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Fair Value of Financial Assets and Liabilities - Recurring (Details) - Fair Value, Measurements, Recurring [Member] - Significant Other Observable Inputs (Level 2) [Member] - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Assets: |  |
Total | $ 3 | $ 2
Liabilities: |  |
Foreign exchange contracts - forwards | 1 | 1
Deferred compensation plan liabilities | 0 | 99
Total | 1 | 100
Foreign exchange contracts - forwards [Member] |  |
Assets: |  |
Foreign exchange contracts - forwards | $ 3 | $ 2

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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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