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Deposits - Weighted Average Interest Rates for Each Type of Deposit (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deposits: |  |
Interest-bearing checking and money market accounts | $ 12,610,073 | $ 10,230,144
Savings accounts | 6,415,608 | 4,780,007
Certificates of deposit | 10,330,680 | 14,214,858
Non-interest-bearing accounts | 3,080,452 | 2,432,123
Total deposits | $ 32,436,813 | $ 31,657,132
Percent of Total |  |
Interest-bearing checking and money market accounts | 38.87% | 32.32%
Savings accounts | 19.78% | 15.10%
Certificates of deposit | 31.85% | 44.90%
Non-interest-bearing accounts | 9.50% | 7.68%
Total deposits | 100.00% | 100.00%
Weighted Average Interest Rate |  |
Interest-bearing checking and money market accounts, weighted average interest rate | 0.28% | 1.30%
Savings accounts, weighted average interest rate | 0.41% | 0.75%
Certificates of deposit, weighted average interest rate | 0.83% | 2.30%
Total deposits, weighted average interest rate | 0.45% | 1.57%

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