Individually Significant Dispositions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
REVENUES
Rental income	$ 605,856	$ 694,245	$ 1,816,960	$ 2,035,359
Total revenues	606,074	696,289	1,820,311	2,041,772
EXPENSES (1)
Cost of Property Repairs and Maintenance	104,216	122,383	309,688	364,948
Real Estate Taxes and Insurance	81,343	84,962	238,954	254,513
Property management	19,517	20,094	64,003	64,651
General and administrative	12,395	15,197	47,408	50,618
Depreciation	179,230	196,059	528,242	584,862
Total expenses	396,701	438,695	1,188,295	1,319,592
Operating income	209,373	257,594	632,016	722,180
Interest and other income	5,509	256	65,092	6,906
INTEREST (2)
Expense incurred, net	(86,352)	(114,298)	(386,316)	(333,946)
Amortization of deferred financing costs	(2,261)	(2,607)	(10,000)	(7,734)
Income and other tax (expense) benefit	(426)	(329)	(1,189)	(698)
Net gain on sales of real estate properties	90,036	66,939	3,870,871	295,692
Net income attributable to Noncontrolling Interests	(8,353)	(7,778)	(160,442)	(26,191)
Net income attributable to controlling interests	208,316	196,692	$ 4,014,913	$ 665,634
Starwood Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of consolidated NOI			1.60%	15.70%
REVENUES
Rental income	239	108,435	$ 30,660	$ 318,346
Total revenues	239	108,435	30,660	318,346
EXPENSES (1)
Cost of Property Repairs and Maintenance	(84)	20,437	7,839	59,139
Real Estate Taxes and Insurance	1	12,668	2,933	37,292
Property management	0	3	2	9
General and administrative	4	6	19	31
Depreciation	0	26,360	0	78,792
Total expenses	(79)	59,474	10,793	175,263
Operating income	318	48,961	19,867	143,083
Interest and other income	10	1	21	1
INTEREST (2)
Expense incurred, net	(6)	(177)	(380)	(519)
Amortization of deferred financing costs	0	(25)	(707)	(74)
Income and other tax (expense) benefit	0	0	(1)	(1)
Net gain on sales of real estate properties	(103)	0	3,161,097	0
Net Income (Loss) Allocated to General Partners	219	48,760	3,179,897	142,490
Net income attributable to Noncontrolling Interests	(8)	(1,863)	(122,146)	(5,437)
Net income attributable to controlling interests	$ 211	$ 46,897	$ 3,057,751	$ 137,053