Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 2,948.9	$ 2,598.5	$ 2,466.5
Other comprehensive (loss)/income:
Currency translation adjustments	(127.4)	95.4	(53.0)
Unrealized net (losses)/gains on available-for-sale securities	(2,228.0)	(363.3)	602.2
Tax effect	503.7	82.6	(136.4)
Reclassification of net losses/(gains) on available-for-sale securities to net earnings	4.4	(11.3)	(12.9)
Tax effect	(1.0)	2.5	2.9
Unrealized (losses)/gains on cash flow hedging activities	0.0	(3.3)	(40.3)
Tax effect	0.0	0.8	10.0
Amortization of unrealized losses on cash flow hedging activities	4.4	3.8	0.0
Tax effect	(1.1)	(0.9)	0.0
Pension net (losses)/gains arising during the year	(229.8)	281.5	(160.8)
Tax effect	57.3	(69.0)	39.5
Reclassification of pension liability adjustment to net earnings	18.1	9.3	(11.8)
Tax effect	(4.9)	(2.7)	3.1
Other comprehensive (loss)/income, net of tax	(2,004.3)	25.4	242.5
Comprehensive income	$ 944.6	$ 2,623.9	$ 2,709.0