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Customer Accounts - Schedule of Deposits (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
--- | --- | --- | ---
Deposit Account Balance |  |  |
Non-interest checking | $ 3,122,397 | $ 2,164,071 |
Interest checking | 3,566,322 | 3,029,576 |
Savings | 1,039,336 | 872,087 |
Money market | 4,379,970 | 3,740,698 |
Time deposits | 3,434,087 | 3,973,192 |
Customer accounts | $ 15,542,112 | $ 13,779,624 |
As a % of Total Deposits |  |  |
Non-interest checking | 20.10% | 15.70% |
Interest checking | 22.90% | 22.00% |
Savings | 6.70% | 6.30% |
Money market | 28.20% | 27.10% |
Time deposits | 22.10% | 28.80% |
Total | 100.00% | 100.00% |
Weighted Average Rate |  |  |
Interest checking | 0.20% | 0.23% |
Savings | 0.11% | 0.11% |
Money market | 0.19% | 0.30% |
Time deposits | 0.54% | 1.17% |
Total | 0.23% | 0.48% | 1.08%

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