Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of other deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. For example, but not limited to, acquisition-date income tax benefits or expenses recognized from changes in the acquirer's valuation allowance for its previously existing deferred tax assets resulting from a business combination and adjustments to beginning-of-year balance of a valuation allowance because of a change in circumstance causing a change in judgment about the realizability of the related deferred tax asset in future periods.

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Acquisitions (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
Acquisitions (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Feb. 28, 2017	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017
Business Acquisition
Business Acquisition, Effective Date of Acquisition		Feb. 27, 2017
Business Combination, Acquisition Related Costs			$ (20,277)	$ (29,748)	$ (66,799)	$ (101,931)
TS
Business Acquisition
Business Combination, Consideration Transferred		$ 2,800,000
Business Combination, Acquisition Related Costs			(7,153)	$ (29,748)	(35,332)	$ (101,931)
Payments to Acquire Businesses, Gross	$ 120,000	$ 2,500,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		2,785,402
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		$ 247,000
Provision for income taxes			$ (200)		(13,000)
TS \| Customer Relationships
Business Acquisition
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		14 years
Finite-lived Intangible Assets Acquired		$ 875,000
TS \| Trade Names
Business Acquisition
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		5 years
Finite-lived Intangible Assets Acquired		$ 44,000
Working Capital Adjustment Gain/Loss [Member] \| TS
Business Acquisition
Business Combination, Acquisition Related Costs					$ (9,600)