| Schedule of Other Liabilities |
| | | | | | | | | | ($ in millions) | | 2018 | | 2017 | Supplemental pension and other postretirement benefit plan liabilities (Note 16) | | $ | 116 |
| | $ | 153 |
| Long-term portion of workers’ compensation and general liability insurance | | 107 |
| | 121 |
| Deferred developer/tenant allowances | | 144 |
| | 139 |
| Deferred rent liability | | 103 |
| | 97 |
| Interest rate swaps (Notes 6, 9 and 10) | | 15 |
| | — |
| Restructuring and management transition (Note 17) | | 9 |
| | 15 |
| Other | | 64 |
| | 42 |
| Total | | $ | 558 |
| | $ | 567 |
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