Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 813.1	$ 694.4	$ 1,592.2	$ 1,394.9
Other comprehensive (loss)/income:
Currency translation adjustments	71.1	(16.4)	(13.6)	(51.5)
Unrealized net (losses)/gains on available-for-sale securities	242.2	(247.6)	(592.9)	(377.9)
Tax effect	(51.2)	56.4	134.5	85.7
Reclassification of net losses/(gains) on available-for-sale securities to net earnings	11.5	(0.4)	13.0	(0.5)
Tax effect	(2.7)	0.1	(2.9)	0.1
Amortization of unrealized losses on cash flow hedging activities	1.1	1.1	2.2	2.2
Tax effect	(0.2)	(0.3)	(0.5)	(0.6)
Reclassification of pension liability adjustment to net earnings	1.5	1.9	3.6	4.0
Tax effect	(0.1)	(0.3)	(0.6)	(0.5)
Other comprehensive (loss)/income, net of tax	273.2	(205.5)	(457.2)	(339.0)
Comprehensive income	$ 1,086.3	$ 488.9	$ 1,135.0	$ 1,055.9