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Goodwill and Other Intangible Assets (Carrying Amount of Goodwill by Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Balance |  |  | $ 1,694 |  | $ 1,577 |
Acquired goodwill |  |  | 259 | [1] | 99 | [2]
Measurement period adjustment |  |  | 11 |  | (28) | [3]
Foreign currency translation adjustment |  |  | (28) |  | 46 |
Balance |  |  | 1,936 |  | 1,694 |
Purchase consideration |  |  | 841 |  |  |
Display Technologies [Member] |  |  |  |  |  |
Balance |  |  | 136 |  | 126 |
Foreign currency translation adjustment |  |  | (4) |  | 10 |
Balance |  |  | 132 |  | 136 |
Optical Communications [Member] |  |  |  |  |  |
Balance |  |  | 671 |  | 645 |
Acquired goodwill |  |  | 257 | [1] | 22 | [2]
Measurement period adjustment |  |  | 11 |  | (1) | [3]
Foreign currency translation adjustment |  |  | (13) |  | 5 |
Balance |  |  | 926 |  | 671 |
Specialty Materials [Member] |  |  |  |  |  |
Balance |  |  | 150 |  | 150 |
Balance |  |  | 150 |  | 150 |
Life Sciences [Member] |  |  |  |  |  |
Balance |  |  | 623 |  | 558 |
Acquired goodwill |  |  | 2 | [1] | 43 | [2]
Measurement period adjustment | [3] |  |  |  | 1 |
Foreign currency translation adjustment |  |  | (8) |  | 21 |
Balance |  |  | 617 |  | 623 |
All Other [Member] |  |  |  |  |  |
Balance |  |  | 114 |  | 98 |
Acquired goodwill | [2] |  |  |  | 34 |
Measurement period adjustment |  | $ (28) |  |  | (28) | [3]
Foreign currency translation adjustment |  |  | (3) |  | 10 |
Balance |  |  | $ 111 |  | $ 114 |
[1] | The Company completed the acquisition of CMD during the second quarter and the fourth quarter of 2018.
[2] | The Company completed two small acquisitions in the third quarter of 2017 which are reported in the Optical Communications and Life Sciences segment and one small acquisition in the first quarter of 2017 which is reported in All Other.
[3] | In the second quarter of 2017, the Company recorded measurement period adjustments of $28 million related to an acquisition completed in a previous period.

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