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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2018
Goodwill and Intangible Assets |
Goodwill |
|  | December 31, 2017 |  | Acquisition |  | Divestiture |  | Translation |  | March 31, 2018 |
(Millions) |  | Balance |  | activity |  | activity |  | and other |  | Balance |
Industrial |  | $ | 2,678 |  | $ | — |  | $ | (4) |  | $ | 38 |  | $ | 2,712 |
Safety and Graphics |  |  | 4,419 |  |  | (20) |  |  | (8) |  |  | 18 |  |  | 4,409 |
Health Care |  |  | 1,682 |  |  | — |  |  | — |  |  | 17 |  |  | 1,699 |
Electronics and Energy |  |  | 1,524 |  |  | — |  |  | — |  |  | 12 |  |  | 1,536 |
Consumer |  |  | 210 |  |  | — |  |  | — |  |  | 4 |  |  | 214 |
Total Company |  | $ | 10,513 |  | $ | (20) |  | $ | (12) |  | $ | 89 |  | $ | 10,570 |
Acquired Intangible Assets |
|  | March 31, |  | December 31, |
(Millions) |  | 2018 |  | 2017 |
Customer related intangible assets |  | $ | 2,341 |  | $ | 2,332 |
Patents |  |  | 564 |  |  | 561 |
Other technology-based intangible assets |  |  | 584 |  |  | 583 |
Definite-lived tradenames |  |  | 679 |  |  | 678 |
Other amortizable intangible assets |  |  | 208 |  |  | 207 |
Total gross carrying amount |  | $ | 4,376 |  | $ | 4,361 |
Accumulated amortization — customer related |  |  | (912) |  |  | (874) |
Accumulated amortization — patents |  |  | (496) |  |  | (489) |
Accumulated amortization — other technology based |  |  | (304) |  |  | (292) |
Accumulated amortization — definite-lived tradenames |  |  | (265) |  |  | (256) |
Accumulated amortization — other |  |  | (166) |  |  | (162) |
Total accumulated amortization |  | $ | (2,143) |  | $ | (2,073) |
Total finite-lived intangible assets — net |  | $ | 2,233 |  | $ | 2,288 |
Non-amortizable intangible assets (primarily tradenames) |  |  | 652 |  |  | 648 |
Total intangible assets — net |  | $ | 2,885 |  | $ | 2,936 |
Schedule of amortization expense for acquired intangible assets | Amortization expense for acquired intangible assets for the three-month periods ended March 31, 2018 and 2017 follows:
|  | Three months ended |  |
|  | March 31, |  |
(Millions) |  | 2018 |  | 2017 |  |
Amortization expense |  | $ | 64 |  | $ | 64 |  |
Schedule of expected amortization expense for acquired amortizable intangible assets | Expected amortization expense for acquired amortizable intangible assets recorded as of March 31, 2018:
|  | Remainder of |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | After |
(Millions) |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2023 |
Amortization expense |  | $ | 190 |  | $ | 243 |  | $ | 232 |  | $ | 222 |  | $ | 208 |  | $ | 176 |  | $ | 962 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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