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Segment Information - Net sales by business franchise (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of products and services [line items]      
Net sales $ 7,362 $ 7,149 $ 6,785
Surgical [member]      
Disclosure of products and services [line items]      
Net sales 4,174 3,999 3,733
Surgical [member] | Implantables [Member]      
Disclosure of products and services [line items]      
Net sales 1,210 1,136 1,045
Surgical [member] | Consumables [Member]      
Disclosure of products and services [line items]      
Net sales 2,304 2,227 2,104
Surgical [member] | Equipment & other [Member]      
Disclosure of products and services [line items]      
Net sales 660 636 584
Vision Care [member]      
Disclosure of products and services [line items]      
Net sales 3,188 3,150 3,052
Vision Care [member] | Contact lenses [Member]      
Disclosure of products and services [line items]      
Net sales 1,969 1,928 1,836
Vision Care [member] | Ocular health [Member]      
Disclosure of products and services [line items]      
Net sales $ 1,219 $ 1,222 $ 1,216