Leasing Arrangements - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jan. 01, 2019 |
Dec. 31, 2018 |
|
| Leases Disclosure [Line Items] | ||||||
| Weighted average remaining lease term | 20 years | 20 years | ||||
| Lease Term | 20 years | |||||
| Percent rents in excess of minimum rents | $ 68.4 | $ 75.0 | $ 130.5 | $ 144.7 | ||
| Lease right-of-use asset, net | $ 12,522.8 | $ 12,522.8 | $ 12,500.0 | $ 0.0 | ||
| Weighted Average Discount Rate, Percent | 4.00% | 4.00% | ||||
| Minimum [Member] | ||||||
| Leases Disclosure [Line Items] | ||||||
| Escalation Timing | 1 year | |||||
| Maximum [Member] | ||||||
| Leases Disclosure [Line Items] | ||||||
| Escalation Timing | 5 years | |||||