Unconsolidated Affiliates and Cost Method Investments (Cost Method Investments) (Details) (Jinsheng [Member])	12 Months Ended
Dec. 31, 2013 Malls
Jinsheng [Member]
Cost Method Investments [Abstract]
Percentage of ownership interest in Jinsheng (in hundredths)	6.20%
Number of malls owned by subsidiary	8
Number of series 2 ordinary shares secured against convertible security notes	16,565,534
Noncontrolling interest, increase in ownership percentage	2.275%

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant