BUSINESS COMBINATIONS BUSINESS COMBINATIONS - YEAR ENDED JANUARY 31, 2015 - KANA SOFTWARE, INC. (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Feb. 03, 2014	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Business Acquisition
Payments to Acquire Businesses, Net of Cash Acquired				$ 21,215	$ 602,943
Enterprise Intelligence | KANA Software Inc.
Business Acquisition
Payments to Acquire Businesses, Net of Cash Acquired	$ 516,600
Business Acquisition, Cost of Acquired Entity, Transaction Costs During Period		$ 300	$ 2,300	$ 2,900	$ 4,700
February 2014 Term Loans | Credit Agreement (as amended) - 2014 Amendments
Business Acquisition
Proceeds from Issuance of Debt	300,000
Revolving Line of Credit | Credit Agreement (as amended) - 2014 Amendments
Business Acquisition
Proceeds from Lines of Credit	$ 125,000