BUSINESS COMBINATIONS BUSINESS COMBINATIONS - TWELVE MONTHS ENDED JANUARY 31, 2020 - INTANGIBLE ASSETS USEFUL LIVES (Details) - Individually Insignificant Business Combinations Year Ended January 31 2020	12 Months Ended
	Jan. 31, 2020
Business Acquisition
Weighted-average estimated useful life of all finite-lived identifiable intangible assets (in years)	6 years 1 month 6 days
Noncompete Agreements
Business Acquisition
Finite-Lived Intangible Asset, Useful Life	3 years
Minimum | Customer Relationships
Business Acquisition
Finite-Lived Intangible Asset, Useful Life	5 years
Minimum | Acquired Technology
Business Acquisition
Finite-Lived Intangible Asset, Useful Life	4 years
Minimum | Trademarks and Trade Names
Business Acquisition
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum | Customer Relationships
Business Acquisition
Finite-Lived Intangible Asset, Useful Life	9 years
Maximum | Acquired Technology
Business Acquisition
Finite-Lived Intangible Asset, Useful Life	5 years
Maximum | Trademarks and Trade Names
Business Acquisition
Finite-Lived Intangible Asset, Useful Life	5 years