Debt Instrument, Prepayment of Premium Percentage, Maximum

No definition available.

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- Definition

Represents the term of extension option of the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of line of credit maximum borrowing capacity as a percentage of maximum principal amount.

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

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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

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Balance Type:	credit
Period Type:	instant

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- 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

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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Balance Type:	debit
Period Type:	duration

- 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

+ Details

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Balance Type:	credit
Period Type:	instant

- 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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Balance Type:	debit
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Debt - Additional Information (Details) - USD ($)				3 Months Ended
Debt - Additional Information (Details) - USD ($)	Dec. 01, 2017	Mar. 07, 2017	Jun. 10, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Aug. 11, 2016	Jul. 07, 2016	Jun. 09, 2016	Jan. 07, 2016
Debt
Long-term debt, gross						$ 1,601,522,000		$ 1,491,680,000
Interest expense, debt				$ 16,000,000.0	$ 9,300,000
Credit Agreement Amendment
Debt
Current borrowing capacity			$ 1,100,000,000
Maximum borrowing capacity as a percentage of maximum principal amount			10.00%
Accordion feature, increase limit			$ 500,000,000
Maximum borrowing capacity under accordion feature			$ 1,600,000,000
Prepayment of premium percentage, maximum			2.00%
Unused fee (as a percent)				0.25%
Credit Agreement Amendment \| London Interbank Offered Rate (LIBOR)
Debt
Reference rate (as a percent)				1.20%
Series A
Debt
Interest rate (as a percent)									4.09%			4.03%
Series B
Debt
Interest rate (as a percent)									4.18%			4.43%
Series C
Debt
Interest rate (as a percent)												4.57%
Series D
Debt
Interest rate (as a percent)												4.74%
Revolving credit facility
Debt
Current borrowing capacity						611,000,000.0
Amount outstanding						222,000,000.0
Term of extension option				1 year
Revolving credit facility \| Credit Agreement Amendment \| Minimum
Debt
Current borrowing capacity											$ 750,000,000
Revolving credit facility \| Credit Agreement Amendment \| Maximum
Debt
Current borrowing capacity			$ 850,000,000
Term Loan
Debt
Amount outstanding						250,000,000.0				$ 250.0
Term Loan \| Credit Agreement Amendment
Debt
Current borrowing capacity			$ 250,000,000
Debt instrument, term			7 years
Letter of Credit
Debt
Amount outstanding						$ 17,000,000.0
Senior notes
Debt
Effective fixed interest rate		4.30%
Debt instrument, face amount		$ 400,000,000.0							$ 75,000,000.0			$ 150,000,000.0
Redemption price, percentage	99.78%	99.68%
Proceeds from issuance of debt		$ 396,100,000
Senior notes \| Series A
Debt
Debt instrument, face amount									25,000,000.0			15,000,000.0
Senior notes \| Series B
Debt
Debt instrument, face amount									$ 25,000,000.0			45,000,000.0
Senior notes \| Series C
Debt
Interest rate (as a percent)									4.24%
Debt instrument, face amount									$ 25,000,000.0			45,000,000.0
Senior notes \| Series D
Debt
Debt instrument, face amount												$ 45,000,000.0
Interest Rate Swap \| Unsecured Debt \| London Interbank Offered Rate (LIBOR)
Debt
Effective fixed interest rate				1.07%			2.87%			1.07%
Interest rate (as a percent)										2.87%
Operating Partnership \| Revolving credit facility
Debt
Interest rate at end of period (as a percent)				3.84%
Operating Partnership \| Revolving credit facility \| London Interbank Offered Rate (LIBOR)
Debt
Reference rate (as a percent)				1.80%