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Equity (Details 1) - CHF (SFr)
shares in Millions, SFr in Billions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of classes of share capital [line items]      
Number of shares outstanding at beginning of period 2,234.9 2,256.8 2,265.0
Treasury shares acquired to be cancelled (126.2) (30.7) (32.6)
Other share purchases (1.4) (1.5) (1.7)
Exercise of options and employee transactions shares 1.9 0.6 14.7
Equity based compensation shares 10.4 9.6 11.0
Shares delivered to divested business employees 0.0 0.1 0.4
Total movements (115.3) (21.9) (8.2)
Number of shares outstanding at end of period 2,119.6 2,234.9 2,256.8
Shares repurchased on the SIX Swiss Exchange second trading line under the share buyback authority approved SFr 10 SFr 10 SFr 10
Total Novartis shares      
Disclosure of classes of share capital [line items]      
Number of shares issued at beginning of period 2,434.4 2,467.0 2,527.3
Shares cancelled for capital reduction (30.7) (32.6) (60.3)
Total movements (30.7) (32.6) (60.3)
Number of shares issued at end of period 2,403.7 2,434.4 2,467.0
Total treasury shares      
Disclosure of classes of share capital [line items]      
Number of treasury shares at beginning of period (199.5) (210.2) (262.3)
Shares cancelled for capital reduction 30.7 32.6 60.3
Treasury shares acquired to be cancelled (126.2) (30.7) (32.6)
Other share purchases (1.4) (1.5) (1.7)
Exercise of options and employee transactions shares 1.9 0.6 14.7
Equity based compensation shares 10.4 9.6 11.0
Shares delivered to divested business employees 0.0 0.1 0.4
Total movements (84.6) 10.7 52.1
Number of treasury shares at end of period (284.1) (199.5) (210.2)
Treasury shares with restricted use 99.0 102.5 103.0