Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statement of Comprehensive Income [Abstract]
Net earnings	$ 558.2	$ 670.4	$ 1,063.6	$ 1,083.0
Other comprehensive income/loss:
Currency translation adjustments	(24.7)	2.2	(47.6)	55.0
Unrealized net gains/(losses) on available-for-sale securities	168.3	(147.3)	118.0	(160.2)
Tax effect	(38.8)	53.1	(26.6)	56.6
Reclassification of net losses on available-for-sale securities to net earnings	0.5	1.0	1.4	1.1
Tax effect	(0.1)	(0.4)	(0.3)	(0.4)
Reclassification of pension liability adjustment to net earnings	26.2	2.3	26.3	4.6
Tax effect	(6.3)	(0.8)	(6.4)	(1.7)
Other comprehensive income/(loss), net of tax	125.1	(89.9)	64.8	(45.0)
Comprehensive income	$ 683.3	$ 580.5	$ 1,128.4	$ 1,038.0