($ in millions) | 2013 | 2012 | ||||||
Supplemental pension and other postretirement benefit plan liabilities (Note 15) | $ | 187 | $ | 266 | ||||
Long-term portion of workers’ compensation and general liability insurance | 169 | 167 | ||||||
Deferred developer/tenant allowances | 116 | 128 | ||||||
Primary pension plan (Note 15) | — | 7 | ||||||
Unrecognized tax benefits (Note 18) | 68 | 74 | ||||||
Restructuring and management transition (Note 16) | 4 | 8 | ||||||
Other | 88 | 48 | ||||||
Total | $ | 632 | $ | 698 | ||||