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Provisions, income tax liabilities and other liabilities - Summary of Financial and Demographic Assumptions (Details)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of defined benefit plans [line items]      
Weighted average duration of defined benefit obligation 10 years    
Minimum Plan 1      
Disclosure of defined benefit plans [line items]      
Weighted average duration of defined benefit obligation 0 years    
Maximum Plan 1      
Disclosure of defined benefit plans [line items]      
Weighted average duration of defined benefit obligation 7 years    
Minimum plan 2      
Disclosure of defined benefit plans [line items]      
Weighted average duration of defined benefit obligation 7 years    
Maximum plan 2      
Disclosure of defined benefit plans [line items]      
Weighted average duration of defined benefit obligation 10 years    
France      
Disclosure of defined benefit plans [line items]      
General inflation rate 2.50% 1.95% 1.45%
Pension benefit indexation 2.50% 1.95%  
Healthcare cost inflation rate(d) 0.00% 0.00% 0.00%
Retirement age, bottom of range 62 years 62 years 62 years
Retirement age, top of range 67 years 67 years 67 years
Weighted average duration of defined benefit obligation 10 years 12 years 13 years
France | Bottom of range      
Disclosure of defined benefit plans [line items]      
Discount rate 3.55% 0.10% 0.00%
Pension benefit indexation     1.45%
France | Top of range      
Disclosure of defined benefit plans [line items]      
Discount rate 3.75% 1.10% 0.55%
Germany      
Disclosure of defined benefit plans [line items]      
General inflation rate 2.50% 1.95% 1.45%
Pension benefit indexation 2.50% 1.95% 1.45%
Healthcare cost inflation rate(d) 0.00% 0.00% 0.00%
Retirement age, top of range 63 years 62 years 62 years
Weighted average duration of defined benefit obligation 12 years 16 years 16 years
Germany | Bottom of range      
Disclosure of defined benefit plans [line items]      
Discount rate 3.55% 0.10% 0.00%
Germany | Top of range      
Disclosure of defined benefit plans [line items]      
Discount rate 3.75% 1.10% 0.55%
US      
Disclosure of defined benefit plans [line items]      
Discount rate 4.90% 2.70% 2.40%
General inflation rate 0.00% 0.00% 0.00%
Pension benefit indexation 0.00% 0.00% 0.00%
Retirement age, bottom of range 55 years 55 years 55 years
Retirement age, top of range 70 years 70 years 70 years
Weighted average duration of defined benefit obligation 11 years 15 years 16 years
US | Bottom of range      
Disclosure of defined benefit plans [line items]      
Healthcare cost inflation rate(d) 3.29% 3.50% 3.50%
US | Top of range      
Disclosure of defined benefit plans [line items]      
Healthcare cost inflation rate(d) 6.56% 4.50% 4.50%
UK      
Disclosure of defined benefit plans [line items]      
Discount rate 4.75% 1.90% 1.35%
General inflation rate 3.25% 3.30% 2.95%
Pension benefit indexation 3.00% 3.15% 2.85%
Healthcare cost inflation rate(d) 0.00% 0.00% 0.00%
Retirement age, bottom of range 60 years 60 years 60 years
Retirement age, top of range 65 years 65 years 65 years
Weighted average duration of defined benefit obligation 13 years 17 years 18 years