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Debt - Unsecured Revolving Credit and Term Loan Facility (Details) - Revolving Credit Facility | 1 Months Ended
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Aug. 31, 2017 USD ($) option
Unsecured Revolving Credit Facility and Term Loan |
Line of Credit Facility [Line Items] |
Maximum borrowing capacity | $ 1,365,000,000.000
Unsecured revolving credit facility higher borrowing capacity option | 1,750,000,000.00
Unsecured revolving credit facility |
Line of Credit Facility [Line Items] |
Current borrowing capacity | $ 1,100,000,000.0
Number of options to extend maturity | option | 2
Extension period (in months) | 6 months
Unsecured term loan facility |
Line of Credit Facility [Line Items] |
Current borrowing capacity | $ 265,000,000
Minimum | Unsecured revolving credit facility |
Line of Credit Facility [Line Items] |
Extension fee, as a percent of outstanding commitments under revolving credit facility (in percentage) | 0.0625%
Maximum | Unsecured revolving credit facility |
Line of Credit Facility [Line Items] |
Extension fee, as a percent of outstanding commitments under revolving credit facility (in percentage) | 0.075%

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- Definition Line of Credit Facility, Extension Fee, Percent of Outstanding Commitments Under Revolving Credit Facility + References No definition available. + Details
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- Definition Line of Credit Facility, Extension Period + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any 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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- 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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