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Acquisitions (Recognized Amounts of Identified Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Purchase consideration |  | $ 841 |  |
Goodwill |  | 1,936 | $ 1,694 | $ 1,577
Optical Communications [Member] |  |  |  |
Goodwill |  | 926 | 671 | 645
Display Technologies [Member] |  |  |  |
Goodwill |  | 132 | $ 136 | $ 126
Communications Market Division [Member] |  |  |  |
Property, plant and equipment |  | 32 |  |
Other intangible assets |  | 525 |  |
Other net assets |  | 16 |  |
Total identified net assets |  | 573 |  |
Purchase consideration |  | 841 |  |
Goodwill | [1],[2] | $ 268 |  |
[1] | Amounts reflect measurement period adjustments.
[2] | The goodwill recognized is deductible for U.S. income tax purposes. The goodwill was allocated to the Optical Communications segment.

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