Investments (Tables)

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Investments are as follows (in millions):



	Carrying Value
	September 30, 2014		December 31, 2013
Available-for-sale securities:
State Street Corporation	$	417.2	$	515.5
Other available-for-sale securities	126.5		138.5
	543.7		654.0
Other:
Trading securities	28.6		44.3
Cost method and other investments	160.7		183.0
	189.3		227.3
Total investments	$	733.0	$	881.3

Schedule of reconciliation of available-for-sale securities from book cost basis to market value

Certain information related to the Company’s available-for-sale securities is as follows (in millions):



	September 30, 2014			December 31, 2013
Book cost basis	$	153.2		$	166.9
Gross unrealized gains	392.5			487.5
Gross unrealized losses	(2.0		)	(0.4		)
Market value	$	543.7		$	654.0

Schedule of fair value and gross unrealized losses of investments by length of time in a continuous loss position

The following table summarizes the fair value and gross unrealized losses of the Company’s investments by the length of time that the securities have been in a continuous loss position at September 30, 2014 and December 31, 2013 (in millions):



	Less than 12 months				Greater than 12 months				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
September 30, 2014
Common stock	$	25.3	$	2.0	$	—	$	—	$	25.3	$	2.0

December 31, 2013
Common stock	$	5.9	$	0.4	$	—	$	—	$	5.9	$	0.4