Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 810.7	$ 820.9	$ 2,060.3	$ 2,054.9
Other comprehensive income/(loss):
Currency translation adjustments	(27.5)	(68.4)	84.8	(83.0)
Unrealized net (losses)/gains on available-for-sale securities	(352.5)	139.3	(421.2)	199.9
Tax effect	79.2	(32.2)	94.7	(45.4)
Reclassification of net (gains)/losses on available-for-sale securities to net earnings	0.4	(2.5)	(7.6)	(11.9)
Tax effect	(0.1)	0.6	1.7	2.6
Unrealized (losses)/gains on cash flow hedging activities	0.0	(38.2)	(3.3)	(37.4)
Tax effect	0.0	9.5	0.8	9.2
Amortization of unrealized losses on cash flow hedging activities	1.1	0.0	2.7	0.0
Tax effect	(0.3)	0.0	(0.6)	0.0
Reclassification of pension liability adjustment to net earnings	2.8	(15.0)	7.8	(14.8)
Tax effect	(1.1)	3.7	(2.7)	3.7
Other comprehensive (loss)/income, net of tax	(298.0)	(3.2)	(242.9)	22.9
Comprehensive income	$ 512.7	$ 817.7	$ 1,817.4	$ 2,077.8