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SEGMENTS - Method of Overhead Allocation (Detail 2) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2017 | Oct. 31, 2016 | Jul. 31, 2016 | Apr. 30, 2016 | Jan. 31, 2016 | Oct. 31, 2015 | Jul. 31, 2015 | Apr. 30, 2015 | Jan. 31, 2017 | Jan. 31, 2016 | Jan. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 603,289 | $ 883,476 | $ 442,267 | $ 457,403 | $ 527,428 | $ 909,865 | $ 473,884 | $ 432,965 | $ 2,386,435 | $ 2,344,142 | $ 2,116,855
Long-Lived Assets | 969,006 |  |  |  | 281,630 |  |  |  | 969,006 | 281,630 | 247,852
United States |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,180,409 | 2,157,889 | 1,956,589
Long-Lived Assets | 790,341 |  |  |  | 150,949 |  |  |  | 790,341 | 150,949 | 132,822
Non-United States |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 206,026 | 186,253 | 160,266
Long-Lived Assets | $ 178,665 |  |  |  | $ 130,681 |  |  |  | $ 178,665 | $ 130,681 | $ 115,030

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