price per share (in dollars per share) | $ / shares | $ 17.11 | $ 16.33 | $ 17.1 | ||||||||||||||||||||
| Other equity instruments granted in share-based payment arrangement, per director | $ | $ 36,738 | 140,000 | $ 100,000 | $ 140,000 | |||||||||||||||||||
| Ordinary shares | |||||||||||||||||||||||
| Disclosure of classes of share capital [line items] | |||||||||||||||||||||||
| Shares issued, price per share (in dollars per share) | $ / shares | $ 17.59 | $ 17.5 | |||||||||||||||||||||
| Transaction costs | € 0.1 | ||||||||||||||||||||||
| Number of shares repurchased | shares | 1,790,293 | 1,790,293 | 6,246,368 | 6,246,368 | 7,415,614 | 7,415,614 | |||||||||||||||||
| Payments to acquire or redeem entity's shares | € 26,500,000 | $ 31,200,000 | € 100,900,000 | $ 109,900,000 | € 119.6 | $ 129.9 | |||||||||||||||||
| number of shares repurchased, not yet settled | shares | 97,185 | 97,185 | |||||||||||||||||||||