Disaggregation of Revenues and Geographic Information - Long-Lived Assets (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Long-Lived Assets [Line Items]
Long-lived assets	$ 1,411,340	$ 1,386,546
United States
Long-Lived Assets [Line Items]
Long-lived assets	1,202,394	1,169,820
Ireland
Long-Lived Assets [Line Items]
Long-lived assets	128,529	143,887
Other countries
Long-Lived Assets [Line Items]
Long-lived assets	$ 80,417	$ 72,839

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant