Non-Cash Activities (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Nonmonetary Transactions [Abstract]
Expenditures Included In Construction Trade Payables	$ 10.5	$ 19.3

Expenditures Included In Construction Trade Payables

No definition available.

Name:	skt_ExpendituresIncludedInConstructionTradePayables
Namespace Prefix:	skt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant