Goodwill And Intangible Assets, Net (Changes In Goodwill) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Dec. 31, 2013
Goodwill [Roll Forward]
Beginning balance	$ 3,052.6	[1]
Additions and other adjustments, net	22.0
Currency translation adjustments	34.0
Ending balance	3,108.6	[1]
Employer Services [Member]
Goodwill [Roll Forward]
Beginning balance	1,878.8	[1]
Additions and other adjustments, net	(0.4)
Currency translation adjustments	13.6
Ending balance	1,892.0	[1]
PEO Services [Member]
Goodwill [Roll Forward]
Beginning balance	4.8
Additions and other adjustments, net	0
Currency translation adjustments	0
Ending balance	4.8
Dealer Services [Member]
Goodwill [Roll Forward]
Beginning balance	1,169.0
Additions and other adjustments, net	22.4
Currency translation adjustments	20.4
Ending balance	$ 1,211.8

[1] The goodwill balance at June 30, 2013 and December 31, 2013 is net of accumulated impairment losses of $42.7 million related to the Employer Services segment.