Commercial Loans Receivables and Allowance for Loan Loss Commercial Loans Receivable Characteristics (Tables)	12 Months Ended
Mar. 31, 2018	Apr. 01, 2017
Commercial Loans Receivable Characteristics (Weighted averages) [Line Items]
Weighted average contractual interest rate	4.60%	5.60%
Weighted average months to maturity	6 months	6 months

[Line Items] for Commercial Loans Receivable Characteristics (Weighted averages) [Table]

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