Investment (Table)

12 Months Ended

Dec. 31, 2017

Investments [Abstract]

Schedule of Investments, Amortized Cost Basis

The following table sets forth selected data with respect to the Company’s investments at December 31, (in millions):

	2017											2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Carrying Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Carrying Value
Available-for-sale securities	$	59.3	$	0.1	$	(1.0	)	$	58.4	$	58.4	$	58.6	$	0.3	$	(1.5	)	$	57.4	$	57.4
Trading securities	8.9		4.9		—			13.8		13.8		7.1		3.1		—			10.2		10.2
TOTAL INVESTMENTS	$	68.2	$	5.0	$	(1.0	)	$	72.2	$	72.2	$	65.7	$	3.4	$	(1.5	)	$	67.6	$	67.6

Schedule of Contractual Maturities of Available-For-Sale Investments

Contractual maturities of our investments in available-for-sale securities at December 31, 2017 were as follows (in millions):

	Amortized Cost		Fair Value
Available-for-sale securities
Due within 1 year	$	14.5	$	14.5
After 1 year but within 5 years	31.5		30.7
After 5 years but within 10 years	10.9		10.8
Due after 10 years	2.4		2.4
TOTAL	$	59.3	$	58.4