Goodwill and Intangible Assets, Net - Schedule of Goodwill by Reportable Segment (Detail) $ in Thousands |
9 Months Ended |
---|---|
Sep. 30, 2019
USD ($)
| |
Goodwill [Line Items] | |
Goodwill, Beginning balance | $ 1,545,761 |
Foreign exchange translation adjustment | (1,683) |
Goodwill, Ending balance | 1,544,078 |
Index [Member] | |
Goodwill [Line Items] | |
Goodwill, Beginning balance | 1,203,404 |
Foreign exchange translation adjustment | (1,041) |
Goodwill, Ending balance | 1,202,363 |
Analytics [Member] | |
Goodwill [Line Items] | |
Goodwill, Beginning balance | 290,976 |
Goodwill, Ending balance | 290,976 |
All Other [Member] | |
Goodwill [Line Items] | |
Goodwill, Beginning balance | 51,381 |
Foreign exchange translation adjustment | (642) |
Goodwill, Ending balance | $ 50,739 |