Debt instrument extension period.

No definition available.

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- Definition

Debt Instrument, Notification Of Intention To Terminate, Expiration Period

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Number of Extensions Available

+ References

No definition available.

+ Details

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- Definition

Number of Subsidiaries, Covenant Terms

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Secured Debt Arrangements, Net - Additional Information (Details)	1 Months Ended				3 Months Ended
	Jul. 31, 2018	Jun. 30, 2018	Nov. 30, 2017 USD ($) extension	May 31, 2017 USD ($) subsidiary	Mar. 31, 2019 USD ($)	Mar. 31, 2019 GBP (£)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 GBP (£)	Sep. 30, 2018 USD ($)
Debt Instrument [Line Items]
Borrowings outstanding					$ 2,141,939,000		$ 1,879,522,000
Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility					3,241,167,000		3,124,725,000
Securities sold under agreements to repurchase, gross					2,159,767,000
Borrowings outstanding					2,141,939,000		1,879,522,000
Line of Credit [Member] \| JP Morgan Facility [Member]
Debt Instrument [Line Items]
Securities sold under agreements to repurchase, gross					$ 923,336,000
Line of Credit [Member] \| DB Repurchase Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility									$ 1,000,000,000
Extension option					1 year
Securities sold under agreements to repurchase, gross					$ 616,952,000
Borrowings outstanding					617,000,000	£ 108,200,000
Line of Credit [Member] \| Goldman Sachs Repurchase Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility			$ 300,000,000.0		500,000,000		300,000,000
Number of extensions available \| extension			2
Extension option			1 year
Securities sold under agreements to repurchase, gross					233,312,000
Borrowings outstanding					233,312,000		210,072,000
Line of Credit [Member] \| Credit Suisse Facility [Member]
Debt Instrument [Line Items]
Term after either party notifies the other party of intention to terminate		6 months
Line of Credit [Member] \| HSBC Facility [Member]
Debt Instrument [Line Items]
Securities sold under agreements to repurchase, gross					49,911,000
Line of credit, amount outstanding					49,900,000	38,300,000
JP Morgan Facility [Member] \| Line of Credit [Member] \| JP Morgan Facility [Member]
Debt Instrument [Line Items]
Number of subsidiaries \| subsidiary				2
Amended and Restated JPMorgan Facility [Member] \| Line of Credit [Member] \| JP Morgan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility				$ 1,355,000,000
Extension option				1 year
Securities sold under agreements to repurchase, gross					923,300,000	38,000,000
Repurchase Facility [Member] \| Line of Credit [Member] \| JP Morgan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility				$ 1,250,000,000
Asset Specific Financing [Member] \| Line of Credit [Member] \| JP Morgan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility				$ 105,000,000
USD \| Line of Credit [Member] \| JP Morgan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility					1,305,435,000		1,333,503,000
Borrowings outstanding					873,771,000		680,141,000
USD \| Line of Credit [Member] \| DB Repurchase Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility					858,918,936		904,181,000
Borrowings outstanding					475,871,000		419,823,000
USD \| Line of Credit [Member] \| Credit Suisse Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility					188,037,000		187,117,000
Securities sold under agreements to repurchase, gross					188,037,000
Borrowings outstanding					188,037,000		187,117,000
Term after either party notifies the other party of intention to terminate	6 months
GBP \| Line of Credit [Member] \| JP Morgan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility					49,565,000		48,497,000
Borrowings outstanding					49,565,000		48,497,000
GBP \| Line of Credit [Member] \| DB Repurchase Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility \| £						141,081,064		£ 150,819,000
Borrowings outstanding \| £						141,081,000		£ 150,819,000
GBP \| Line of Credit [Member] \| Credit Suisse Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility					148,219,000		151,773,000
Securities sold under agreements to repurchase, gross					148,219,000
Borrowings outstanding					148,200,000	£ 113,700,000	151,773,000
GBP \| Line of Credit [Member] \| HSBC Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing under facility					49,911,000		48,835,000
Borrowings outstanding					$ 49,911,000		$ 48,835,000