Corporate Investments And Funds Held For Clients (Tables)

12 Months Ended

Jun. 30, 2013

Corporate Investments And Funds Held For Clients [Abstract]

Available-for-sale Securities [Table Text Block]

	June 30, 2013
	Amortized Cost		Gross Unrealized  Gains		Gross Unrealized Losses			Fair Value (A)
Type of issue:
Money market securities and other cash equivalents	$	5,431.2	$	—	$	—		$	5,431.2
Available-for-sale securities:
Corporate bonds	7,868.3		166.2		(56.7		)	7,977.8
U.S. Treasury and direct obligations of U.S. government agencies	5,983.7		152.6		(37.4		)	6,098.9
Asset-backed securities	1,374.1		5.3		(19.7		)	1,359.7
Canadian government obligations and Canadian government agency obligations	998.2		10.7		(4.5		)	1,004.4
Canadian provincial bonds	695.7		20.7		(5.6		)	710.8
Municipal bonds	536.9		16.7		(4.4		)	549.2
Other securities	1,094.4		46.3		(2.8		)	1,137.9
Total available-for-sale securities	18,551.3		418.5		(131.1		)	18,838.7
Total corporate investments and funds held for clients	$	23,982.5	$	418.5	$	(131.1	)	$	24,269.9

 (A) Included within available-for-sale securities are corporate investments with fair values of $342.0 million and funds held for clients with fair values of $18,496.7 million. At June 30, 2013, Level 1 securities included $9.5 million of corporate investments classified within "Other securities," all remaining available-for-sale securities were included in Level 2.

	June 30, 2012
	Amortized  Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value (B)
Type of issue:
Money market securities and other cash equivalents	$	5,111.1	$	—	$	—		$	5,111.1
Available-for-sale securities:
Corporate bonds	7,097.2		272.3		(1.5		)	7,368.0
U.S. Treasury and direct obligations of U.S. government agencies	6,413.8		260.9		(0.1		)	6,674.6
Asset-backed securities	533.9		14.5		—			548.4
Canadian government obligations and Canadian government agency obligations	994.2		23.4		(0.6		)	1,017.0
Canadian provincial bonds	620.8		35.4		(0.3		)	655.9
Municipal bonds	522.0		31.0		(0.1		)	552.9
Other securities	1,201.0		75.7		(0.1		)	1,276.6
Total available-for-sale securities	17,382.9		713.2		(2.7		)	18,093.4
Total corporate investments and funds held for clients	$	22,494.0	$	713.2	$	(2.7	)	$	23,204.5

(B) Included within available-for-sale securities are corporate investments with fair values of $117.3 million and funds held for clients with fair values of $17,976.1 million. At June 30, 2012, Level 1 securities included $20.6 million of corporate investments classified within "Other securities," all remaining available-for-sale securities were included in Level 2.

Classification Of Corporate Investments On The Consolidated Balance Sheets

June 30,	2013		2012
Corporate investments:
Cash and cash equivalents	$	1,699.1	$	1,548.1
Short-term marketable securities	28.0		30.4
Long-term marketable securities	314.0		86.9
Total corporate investments	$	2,041.1	$	1,665.4

Schedule Of Investment Of Funds Held For Clients

June 30,	2013		2012
Funds held for clients:
Restricted cash and cash equivalents held to satisfy client funds obligations	$	3,732.1	$	3,563.0
Restricted short-term marketable securities held to satisfy client funds obligations	1,407.7		2,954.1
Restricted long-term marketable securities held to satisfy client funds obligations	17,089.0		15,022.0
Total funds held for clients	$	22,228.8	$	21,539.1

Available-For-Sale Securities That Have Been In An Unrealized Loss Position

The unrealized losses and fair values of available-for-sale securities that have been in an unrealized loss position for a period of less than and greater than 12 months as of June 30, 2013, are as follows: 

	Unrealized losses less than 12 months			Fair market value less than 12 months		Unrealized losses greater than 12 months		Fair market value greater than 12 months		Total gross unrealized losses			Total fair market value
Corporate bonds	$	(56.7	)	$	2,724.9	$	—	$	—	$	(56.7	)	$	2,724.9
U.S. Treasury and direct obligations of U.S. government agencies	(37.4		)	1,374.6		—		—		(37.4		)	1,374.6
Asset-backed securities	(19.7		)	1,060.1		—		—		(19.7		)	1,060.1
Canadian government obligations and Canadian government agency obligations	(4.5		)	444.7		—		—		(4.5		)	444.7
Canadian provincial bonds	(5.6		)	239.7		—		—		(5.6		)	239.7
Municipal bonds	(4.4		)	188.7		—		—		(4.4		)	188.7
Other securities	(2.8		)	109.3		—		—		(2.8		)	109.3
	$	(131.1	)	$	6,142.0	$	—	$	—	$	(131.1	)	$	6,142.0

The unrealized losses and fair values of available-for-sale securities that have been in an unrealized loss position for a period of less than and greater than 12 months as of June 30, 2012 are as follows: 

	Unrealized losses less than 12 months			Fair market value less than 12 months		Unrealized losses greater than 12 months			Fair market value greater than 12 months		Total gross unrealized losses			Total fair market value
Corporate bonds	$	(1.1	)	$	234.8	$	(0.4	)	$	20.2	$	(1.5	)	$	255.0
U.S. Treasury and direct obligations of U.S. government agencies	(0.1		)	43.6		—			—		(0.1		)	43.6
Asset-backed securities	—			13.6		—			—		—			13.6
Canadian government obligations and Canadian government agency obligations	(0.6		)	209.4		—			—		(0.6		)	209.4
Canadian provincial bonds	(0.3		)	58.5		—			—		(0.3		)	58.5
Municipal bonds	(0.1		)	22.8		—			—		(0.1		)	22.8
Other securities	(0.1		)	26.3		—			—		(0.1		)	26.3
	$	(2.3	)	$	609.0	$	(0.4	)	$	20.2	$	(2.7	)	$	629.2

Expected Maturities Of Available-For-Sale Securities

Due in one year or less	$	1,435.7
Due after one year to two years	3,470.9
Due after two years to three years	4,631.5
Due after three years to four years	3,233.3
Due after four years	6,067.3
Total available-for-sale securities	$	18,838.7