Leases (Lessee) - Summary of Supplemental Balance Sheet Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	May 27, 2019	Jan. 01, 2019
Right of use assets:
Real estate right of use assets, net	$ 65,661
Total right of use assets, net	76,312
Lease liabilities:
Operating leases	$ 80,960		$ 84,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	mpw:ObligationsToTenantsAndOtherLeaseLiabilities
Financing leases	$ 1,930
Finance Lease, Liability, Statement of Financial Position [Extensible List]	mpw:ObligationsToTenantsAndOtherLeaseLiabilities
Total lease liabilities	$ 82,890
Weighted average remaining lease term:
Operating leases	32 years 1 month 6 days	23 years
Finance leases	37 years 4 months 24 days
Weighted average discount rate:
Operating leases	6.30%
Finance leases	6.60%
Real Estate [Member]
Right of use assets:
Operating leases	$ 63,748
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	mpw:LandBuildingsAndImprovementsIntangibleLeaseAssetsAndOther
Finance leases	$ 1,913
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	mpw:LandBuildingsAndImprovementsIntangibleLeaseAssetsAndOther
Corporate [Member]
Right of use assets:
Operating leases	$ 10,651
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets