Basis of Presentation and Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax benefit (expense)	$ 3,096	$ (26,206)	$ 1,942	$ 12,617
Gain on dispositions of real estate and the Asset Management business	$ 1,146	626,232	$ 356,929	679,738
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax benefit (expense)		27,941		69,724
Gain on dispositions of real estate and the Asset Management business		572,085		622,631
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax benefit (expense)		(54,147)		(57,107)
Gain on dispositions of real estate and the Asset Management business		$ 54,147		$ 57,107