Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule other liabilities
Income tax liabilities	$ 600,902	$ 634,790
Tenant security deposits	174,100	158,544
Unearned rents	111,978	115,093
Lease intangible assets	68,794	68,256
Deferred income	48,198	52,045
Environmental	37,353	40,206
Value added tax and other tax liabilities	24,816	42,895
Other	127,338	113,719
Totals	$ 1,193,479	$ 1,225,548