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Subsequent Events Subsequent Events (Details) - USD ($) |  | 3 Months Ended |
--- | --- | --- | ---
Apr. 28, 2017 | Mar. 31, 2017 | Dec. 31, 2016
Subsequent Event [Line Items] |  |  |  |
Debt facility financing amount |  |  | $ 2,924,200,000 | $ 2,622,100,000
Warehouse Facility IV [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt facility financing amount | [1],[2] |  | $ 75,000,000 |
Warehouse Facility IV [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt facility financing amount | [1],[2] | $ 100,000,000.0 |  |
LIBOR [Member] | Warehouse Facility IV [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | [1],[3] |  | 2.00% |
LIBOR [Member] | Warehouse Facility IV [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | [1],[3] | 2.25% |  |
[1] | Financing made available only to a specified subsidiary of the Company.
[2] | Interest rate cap agreements are in place to limit the exposure to increasing interest rates.
[3] | Represents the revolving maturity date. The outstanding balance will amortize after the revolving maturity date based on the cash flows of the pledged assets.

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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- Details
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- Details
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