Acquisition, Preferred Units, Issued

No definition available.

Name:	rexr_AcquisitionPreferredUnitsIssued
Namespace Prefix:	rexr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The contractual price of a business combination or asset acquisition

+ References

No definition available.

+ Details

Name:	rexr_AcquisitionPurchasePrice
Namespace Prefix:	rexr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of buildings acquired.

+ References

No definition available.

+ Details

Name:	rexr_NumberOfBuildingsAcquired
Namespace Prefix:	rexr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e848-128460

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e845-128460

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of limited partner units issued.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

+ Details

Name:	us-gaap_LimitedPartnersCapitalAccountUnitsIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Net rentable area for properties owned.

+ References

No definition available.

+ Details

Name:	us-gaap_NetRentableArea
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

+ Details

Name:	us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569655-111683

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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

- Definition

Cash outflow related to amounts given in advance to show or confirm an intention to complete an acquisition of land, buildings, other structures, or any item classified as real estate.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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

- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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

- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
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

Name:	us-gaap_RealEstateLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_NoncontrollingInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=rexr_OperatingPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_PropertiesAcquiredonMarch52020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PreferredUnitsByNameAxis=rexr_Series2CPOPUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A701751KingshillPlaceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A26012641ManhattanBeachBlvdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A24102420SantaFeAvenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A11600LosNietosRoadMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A5160RichtonStreetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A2205126thStreetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A1183211954LaCienegaBlvdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A76127642WoodwindDriveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A960970KnoxStreetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rexr_A25781AtlanticOceanDriveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investments in Real Estate - Summary of Acquired Wholly Owned Industrial Properties (Detail) $ in Thousands		3 Months Ended		12 Months Ended
	Mar. 05, 2020 USD ($) building shares	Mar. 31, 2020 USD ($) ft² building	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Real Estate [Line Items]
Noncash or Part Noncash Acquisition, Debt Assumed		$ 45,833	$ 0
Payments for Deposits on Real Estate Acquisitions				$ 9,700
Noncontrolling Interest, Increase from Subsidiary Equity Issuance		$ 63,277
Rentable Square Feet \| ft²		863,484
Number of Buildings \| building		25
Acquisition Purchase Price		$ 203,155
Secured Debt [Member]
Real Estate [Line Items]
Noncash or Part Noncash Acquisition, Debt Assumed		44,700
Noncontrolling Interests
Real Estate [Line Items]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance		63,277
Noncontrolling Interests \| Operating Partnership
Real Estate [Line Items]
Limited Partners' Capital Account, Units Issued \| shares	1,406,170
Properties Acquired on March 5, 2020 [Member]
Real Estate [Line Items]
Purchase price		$ 56,200
Number of Buildings \| building	10
Properties Acquired on March 5, 2020 [Member] \| Series 2 CPOP Units [Member]
Real Estate [Line Items]
Acquisition, preferred units issued (in units) \| shares	906,374
Preferred Unit, Distribution Rate, Percentage	4.00%
Properties Acquired on March 5, 2020 [Member] \| Noncontrolling Interests
Real Estate [Line Items]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	$ 63,300
701-751 Kingshill Place
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		169,069
Number of Buildings \| building		6
Acquisition Purchase Price		$ 32,968
2601-2641 Manhattan Beach Boulevard
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		126,726
Number of Buildings \| building		6
Acquisition Purchase Price		$ 38,230
2410-2420 Santa Fe Avenue
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		112,000
Number of Buildings \| building		1
Acquisition Purchase Price		$ 34,700
11600 Los Nietos Road
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		103,982
Number of Buildings \| building		1
Acquisition Purchase Price		$ 16,608
5160 Richton Street
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		94,976
Number of Buildings \| building		1
Acquisition Purchase Price		$ 15,605
2205 126th Street
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		63,532
Number of Buildings \| building		1
Acquisition Purchase Price		$ 17,100
11832-11954 La Cienega Boulevard
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		63,462
Number of Buildings \| building		4
Acquisition Purchase Price		$ 19,150
7612-7642 Woodwind Drive
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		62,377
Number of Buildings \| building		3
Acquisition Purchase Price		$ 13,719
960-970 Knox Street
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		39,400
Number of Buildings \| building		1
Acquisition Purchase Price		$ 9,600
25781 Atlantic Ocean Drive
Real Estate [Line Items]
Date of Acquisition		Mar. 05, 2020
Rentable Square Feet \| ft²		27,960
Number of Buildings \| building		1
Acquisition Purchase Price		$ 5,475