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Post-employment benefits for associates (Details 9)
$ in Millions
Dec. 31, 2020
USD ($)
Pension plans  
Novartis Group contributions  
Contributions, next fiscal year (estimated) $ 404
Pension plans | Not later than one year [member]  
Expected future benefit payments  
Expected future benefit payment 1,245
Pension plans | Later than one year and not later than two years [member]  
Expected future benefit payments  
Expected future benefit payment 1,198
Pension plans | Later than two years and not later than three years [member]  
Expected future benefit payments  
Expected future benefit payment 1,191
Pension plans | Later than three years and not later than four years [member]  
Expected future benefit payments  
Expected future benefit payment 1,182
Pension plans | Later than four years and not later than five years [member]  
Expected future benefit payments  
Expected future benefit payment 1,165
Pension plans | Later than five years and not later than ten years [member]  
Expected future benefit payments  
Expected future benefit payment 5,651
Other post-employment benefit plans  
Novartis Group contributions  
Contributions, next fiscal year (estimated) 40
Other post-employment benefit plans | Not later than one year [member]  
Expected future benefit payments  
Expected future benefit payment 40
Other post-employment benefit plans | Later than one year and not later than two years [member]  
Expected future benefit payments  
Expected future benefit payment 41
Other post-employment benefit plans | Later than two years and not later than three years [member]  
Expected future benefit payments  
Expected future benefit payment 41
Other post-employment benefit plans | Later than three years and not later than four years [member]  
Expected future benefit payments  
Expected future benefit payment 40
Other post-employment benefit plans | Later than four years and not later than five years [member]  
Expected future benefit payments  
Expected future benefit payment 40
Other post-employment benefit plans | Later than five years and not later than ten years [member]  
Expected future benefit payments  
Expected future benefit payment $ 181