Subsequent Events - Unsecured Notes Exchange Offers (Details)	Oct. 22, 2021
Subsequent Event [Member] \| Senior Notes [Member] \| Realty Income Corporation [Member]
Subsequent Event [Line Items]
Debt instrument, percentage of principal amount outstanding classified as validly tendered and not validly withdrawn	95.00%

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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