Goodwill And Intangible Assets, Net (Changes In Goodwill) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Mar. 31, 2015
Goodwill [Roll Forward]
Beginning balance	$ 1,887.2
Additions and other adjustments, net	6.8
Currency translation adjustments	(108.5)
Ending balance	1,785.5
Employer Services [Member]
Goodwill [Roll Forward]
Beginning balance	1,882.4	[1]
Additions and other adjustments, net	6.8
Currency translation adjustments	(108.5)
Ending balance	1,780.7	[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

[1] The goodwill balance at June 30, 2014 and March 31, 2015 is net of accumulated impairment losses of $42.7 million related to the Employer Services segment.