Number Of Available for Sale Securities

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Number of Securities, Continuous Unrealized Loss Position More Than Twelve Months

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No definition available.

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost 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 fiscal year 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.

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

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

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of restricted investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of increase (decrease) of investment in debt and equity securities, measured at fair value with changes in fair value recognized in net income.

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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.

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No definition available.

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For investments which are quantified by principal amount, the principle balance held at close of period.

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- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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

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The cash outflow to acquire securities classified as trading securities and held for investment purposes. Excludes payments for trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time).

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

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The cash inflow associated with the sale of securities classified as trading securities and held for investment purposes. Excludes proceeds from trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time).

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No definition available.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Real Estate Securities - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) investment	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) investment	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) investment
Investment Holdings [Line Items]
Trading securities pledged as collateral	$ 874,000,000		$ 874,000,000
Trading securities	1,205,389,000		1,205,389,000		$ 1,118,612,000
Trading securities acquired	115,000,000	$ 233,000,000	269,000,000	$ 378,000,000
Trading securities sold	132,000,000	62,000,000	161,000,000	244,000,000
Increase (decrease) in valuation of trading securities	18,000,000	(1,000,000)	40,000,000	(4,000,000)
Available-for-sale securities purchased	4,000,000	2,000,000	9,000,000	6,000,000
Available-for-sale securities sold	25,000,000	41,000,000	67,000,000	92,000,000
Net realized gains on AFS securities	$ 3,000,000	5,000,000	$ 9,000,000	14,000,000
Number of AFS securities (in investments) \| investment	114		114		128
Number of securities in unrealized loss position \| investment	1		1		7
Number of securities in a continuous unrealized loss position for twelve consecutive months or longer (in investments) \| investment	1		1		3
Other than temporary impairment		$ 200,000		$ 200,000
Reclassification out of Accumulated Other Comprehensive Income \| Net Unrealized Gains on Available-for-Sale Securities
Investment Holdings [Line Items]
Other than temporary impairment	$ 0		$ 0
Residential
Investment Holdings [Line Items]
Securities pledged as collateral	945,000,000		945,000,000		$ 844,000,000
Gross unrealized losses (less than)	(12,000)		(12,000)		(548,000)
Subordinate Securities \| Residential
Investment Holdings [Line Items]
Gross unrealized losses (less than)	0		0		(499,000)
Sequoia securities \| Subordinate Securities
Investment Holdings [Line Items]
Trading securities	73,000,000		73,000,000		68,000,000
Sequoia securities \| Sequoia Choice
Investment Holdings [Line Items]
Trading securities pledged as collateral	148,000,000		148,000,000		130,000,000
Sequoia securities \| Freddie Mac SLST
Investment Holdings [Line Items]
Trading securities pledged as collateral	203,000,000		203,000,000		229,000,000
Sequoia securities \| Freddie Mac K-Series
Investment Holdings [Line Items]
Trading securities pledged as collateral	207,000,000		207,000,000		18,000,000
Interest-only Senior Trading Securities
Investment Holdings [Line Items]
Debt securities, trading	66,000,000		66,000,000		82,000,000
Unpaid principal balance	102,000,000		102,000,000		78,000,000
Interest-only Senior Trading Securities \| Certificated Servicing Strips
Investment Holdings [Line Items]
Debt securities, trading	35,000,000		35,000,000		43,000,000
Trading securities \| Residential Subordinate Securities
Investment Holdings [Line Items]
Unpaid principal balance	1,190,000,000		1,190,000,000		1,120,000,000
CRT securities \| Mezzanine Securities
Investment Holdings [Line Items]
Trading securities	1,030,000,000.00		1,030,000,000.00		960,000,000
CRT securities \| Subordinate Securities
Investment Holdings [Line Items]
Trading securities	201,000,000		201,000,000		277,000,000
Other third party securities \| Subordinate Securities
Investment Holdings [Line Items]
Trading securities	233,000,000		233,000,000		186,000,000
Third-party multifamily mortgage-backed securities \| Subordinate Securities
Investment Holdings [Line Items]
Trading securities	528,000,000		528,000,000		$ 429,000,000
Residential
Investment Holdings [Line Items]
Marketable securities, due from five to ten years	3,000,000		3,000,000
Residential \| AFS securities retained, at fair value
Investment Holdings [Line Items]
Securities pledged as collateral	$ 70,000,000		$ 70,000,000