Investments in Marketable Debt Securities (Tables)

9 Months Ended

Sep. 30, 2013

Marketable Debt Securities

Marketable debt securities at September 30, 2013 and December 31, 2012 consisted of the following:

	Amortized		Unrealized		Unrealized		Fair
At September 30, 2013	Cost		Gains		Losses		Value
U.S. tax-exempt securities	$	205.4	$	1.1	$	.1	$	206.4
U.S. corporate securities		79.6		.1				79.7
U.S. government and agency securities		.6						.6
Non-U.S. corporate securities		564.6		1.4		.4		565.6
Non-U.S. government securities		243.6		1.1		.2		244.5
Other debt securities		103.8		.5				104.3
	$	1,197.6	$	4.2	$	.7	$	1,201.1
	Amortized		Unrealized		Unrealized		Fair
At December 31, 2012	Cost		Gains		Losses		Value
U.S. tax-exempt securities	$	217.2	$	1.5	$	.1	$	218.6
U.S. corporate securities		59.8		.3				60.1
U.S. government and agency securities		.8						.8
Non-U.S. corporate securities		447.5		1.4		.2		448.7
Non-U.S. government securities		349.3		5.8		.1		355.0
Other debt securities		108.9		.6				109.5
	$	1,183.5	$	9.6	$	.4	$	1,192.7

Contractual Maturities of Marketable Debt Securities

Contractual maturities on marketable debt securities at September 30, 2013 were as follows:

	Amortized		Fair
Maturities:	Cost		Value
Within one year	$	530.0	$	531.1
One to five years		667.1		669.5
Six to ten years		.1		.1
More than ten years		.4		.4
	$	1,197.6	$	1,201.1