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Acquisitions and Dispositions (Stinger Ghaffarian Technologies Acquisition) (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Apr. 25, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 1,265 | $ 1,265 | $ 968
Acquisition related costs |  | 2 | 7 | $ 0
SGT |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Voting interests acquired | 100.00% |  |  |
Aggregate base consideration | $ 355 |  |  |
Adjustments to consideration transferred | 10 |  |  |
Goodwill | $ 257 |  |  |
Acquisition related costs |  | 2 | 4 |
Revenues contributed by acquiree |  | 481 | 342 |
Gross profit contributed by acquiree |  | $ 47 | $ 31 |

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