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v3.19.3.a.u2

Restructuring and other (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and other | $ 28 | $ 253 | $ 46
Employee severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and other | 9 | 37 | 10
Acquisition-related costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and other | 0 | 8 | 21
Acquisition-related costs | NYX |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and other |  | 8 | 15
Contingent acquisition consideration |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and other | 2 | 29 | 0
Legal and related |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and other | 0 | 152 | 0
Restructuring, integration and other |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and other | $ 17 | $ 27 | $ 15

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