v3.26.1
Operations and summary of significant accounting policies - Additional Information (Detail)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
€ / shares
shares
Jun. 04, 2026
shares
Jun. 03, 2026
€ / shares
shares
Dec. 31, 2025
€ / shares
shares
Disclosure Of Operations And Significant Accounting Policies [Line Items]            
Common stock, shares, outstanding [1]     750,000,000     750,000,000
Common stock, shares, issued [1]     750,000,000     750,000,000
Income (Loss) from Equity Method Investments | $ $ 0.7 $ 0.7        
Nordic Luxembourg Sarl [Member]            
Disclosure Of Operations And Significant Accounting Policies [Line Items]            
Equity method investment, ownership percentage     24.90%      
Common Stock [Member]            
Disclosure Of Operations And Significant Accounting Policies [Line Items]            
Common stock, shares, outstanding       25,000 25,000  
Common Stock, Par or Stated Value Per Share | € / shares     € 0.04 [1]   € 0.04 € 0.04 [1]
Common stock, shares, issued       749,975,000 749,975,000  
[1] The nominal value, shares issued and outstanding and additional paid-in capital have been adjusted for the 2025 balance. Refer to Note 22 for more information.