Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Consolidated Statement of Comprehensive Income [Abstract]
Net earnings	$ 643.1	$ 587.9	$ 1,512.1	$ 1,467.6
Other comprehensive income/loss:
Currency translation adjustments	21.1	20.3	67.7	(23.9)
Unrealized net (losses)/gains on available-for-sale securities	(240.4)	46.3	(400.6)	(438.3)
Tax effect	53.4	(16.5)	109.9	155.1
Reclassification of net losses/(gains) on available-for-sale securities to net earnings	0.2	0.2	1.3	(1.1)
Tax effect	0.1	(0.1)	(0.2)	0.3
Reclassification of pension liability adjustment to net earnings	2.3	5.1	6.9	15.3
Tax effect	(0.6)	(1.8)	(2.3)	(5.5)
Other comprehensive (loss)/income, net of tax	(163.9)	53.5	(217.3)	(298.1)
Comprehensive income	$ 479.2	$ 641.4	$ 1,294.8	$ 1,169.5