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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | The goodwill balance by business segment follows:
(Millions) |  | Safety and Industrial |  | Transportation and Electronics |  | Health Care |  | Consumer |  | Total Company
Balance as of December 31, 2019 |  | $ | 4,621 |  |  | $ | 1,830 |  |  | $ | 6,739 |  |  | $ | 254 |  |  | $ | 13,444 |
Acquisition activity |  | — |  |  | — |  |  | (34) |  |  | — |  |  | (34) |
Divestiture activity |  | — |  |  | (10) |  |  | (19) |  |  | — |  |  | (29) |
Translation and other |  | 66 |  |  | 38 |  |  | 306 |  |  | 11 |  |  | 421 |
Balance as of December 31, 2020 |  | 4,687 |  |  | 1,858 |  |  | 6,992 |  |  | 265 |  |  | 13,802 |
Translation and other |  | (65) |  |  | (33) |  |  | (206) |  |  | (12) |  |  | (316) |
Balance as of December 31, 2021 |  | $ | 4,622 |  |  | $ | 1,825 |  |  | $ | 6,786 |  |  | $ | 253 |  |  | $ | 13,486 |
Schedule of acquired intangible assets | The carrying amount and accumulated amortization of acquired finite-lived intangible assets, in addition to the balance of non-amortizable intangible assets, as of December 31, follow:
(Millions) |  | 2021 |  | 2020
Customer related intangible assets |  | $ | 4,216 |  |  | $ | 4,280 |
Patents |  | 513 |  |  | 537 |
Other technology-based intangible assets |  | 2,111 |  |  | 2,114 |
Definite-lived tradenames |  | 1,171 |  |  | 1,178 |
Other amortizable intangible assets |  | 105 |  |  | 104 |
Total gross carrying amount |  | 8,116 |  |  | 8,213 |
Accumulated amortization — customer related |  | (1,616) |  |  | (1,422) |
Accumulated amortization — patents |  | (500) |  |  | (512) |
Accumulated amortization — other technology-based |  | (839) |  |  | (638) |
Accumulated amortization — definite-lived tradenames |  | (447) |  |  | (385) |
Accumulated amortization — other |  | (79) |  |  | (79) |
Total accumulated amortization |  | (3,481) |  |  | (3,036) |
Total finite-lived intangible assets — net |  | 4,635 |  |  | 5,177 |
Non-amortizable intangible assets (primarily tradenames) |  | 653 |  |  | 658 |
Total intangible assets — net |  | $ | 5,288 |  |  | $ | 5,835 |
Schedule of amortization expense for acquired intangible assets | Amortization expense for the years ended December 31 follows:
(Millions) |  | 2021 |  | 2020 |  | 2019
Amortization expense |  | $ | 529 |  |  | $ | 537 |  |  | $ | 341 |
Schedule of expected amortization expense for acquired amortizable intangible assets | Expected amortization expense for acquired amortizable intangible assets recorded as of December 31, 2021 follows:
(Millions) |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | After 2026
Amortization expense |  | $ | 514 |  |  | $ | 485 |  |  | $ | 457 |  |  | $ | 427 |  |  | $ | 420 |  |  | $ | 2,332 |

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