Condensed Consolidating Financial Information - Condensed Consolidated Statements of Income (Detail) In Thousands, unless otherwise specified	0 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Jul. 01, 2014 USD ($)	Jul. 01, 2014 GBP (£)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 Eliminations [Member] USD ($)	Sep. 30, 2013 Eliminations [Member] USD ($)	Sep. 30, 2014 Eliminations [Member] USD ($)	Sep. 30, 2013 Eliminations [Member] USD ($)	Sep. 30, 2014 Parent [Member] USD ($)	Sep. 30, 2013 Parent [Member] USD ($)	Sep. 30, 2014 Parent [Member] USD ($)	Sep. 30, 2013 Parent [Member] USD ($)	Sep. 30, 2014 Subsidiary Issuers [Member] USD ($)	Sep. 30, 2013 Subsidiary Issuers [Member] USD ($)	Sep. 30, 2014 Subsidiary Issuers [Member] USD ($)	Sep. 30, 2013 Subsidiary Issuers [Member] USD ($)	Sep. 30, 2014 Subsidiary Guarantors [Member] USD ($)	Sep. 30, 2013 Subsidiary Guarantors [Member] USD ($)	Sep. 30, 2014 Subsidiary Guarantors [Member] USD ($)	Sep. 30, 2013 Subsidiary Guarantors [Member] USD ($)	Sep. 30, 2014 Non-Guarantor Subsidiaries [Member] USD ($)	Sep. 30, 2013 Non-Guarantor Subsidiaries [Member] USD ($)	Sep. 30, 2014 Non-Guarantor Subsidiaries [Member] USD ($)	Sep. 30, 2013 Non-Guarantor Subsidiaries [Member] USD ($)
Revenues
Rent billed			$ 48,063	$ 31,544	$ 136,952	$ 94,072	$ (4,133)	$ (3,295)	$ (11,715)	$ (9,045)					$ 69		$ 69		$ 45,703	$ 29,189	$ 129,167	$ 86,789	$ 6,424	$ 5,650	$ 19,431	$ 16,328
Straight-line rent			5,282	2,884	10,648	8,352													3,850	2,283	7,881	6,894	1,432	601	2,767	1,458
Income from direct financing leases			12,308	11,298	36,787	29,284	(5,308)	(4,971)	(15,860)	(14,847)									11,695	10,518	34,956	27,387	5,921	5,751	17,691	16,744
Interest and fee income			15,124	14,380	46,039	43,136	(15,873)	(7,037)	(47,606)	(21,211)					9,323	5,004	27,815	15,112	14,336	9,096	43,199	27,363	7,338	7,317	22,631	21,872
Total revenues			80,777	60,106	230,426	174,844	(25,314)	(15,303)	(75,181)	(45,103)					9,392	5,004	27,884	15,112	75,584	51,086	215,203	148,433	21,115	19,319	62,520	56,402
Expenses
Real estate depreciation and amortization			13,354	8,714	39,485	25,827													12,814	8,012	37,556	23,720	540	702	1,929	2,107
Impairment charges					50,128												289				19,002				30,837
Property-related			700	458	1,401	1,520	(9,372)	(8,266)	(27,507)	(23,892)					169	182	508	458	732	251	926	817	9,171	8,291	27,474	24,137
General and administrative			8,672	6,285	25,836	21,162									5,448	6,867	22,096	21,286	303		560		2,921	(582)	3,180	(124)
Acquisition expenses	1,900	1,100	4,886	4,179	7,933	6,457									469	4,179	3,355	6,457	1,929		2,091		2,488		2,487
Total operating expenses			27,612	19,636	124,783	54,966	(9,372)	(8,266)	(27,507)	(23,892)					6,086	11,228	26,248	28,201	15,778	8,263	60,135	24,537	15,120	8,411	65,907	26,120
Operating income (expense)			53,165	40,470	105,643	119,878	(15,942)	(7,037)	(47,674)	(21,211)					3,306	(6,224)	1,636	(13,089)	59,806	42,823	155,068	123,896	5,995	10,908	(3,387)	30,282
Other income (expense)
Other income (expense)			75	3	44	(245)									75	5	44	(38)						(2)		(207)
Earnings from equity and other interests			1,153	843	2,059	2,511																	1,153	843	2,059	2,511
Interest income (expense)			(25,481)	(15,830)	(71,455)	(45,896)	15,942	7,037	47,674	21,211					(25,400)	(16,055)	(71,944)	(46,297)	(8,304)	455	(24,836)	1,082	(7,719)	(7,267)	(22,349)	(21,892)
Debt refinancing costs					(290)												(290)
Income tax benefit (expense)			(249)	(94)	(232)	(261)													(49)		(16)		(200)	(94)	(216)	(261)
Net other income (expense)			(24,502)	(15,078)	(69,874)	(43,891)	15,942	7,037	47,674	21,211					(25,325)	(16,050)	(72,190)	(46,335)	(8,353)	455	(24,852)	1,082	(6,766)	(6,520)	(20,506)	(19,849)
Income (loss) from continuing operations			28,663	25,392	35,769	75,987									(22,019)	(22,274)	(70,554)	(59,424)	51,453	43,278	130,216	124,978	(771)	4,388	(23,893)	10,433
Income (loss) from discontinued operations				311	(2)	3,330																		311	(2)	3,330
Equity in earnings of consolidated subsidiaries net of income taxes							(80,340)	(74,794)	(145,246)	(221,413)	28,663	25,703	35,767	79,317	50,682	47,977	106,321	138,741	995	1,114	3,158	3,355
Net income			28,663	25,703	35,767	79,317	(80,340)	(74,794)	(145,246)	(221,413)	28,663	25,703	35,767	79,317	28,663	25,703	35,767	79,317	52,448	44,392	133,374	128,333	(771)	4,699	(23,895)	13,763
Income (loss) from continuing operations			28,663	25,392	35,769	75,987									(22,019)	(22,274)	(70,554)	(59,424)	51,453	43,278	130,216	124,978	(771)	4,388	(23,893)	10,433
Income (loss) from discontinued operations				311	(2)	3,330																		311	(2)	3,330
Equity in earnings of consolidated subsidiaries net of income taxes							(80,340)	(74,794)	(145,246)	(221,413)	28,663	25,703	35,767	79,317	50,682	47,977	106,321	138,741	995	1,114	3,158	3,355
Net income			28,663	25,703	35,767	79,317	(80,340)	(74,794)	(145,246)	(221,413)	28,663	25,703	35,767	79,317	28,663	25,703	35,767	79,317	52,448	44,392	133,374	128,333	(771)	4,699	(23,895)	13,763
Net income (loss) attributable to non-controlling interests			(126)	(55)	(192)	(165)	126	55	192	165	(126)	(55)	(192)	(165)	(126)	(55)	(192)	(165)
Net income attributable to MPT common stockholders			$ 28,537	$ 25,648	$ 35,575	$ 79,152	$ (80,214)	$ (74,739)	$ (145,054)	$ (221,248)	$ 28,537	$ 25,648	$ 35,575	$ 79,152	$ 28,537	$ 25,648	$ 35,575	$ 79,152	$ 52,448	$ 44,392	$ 133,374	$ 128,333	$ (771)	$ 4,699	$ (23,895)	$ 13,763