New Accounting Pronouncements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Item Effected [Line Items]
Income tax expense (benefit)	$ 240.0	$ 262.3	$ 675.1	$ 596.3
Net cash flows provided by operating activities			1,668.7	1,234.4
Net cash flows (used in) / provided by financing activities			(986.5)	16,332.6
Accounting Standards Update 2016-09 | New Accounting Principles, Early Adoption
Item Effected [Line Items]
Income tax expense (benefit)	$ (9.5)		$ (29.9)
Net cash flows provided by operating activities				33.6
Net cash flows (used in) / provided by financing activities				$ 33.6