Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,013.0	$ 956.3
Other comprehensive income:
Currency translation adjustments	(15.5)	49.2
Unrealized net gains on available-for-sale securities	215.7	864.4
Tax effect	(48.3)	(197.9)
Reclassification of realized net (gains)/losses on available-for-sale securities to net earnings	(1.5)	0.2
Tax effect	0.3	0.0
Unrealized losses on cash flow hedging activities	0.0	(12.5)
Tax effect	0.0	3.1
Amortization of unrealized losses on cash flow hedging activities	1.5	1.1
Tax effect	(0.4)	(0.3)
Reclassification of pension liability adjustment to net earnings	1.2	1.1
Tax effect	(0.3)	(0.3)
Other comprehensive income, net of tax	152.7	708.1
Comprehensive income	$ 1,165.7	$ 1,664.4