Litigation And Other Related Contingencies (Details)	May 06, 2019	Apr. 30, 2021 USD ($)	Apr. 30, 2020 USD ($)	Sep. 30, 2016 loan	Sep. 28, 2012 loan	May 31, 2012 loan
Commitments and Contingencies Disclosure [Abstract]
Accrued obligations under indemnifications | $		$ 5,500,000	$ 1,600,000
Loss Contingencies [Line Items]
Original loans collateralized | loan						7,500
Number of loans sold to the trust | loan					96
Loans sold to trust, with claims of breach of contract and indemnity | loan				649
U.S. clients
Loss Contingencies [Line Items]
Additional tax assessment limit per client | $		6,000
SCC
Loss Contingencies [Line Items]
Principal assets of SCC | $		$ 270,000,000
Free File Litigation
Loss Contingencies [Line Items]
Eligibility period prior to filing complaint	4 years