Acquisitions (Details) $ in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2018 USD ($)	Oct. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2016 USD ($)
Business Acquisition [Line Items]
Acquisition Price			$ 90.0
Number of Businesses Acquired			2
Contingent Consideration, Liability			$ 12.0
Contingent Consideration, Term of Payments			2 years
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill			$ 1,741.0	$ 2,243.5	$ 1,682.0
Global Cash Card, Inc. [Member]
Business Acquisition [Line Items]
Date of Acquisition Agreement		Oct. 05, 2017
Percentage of shares acquired		100.00%
Acquisition Price		$ 490.0
Weighted Average Useful Life		8 years
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill		$ 406.1
Identifiable intangible assets		132.5
Other assets		0.8
Total assets acquired		539.4
Total liabilities assumed		$ 48.4
Word Market, Inc. [Member]
Business Acquisition [Line Items]
Date of Acquisition Agreement	Jan. 19, 2018
Percentage of shares acquired	100.00%
Acquisition Price	$ 125.0