Land, Buildings and Improvements and Assets Held for Sale - Summary of Assets Held for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Real Estate [Abstract]
Land, buildings and improvements	$ 0	$ 10,628
Accumulated depreciation and amortization	0	(2,359)
Assets held for sale, net	$ 0	$ 8,269

Assets Held-for-sale, Not Part of Disposal Group, Accumulated Depreciation

No definition available.

Name:	wpc_AssetsHeldForSaleNotPartOfDisposalGroupAccumulatedDepreciation
Namespace Prefix:	wpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant