XML 40 R31.htm IDEA: XBRL DOCUMENT

Cash and Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2016

The components of our investments as of December 31, 2016 are as follows (in millions):



	Cash & Cash Equivalents		Restricted Cash		Restricted Marketable Securities		Total
Cash	$	40.5	$	60.9	$	—	$	101.4
Equity securities	—		—		57.7		57.7
Total	$	40.5	$	60.9	$	57.7	$	159.1

The components of our investments as of December 31, 2015 are as follows (in millions):



	Cash & Cash Equivalents		Restricted Cash		Restricted Marketable Securities		Total
Cash	$	61.6	$	45.9	$	—	$	107.5
Equity securities	—		—		56.2		56.2
Total	$	61.6	$	45.9	$	56.2	$	163.7

As of December 31, 2016 and 2015, Restricted cash consisted of the following (in millions):

A summary of our restricted marketable securities as of December 31, 2015 is as follows (in millions):

A summary of our restricted marketable securities as of December 31, 2016 is as follows (in millions):

Investing information related to our restricted marketable securities is as follows (in millions):



	For the Year Ended December 31,
	2016		2015		2014
Proceeds from sales of restricted available-for-sale securities	$	—	$	—	$	—
Proceeds from sales of nonrestricted available-for-sale securities	$	—	$	12.8	$	2.7
Gross realized gains	$	—	$	1.2	$	0.5
Gross realized losses	$	—	$	—	$	(0.1	)