Name:	o_DebtInstrumentCovenantAggregateUnencumberedAssetsAsPercentageOfOutstandingUnsecuredDebt
Namespace Prefix:	o_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the debt service coverage ratio required to be maintained under financial covenants.

No definition available.

Name:	o_DebtInstrumentCovenantDebtServiceCoverageRatio
Namespace Prefix:	o_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Represents the debt to total adjusted assets ratio required to be maintained under financial covenants.

No definition available.

Name:	o_DebtInstrumentCovenantDebtToTotalAdjustedAssetsRatio
Namespace Prefix:	o_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the secured debt to total adjusted assets ratio required to be maintained under financial covenants.

No definition available.

Name:	o_DebtInstrumentCovenantSecuredDebtToTotalAdjustedAssetsRatio
Namespace Prefix:	o_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

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

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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

Weighted average interest rate of debt outstanding.

No definition available.

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

Amount of the cost of borrowed funds accounted for as interest expense for debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227