Accounts Payable and Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Accounts Payable and Accrued Liabilities [Abstract]
Brokerage payables	$ 109,842	$ 107,632
Accounts payable and other liabilities	80,701	70,006
Total	$ 190,543	$ 177,638