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Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Aug. 31, 2019 | Sep. 30, 2019 | Sep. 30, 2018
Divestiture Information |  |  |
Proceeds from sale of businesses |  | $ 236 | $ 806
Discontinued Operations, Held-for-sale |  |  |
Divestiture Information |  |  |
Disposal - Inventory |  | 25 |
Disposal - Property, plant and equipment |  | 10 |
Disposal - Intangible assets |  | 35 |
Disposal - Goodwill |  | $ 10 |
Aggregate operating income of divested businesses |  |  | $ 30
Gas and flame detection business | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |
Divestiture Information |  |  |
Annual sales of divested business | $ 120 |  |
Advanced ballistic protection business | Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |
Divestiture Information |  |  |
Annual sales of divested business | 85 |  |
Proceeds from sale of businesses | 91 |  |
Advanced ballistic protection business | Disposal Group, Held-for-sale, Not Discontinued Operations | Maximum |  |  |
Divestiture Information |  |  |
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 |  |  |
Estimated pre-tax gain on sale | $ 112 |  |

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