Condensed Consolidated Statements of Partners' Capital - USD ($) $ in Thousands	Total	MGP Operating Partnership	MGP Operating Partnership General Partner	MGP Operating Partnership Limited Partners	Empire City MGP Operating Partnership	Empire City MGP Operating Partnership Limited Partners	Park MGM Lease Transaction MGP Operating Partnership	Park MGM Lease Transaction MGP Operating Partnership Limited Partners
Balance at Dec. 31, 2017		$ 6,067,739	$ 0	$ 6,067,739
Changes in partners' capital:
Net income	$ 58,169	58,169		58,169
Deemed contribution - tax sharing agreement	1,231	1,231		1,231
Dividends and distributions declared ($0.4650 per Class A share)	(111,733)	(111,733)		(111,733)
Share-based compensation	384	384		384
Other comprehensive income - cash flow hedges	16,355	16,355		16,355
Other		401		401
Balance at Mar. 31, 2018		6,032,546	0	6,032,546
Balance at Dec. 31, 2017		6,067,739	0	6,067,739
Changes in partners' capital:
Net income	106,228	106,228
Other comprehensive income - cash flow hedges	22,636
Balance at Jun. 30, 2018		5,974,303	0	5,974,303
Balance at Mar. 31, 2018		6,032,546	0	6,032,546
Changes in partners' capital:
Net income	48,059	48,059		48,059
Deemed contribution - tax sharing agreement	1,263	1,263		1,263
Dividends and distributions declared ($0.4650 per Class A share)	(114,399)	(114,399)		(114,399)
Share-based compensation	556	556		556
Other comprehensive income - cash flow hedges	6,281	6,281		6,281
Other		(3)		(3)
Balance at Jun. 30, 2018		5,974,303	0	5,974,303
Balance at Dec. 31, 2018		5,845,506	0	5,845,506
Changes in partners' capital:
Net income	66,364	66,364		66,364
Deemed contribution - tax sharing agreement	1,345	1,345		1,345
Dividends and distributions declared ($0.4650 per Class A share)	(139,279)	(139,279)		(139,279)
Issuance of Class A shares	548,391
Issuance of Operating Partnership units		548,391		548,391
Acquisitions					$ 379,050	$ 379,050	$ 31,875	$ 31,875
Share-based compensation	565	565		565
Other comprehensive income - cash flow hedges	(15,612)	(15,612)		(15,612)
Other		(1,288)		(1,288)
Balance at Mar. 31, 2019		6,716,917	0	6,716,917
Balance at Dec. 31, 2018		5,845,506	0	5,845,506
Changes in partners' capital:
Net income	134,133	134,133
Other comprehensive income - cash flow hedges	(46,387)
Balance at Jun. 30, 2019		6,386,532	0	6,386,532
Balance at Mar. 31, 2019		6,716,917	0	6,716,917
Changes in partners' capital:
Net income	67,769	67,769		67,769
Deemed contribution - tax sharing agreement	2,275	2,275		2,275
Dividends and distributions declared ($0.4650 per Class A share)	(136,671)	(136,671)		(136,671)
Issuance of Class A shares	64,908	64,908		64,908
Northfield OpCo Transaction		(298,957)		(298,957)
Share-based compensation	524	524		524
Other comprehensive income - cash flow hedges	$ (30,775)	(30,775)		(30,775)
Other		542		542
Balance at Jun. 30, 2019		$ 6,386,532	$ 0	$ 6,386,532