Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Consolidated Statement of Comprehensive Income [Abstract]
Net earnings	$ 401.5	$ 368.7
Other comprehensive income/loss:
Currency translation adjustments	42.5	10.8
Unrealized net losses on available-for-sale securities	(12.8)	(71.4)
Tax effect	3.5	26.2
Reclassification of net gains on available-for-sale securities to net earnings	0.0	(0.1)
Tax effect	0.0	0.0
Reclassification of pension liability adjustment to net earnings	2.3	5.1
Tax effect	(0.9)	(1.9)
Other comprehensive income/(loss), net of tax	34.6	(31.3)
Comprehensive income	$ 436.1	$ 337.4