v3.25.2
Fair value measurement - Schedule of Financial Assets (Detail) - EUR (€)
€ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Financial assets € 512,211 € 588,386
Other current financial assets 71,329 77,269
Level 1    
Disclosure of financial assets [line items]    
Financial assets 14,056 15,428
Other current financial assets 14,056 15,428
Level 2    
Disclosure of financial assets [line items]    
Financial assets 441,574 513,602
Other current financial assets 6,058 7,775
Level 3    
Disclosure of financial assets [line items]    
Financial assets 56,581 59,356
Other current financial assets 51,215 54,066
Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Financial assets 64,778 67,295
Other current financial assets 58,958 61,415
Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Financial assets 42,791 13,935
Other current financial assets 10,622 12,224
Amortized cost    
Disclosure of financial assets [line items]    
Financial assets 404,642 507,156
Other current financial assets 1,749 3,630
Derivative financial instruments    
Disclosure of financial assets [line items]    
Financial assets 32,169 1,711
Derivative financial instruments | Level 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Derivative financial instruments | Level 2    
Disclosure of financial assets [line items]    
Financial assets 32,169 1,711
Derivative financial instruments | Level 3    
Disclosure of financial assets [line items]    
Financial assets 0 0
Derivative financial instruments | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Financial assets 0 0
Derivative financial instruments | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Financial assets 32,169 1,711
Derivative financial instruments | Amortized cost    
Disclosure of financial assets [line items]    
Financial assets 0 0
Cash and cash equivalents    
Disclosure of financial assets [line items]    
Financial assets 159,896 219,130
Cash and cash equivalents | Level 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Cash and cash equivalents | Level 2    
Disclosure of financial assets [line items]    
Financial assets 159,896 219,130
Cash and cash equivalents | Level 3    
Disclosure of financial assets [line items]    
Financial assets 0 0
Cash and cash equivalents | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Financial assets 0 0
Cash and cash equivalents | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Financial assets 0 0
Cash and cash equivalents | Amortized cost    
Disclosure of financial assets [line items]    
Financial assets 159,896 219,130
Trade receivables    
Disclosure of financial assets [line items]    
Financial assets 209,462 248,790
Trade receivables | Level 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Trade receivables | Level 2    
Disclosure of financial assets [line items]    
Financial assets 209,462 248,790
Trade receivables | Level 3    
Disclosure of financial assets [line items]    
Financial assets 0 0
Trade receivables | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Financial assets 0 0
Trade receivables | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Financial assets 0 0
Trade receivables | Amortized cost    
Disclosure of financial assets [line items]    
Financial assets 209,462 248,790
Other non-current financial assets    
Disclosure of financial assets [line items]    
Financial assets 39,355 41,486
Other non-current financial assets | Level 1    
Disclosure of financial assets [line items]    
Financial assets 0 0
Other non-current financial assets | Level 2    
Disclosure of financial assets [line items]    
Financial assets 33,989 36,196
Other non-current financial assets | Level 3    
Disclosure of financial assets [line items]    
Financial assets 5,366 5,290
Other non-current financial assets | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Financial assets 5,820 5,880
Other non-current financial assets | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Financial assets 0 0
Other non-current financial assets | Amortized cost    
Disclosure of financial assets [line items]    
Financial assets 33,535 35,606
Other current financial assets    
Disclosure of financial assets [line items]    
Financial assets 71,329 77,269
Other current financial assets | Level 1    
Disclosure of financial assets [line items]    
Financial assets 14,056 15,428
Other current financial assets | Level 2    
Disclosure of financial assets [line items]    
Financial assets 6,058 7,775
Other current financial assets | Level 3    
Disclosure of financial assets [line items]    
Financial assets 51,215 54,066
Other current financial assets | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Financial assets 58,958 61,415
Other current financial assets | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Financial assets 10,622 12,224
Other current financial assets | Amortized cost    
Disclosure of financial assets [line items]    
Financial assets 1,749 3,630
Private equity    
Disclosure of financial assets [line items]    
Other current financial assets 20,841 23,954
Private equity | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Private equity | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Private equity | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 20,841 23,954
Private equity | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 20,841 23,954
Private equity | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Private equity | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Hedge funds    
Disclosure of financial assets [line items]    
Other current financial assets 10,666 10,285
Hedge funds | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Hedge funds | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Hedge funds | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 10,666 10,285
Hedge funds | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 10,666 10,285
Hedge funds | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Hedge funds | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Real estate funds    
Disclosure of financial assets [line items]    
Other current financial assets 10,301 9,713
Real estate funds | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Real estate funds | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Real estate funds | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 10,301 9,713
Real estate funds | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 10,301 9,713
Real estate funds | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Real estate funds | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Private debt    
Disclosure of financial assets [line items]    
Other current financial assets 9,693 10,395
Private debt | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Private debt | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 286 281
Private debt | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 9,407 10,114
Private debt | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 9,693 10,395
Private debt | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Private debt | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Money market funds and floating income    
Disclosure of financial assets [line items]    
Other current financial assets 8,262 9,649
Money market funds and floating income | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 4,239 5,785
Money market funds and floating income | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 4,023 3,864
Money market funds and floating income | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Money market funds and floating income | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 4,023 3,864
Money market funds and floating income | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 4,239 5,785
Money market funds and floating income | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Fixed income    
Disclosure of financial assets [line items]    
Other current financial assets 6,383 6,439
Fixed income | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 6,383 6,439
Fixed income | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Fixed income | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Fixed income | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Fixed income | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 6,383 6,439
Fixed income | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Equity    
Disclosure of financial assets [line items]    
Other current financial assets 3,434 3,204
Equity | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 3,434 3,204
Equity | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Equity | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Equity | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 3,434 3,204
Equity | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Equity | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Guarantee deposits    
Disclosure of financial assets [line items]    
Other current financial assets 1,494 3,360
Guarantee deposits | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Guarantee deposits | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 1,494 3,360
Guarantee deposits | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Guarantee deposits | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Guarantee deposits | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Guarantee deposits | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets 1,494 3,360
Financial receivables    
Disclosure of financial assets [line items]    
Other current financial assets 255 270
Financial receivables | Level 1    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Financial receivables | Level 2    
Disclosure of financial assets [line items]    
Other current financial assets 255 270
Financial receivables | Level 3    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Financial receivables | Fair value through profit or loss (FVPL)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Financial receivables | Fair value through other comprehensive income (FVOCI)    
Disclosure of financial assets [line items]    
Other current financial assets 0 0
Financial receivables | Amortized cost    
Disclosure of financial assets [line items]    
Other current financial assets € 255 € 270