Geographic Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Jan. 31, 2019 |
Oct. 31, 2018 |
Jul. 31, 2018 |
Apr. 30, 2018 |
Jan. 31, 2018 |
Oct. 31, 2017 |
Jul. 31, 2017 |
Apr. 30, 2017 |
Jan. 31, 2019 |
Jan. 31, 2018 |
Jan. 31, 2017 |
|
Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||
Revenue | $ 788,628 | $ 743,189 | $ 671,720 | $ 618,643 | $ 582,480 | $ 555,389 | $ 525,320 | $ 479,861 | $ 2,822,180 | $ 2,143,050 | $ 1,574,440 |
Long-Lived Assets | 796,907 | 546,609 | 796,907 | 546,609 | |||||||
United States | |||||||||||
Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||
Revenue | 2,173,346 | 1,694,347 | 1,283,475 | ||||||||
Long-Lived Assets | 726,801 | 479,996 | 726,801 | 479,996 | |||||||
Ireland | |||||||||||
Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||
Long-Lived Assets | 55,306 | 52,904 | 55,306 | 52,904 | |||||||
Other countries | |||||||||||
Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||
Revenue | 648,834 | 448,703 | $ 290,965 | ||||||||
Long-Lived Assets | $ 14,800 | $ 13,709 | $ 14,800 | $ 13,709 |