Credit facility covenant, maximum distribution payout ratio of funds from operations

No definition available.

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- Definition

Credit facility covenant, percentage of net equity offering proceeds and interest in Operating Partnership in addition to minimum tangible net worth requirement

+ References

No definition available.

+ Details

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- Definition

Debt extension period

+ References

No definition available.

+ Details

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- Definition

Leverage Ratio Limit Under Existing Revolving Credit Facility

+ References

No definition available.

+ Details

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- Definition

Line of credit facility accordion feature.

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility Weighted Average Percentage Outstanding Interest Rate.

+ References

No definition available.

+ Details

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- Definition

The maximum percentage of debt to gross asset value for the two consecutive fiscal quarters immediately following the acquisition .

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of unemcumbered asset pool capitalized value

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of unencumbered asset pool capitalized value for two consecutive quarters

+ References

No definition available.

+ Details

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- Definition

Percentage of maximum debt to gross asset value.

+ References

No definition available.

+ Details

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- Definition

Percentage of operating partnerships gross asset value.

+ References

No definition available.

+ Details

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- Definition

Unencumbered asset pool debt yield limit

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Percentage of unencumbered asset pool debt yield for the two consecutive fiscal quarters immediately following a material acquisition for which the Operating Partnership has provided written notice to the Agent.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

The contingent increase above the maximum borrowing capacity under the credit facility, if any one or more of the existing banks or new banks agree to provide such increased commitment amount.

+ References

No definition available.

+ Details

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

- 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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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ References

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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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Data Type:	xbrli:stringItemType
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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Average fixed interest rate related to the group of interest rate derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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

- Definition

The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)(a)
-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998

+ Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=qts_TermLoanMaturingApril272021Member
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- Details

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- Details

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Period Type:

- Details

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Period Type:

- Details

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Period Type:

- Details

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- Details

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- Details

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Debt (Unsecured Credit Facility Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Apr. 05, 2017	Mar. 31, 2017
Debt Instrument [Line Items]
Percentage of operating partnerships gross asset value	15.00%
Interest Rate Swap
Debt Instrument [Line Items]
Weighted average effective fixed interest rate			3.50%
Term Loan
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	$ 700,000,000
Outstanding debt	$ 700,000,000
Term Loan Maturing April 27, 2021
Debt Instrument [Line Items]
Maturity date	Apr. 27, 2023
Term Loan Maturing December 17, 2020
Debt Instrument [Line Items]
Maturity date		Dec. 17, 2022
Revolving Credit Facility
Debt Instrument [Line Items]
Maturity date	Dec. 17, 2021
Debt Instrument Carrying Amount	$ 138,000,000			$ 131,000,000
Outstanding debt	138,000,000			$ 131,000,000
Credit facility availability	$ 820,000,000
Maximum percentage of unencumbered asset pool capitalized value	60.00%
Maximum percentage of unencumbered asset pool capitalized value for two consecutive quarters	65.00%
Unencumbered asset pool debt yield limit	14.00%
Unencumbered asset pool debt yield limit for two consecutive quarters	12.50%
Leverage ratio	1.70%
Letter of Credit [Member]
Debt Instrument [Line Items]
Letter of credit outstanding	$ 2,100,000
Line of credit facility weighted average interest rate outstanding percentage	3.36%
Unsecured Credit Facility
Debt Instrument [Line Items]
Line of credit facility accordion feature	$ 400,000,000
Minimum \| Term Loan \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.50%
Minimum \| Term Loan \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	0.50%
Minimum \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.55%
Minimum \| Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	0.55%
Maximum \| Term Loan \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	2.10%
Maximum \| Term Loan \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.10%
Maximum \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	2.15%
Maximum \| Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.15%
Unsecured Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 1,520,000,000
Debt extension period	1 year
Additional contingent borrowing capacity, maximum	$ 1,920,000,000
Debt Instrument Carrying Amount	838,000,000
Outstanding debt	838,000,000
Minimum tangible net worth	$ 1,209,000,000
Credit facility covenant, percentage ownership requirements in addition to minimum tangible net worth	75.00%
Credit facility covenant, maximum distribution payout ratio of funds from operations	95.00%
Maximum percentage on gross asset value	60.00%
Maximum percentage to gross asset value for the next two quarters	65.00%
Debt Instrument, Covenant Compliance	the Company was in compliance with all of its covenants
Unsecured Credit Facility \| Term Loan Maturing April 27, 2021
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		350,000,000
Unsecured Credit Facility \| Term Loan Maturing December 17, 2020
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		350,000,000
Unsecured Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 820,000,000
Maturity date		Dec. 17, 2021
Debt Instrument Carrying Amount	$ 138,000,000
Outstanding debt	$ 138,000,000