Financial instruments - fair values and risk management -Summary of cash flows for financial liabilities (Detail) - EUR (€) € in Thousands | Dec. 31, 2021 | Dec. 31, 2020 |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | € 221,216 | € 404,594 |
Non-derivative financial liabilities, undiscounted cash flows | 224,318 | 413,206 |
Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 77,651 | 75,249 |
Non-derivative financial liabilities, undiscounted cash flows | 77,651 | 75,249 |
Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 57,279 | 61,620 |
Non-derivative financial liabilities, undiscounted cash flows | 57,279 | 61,620 |
Other Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 1,106 | 2,132 |
Non-derivative financial liabilities, undiscounted cash flows | 1,106 | 2,132 |
Customer Liabilities [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 51,959 | 43,709 |
Non-derivative financial liabilities, undiscounted cash flows | 51,959 | 43,709 |
Lease liabilities [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 16,249 | 9,072 |
Non-derivative financial liabilities, undiscounted cash flows | 19,236 | 11,374 |
Contingent consideration [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 13,200 | 2,089 |
Non-derivative financial liabilities, undiscounted cash flows | 13,200 | 2,089 |
Interest Bearing Loans and Borrowings Principal [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 3,327 | 200,417 |
Non-derivative financial liabilities, undiscounted cash flows | 3,327 | 200,416 |
Interest BearingLoans and Borrowings Interest [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 445 | 10,306 |
Non-derivative financial liabilities, undiscounted cash flows | 560 | 16,617 |
Not later than one year [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 210,060 | 371,203 |
Not later than one year [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 77,651 | 75,249 |
Not later than one year [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 57,279 | 61,620 |
Not later than one year [member] | Other Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 1,106 | 2,132 |
Not later than one year [member] | Customer Liabilities [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 51,959 | 43,709 |
Not later than one year [member] | Lease liabilities [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 5,746 | 2,586 |
Not later than one year [member] | Contingent consideration [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 13,200 | 2,089 |
Not later than one year [member] | Interest Bearing Loans and Borrowings Principal [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 2,563 | 174,568 |
Not later than one year [member] | Interest BearingLoans and Borrowings Interest [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 556 | 9,250 |
Later than one year and not later than two years [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 6,190 | 2,568 |
Later than one year and not later than two years [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than one year and not later than two years [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than one year and not later than two years [member] | Other Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than one year and not later than two years [member] | Customer Liabilities [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than one year and not later than two years [member] | Lease liabilities [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 5,422 | 2,568 |
Later than one year and not later than two years [member] | Contingent consideration [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than one year and not later than two years [member] | Interest Bearing Loans and Borrowings Principal [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 764 | 0 |
Later than one year and not later than two years [member] | Interest BearingLoans and Borrowings Interest [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 4 | 0 |
Later than three years and not later than five years [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 7,914 | 39,435 |
Later than three years and not later than five years [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than three years and not later than five years [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than three years and not later than five years [member] | Other Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than three years and not later than five years [member] | Customer Liabilities [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than three years and not later than five years [member] | Lease liabilities [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 7,914 | 6,220 |
Later than three years and not later than five years [member] | Contingent consideration [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than three years and not later than five years [member] | Interest Bearing Loans and Borrowings Principal [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 25,848 |
Later than three years and not later than five years [member] | Interest BearingLoans and Borrowings Interest [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 7,367 |
Later than five years [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 154 | 0 |
Later than five years [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than five years [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than five years [member] | Other Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than five years [member] | Customer Liabilities [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than five years [member] | Lease liabilities [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 154 | 0 |
Later than five years [member] | Contingent consideration [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than five years [member] | Interest Bearing Loans and Borrowings Principal [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | 0 |
Later than five years [member] | Interest BearingLoans and Borrowings Interest [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | € 0 |
Parent [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 1,575,995 | |
Non-derivative financial liabilities, undiscounted cash flows | 1,575,995 | |
Parent [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 3,187 | |
Non-derivative financial liabilities, undiscounted cash flows | 3,187 | |
Parent [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 907,063 | |
Non-derivative financial liabilities, undiscounted cash flows | 907,063 | |
Parent [member] | Loans and Borrowings [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative Financial Liabilities | 665,745 | |
Non-derivative financial liabilities, undiscounted cash flows | 665,745 | |
Parent [member] | Not later than one year [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 1,575,995 | |
Parent [member] | Not later than one year [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 3,187 | |
Parent [member] | Not later than one year [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 907,063 | |
Parent [member] | Not later than one year [member] | Loans and Borrowings [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 665,745 | |
Parent [member] | Later than one year and not later than two years [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than one year and not later than two years [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than one year and not later than two years [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than one year and not later than two years [member] | Loans and Borrowings [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than three years and not later than five years [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than three years and not later than five years [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than three years and not later than five years [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than three years and not later than five years [member] | Loans and Borrowings [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than five years [member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than five years [member] | Trade Payables [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than five years [member] | Accruals [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | 0 | |
Parent [member] | Later than five years [member] | Loans and Borrowings [Member] | | |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] | | |
Non-derivative financial liabilities, undiscounted cash flows | € 0 | |