Commitments to Acquire/Dispose of Real Estate (Details) $ in Thousands	Oct. 30, 2015 USD ($) property
Starwood Portfolio [Member]
Commitments to Dispose of Real Estate
Properties Disposed - Total | property	72
Rental Units Disposed-Total	23,262
Sales Price For Commitments To Dispose	$ 5,365,000
Commitments [Member]
Commitments to Acquire Real Estate
Properties Acquired-Total | property	0
Rental Units Acquired - Total	2
Purchase Price - Total	$ 6,000
Commitments to Dispose of Real Estate
Properties Disposed - Total | property	77
Rental Units Disposed-Total	23,961
Sales Price For Commitments To Dispose	$ 5,860,103
Commitments [Member] | Rental Properties Disposed of [Member]
Commitments to Dispose of Real Estate
Properties Disposed - Total | property	77
Rental Units Disposed-Total	23,961
Sales Price For Commitments To Dispose	$ 5,830,203
Commitments [Member] | Land [Member]
Commitments to Dispose of Real Estate
Sales Price For Commitments To Dispose	$ 29,900
Land Parcels Contracted To Be Disposed	3
Commitments [Member] | Consolidated Rental Properties [Member]
Commitments to Acquire Real Estate
Purchase Price - Total	$ 6,000