Investments in Marketable Debt Securities (Tables)

6 Months Ended

Jun. 30, 2014

Marketable Debt Securities

Marketable debt securities at June 30, 2014 and December 31, 2013 consisted of the following:

At June 30, 2014	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
U.S. tax-exempt securities	$	328.8	$	1.5			$	330.3
U.S. corporate securities		60.0		.2				60.2
U.S. government and agency securities		5.5		.1				5.6
Non-U.S. corporate securities		647.4		3.4	$	.1		650.7
Non-U.S. government securities		200.4		1.5		.4		201.5
Other debt securities		86.6		.1				86.7
	$	1,328.7	$	6.8	$	.5	$	1,335.0
At December 31, 2013	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
U.S. tax-exempt securities	$	214.9	$	1.2			$	216.1
U.S. corporate securities		78.2		.1	$	.1		78.2
U.S. government and agency securities		5.5						5.5
Non-U.S. corporate securities		608.5		1.2		.4		609.3
Non-U.S. government securities		217.3		.7		.5		217.5
Other debt securities		140.5		.4				140.9
	$	1,264.9	$	3.6	$	1.0	$	1,267.5

Marketable Debt Securities Continuous Unrealized Losses

Marketable debt securities with continuous unrealized losses and their related fair values were as follows:

	June 30, 2014				December 31, 2013
	Less than Twelve Months		Twelve Months or Greater		Less than Twelve Months		Twelve Months or Greater
Fair value	$	134.0	$	15.9	$	388.3	$	28.4
Unrealized losses		.3		.2		.9		.1

Contractual Maturities of Debt Securities

Contractual maturities on marketable debt securities at June 30, 2014 were as follows:

Maturities:	Amortized Cost		Fair Value
Within one year	$	448.0	$	448.5
One to five years		880.3		886.1
More than ten years		.4		.4
	$	1,328.7	$	1,335.0