Business Segment Information and Geographic Data (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Schedule of Operating Income (Loss) by Segment

	Years Ended December 31,
	2019			2018
	(In millions)
Operating income (loss) from continuing operations
Asset management business		0.1			(3.6	)
Sports investment platform		(0.2	)		(3.6	)
Total segment operating loss		(0.1	)		(3.6	)
Corporate and unallocated		(3.2	)		(3.3	)
Intangible impairment		—			(6.2	)
Restructuring and other		(0.1	)		4.8
Total operating loss		(3.4	)		(8.3	)
Interest expense		(0.3	)		(0.1	)
Net income (loss) from AAM fund activities		—			(0.9	)
Other income (expense), net		15.1			(0.5	)
Income (loss) from continuing operations before income taxes	$	11.4		$	(8.8	)