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Segment Information - Additional balance sheet disclosure (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Disclosure of operating segments [line items] |  |
Goodwill | $ 8,905 | $ 8,899
Intangible assets other than goodwill | 10,231 | 10,679
Operating segments [member] | Surgical [member] |  |
Disclosure of operating segments [line items] |  |
Goodwill | 4,544 | 4,538
Intangible assets other than goodwill | 5,770 | 6,053
Operating segments [member] | Vision Care [member] |  |
Disclosure of operating segments [line items] |  |
Goodwill | 4,361 | 4,361
Intangible assets other than goodwill | 1,481 | 1,646
Unallocated amounts [member] |  |
Disclosure of operating segments [line items] |  |
Goodwill | 0 | 0
Intangible assets other than goodwill | $ 2,980 | $ 2,980

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