v3.25.4
Shareholders' Equity - Narrative (Details)
SFr / shares in Units, $ / shares in Units, $ in Thousands, SFr in Millions
 1 Months Ended 9 Months Ended
Sep. 30, 2025
shares
Sep. 30, 2023
shares
Jun. 30, 2025
USD ($)
shares
Mar. 31, 2025
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2025
USD ($)
SFr / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
SFr / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2025
CHF (SFr)
SFr / shares
shares
Mar. 31, 2025
SFr / shares
Mar. 31, 2025
USD ($)
shares
Class of Stock [Line Items]                        
Common stock outstanding           $ 28,001 $ 28,001     SFr 40.2   $ 29,432
Shares issued (in shares)           160,784,460 160,784,460     160,784,460   168,994,000
Shares, par value (in CHF per share) | SFr / shares                   SFr 0.25 SFr 0.25  
Treasury, at cost, shares (in shares)           14,026,614 14,026,614     14,026,614   20,485,000
Adjusted share capital period (in years) 5 years 5 years                    
Maximum percentage of shares held by the company and its subsidiaries           10.00% 10.00%     10.00%    
Maximum shares available for purchase (in shares)           16,100,000 16,100,000     16,100,000    
Shares acquired for cancellation (in shares)             1,100,000          
Shares acquired for equity incentive plans or potential acquisitions (in shares)             12,900,000          
Cash dividends per share declared (in dollars per share) | (per share)           $ 1.26 $ 1.58 SFr 1.16 $ 1.37      
Payment of cash dividends | $             $ 233,059   $ 207,853      
2023 Share Repurchase Program                        
Class of Stock [Line Items]                        
Period for which repurchase program will remain in effect (in years)         3 years              
Share repurchase, authorized amount (up to) | $         $ 1,000,000             $ 1,600,000
Increase in authorized amount under share repurchase program | $       $ 600,000                
Amount available for repurchase | $           $ 409,500 $ 409,500          
Cancellation of treasury shares (in shares)     8,200,000                  
Treasury shares repurchased | $     $ 712,200                  
Common Stock Capital Shares Reserved For Future Issuance Employee Equity Incentive Plans                        
Class of Stock [Line Items]                        
Shares that may be issued out of conditional capital (in shares)           25,000,000 25,000,000     25,000,000    
Common Stock Capital Shares Reserved For Future Issuance Conversion Rights Under Future Convertible Bond Issuance                        
Class of Stock [Line Items]                        
Shares that may be issued out of conditional capital (in shares)           25,000,000 25,000,000     25,000,000    
Minimum                        
Class of Stock [Line Items]                        
Number of adjusted share capital (in shares) 144,706,014 155,795,958                    
Maximum                        
Class of Stock [Line Items]                        
Number of adjusted share capital (in shares) 176,862,906 190,417,282