Condensed Consolidating Financial Information - Consolidating Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Real estate investments, net	$ 9,949,410	$ 10,021,938
Cash and cash equivalents	280,117	259,722	$ 368,298	$ 360,492
Tenant and other receivables, net	2,337	6,385
Intercompany	0	0
Prepaid expenses and other assets	33,936	18,487
Investments in subsidiaries	0	0
Above market lease, asset	44,194	44,588
Total assets	10,309,994	10,351,120
Liabilities
Debt, net	3,925,203	3,934,628
Due to MGM Resorts International and affiliates	302	962
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	4,596	10,240
Above market lease, liability	46,847	47,069
Accrued interest	30,515	22,565
Dividend and distribution payable	111,733	111,733
Deferred revenue	129,708	127,640
Deferred income taxes, net	28,544	28,544
Total liabilities	4,277,448	4,283,381
General partner	0	0
Limited partners	6,032,546	6,067,739
Total partners' capital	6,032,546	6,067,739
Total liabilities and shareholders’ equity	10,309,994	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	(1,194,220)	(1,383,397)
Prepaid expenses and other assets	0	0
Investments in subsidiaries	(8,593,646)	(8,479,388)
Above market lease, asset	0	0
Total assets	(9,787,866)	(9,862,785)
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	0	0
Intercompany	(1,194,220)	(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	(1,194,220)	(1,383,397)
General partner	0	0
Limited partners	(8,593,646)	(8,479,388)
Total partners' capital	(8,593,646)	(8,479,388)
Total liabilities and shareholders’ equity	(9,787,866)	(9,862,785)
Guarantor Subsidiaries | Reportable Legal Entities
ASSETS
Real estate investments, net	9,948,771	10,021,450
Cash and cash equivalents	0	0	0	0
Tenant and other receivables, net	1,911	6,086
Intercompany	0	0
Prepaid expenses and other assets	0	0
Investments in subsidiaries	0	0
Above market lease, asset	44,194	44,588
Total assets	9,994,876	10,072,124
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	0	0
Intercompany	1,194,220	1,383,397
Accounts payable, accrued expenses and other liabilities	1,911	6,086
Above market lease, liability	46,847	47,069
Accrued interest	0	0
Dividend and distribution payable	0	0
Deferred revenue	129,708	127,640
Deferred income taxes, net	28,544	28,544
Total liabilities	1,401,230	1,592,736
General partner	0	0
Limited partners	8,593,646	8,479,388
Total partners' capital	8,593,646	8,479,388
Total liabilities and shareholders’ equity	9,994,876	10,072,124
MGP Operating Partnership
ASSETS
Real estate investments, net	9,949,410	10,021,938
Cash and cash equivalents	280,117	259,722	368,298	360,492
Tenant and other receivables, net	2,337	6,385
Prepaid expenses and other assets	33,936	18,487
Above market lease, asset	44,194	44,588
Total assets	10,309,994	10,351,120
Liabilities
Debt, net	3,925,203	3,934,628
Due to MGM Resorts International and affiliates	302	962
Accounts payable, accrued expenses and other liabilities	4,596	10,240
Above market lease, liability	46,847	47,069
Accrued interest	30,515	22,565
Dividend and distribution payable	111,733	111,733
Deferred revenue	129,708	127,640
Deferred income taxes, net	28,544	28,544
Total liabilities	4,277,448	4,283,381
General partner	0	0
Limited partners	6,032,546	6,067,739
Total partners' capital	6,032,546	6,067,739
Total liabilities and shareholders’ equity	10,309,994	10,351,120
MGP Operating Partnership | Reportable Legal Entities
ASSETS
Real estate investments, net	639	488
Cash and cash equivalents	280,117	259,722	368,298	360,492
Tenant and other receivables, net	426	299
Intercompany	1,194,220	1,383,397
Prepaid expenses and other assets	33,936	18,487
Investments in subsidiaries	8,593,646	8,479,388
Above market lease, asset	0	0
Total assets	10,102,984	10,141,781
Liabilities
Debt, net	3,925,203	3,934,628
Due to MGM Resorts International and affiliates	302	962
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	2,685	4,154
Above market lease, liability	0	0
Accrued interest	30,515	22,565
Dividend and distribution payable	111,733	111,733
Deferred revenue	0	0
Deferred income taxes, net	0	0
Total liabilities	4,070,438	4,074,042
General partner	0	0
Limited partners	6,032,546	6,067,739
Total partners' capital	6,032,546	6,067,739
Total liabilities and shareholders’ equity	10,102,984	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