Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received.

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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Short term investments	$ 35.7		$ 35.7		$ 0.0
Short term investment (income) loss	1.5	$ 0.0	0.3	$ 0.0
Other (income) expense
Schedule of Available-for-sale Securities [Line Items]
Accrued fees	0.4		0.4
Clinton Group
Schedule of Available-for-sale Securities [Line Items]
Short term investments	$ 35.1		$ 35.1