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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Millions	1 Months Ended							3 Months Ended	12 Months Ended
	May 31, 2020	Jan. 31, 2020	Aug. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	May 31, 2018	Feb. 28, 2018	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Divestiture Information
Proceeds from sale of businesses									$ 576	$ 236	$ 846
Noncontrolling interest in the new company									64	63
Aggregate net after tax gain on sale								$ 303		129
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									$ 40	$ 40	$ 85
Communication Markets Division \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business					$ 400
Proceeds from sale of businesses					772
Pre-tax gain on sale				$ 15	$ 494
Personal Safety Product Offerings \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business							$ 15
Personal Safety Product Offerings \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Maximum
Divestiture Information
Pre-tax gain on sale							$ 20
Abrasives glass products business \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business						$ 10
Abrasives glass products business \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Maximum
Divestiture Information
Pre-tax gain on sale						$ 15
Gas and flame detection business \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business			$ 120
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
Interest-bearing security received in divestiture	70
Pre-tax gain on sale	387
Noncontrolling interest in the new company	$ 60
Noncontrolling interest in new company (as a percent)	17.00%
Advanced ballistic protection business \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business		$ 85
Proceeds from divested businesses		86
Maximum contingent considerations depending on outcome of pending tenders		$ 25
Safety and Industrial \| Gas and flame detection business \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Pre-tax gain on sale			$ 112