BUSINESS COMBINATIONS BUSINESS COMBINATIONS - YEAR ENDED JANUARY 31, 2016 (Details) - USD ($)
$ in Thousands |
3 Months Ended |
12 Months Ended |
Apr. 30, 2016 |
Apr. 30, 2015 |
Jan. 31, 2016 |
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
$ 1,248,110
|
|
$ 1,207,176
|
| Individually Immaterial Business Acquisitions |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Cash Paid at Closing |
|
|
49,500
|
| Cash Paid at Closing |
|
|
33,222
|
| Business Acquisition Contingent Consideration Fair Value Disclosure |
|
|
30,500
|
| Business Combination, Consideration Transferred, Liabilities Incurred |
7,700
|
|
16,237
|
| Goodwill |
|
|
28,717
|
| Goodwill - tax deductible |
|
|
5,100
|
| Goodwill - not tax deductible |
|
|
23,600
|
| Transaction and Related Costs, Including Integration Costs |
100
|
$ 500
|
|
| Enterprise Intelligence |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
1,088,643
|
|
1,048,955
|
| Enterprise Intelligence | Individually Immaterial Business Acquisitions |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
|
|
7,700
|
| Cyber Intelligence |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
$ 121,236
|
|
120,719
|
| Cyber Intelligence | Individually Immaterial Business Acquisitions |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
|
|
$ 21,000
|