Fair Value Measurements (Tables)

12 Months Ended

Jun. 30, 2011

Jun. 30, 2010

Fair Value Measurements

Schedule Of Assets Measured At Fair Value On A Recurring Basis

	Level 1	Level 2	Level 3	Total
U.S Treasury and direct obligations of
U.S. government agencies	$            -	$          6,759.1	$               -	$         6,759.1
Corporate bonds	-	6,126.6	-	6,126.6
Asset-backed securities	-	447.8	-	447.8
Commercial mortgage-backed securities	-	492.5	-	492.5
Municipal bonds	-	516.2	-	516.2
Canadian government obligations and
Canadian government agency obligations	-	1,101.5	-	1,101.5
Other securities	20.1	1,463.7	-	1,483.8
Total available-for-sale securities	$         20.1	$        16,907.4	$               -	$       16,927.5

	Level 1	Level 2	Level 3	Total
U.S Treasury and direct obligations of
U.S. government agencies	$            -	$          5,911.4	$               -	$         5,911.4
Corporate bonds	-	5,332.9	-	5,332.9
Asset-backed securities	-	968.9	-	968.9
Commercial mortgage-backed securities	-	707.4	-	707.4
Municipal bonds	-	469.5	-	469.5
Canadian government obligations and	-
Canadian government agency obligations	-	1,032.5	-	1,032.5
Other securities	8.0	1,086.4	-	1,094.4
Total available-for-sale securities	$           8.0	$        15,509.0	$               -	$       15,517.0