Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Shareholders’ equity
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	70,911,166	70,896,795
Common stock, shares outstanding (in shares)	70,911,166	70,896,795
MGP Operating Partnership
Partners' capital
Partners' capital, units issued (in shares)	266,045,289	266,030,918
Partners' capital, units outstanding (in shares)	266,045,289	266,030,918