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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Period Type:	instant

- Definition

Debt extension period

+ References

No definition available.

+ Details

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

- Definition

The ratio of consolidated EBITDA, subject to certain adjustments, to consolidated fixed charges

+ References

No definition available.

+ Details

Name:	qts_FixedChargeCoverageRatio
Namespace Prefix:	qts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Leverage Ratio Limit Under Existing Revolving Credit Facility

+ References

No definition available.

+ Details

Name:	qts_LeverageRatioLimitUnderExistingRevolvingCreditFacility
Namespace Prefix:	qts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit facility accordion feature.

+ References

No definition available.

+ Details

Name:	qts_LineOfCreditFacilityAccordionFeature
Namespace Prefix:	qts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Credit facility agreement date.

+ References

No definition available.

+ Details

Name:	qts_LineOfCreditFacilityAgreementDate
Namespace Prefix:	qts_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility Weighted Average Percentage Outstanding Interest Rate.

+ References

No definition available.

+ Details

Name:	qts_LineOfCreditFacilityWeightedAveragePercentageOutstanding
Namespace Prefix:	qts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit maximum borrowing capacity including accordion option.

+ References

No definition available.

+ Details

Name:	qts_LineOfCreditMaximumBorrowingCapacityIncludingAccordionOption
Namespace Prefix:	qts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum the credit facility may be increased up until

+ References

No definition available.

+ Details

Name:	qts_MaximumCreditFacilityMayBeIncreasedUpUntil
Namespace Prefix:	qts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum percentage of unemcumbered asset pool capitalized value

+ References

No definition available.

+ Details

Name:	qts_MaximumPercentageOfUnemcumberedAssetPoolCapitalizedValue
Namespace Prefix:	qts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage change in maximum leverage ratio required for incremental decrease in interest rate

+ References

No definition available.

+ Details

Name:	qts_PercentageChangeInMaximumLeverageRatioRequiredForIncrementalDecreaseInInterestRate
Namespace Prefix:	qts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Unencumbered asset pool debt yield limit

+ References

No definition available.

+ Details

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Namespace Prefix:	qts_
Data Type:	num:percentItemType
Balance Type:	na
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

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
Balance Type:	na
Period Type:	duration

- Definition

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

+ 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(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- 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

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

- Definition

Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

+ Details

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Balance Type:	na
Period Type:	duration

- 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

+ Details

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

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

+ 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

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

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

Name:	us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph f
-Article 4

+ Details

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

- Details

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Balance Type:
Period Type:

- Details

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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
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- Details

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Debt (Unsecured Credit Facility Narrative) (Details) - USD ($)	1 Months Ended				12 Months Ended
	Oct. 31, 2015	Dec. 31, 2014	Jul. 31, 2014	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2013
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date					Dec. 17, 2019
Credit facility availability					$ 600,000,000
Maximum percentage of unencumbered asset pool capitalized value					60.00%
Unencumbered asset pool debt yield limit					14.00%
Richmond Credit Facility [Member]
Debt Instrument [Line Items]
Current revolving credit facility					$ 120,000,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Letter of credit outstanding					$ 2,000,000
Unsecured Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility accordion feature				$ 100,000,000
Minimum [Member] \| Richmond Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Leverage ratio					2.10%
Maximum [Member] \| Richmond Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Leverage ratio					2.85%
Unsecured Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility agreement date						May 01, 2013
Credit facility maximum borrowing capacity	$ 900,000,000	$ 650,000,000			$ 900,000,000	$ 575,000,000
Line of credit facility accordion feature	200,000,000
Increase the amount of line of credit facility	250,000,000
Maximum the credit facility may be increased up until					1,100,000,000
Letter of credit outstanding					$ 524,000,000
Credit facility covenant terms					(i) the outstanding principal balance of the loans and letter of credit liabilities cannot exceed the unencumbered asset pool availability (as defined in the third amended and restated credit agreement), (ii) a maximum leverage ratio of total indebtedness to gross asset value (as defined in the third amended and restated credit agreement) not in excess of 60%, (iii) a minimum fixed charge coverage ratio (defined as the ratio of consolidated EBITDA, subject to certain adjustments, to consolidated fixed charges) for the prior two most recently-ended calendar quarters of not less than 1.70 to 1.00, (iv) tangible net worth of at least $958 million plus 80% of the sum of net equity offering proceeds and the value of interests in the Operating Partnership issued upon contribution of assets to the Operating Partnership or its subsidiaries, (v) unhedged variable rate debt not greater than 35% of gross asset value and (vi) a maximum distribution payout ratio of the greater of (a) 95% of the Company's "funds from operations" (as defined in the agreement) and (b) the amount required for QTS to qualify as a REIT under the Code.
Minimum tangible net worth					$ 958,000,000
Line of credit facility weighted average interest rate outstanding percentage					1.84%
Credit facility covenant, maximum distribution payout ratio of funds from operations					95.00%
Percentage change in maximum leverage ratio required for incremental decrease in interest rate					5.00%
Unsecured Credit Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 100,000,000	$ 150,000,000			$ 225,000,000
Unsecured credit facility term		5 years				5 years
Maturity date		Dec. 17, 2019
Letter of credit outstanding					$ 300,000,000
Repayment of debt			$ 75,000,000
Unsecured Credit Facility [Member] \| Term Loan Maturing April 27, 2021 [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 150,000,000
Maturity date	Apr. 27, 2021
Unsecured Credit Facility [Member] \| Term Loan Maturing December 20, 2020 [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 150,000,000
Maturity date	Dec. 17, 2020
Unsecured Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 600,000,000	$ 550,000,000				$ 350,000,000
Unsecured credit facility term		4 years				4 years
Debt extension period	1 year	1 year				1 year
Maturity date	Dec. 17, 2019
Letter of credit outstanding					$ 224,000,000
Unsecured Credit Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 30,000,000
Unsecured Credit Facility [Member] \| Operating Partnership [Member]
Debt Instrument [Line Items]
Credit facility covenant, percentage ownership requirements in addition to minimum tangible net worth					80.00%
Unsecured Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio					170.00%
Unsecured Credit Facility [Member] \| Minimum [Member] \| Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.50%
Unsecured Credit Facility [Member] \| Minimum [Member] \| Term Loan [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	0.50%
Unsecured Credit Facility [Member] \| Minimum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date		Dec. 17, 2018
Unsecured Credit Facility [Member] \| Minimum [Member] \| Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.55%
Unsecured Credit Facility [Member] \| Minimum [Member] \| Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	0.55%
Unsecured Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio					60.00%
Ratio of indebtedness to net capital					35
Unsecured Credit Facility [Member] \| Maximum [Member] \| Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	2.10%
Unsecured Credit Facility [Member] \| Maximum [Member] \| Term Loan [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.10%
Unsecured Credit Facility [Member] \| Maximum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date		Dec. 17, 2019
Unsecured Credit Facility [Member] \| Maximum [Member] \| Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	2.15%
Unsecured Credit Facility [Member] \| Maximum [Member] \| Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument spread on variable interest rate	1.15%