v3.7.0.1
Accounting Standards and Significant Accounting Policies - Adjustments to the Balance Sheet (Details) - USD ($)
$ in Thousands
Apr. 30, 2017
Jan. 31, 2017
Assets    
Trade and other receivables, net $ 297,894 $ 409,780 [1]
Prepaid expenses and other current assets 68,406 66,590 [1]
Deferred costs 51,819 51,330 [1]
Deferred costs, noncurrent 114,504 117,249 [1]
Liabilities    
Unearned revenue 1,079,874 1,086,212 [1]
Unearned revenue, noncurrent $ 120,389 135,331 [1]
As previously reported    
Assets    
Trade and other receivables, net   383,908
Prepaid expenses and other current assets   88,336
Deferred costs   27,537
Deferred costs, noncurrent   43,310
Liabilities    
Unearned revenue   1,097,417
Unearned revenue, noncurrent   135,970
Adjustments | Adjustments    
Assets    
Trade and other receivables, net   25,872
Prepaid expenses and other current assets   (21,746)
Deferred costs   23,793
Deferred costs, noncurrent   73,939
Liabilities    
Unearned revenue   (11,205)
Unearned revenue, noncurrent   $ (639)
[1] See Note 2 for a summary of adjustments.