| In millions, except per share items | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Cash flows from operating activities | | | | | | | | |
| Net income | 360.3 | 359.2 | 363.5 | 377.8 | 401.1 | 160.4 | 142.0 | 113.1 |
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| Adjustments to reconcile net income to net cash from operating activities: | | | | | | | | |
| Depreciation | 240.4 | 235.5 | 231.5 | 232.1 | 232.7 | 236.9 | 250.3 | 264.1 |
| Straight-line rental revenues, excluding amortization of lease incentive asset | 70.8 | 66.3 | 62.0 | 58.3 | 54.5 | 51.7 | 49.7 | 47.7 |
| Share-based compensation | 4.5 | 4.8 | 3.1 | 3.1 | 3.0 | 2.9 | 2.7 | 2.5 |
| Change in operating assets and liabilities: | | | | | | | | |
| Prepaid expenses and other assets | 16.0 | -1.2 | 4.4 | 2.2 | 2.5 | 0.4 | -3.8 | -1.5 |
| Due to/from MGM Resorts International and affiliates | -0.8 | -0.1 | -0.5 | -0.1 | -1.0 | -0.5 | 0.0 | 0.3 |
| Accounts payable, accrued expenses and other liabilities | -16.0 | -10.9 | -15.1 | -15.0 | -5.9 | -3.3 | 2.8 | -5.1 |
| Accrued interest | -7.9 | 7.2 | 1.3 | 16.4 | 22.1 | 5.6 | 13.3 | 1.9 |
| Net cash provided by operating activities | 701.3 | 679.0 | 665.7 | 683.8 | 695.9 | 703.7 | 720.4 | 702.7 |
| |
| Cash flows from investing activities | | | | | | | | |
| Net Cash Provided by (Used in) Investing Activities | | -400.0 | | | | | | 58.6 |
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| Cash flows from financing activities | | | | | | | | |
| Net repayments under bank credit facility | -50.0 | -9.5 | | 1,484.3 | -9.5 | 0.0 | -1,603.8 | -1,503.8 |
| Proceeds from issuance of Class A shares, net | | | 792.9 | 792.6 | 676.0 | | | |
| Dividends and distributions paid | -549.2 | -544.9 | -553.5 | -563.4 | -590.9 | -601.7 | -592.5 | -581.2 |
| Net cash used in financing activities | -436.9 | -897.3 | -1,001.3 | -1,111.5 | -2,315.8 | -338.0 | -277.4 | -88.9 |
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| Cash and cash equivalents | | | | | | | | |
| Balance, beginning of period | 8.1 | | | | | | | 1,816.2 |
| Balance, end of period | 184.0 | | 319.6 | 298.2 | -1,619.4 | | | 100.0 |
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| Supplemental cash flow disclosures | | | | | | | | |
| Interest paid | 234.8 | 225.1 | 232.1 | 215.0 | 201.7 | 203.2 | 194.6 | 211.7 |
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| Non-cash investing and financing activities | | | | | | | | |