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v3.19.3.a.u2

Restructuring and other (Tables) | 12 Months Ended
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Dec. 31, 2019
Restructuring and Related Activities [Abstract] |
Summary of Restructuring and Other Costs | The following table summarizes pre-tax restructuring and other costs for the periods presented:
|  | Year Ended December 31,
|  | 2019 |  | 2018 |  | 2017
Employee severance(1) |  | $ | 9 |  |  | $ | 37 |  |  | $ | 10 |
Acquisition-related costs(2) |  | — |  |  | 8 |  |  | 21 |
Contingent acquisition consideration(3) |  | 2 |  |  | 29 |  |  | — |
Legal and related |  | — |  |  | 152 |  |  | — |
Restructuring, integration and other |  | 17 |  |  | 27 |  |  | 15 |
Total |  | $ | 28 |  |  | $ | 253 |  |  | $ | 46 |
(1) Including employee severance and termination costs associated with restructuring activities. (2) Years ended December 31, 2018 and 2017, include $8 million and $15 million related to NYX acquisition, respectively. (3) Represents contingent consideration fair value adjustment (see Note 16).

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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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