Subsequent Events - Additional Information (Detail) | Apr. 25, 2016USD ($)Terms$ / sharesshares | Apr. 20, 2016USD ($) | Apr. 19, 2016 | May. 31, 2016USD ($)$ / shares | Mar. 31, 2016USD ($) | Jun. 03, 2016USD ($) |
Subsequent Event [Line Items] | | | | | | |
Debt issuance and initial public offering costs | | | | | $ 10,000,000 | |
Common stock, conversion basis | | | | | The ownership units of the Operating Partnership are exchangeable into Class A shares of MGP on a one-to-one basis, or cash at the fair value of a Class A share, at the option of MGP. | |
Leasing arrangement description of rent | | | | | The base rent includes a fixed annual rent escalator of 2.0% for the second through the sixth lease years (as defined in the master lease). Thereafter, the annual escalator of 2.0% will be subject to the Tenant and, without duplication, the operating subsidiary sublessees of the Tenant, collectively meeting an adjusted net revenue to rent ratio of 6.251.00 based on their net revenue from the leased properties subject to the master lease (as determined in accordance with U.S. GAAP, adjusted to exclude net revenue attributable to certain scheduled subleases and, at MGM's option, reimbursed cost revenue). The percentage rent will initially be a fixed amount for approximately the first six years and will then be adjusted every five years based on the average actual annual net revenues of the Tenant and, without duplication, the operating subsidiary sublessees of the Tenant, from the leased properties subject to the master lease at such time for the trailing five calendar-year period (calculated by multiplying the average annual net revenues, excluding net revenue attributable to certain scheduled subleases and, at MGP's option, reimbursed cost revenue, for the trailing five calendar-year period by 1.4%). | |
Bridge Facilities [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Credit facility amount | | | | | $ 4,000,000,000 | |
Scenario, Forecast [Member] | MGP Operating Partnership Credit Agreement [Member] | Revolving Credit Facility [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Amount drawn under credit facility | | | | | | $ 0 |
Subsequent Events [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Ownership interest in operating partnership | 73.30% | | | | | |
Ownership interest transferred | 100.00% | | | | | |
Master lease, initial lease term | 10 years | | | | | |
Additional period of extension in lease contract | 5 years | | | | | |
Number of times lease term, extended | Terms | 4 | | | | | |
Annual rent payments due under master lease | $ 550,000,000 | | | | | |
Subsequent Events [Member] | Borgata Hotel Casino and Spa [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Business combination, total consideration | | | | $ 1,175,000,000 | | |
Business combination, price per share | $ / shares | | | | $ 23.03 | | |
Pro forma net leverage ratio | | | | 550.00% | | |
Increase in lease rent expenses | | | | $ 100,000,000 | | |
Subsequent Events [Member] | 2016 MGP Omnibus Incentive Plan [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Stock incentive plan expiration period | | | 10 years | | | |
Subsequent Events [Member] | Base Rent [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Percentage of initial total rent payments due under the master lease | 90.00% | | | | | |
Total revised annual rent payments due under master lease | $ 495,000,000 | | | | | |
Fixed annual rent escalator, percentage | 2.00% | | | | | |
Lease contractual term | 6 years | | | | | |
Adjusted net revenue to rent ratio | 625.00% | | | | | |
Subsequent Events [Member] | Base Rent [Member] | Borgata Hotel Casino and Spa [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Total revised annual rent payments due under master lease | | | | 585,000,000 | | |
Increase in lease rent expenses | | | | 90,000,000 | | |
Subsequent Events [Member] | Percentage Rent [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Percentage of initial total rent payments due under the master lease | 10.00% | | | | | |
Total revised annual rent payments due under master lease | $ 55,000,000 | | | | | |
Lease fixed amount adjustment multiplier | 1.40% | | | | | |
Subsequent Events [Member] | Percentage Rent [Member] | Borgata Hotel Casino and Spa [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Total revised annual rent payments due under master lease | | | | 65,000,000 | | |
Increase in lease rent expenses | | | | 10,000,000 | | |
Subsequent Events [Member] | Propco [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Ownership interest transferred | 100.00% | | | | | |
Subsequent Events [Member] | Minimum [Member] | Borgata Hotel Casino and Spa [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Business combination, liabilities assumed | | | | 525,000,000 | | |
Subsequent Events [Member] | Maximum [Member] | Borgata Hotel Casino and Spa [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Business combination, liabilities assumed | | | | $ 570,000,000 | | |
Subsequent Events [Member] | MGP Operating Partnership Credit Agreement [Member] | Revolving Credit Facility [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Credit facility amount | $ 600,000,000 | | | | | |
Variable interest rate base | LIBOR | | | | | |
Subsequent Events [Member] | MGP Operating Partnership Credit Agreement [Member] | Term Loan A [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Credit facility amount | $ 300,000,000 | | | | | |
Credit facility, maturity date | 2,021 | | | | | |
Variable interest rate base | LIBOR | | | | | |
Term loan repayment percentage of initial aggregate principal amount | 5.00% | | | | | |
Subsequent Events [Member] | MGP Operating Partnership Credit Agreement [Member] | Term Loan B [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Credit facility amount | $ 1,850,000,000 | | | | | |
Percentage of credit facility issued to lenders | 99.75% | | | | | |
LIBOR floor rate | 0.75% | | | | | |
Credit facility, maturity date | 2,023 | | | | | |
Variable interest rate base | LIBOR | | | | | |
Term loan repayment percentage of initial aggregate principal amount | 1.00% | | | | | |
Subsequent Events [Member] | MGP Operating Partnership Credit Agreement [Member] | LIBOR [Member] | Term Loan A [Member] | First Six Months [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Variable margin | 2.75% | | | | | |
Subsequent Events [Member] | MGP Operating Partnership Credit Agreement [Member] | LIBOR [Member] | Term Loan A [Member] | Minimum [Member] | After Six Months [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Variable margin | 2.25% | | | | | |
Subsequent Events [Member] | MGP Operating Partnership Credit Agreement [Member] | LIBOR [Member] | Term Loan A [Member] | Maximum [Member] | Amended and Restated Senior Credit Facility [Member] | After Six Months [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Variable margin | 2.75% | | | | | |
Subsequent Events [Member] | MGP Operating Partnership Credit Agreement [Member] | LIBOR [Member] | Term Loan B [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Variable margin | 3.25% | | | | | |
Subsequent Events [Member] | MGP Operating Partnership Senior Notes [Member] | 5.625% Senior Notes due 2024 [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Aggregate principal amount of senior notes | | $ 1,050,000,000 | | | | |
Interest rate on senior notes | | 5.625% | | | | |
Maturity date of senior notes | | May 1, 2024 | | | | |
Interest on notes payable commencement date | | Nov. 1, 2016 | | | | |
Debt instrument redemption price percentage | | 100.00% | | | | |
Subsequent Events [Member] | IPO [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Initial offering price per share | $ / shares | $ 21 | | | | | |
Ownership percentage acquired | 26.70% | | | | | |
Debt issuance and initial public offering costs | $ 10,000,000 | | | | | |
Subsequent Events [Member] | IPO [Member] | Class A Shares [Member] | | | | | | |
Subsequent Event [Line Items] | | | | | | |
Shares issued under initial public offering | shares | 57,500,000 | | | | | |
Shares offered to underwriters under initial public offering | shares | 7,500,000 | | | | | |