($ in millions)

2011

2010

Supplemental pension and other postretirement benefit plan liabilities (Note 16)

$           285

$           206

Long-term portion of workers' compensation and general liability insurance

             168

             177

Deferred developer/tenant allowances

             135

             135

Primary pension plan (Note 16)

             121

                  -

Unrecognized tax benefits (Note 19)

               85

             101

Restructuring and management transition (Note 17)

                 8

               -

Other

               97

               51

Total

$          899

$          670