Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 25, 2019	Feb. 28, 2017	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Goodwill And Intangible Assets
Goodwill Impairment			$ 47,400	$ 0	$ 47,434	$ 0
Capitalized intangible assets				262,900	21,600	1,000,000
Capitalized Computer Software, Amortization				30,500	33,400	32,000
Other amortization expense				86,900	91,200	89,100
Asia Pacific
Goodwill And Intangible Assets
Goodwill Impairment					$ 47,400
DLT
Goodwill And Intangible Assets
Finite-lived Intangible Assets Acquired				226,400
DLT | Customer and Vendor Relationship
Goodwill And Intangible Assets
Finite-lived Intangible Assets Acquired	$ 208,000			208,000
DLT | Trade Names [Member]
Goodwill And Intangible Assets
Finite-lived Intangible Assets Acquired	$ 18,400			$ 18,400
TS
Goodwill And Intangible Assets
Finite-lived Intangible Assets Acquired						1,000,000
TS | Customer Relationships [Member]
Goodwill And Intangible Assets
Finite-lived Intangible Assets Acquired		$ 875,000				875,000
TS | Computer Software, Intangible Asset [Member]
Goodwill And Intangible Assets
Finite-lived Intangible Assets Acquired						75,000
TS | Trade Names [Member]
Goodwill And Intangible Assets
Finite-lived Intangible Assets Acquired		$ 44,000				$ 44,000