TWO Quarterly report pursuant to Section 13 or 15(d)

Available-for-Sale Securities, Weighted Average Life Classifications (Details)

v3.10.0.1

Available-for-Sale Securities, Weighted Average Life Classifications (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less than or equal to 1 year	$ 101,583
Greater than 1 year and less than or equal to 3 years	302,802
Greater than 3 years and less than or equal to 5 years	672,709
Greater than 5 years and less than or equal to 10 years	20,632,844
Greater than 10 years	4,228,978
Available-for-sale securities, at fair value	25,938,916	$ 21,220,819
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Less than or equal to 1 year	11,626
Greater than 1 year and less than or equal to 3 years	110,610
Greater than 3 years and less than or equal to 5 years	273,557
Greater than 5 years and less than or equal to 10 years	18,130,930
Greater than 10 years	3,592,223
Available-for-sale securities, at fair value	22,118,946	18,238,725
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Less than or equal to 1 year	89,957
Greater than 1 year and less than or equal to 3 years	192,192
Greater than 3 years and less than or equal to 5 years	399,152
Greater than 5 years and less than or equal to 10 years	2,501,914
Greater than 10 years	636,755
Available-for-sale securities, at fair value	$ 3,819,970	$ 2,982,094

- Definition

Fair value of available-for-sale debt securities maturing in the second fiscal year through the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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- Definition

Fair value of available-for-sale debt securities maturing in the fourth fiscal year through the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

+ References

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- Definition

Fair value of investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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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

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