Other Liabilities - Summary of Other Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Deferred gains on asset sales	$ 1,298	$ 1,329
SPG point liability	852	830
Deferred revenue	37	42
Benefit plan liabilities	44	45
Deferred rent	26	27
Insurance reserves	47	47
Other	62	69
Other liabilities	$ 2,366	$ 2,389