Carrying value of available for sale securities pledged.

No definition available.

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- Definition

Total amount of accumulated unrealized gain on investments in debt and equity securities before taxes.

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No definition available.

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Carrying value of investment securities pledged to secure borrowings from certain various FHLBs, repurchase agreements, governmental deposits, interest rate swap agreements and available lines of credit.

+ References

No definition available.

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- Definition

The number of individual investment securities in gross unrealized loss positions. Unrealized losses occur when the amortized cost of an investment security is greater than its estimated fair value.

+ References

No definition available.

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- Definition

Number of single investment securities that exceeded ten percent of shareholders' equity.

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No definition available.

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

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No definition available.

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- Definition

Amount of realized gain (loss) on investment in debt and equity securities.

+ References

No definition available.

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- Definition

Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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The carrying amount (fair value) as of the balance sheet date of securities held that had been pledged by counterparties under financing and lending arrangements, pursuant to which the entity has the right by agreement or custom to sell or re-pledge such securities.

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Investment Securities - Additional Information (Detail)	12 Months Ended
Investment Securities - Additional Information (Detail)	Dec. 31, 2020 USD ($) Investment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 01, 2020 USD ($)
Investment Holdings [Line Items]
Retained earnings	$ 13,444,428,000	$ 12,820,916,000
Gross realized gains(loss) on sale of investment securities	$ 0	0	$ 0
Number of investment securities with aggregate gross unrealized losses \| Investment	264
Unrealized losses on individual investment securities	$ 27,000,000
Cost method investment securities	381,000,000
Investment securities pledged to secure debt carrying value	4,200,000,000
Pledged securities that can be sold or repledged	105,136,000	$ 200,339,000
Available-for-Sale Securities [Member]
Investment Holdings [Line Items]
Allowance for credit losses	0			$ 0
Investment securities pledged to secure debt carrying value	$ 2,900,000,000
Government Agency [Member]
Investment Holdings [Line Items]
Number of investment securities that exceeded ten percent of shareholders' equity \| Investment	0
Non-U.S. Government [Member]
Investment Holdings [Line Items]
Number of investment securities that exceeded ten percent of shareholders' equity \| Investment	0
Government Issued or Guaranteed [Member]
Investment Holdings [Line Items]
Number of investment securities that exceeded ten percent of shareholders' equity \| Investment	0
Adjustments for New Accounting Pronouncement [Member] \| Revision of Prior Period, Accounting Standards Update, Adjustment
Investment Holdings [Line Items]
Retained earnings	$ 17,000,000