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Business Combinations - Summary of Changes in Goodwill (Detail)
$ in Thousands
9 Months Ended
Nov. 30, 2017
USD ($)
Goodwill [Roll Forward]  
Goodwill, beginning balance $ 1,040,709 [1]
Acquisitions 64,837
Impact of foreign currency fluctuations 15,411
Goodwill, ending balance $ 1,120,957
[1] Derived from audited financial statements.