Amount of physical assets that are not yet ready to place into service as work is still in process.

No definition available.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

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- Definition

Amount of interest capitalized during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

-URI http://asc.fasb.org/extlink&oid=6504829

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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- Definition

Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph a

-Article 5

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 7

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Property and Equipment, net (Details) (USD $)	3 Months Ended
Property and Equipment, net (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Property and equipment, net
Property and equipment, at cost	$ 2,264,000,000us-gaap_PropertyPlantAndEquipmentGross		$ 2,152,300,000us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation and amortization	(1,317,100,000)		(1,249,500,000)
Work in process	121,900,000rax_WorkinProcess		154,900,000rax_WorkinProcess
Property and equipment, net	1,068,800,000us-gaap_PropertyPlantAndEquipmentNet		1,057,700,000us-gaap_PropertyPlantAndEquipmentNet
Interest capitalized	1,800,000us-gaap_InterestCostsCapitalized	0us-gaap_InterestCostsCapitalized
Computers and equipment
Property and equipment, net
Property and equipment, at cost	1,538,400,000		1,495,200,000
Computers and equipment \| Minimum
Property and equipment, net
Estimated useful lives	3 years
Computers and equipment \| Maximum
Property and equipment, net
Estimated useful lives	5 years
Computer software
Property and equipment, net
Property and equipment, at cost	338,200,000		318,900,000
Computer software \| Minimum
Property and equipment, net
Estimated useful lives	1 year
Computer software \| Maximum
Property and equipment, net
Estimated useful lives	5 years
Furniture and fixtures
Property and equipment, net
Estimated useful lives	7 years
Property and equipment, at cost	58,300,000		56,700,000
Buildings and leasehold improvements
Property and equipment, net
Property and equipment, at cost	301,700,000		253,600,000
Buildings and leasehold improvements \| Data center in the U.K. real estate project
Property and equipment, net
Construction costs placed into service	51,400,000
Buildings and leasehold improvements \| Minimum
Property and equipment, net
Estimated useful lives	2 years
Buildings and leasehold improvements \| Maximum
Property and equipment, net
Estimated useful lives	30 years
Land
Property and equipment, net
Property and equipment, at cost	27,400,000		27,900,000
Office facility build outs
Property and equipment, net
Work in process	59,700,000		51,300,000
Data center build outs
Property and equipment, net
Work in process	46,200,000		80,500,000
Capitalized software and other projects
Property and equipment, net
Work in process	$ 16,000,000		$ 23,100,000