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Credit Facilities - Prior Credit Facility - Terms (Details) - JPMorgan Chase Bank, N.A. - Revolving Credit Facility | 12 Months Ended
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Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items] |
Maximum borrowing capacity (up to) | $ 740,000,000
Commitment fee percentage | 50.00%
Above Threshold |
Line of Credit Facility [Line Items] |
Unused capacity commitment fee | 0.25%
Below Threshold |
Line of Credit Facility [Line Items] |
Unused capacity commitment fee | 0.15%
LIBOR | Line of Credit Facility, Base Rate, Option Three |
Line of Credit Facility [Line Items] |
Interest rate spread | 1.00%
Federal Funds | Line of Credit Facility, Base Rate, Option Two |
Line of Credit Facility [Line Items] |
Interest rate spread | 0.50%
Minimum | Base Rate | Line of Credit Facility, Interest Rate, Option Two |
Line of Credit Facility [Line Items] |
Interest rate spread | 0.60%
Minimum | LIBOR | Line of Credit Facility, Interest Rate, Option One |
Line of Credit Facility [Line Items] |
Interest rate spread | 1.60%
Maximum | Base Rate | Line of Credit Facility, Interest Rate, Option Two |
Line of Credit Facility [Line Items] |
Interest rate spread | 1.20%
Maximum | LIBOR | Line of Credit Facility, Interest Rate, Option One |
Line of Credit Facility [Line Items] |
Interest rate spread | 2.20%

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- Definition Line of Credit Facility, Commitment Fee Percentage, Threshold, Unused Capacity as a Percentage of Current Capacity + 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 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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