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Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Millions	1 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2020	Jan. 31, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Divestiture Information
Proceeds from sale of businesses			$ 573	$ 6
Noncontrolling interest in the new company			58		$ 63
Disposal Group, Held-for-sale, Not Discontinued Operations
Divestiture Information
Disposal - Inventory					70
Disposal - Property, plant and equipment					150
Disposal - Intangible assets					35
Disposal - Goodwill					30
Aggregate operating income of divested businesses			$ 38
Drug delivery business \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business					380
Aggregate selling price relative to the divestiture transaction	$ 617
Proceeds from sale of businesses	487
Pre-tax gain on sale	387
Noncontrolling interest in the new company	$ 60
Noncontrolling interest in new company (as a percent)	17.00%
Disposal - Notes and Loans	$ 70
Advanced ballistic protection business \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business					$ 85
Proceeds from sale of businesses		$ 86
Maximum contingent considerations depending on outcome of pending tenders		$ 25