Accumulated Other Comprehensive Income (Loss)-Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ (352.7)		$ (305.7)
Other comprehensive income/(loss) before reclassifications	25.6		(22.9)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.8		2.3
Net current period other comprehensive income (loss)	26.4	$ (15.3)	(20.6)	$ (80.9)
Ending Balance	(326.3)		(326.3)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(312.6)		(248.8)
Other comprehensive income/(loss) before reclassifications	24.6		(39.2)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0		0.0
Net current period other comprehensive income (loss)	24.6		(39.2)
Ending Balance	(288.0)		(288.0)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(55.4)		(56.9)
Other comprehensive income/(loss) before reclassifications	0.0		0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.8		2.3
Net current period other comprehensive income (loss)	0.8		2.3
Ending Balance	(54.6)		(54.6)
Available-for-sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	15.3		0.0
Other comprehensive income/(loss) before reclassifications	1.0		16.3
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0		0.0
Net current period other comprehensive income (loss)	1.0		16.3
Ending Balance	$ 16.3		$ 16.3