Condensed Consolidating Financial Information - Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Real estate investments, net	$ 9,880,658	$ 10,021,938
Cash and cash equivalents	289,909	259,722	$ 376,842	$ 360,492
Tenant and other receivables, net	4,197	6,385
Intercompany	0	0
Prepaid expenses and other assets	51,500	18,487
Investments in subsidiaries	0	0
Above market lease, asset	43,801	44,588
Total assets	10,270,065	10,351,120
Liabilities
Debt, net	3,923,224	3,934,628
Due to MGM Resorts International and affiliates	147	962
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	9,758	10,240
Above market lease, liability	46,625	47,069
Accrued interest	25,119	22,565
Dividend and distribution payable	114,399	111,733
Deferred revenue	147,946	127,640
Deferred income taxes, net	28,544	28,544
Total liabilities	4,295,762	4,283,381
General partner	0	0
Limited partners	5,974,303	6,067,739
Total partners' capital	5,974,303	6,067,739
Total liabilities and shareholders’ equity	10,270,065	10,351,120
Eliminations
ASSETS
Real estate investments, net	0	0
Cash and cash equivalents	0	0	0	0
Tenant and other receivables, net	0	0
Intercompany	(1,001,634)	(1,383,397)
Prepaid expenses and other assets	0	0
Investments in subsidiaries	(8,699,073)	(8,479,388)
Above market lease, asset	0	0
Total assets	(9,700,707)	(9,862,785)
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	0	0
Intercompany	(1,001,634)	(1,383,397)
Accounts payable, accrued expenses and other liabilities	0	0
Above market lease, liability	0	0
Accrued interest	0	0
Dividend and distribution payable	0	0
Deferred revenue	0	0
Deferred income taxes, net	0	0
Total liabilities	(1,001,634)	(1,383,397)
General partner	0	0
Limited partners	(8,699,073)	(8,479,388)
Total partners' capital	(8,699,073)	(8,479,388)
Total liabilities and shareholders’ equity	(9,700,707)	(9,862,785)
Guarantor Subsidiaries | Reportable Legal Entities
ASSETS
Real estate investments, net	9,880,022	10,021,450
Cash and cash equivalents	0	0	0	0
Tenant and other receivables, net	3,821	6,086
Intercompany	0	0
Prepaid expenses and other assets	0	0
Investments in subsidiaries	0	0
Above market lease, asset	43,801	44,588
Total assets	9,927,644	10,072,124
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	0	0
Intercompany	1,001,634	1,383,397
Accounts payable, accrued expenses and other liabilities	3,822	6,086
Above market lease, liability	46,625	47,069
Accrued interest	0	0
Dividend and distribution payable	0	0
Deferred revenue	147,946	127,640
Deferred income taxes, net	28,544	28,544
Total liabilities	1,228,571	1,592,736
General partner	0	0
Limited partners	8,699,073	8,479,388
Total partners' capital	8,699,073	8,479,388
Total liabilities and shareholders’ equity	9,927,644	10,072,124
MGP Operating Partnership
ASSETS
Real estate investments, net	9,880,658	10,021,938
Cash and cash equivalents	289,909	259,722	376,842	360,492
Tenant and other receivables, net	4,197	6,385
Prepaid expenses and other assets	51,500	18,487
Above market lease, asset	43,801	44,588
Total assets	10,270,065	10,351,120
Liabilities
Debt, net	3,923,224	3,934,628
Due to MGM Resorts International and affiliates	147	962
Accounts payable, accrued expenses and other liabilities	9,758	10,240
Above market lease, liability	46,625	47,069
Accrued interest	25,119	22,565
Dividend and distribution payable	114,399	111,733
Deferred revenue	147,946	127,640
Deferred income taxes, net	28,544	28,544
Total liabilities	4,295,762	4,283,381
General partner	0	0
Limited partners	5,974,303	6,067,739
Total partners' capital	5,974,303	6,067,739
Total liabilities and shareholders’ equity	10,270,065	10,351,120
MGP Operating Partnership | Reportable Legal Entities
ASSETS
Real estate investments, net	636	488
Cash and cash equivalents	289,909	259,722	376,842	360,492
Tenant and other receivables, net	376	299
Intercompany	1,001,634	1,383,397
Prepaid expenses and other assets	51,500	18,487
Investments in subsidiaries	8,699,073	8,479,388
Above market lease, asset	0	0
Total assets	10,043,128	10,141,781
Liabilities
Debt, net	3,923,224	3,934,628
Due to MGM Resorts International and affiliates	147	962
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	5,936	4,154
Above market lease, liability	0	0
Accrued interest	25,119	22,565
Dividend and distribution payable	114,399	111,733
Deferred revenue	0	0
Deferred income taxes, net	0	0
Total liabilities	4,068,825	4,074,042
General partner	0	0
Limited partners	5,974,303	6,067,739
Total partners' capital	5,974,303	6,067,739
Total liabilities and shareholders’ equity	10,043,128	10,141,781
Co-Issuer | Reportable Legal Entities
ASSETS
Real estate investments, net	0	0
Cash and cash equivalents	0	0	$ 0	$ 0
Tenant and other receivables, net	0	0
Intercompany	0	0
Prepaid expenses and other assets	0	0
Investments in subsidiaries	0	0
Above market lease, asset	0	0
Total assets	0	0
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	0	0
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	0	0
Above market lease, liability	0	0
Accrued interest	0	0
Dividend and distribution payable	0	0
Deferred revenue	0	0
Deferred income taxes, net	0	0
Total liabilities	0	0
General partner	0	0
Limited partners	0	0
Total partners' capital	0	0
Total liabilities and shareholders’ equity	$ 0	$ 0