Achieved return in total capital investment for payout of interest award.

No definition available.

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Period Type:	duration

- Definition

Aggregate fair value of equity award.

+ References

No definition available.

+ Details

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

- Definition

Aggregate special limited partnership interest distribution threshold, percentage.

+ References

No definition available.

+ Details

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- Definition

Aggregate special limited partnership interest distribution threshold, value.

+ References

No definition available.

+ Details

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- Definition

Allocated Interest compensation expense.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Bonus pool contribution.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Estimated percentage of initial shares granted to be issued.

+ References

No definition available.

+ Details

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

- Definition

Expected distribution rate for grants.

+ References

No definition available.

+ Details

Name:	qre_ExpectedDistributionRateForGrants
Namespace Prefix:	qre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of liability award.

+ References

No definition available.

+ Details

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Namespace Prefix:	qre_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Interest Compensation Payment Award, Award Vesting Period

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
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- Definition

Interest Compensation Payment Award, Award Vesting Rights, Percentage

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Interest compensation payment award, award vesting rights, percentage after disposition of assets

+ References

No definition available.

+ Details

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- Definition

Interest compensation payment award, award vesting rights upon effective grant date, percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	qre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Investors equity return percentage.

+ References

No definition available.

+ Details

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

- Definition

Paired returns in the correlation matrix.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Percentage of interest in special limited partnership for executives and other key employees.

+ References

No definition available.

+ Details

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Namespace Prefix:	qre_
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Balance Type:	na
Period Type:	duration

- Definition

Predecessor carried percentage interest in each property.

+ References

No definition available.

+ Details

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

- Definition

Predecessor distribution receivable percentage.

+ References

No definition available.

+ Details

Name:	qre_PredecessorDistributionReceivablePercentage
Namespace Prefix:	qre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Predecessor equity contribution percentage.

+ References

No definition available.

+ Details

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

- Definition

Predecessor percentage of distribution after distributions to investors.

+ References

No definition available.

+ Details

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Namespace Prefix:	qre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Predecessor purchase percentage interest in each property.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph g(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809

+ Details

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

+ Details

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

+ Details

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- Definition

The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

No definition available.

+ Details

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- Definition

The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

No definition available.

+ Details

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Equity-Based Compensation (Narrative) (Details) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended				12 Months Ended		1 Months Ended	2 Months Ended	9 Months Ended	12 Months Ended
Equity-Based Compensation (Narrative) (Details) (USD $)	Dec. 21, 2010	Dec. 31, 2012	Dec. 31, 2010 Service Restricted Units [Member]	Dec. 31, 2012 Service Restricted Units [Member]	Dec. 31, 2011 Service Restricted Units [Member]	Dec. 31, 2012 Performance Restricted Units [Member]	Dec. 31, 2011 Performance Restricted Units [Member]	Dec. 21, 2010 Predecessor Compensation Plan Equity Classified Awards [Member]	Dec. 21, 2010 Predecessor Compensation Plan Liability Classified Awards [Member]	Dec. 21, 2010 Predecessor General Partnership Funded Interest [Member]	Nov. 30, 2010 Predecessor General Partnership Funded Interest [Member]	Sep. 30, 2010 Predecessor General Partnership Funded Interest [Member]	Dec. 21, 2010 Predecessor General Partnership Funded Interest [Member]	Dec. 31, 2009 Predecessor General Partnership Funded Interest [Member]	Dec. 21, 2010 Predecessor General Partner Promote Interest [Member]	Dec. 31, 2009 Predecessor General Partner Promote Interest [Member]	Dec. 21, 2010 Predecessor Purchase/Carry Interests [Member] item	Dec. 31, 2009 Predecessor Purchase/Carry Interests [Member]	Dec. 21, 2010 Predecessor Performance Cash Deferred Compensation Plan [Member]	Dec. 31, 2012 Minimum [Member] Performance Restricted Units [Member]	Dec. 21, 2010 Minimum [Member] Predecessor Performance Cash Deferred Compensation Plan [Member] item	Dec. 31, 2012 Maximum [Member] Performance Restricted Units [Member]	Dec. 21, 2010 Maximum [Member] Predecessor Performance Cash Deferred Compensation Plan [Member] item	Dec. 21, 2010 Predecessor Adjustment For 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common unit awards authorized		1,800,000
Compensation expense			$ 100,000	$ 3,100,000	$ 1,400,000	$ 200,000
Final shares to be issued based on initial shares granted, percentage																				0.00%		225.00%
Risk free rate						0.40%
Volatility rate minimum						31.00%
Volatility rate maximum						32.00%
Paired returns in the correlation matrix																				40.00%		73.80%
Expected distribution rate for grants						10.00%
Weighted average grant date fair value, granted			$ 20.03	$ 18.22	$ 20.51	$ 10.35
Restricted unit awards outstanding			148,000	550,241	271,000	118,082
Restricted unit awards unamortized grant date fair value				8,200,000		1,000,000
Weighted average amortization period of grant date fair value, years				2 years 4 months 24 days		2 years 7 months 6 days
Interest compensation expense								1,600,000	1,900,000	200,000	200,000	200,000		200,000	200,000	100,000	600,000	400,000	1,900,000					600,000
Predecessor equity contribution percentage													3.00%
Predecessor distribution receivable percentage													3.00%
Investors equity return percentage															8.00%
Predecessor percentage of distribution after distributions to investors															14.00%
Predecessor purchase percentage interest in each property																	2.00%
Predecessor carried percentage interest in each property																	2.00%
Achieved return in total capital investment for payout of interest award																	1.5				1.75		2.0
Bonus pool contribution																					12,500,000		15,000,000
Percentage of interest in special limited partnership for executives and other key employees															100.00%		19.50%
Aggregate special limited partnership interest distribution threshold, value															12,800,000
Aggregate special limited partnership interest distribution threshold, percentage															39.00%
Interest compensation payment award, award vesting rights upon effective grant date, percentage																	50.00%
Interest compensation payment award, award vesting rights, percentage													15.00%		15.00%		7.50%		15.00%
Interest compensation payment award, award vesting period	5 years														5 years		5 years		5 years
Interest compensation payment award, award vesting rights, percentage after disposition of assets													25.00%		25.00%		12.50%		25.00%
Aggregate fair value of equity award										300,000			300,000		300,000		1,800,000
Fair value of liability award										$ 700,000			$ 700,000		$ 1,100,000		$ 300,000