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Employee Information - Summary of Number of Employees by Market Area (Detail) - Employee
Dec. 31, 2024
Dec. 31, 2023
Disclosure of Information About Employees [line items]    
Number of employees 94,236 99,952
North America [member]    
Disclosure of Information About Employees [line items]    
Number of employees 9,935 10,744
Europe and Latin America [member]    
Disclosure of Information About Employees [line items]    
Number of employees 43,353 45,380
South East Asia, Oceania and India [member]    
Disclosure of Information About Employees [line items]    
Number of employees 26,389 27,016
North East Asia [member]    
Disclosure of Information About Employees [line items]    
Number of employees 10,426 12,331
Middle East and Africa [member]    
Disclosure of Information About Employees [line items]    
Number of employees 4,133 4,481
Of which in EU [member]    
Disclosure of Information About Employees [line items]    
Number of employees 33,342 34,763
Of which in Sweden [member]    
Disclosure of Information About Employees [line items]    
Number of employees 13,420 13,977