Summary of Significant Accounting Policies (Table)

12 Months Ended

Dec. 31, 2014

Summary of Significant Accounting Policies

Schedule of client commission arrangement

        Client commissions allocated for research and related prepaid and accrued research balances for the years ended December 31, 2014, 2013 and 2012 were as follows (dollars in millions):

	2014		2013			2012
Client commissions	$	119.4	$	123.0		$	112.1
Prepaid research, gross	$	4.3	$	4.5		$	5.1
Allowance for prepaid research		—		(0.2	)		(0.4	)
Prepaid research, net of allowance	$	4.3	$	4.3		$	4.7
Accrued research payable	$	56.7	$	52.0		$	38.6