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Financial risk management - Additional Information (Detail)
₩ in Billions, ¥ in Billions, ¥ in Billions, $ in Billions, $ in Billions
 12 Months Ended
Dec. 31, 2022
EUR (€)
eurobond
Dec. 31, 2021
EUR (€)
Dec. 31, 2020
EUR (€)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
JPY (¥)
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
KRW (₩)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2021
JPY (¥)
Dec. 31, 2021
TWD ($)
Dec. 31, 2021
KRW (₩)
Dec. 31, 2021
CNY (¥)
Derivative Instruments, Gain (Loss) [Line Items]                          
Net gain (loss) from effective cash flow hedges € 66,500,000 € (22,200,000) € 2,300,000                    
Gain (loss) from derivative financial instruments measured at fair value 3,600,000 (7,900,000) 28,200,000                    
Accumulated other comprehensive income, gain (loss) on financial instruments, net of taxes € 7,600,000 16,500,000 (22,300,000)                    
Derivative instruments release period 12 months                        
Gain (loss) on foreign currency cash flow hedge ineffectiveness € 0 0 0                    
Derivative asset, Statement of Financial Position [extensible enumeration] Other assets, Other non-current assets      Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets           
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other non-current assets      Other non-current assets  Other non-current assets  Other non-current assets  Other non-current assets  Other non-current assets           
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Other assets     Other assets Other assets Other assets Other assets Other assets          
Derivative liability, current, Statement of Financial Position [extensible enumeration] Accrued and other liabilities     Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities          
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Accrued and other liabilities     Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities          
Number of eurobonds outstanding | eurobond 4                        
Fair value assets (liabilities) transfers between levels amount € 0 0                      
Goodwill and intangible asset, impairment 0 0                      
Fair Value, Recurring                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Loans receivable, fair value disclosure 307,900,000 124,400,000                      
Fair Value, Inputs, Level 1 | Fair Value, Recurring                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Loans receivable, fair value disclosure 0 0                      
Fair Value, Inputs, Level 2 | Fair Value, Recurring                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Loans receivable, fair value disclosure 0 0                      
Fair Value, Inputs, Level 3 | Fair Value, Recurring                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Loans receivable, fair value disclosure 307,900,000 124,400,000                      
Four Outstanding Eurobonds                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Principal amount 3,000,000,000                        
Cost of Sales                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from cash flow hedge effect, before tax 5,500,000 20,800,000 (26,100,000)                    
Accumulated other comprehensive income, gain (loss) on financial instruments, net of taxes 4,700,000 17,700,000 (22,700,000)                    
Sales                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from cash flow hedge effect, before tax 3,400,000 (1,200,000) 400,000                    
Accumulated other comprehensive income, gain (loss) on financial instruments, net of taxes 2,900,000 (1,000,000) € 400,000                    
Forward Foreign Exchange Contracts                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Notional principal amounts € 158,500,000 27,500,000   $ 1.0 ¥ 43.9 $ 18.5 ₩ 99.0 ¥ 1.0 $ 0.6 ¥ 44.5 $ 2.5 ₩ 11.9 ¥ 0.6
Forward Foreign Exchange Contracts | Cash Flow Hedges                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Derivative asset, Statement of Financial Position [extensible enumeration] Other assets, Other non-current assets      Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets           
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accrued and other liabilities, Accrued and other liabilities     Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities          
Forward Foreign Exchange Contracts | Other Hedges                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Derivative asset, Statement of Financial Position [extensible enumeration] Other assets, Other non-current assets      Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets           
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accrued and other liabilities, Accrued and other liabilities     Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities          
Interest Rate Swap                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Notional principal amounts € 3,000,000,000 € 3,000,000,000                      
Interest Rate Swap | Fair Value Hedges                          
Derivative Instruments, Gain (Loss) [Line Items]                          
Derivative asset, Statement of Financial Position [extensible enumeration] Other assets, Other non-current assets      Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets  Other assets, Other non-current assets           
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other non-current assets      Other non-current assets  Other non-current assets  Other non-current assets  Other non-current assets  Other non-current assets           
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accrued and other liabilities, Accrued and other liabilities     Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities Accrued and other liabilities, Accrued and other liabilities          
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Accrued and other liabilities     Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities Accrued and other liabilities