Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,043.1	$ 928.5	$ 2,635.3	$ 2,323.4
Other comprehensive (loss)/income:
Currency translation adjustments	15.6	(14.2)	2.0	(65.7)
Unrealized net (losses)/gains on available-for-sale securities	392.0	(1,192.5)	(200.9)	(1,570.4)
Tax effect	(86.6)	270.3	47.9	356.0
Reclassification of realized net losses/(gains) on available-for-sale securities to net earnings	0.9	0.3	13.9	(0.2)
Tax effect	(0.2)	(0.1)	(3.1)	0.0
Amortization of unrealized losses on cash flow hedging activities	1.1	1.1	3.3	3.3
Tax effect	(0.3)	(0.3)	(0.8)	(0.9)
Reclassification of pension liability adjustment to net earnings	0.6	1.9	4.2	5.9
Tax effect	0.0	(0.4)	(0.6)	(0.9)
Other comprehensive (loss)/income, net of tax	323.1	(933.9)	(134.1)	(1,272.9)
Comprehensive income	$ 1,366.2	$ (5.4)	$ 2,501.2	$ 1,050.5