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Weighted Average Interest Rates for Each Type of Deposit (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amount
Interest-bearing checking and money market accounts	$ 11,530,049	$ 12,936,301
Savings accounts	4,643,260	5,210,001
Certificates of deposit	12,194,322	8,643,646
Non-interest-bearing accounts	2,396,799	2,312,215
Total deposits	$ 30,764,430	$ 29,102,163
Percent of Total
Interest-bearing checking and money market accounts	37.48%	44.45%
Savings accounts	15.09%	17.90%
Certificates of deposit	39.64%	29.70%
Non-interest-bearing accounts	7.79%	7.95%
Total deposits	100.00%	100.00%
Weighted Average Interest Rate
Interest-bearing checking and money market accounts, weighted average interest rate	1.74%	0.23%
Savings accounts, weighted average interest rate	0.68%	0.52%
Certificates of deposit, weighted average interest rate	2.15%	1.31%
Non-interest-bearing accounts, weighted average interest rate	0.00%	0.00%
Total deposits, weighted average interest rate	1.61%	0.58%

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Interest-bearing domestic deposit, checking and money market.

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Percentage of Deposits to Deposits

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Percentage of Deposits to Deposits, Non-Interest-Bearing Accounts

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Percentage of interest-bearing domestic deposits to deposits, checking and money market.

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Weighted Average Rate Deposit, Non-Interest-Bearing Accounts

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Weighted average rate domestic deposit, checking and money market.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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Amount of money in noninterest-bearing domestic accounts that entitle the depositor to withdraw funds at any time without prior notice, also known as demand deposits.

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Percentage of interest-bearing domestic certificates of deposit liabilities to total deposit liabilities.

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Amount of time deposit liabilities, including certificates of deposit.

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Weighted average interest rate calculated at point in time for domestic deposit liability.

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The weighted average interest rate for domestic certificates of deposit liabilities.

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The weighted average interest rate for domestic savings deposit liabilities.

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