Goodwill and Other Intangibles (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Roll Forward]
Balance - beginning of period	$ 329,132	$ 63,607	$ 63,607
Goodwill		268,683	0
Allocation of goodwill to properties sold within the reporting unit	(13,118)	(3,158)
Prior Period Reclassification Adjustment	32,715
Adjustments	1,479
Balance - end of period	350,208	329,132	63,607
Real Estate Ownership
Goodwill [Roll Forward]
Balance - beginning of period	265,525	0	0
Goodwill		268,683	0
Allocation of goodwill to properties sold within the reporting unit	(13,118)	(3,158)
Prior Period Reclassification Adjustment	32,715
Adjustments	1,479
Balance - end of period	286,601	265,525	0
Investment Management
Goodwill [Roll Forward]
Balance - beginning of period	63,607	63,607	63,607
Goodwill		0	0
Allocation of goodwill to properties sold within the reporting unit	0	0
Prior Period Reclassification Adjustment	0
Adjustments	0
Balance - end of period	$ 63,607	$ 63,607	$ 63,607