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Goodwill and Intangible Assets (Goodwill balance by business segment) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) segment | Mar. 31, 2019 USD ($) segment | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($)
Goodwill Information |  |  |  |
Number of business combinations completed |  |  |  | 0
Purchased goodwill from acquisitions | $ 517,000,000 |  | $ 517,000,000 |
Goodwill |  |  |  |
Balance at the beginning of the period |  | $ 10,051,000,000 | 10,051,000,000 |
Acquisition activity |  |  | 517,000,000 |
Translation and other |  |  | 6,000,000 |
Balance at the end of the period | $ 10,574,000,000 |  | 10,574,000,000 |
Number of business segments | segment | 4 | 5 |  |
Previous Number Of Reportable Segments | segment | 4 |  |  |
Amount of Goodwill impairment |  |  | 0 |
Safety and Industrial |  |  |  |
Goodwill |  |  |  |
Balance at the beginning of the period |  | $ 4,716,000,000 | 4,716,000,000 |
Translation and other |  |  | (9,000,000) |
Balance at the end of the period | $ 4,707,000,000 |  | 4,707,000,000 |
Transportation and Electronics |  |  |  |
Goodwill |  |  |  |
Balance at the beginning of the period |  | 1,857,000,000 | 1,857,000,000 |
Translation and other |  |  | (8,000,000) |
Balance at the end of the period | 1,849,000,000 |  | 1,849,000,000 |
Health Care |  |  |  |
Goodwill |  |  |  |
Balance at the beginning of the period |  | 3,248,000,000 | 3,248,000,000 |
Acquisition activity |  |  | 517,000,000 |
Translation and other |  |  | (11,000,000) |
Balance at the end of the period | 3,754,000,000 |  | 3,754,000,000 |
Consumer |  |  |  |
Goodwill |  |  |  |
Balance at the beginning of the period |  | $ 230,000,000 | 230,000,000 |
Translation and other |  |  | 34,000,000 |
Balance at the end of the period | $ 264,000,000 |  | $ 264,000,000 |

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