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Acquisitions and Divestitures - Acquisitions (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2019 USD ($) | Dec. 31, 2018 USD ($) item | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Business Acquisitions Information |  |  |  |
Accounts receivable |  |  | $ 100 |
Inventory |  |  | 79 |
Other current assets |  |  | 10 |
Property, plant and equipment |  |  | 74 |
Purchased finite-lived intangible assets |  |  | 855 | $ 4
Purchased goodwill |  |  | 1,302 |
Accounts payable and other liabilities |  |  | (100) |
Deferred tax asset/(liability) |  |  | (297) |
Net assets acquired |  |  | 2,023 |
Supplemental information: |  |  |  |
Cash paid |  |  | 2,032 |
Less: Cash acquired |  |  | 9 |
Cash paid, net of cash acquired |  | $ (13) | 2,023 | $ 16
Number of business combinations completed | item |  | 0 |  |
Customer related intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 442 |
Other technology-based intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 127 |
Definite-lived tradenames |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 285 |
Other amortizable intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | $ 1 |
Maximum |  |  |  |
Business Acquisitions Information |  |  |  |
Intangible assets useful life |  |  | 17 years | 20 years
Minimum |  |  |  |
Business Acquisitions Information |  |  |  |
Intangible assets useful life |  |  | 4 years | 2 years
Weighted average |  |  |  |
Business Acquisitions Information |  |  |  |
Intangible assets useful life |  |  | 15 years | 8 years
Weighted average | Customer related intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Intangible assets useful life |  |  | 15 years |
Weighted average | Other technology-based intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Intangible assets useful life |  |  | 10 years |
Weighted average | Definite-lived tradenames |  |  |  |
Business Acquisitions Information |  |  |  |
Intangible assets useful life |  |  | 17 years |
Weighted average | Other amortizable intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Intangible assets useful life |  |  | 5 years |
M*Modal | Subsequent Event |  |  |  |
Supplemental information: |  |  |  |
Cash paid | $ 700 |  |  |
Assumed debt | $ 300 |  |  |
Scott Safety |  |  |  |
Business Acquisitions Information |  |  |  |
Accounts receivable |  |  | $ 100 |
Inventory |  |  | 79 |
Other current assets |  |  | 10 |
Property, plant and equipment |  |  | 74 |
Purchased goodwill |  |  | 1,296 |
Accounts payable and other liabilities |  |  | (100) |
Deferred tax asset/(liability) |  |  | (297) |
Net assets acquired |  |  | 2,011 |
Supplemental information: |  |  |  |
Cash paid |  |  | 2,020 |
Less: Cash acquired |  |  | 9 |
Cash paid, net of cash acquired |  |  | 2,011 |
Adjustments to purchase price allocation |  | $ 7 |  |
Annual sales prior to acquisition |  |  |  | $ 570
Scott Safety | Customer related intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 439 |
Scott Safety | Other technology-based intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 125 |
Scott Safety | Definite-lived tradenames |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 285 |
Capital Safety |  |  |  |
Supplemental information: |  |  |  |
Adjustments to the preliminary purchase price allocations within the allocation period primarily related to contingent liabilities and certain tax-related items |  |  |  | $ 35
Other Acquisitions |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased goodwill |  |  | 6 |
Net assets acquired |  |  | 12 |
Supplemental information: |  |  |  |
Cash paid |  |  | 12 |
Cash paid, net of cash acquired |  |  | 12 |
Other Acquisitions | Customer related intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 3 |
Other Acquisitions | Other technology-based intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | 2 |
Other Acquisitions | Other amortizable intangible assets |  |  |  |
Business Acquisitions Information |  |  |  |
Purchased finite-lived intangible assets |  |  | $ 1 |

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