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Segment Information - Combined income statements (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of operating segments [line items] |  |  |
Net sales to third parties | $ 7,362,000,000 | $ 7,149,000,000 | $ 6,785,000,000
Sales to former parent | 0 | 4,000,000 | 4,000,000
Other revenues | 146,000,000 | 0 | 3,000,000
Net sales and other revenues | 7,508,000,000 | 7,153,000,000 | 6,792,000,000
Segment contribution | 1,486,000,000 | 1,407,000,000 | 1,316,000,000
Amortization of intangible assets | (1,084,000,000) | (1,019,000,000) | (1,033,000,000)
Impairment charges on intangible assets | 0 | (378,000,000) | (57,000,000)
General & administration (corporate) | (243,000,000) | (206,000,000) | (202,000,000)
Other (expense)/income, net | (346,000,000) | (52,000,000) | (101,000,000)
Operating (loss) | (187,000,000) | (248,000,000) | (77,000,000)
Interest expense | (113,000,000) | (24,000,000) | (27,000,000)
Other financial income & expense | (32,000,000) | (28,000,000) | (23,000,000)
(Loss) before taxes | (332,000,000) | (300,000,000) | (127,000,000)
Depreciation of property, plant & equipment | (267,000,000) | (239,000,000) | (215,000,000)
Depreciation of right-of-use assets | (66,000,000) | 0 |
Impairment charges on property, plant & equipment, net | (8,000,000) | (2,000,000) | 0
Equity-based compensation | (114,000,000) | (93,000,000) | (71,000,000)
Unallocated amounts [member] |  |  |
Disclosure of operating segments [line items] |  |  |
Depreciation of property, plant & equipment | 0 | 0 | 0
Depreciation of right-of-use assets | 0 | 0 |
Impairment charges on property, plant & equipment, net | 0 | 0 | 0
Equity-based compensation | (15,000,000) | (12,000,000) | (10,000,000)
Surgical [member] |  |  |
Disclosure of operating segments [line items] |  |  |
Net sales to third parties | 4,174,000,000 | 3,999,000,000 | 3,733,000,000
Sales to former parent | 0 | 2,000,000 | 3,000,000
Other revenues | 0 | 0 | 0
Net sales and other revenues | 4,174,000,000 | 4,001,000,000 | 3,736,000,000
Segment contribution | 923,000,000 | 813,000,000 | 691,000,000
Impairment charges on intangible assets | 0 | (378,000,000) |
Surgical [member] | Operating segments [member] |  |  |
Disclosure of operating segments [line items] |  |  |
Depreciation of property, plant & equipment | (112,000,000) | (114,000,000) | (106,000,000)
Depreciation of right-of-use assets | (42,000,000) | 0 |
Impairment charges on property, plant & equipment, net | (3,000,000) | (1,000,000) | 0
Equity-based compensation | (55,000,000) | (45,000,000) | (34,000,000)
Vision Care [member] |  |  |
Disclosure of operating segments [line items] |  |  |
Net sales to third parties | 3,188,000,000 | 3,150,000,000 | 3,052,000,000
Sales to former parent | 0 | 2,000,000 | 1,000,000
Other revenues | 146,000,000 | 0 | 3,000,000
Net sales and other revenues | 3,334,000,000 | 3,152,000,000 | 3,056,000,000
Segment contribution | 563,000,000 | 594,000,000 | 625,000,000
Impairment charges on intangible assets | 0 | 0 |
Vision Care [member] | Operating segments [member] |  |  |
Disclosure of operating segments [line items] |  |  |
Depreciation of property, plant & equipment | (155,000,000) | (125,000,000) | (109,000,000)
Depreciation of right-of-use assets | (24,000,000) | 0 |
Impairment charges on property, plant & equipment, net | (5,000,000) | (1,000,000) | 0
Equity-based compensation | $ (44,000,000) | $ (36,000,000) | $ (27,000,000)

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