Common Stock/Partner's Capital	12 Months Ended
Dec. 31, 2021
Equity [Abstract]
Common Stock/Partner's Capital	9. Common Stock/Partner’s Capital Medical Properties Trust, Inc. 2021 Activity On January 11, 2021, we completed an underwritten public offering of 36.8 million shares of our common stock, resulting in net proceeds of approximately $711 million, after deducting underwriting discounts and commissions and offering expenses. In addition, we sold 16.3 million shares of common stock under our at-the-market equity offering program during 2021, resulting in net proceeds of approximately $340 million. 2020 Activity In 2020, we sold 21.0 million shares of common stock under our at-the-market equity offering program, resulting in net proceeds of approximately $411 million. 2019 Activity On November 8, 2019, we completed an underwritten public offering of 57.5 million shares of our common stock, resulting in net proceeds of $1.026 billion, after deducting underwriting discounts and commissions and offering expenses. On July 18, 2019, we completed an underwritten public offering of 51.75 million shares of our common stock, resulting in net proceeds of $858.1 million, after deducting underwriting discounts and commissions and offering expenses. In 2019, we sold 36.1 million shares of common stock under our at-the-market equity offering program, resulting in net proceeds of approximately $650 million. MPT Operating Partnership, L.P. At December 31, 2021, the Operating Partnership is made up of a general partner, Medical Properties Trust, LLC (“General Partner”) and limited partners, including the Company (which owns 100% of the General Partner) and MPT TRS, Inc. (which is 100% owned by the General Partner). By virtue of its ownership of the General Partner, the Company has a 100% ownership interest in the Operating Partnership. In regards to distributions, the Operating Partnership shall distribute cash at such times and in such amounts as are determined by the General Partner in its sole and absolute discretion, to common unit holders who are common unit holders on the record date. However, per the Second Amended and Restated Agreement of Limited Partnership of MPT Operating Partnership, L.P. (“Operating Partnership Agreement”), the General Partner shall use its reasonable efforts to cause the Operating Partnership to distribute amounts sufficient to enable the Company to pay stockholder dividends that will allow the Company to (i) meet its distribution requirement for qualification as a REIT and (ii) avoid any U.S. federal income or excise tax liability imposed by the Code, other than to the extent the Company elects to retain and pay income tax on its net capital gain. In accordance with the Operating Partnership Agreement, LTIP units are treated as common units for distribution purposes. The Operating Partnership’s net income will generally be allocated first to the General Partner to the extent of any cumulative losses and then to the limited partners in accordance with their respective percentage interests in the common units issued by the Operating Partnership. Any losses of the Operating Partnership will generally be allocated first to the limited partners until their capital account is zero and then to the General Partner. In accordance with the Operating Partnership Agreement, LTIP units are treated as common units for purposes of income and loss allocations. Limited partners have the right to require the Operating Partnership to redeem part or all of their common units. It is at the Operating Partnership’s discretion to redeem such common units for cash based on the fair market value of an equivalent number of shares of the Company’s common stock at the time of redemption or, alternatively, redeem the common units for shares of the Company’s common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, or similar events. LTIP units must wait two years from the issuance of the LTIP units to be redeemed, and then converted to common units. On December 28, 2020, approximately 232 thousand LTIP units were converted to common units and then redeemed for approximately $4.9 million of cash. For each share of common stock issued by Medical Properties Trust, Inc., the Operating Partnership issues a corresponding number of operating partnership units.

Common Stock/Partner's Capital

12 Months Ended

Dec. 31, 2021

9. Common Stock/Partner’s Capital

Medical Properties Trust, Inc.

2021 Activity

On January 11, 2021, we completed an underwritten public offering of 36.8 million shares of our common stock, resulting in net proceeds of approximately $711 million, after deducting underwriting discounts and commissions and offering expenses.

In addition, we sold 16.3 million shares of common stock under our at-the-market equity offering program during 2021, resulting in net proceeds of approximately $340 million.

2020 Activity

In 2020, we sold 21.0 million shares of common stock under our at-the-market equity offering program, resulting in net proceeds of approximately $411 million.

2019 Activity

On November 8, 2019, we completed an underwritten public offering of 57.5 million shares of our common stock, resulting in net proceeds of $1.026 billion, after deducting underwriting discounts and commissions and offering expenses.

On July 18, 2019, we completed an underwritten public offering of 51.75 million shares of our common stock, resulting in net proceeds of $858.1 million, after deducting underwriting discounts and commissions and offering expenses.

In 2019, we sold 36.1 million shares of common stock under our at-the-market equity offering program, resulting in net proceeds of approximately $650 million.

MPT Operating Partnership, L.P.

At December 31, 2021, the Operating Partnership is made up of a general partner, Medical Properties Trust, LLC (“General Partner”) and limited partners, including the Company (which owns 100% of the General Partner) and MPT TRS, Inc. (which is 100% owned by the General Partner). By virtue of its ownership of the General Partner, the Company has a 100% ownership interest in the Operating Partnership.

In regards to distributions, the Operating Partnership shall distribute cash at such times and in such amounts as are determined by the General Partner in its sole and absolute discretion, to common unit holders who are common unit holders on the record date. However, per the Second Amended and Restated Agreement of Limited Partnership of MPT Operating Partnership, L.P. (“Operating Partnership Agreement”), the General Partner shall use its reasonable efforts to cause the Operating Partnership to distribute amounts sufficient to enable the Company to pay stockholder dividends that will allow the Company to (i) meet its distribution requirement for qualification as a REIT and (ii) avoid any U.S. federal income or excise tax liability imposed by the Code, other than to the extent the Company elects to retain and pay income tax on its net capital gain. In accordance with the Operating Partnership Agreement, LTIP units are treated as common units for distribution purposes.

The Operating Partnership’s net income will generally be allocated first to the General Partner to the extent of any cumulative losses and then to the limited partners in accordance with their respective percentage interests in the common units issued by the Operating Partnership. Any losses of the Operating Partnership will generally be allocated first to the limited partners until their capital account is zero and then to the General Partner. In accordance with the Operating Partnership Agreement, LTIP units are

treated as common units for purposes of income and loss allocations. Limited partners have the right to require the Operating Partnership to redeem part or all of their common units. It is at the Operating Partnership’s discretion to redeem such common units for cash based on the fair market value of an equivalent number of shares of the Company’s common stock at the time of redemption or, alternatively, redeem the common units for shares of the Company’s common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, or similar events. LTIP units must wait two years from the issuance of the LTIP units to be redeemed, and then converted to common units. On December 28, 2020, approximately 232 thousand LTIP units were converted to common units and then redeemed for approximately $4.9 million of cash.

For each share of common stock issued by Medical Properties Trust, Inc., the Operating Partnership issues a corresponding number of operating partnership units.