Debt - Revolving Credit Facility (Details) - Unsecured Revolving Credit Facility - Line of Credit	1 Months Ended
Apr. 30, 2019 USD ($) extension_option	Sep. 30, 2019 USD ($)
Line of Credit Facility [Line Items]
Initial term	5 years
Borrowing capacity	$ 500,000,000.0
Increase amount of borrowings, subject to lenders' approval	$ 200,000,000.0
Number of extension options \| extension_option	2
Extension option term	1 year
Amounts outstanding under the Revolving Credit Facility		$ 0
Maximum leverage ratio	3.0
Maximum leverage ratio, if acquisition consummated (up to four quarters)	3.5
Minimum interest coverage ratio	3.0
Base Rate \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.00%
Base Rate \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.375%
Eurocurrency Rate \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.91%
Eurocurrency Rate \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.375%
Federal Funds Rate \| Variable Rate Component, Federal Funds
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
ICE Benchmark Administration Settlement Rate \| Variable Rate Component, ICE Benchmark Administration Settlement Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%

Debt Covenant, Maximum Leverage Ratio

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- Definition

Debt Covenant, Maximum Leverage Ratio, Up To Four Quarters, If Acquisition Consummated

+ References

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- Definition

Debt Covenant, Minimum Interest Coverage Ratio

+ References

No definition available.

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- Definition

Line of credit facility, accordion feature, increase limit, subject to certain conditions by obtaining additional commitments from existing and/or new lenders.

+ References

No definition available.

+ Details

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- Definition

Long Term Debt Term, Extension Option

+ References

No definition available.

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- Definition

Long Term Debt Term, Number of Extension Options

+ References

No definition available.

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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.

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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
-Publisher FASB
-Name Accounting Standards Codification
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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.

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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

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- Definition

Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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