Other Liabilities - Summary of Other Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Other Liabilities Disclosure [Abstract]
Deferred gains on asset sales	$ 904	$ 944
SPG point liability	722	733
Deferred revenue including VOIs and residential sales	33	33
Benefit plan liabilities	72	78
Deferred rent	49	51
Insurance reserves	44	45
Other	75	72
Other liabilities	$ 1,899	$ 1,956