Reclassifications out of Accumulated Other Comprehensive Income (AOCI) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
AOCI Net of Tax [Roll Forward]
Beginning balance	$ 5,900.0	$ 5,364.4	$ 5,752.2	$ 5,399.9
Other comprehensive (loss)/income before reclassification adjustments	(380.0)	32.7	(339.7)	79.5
Tax effect	79.2	(22.7)	95.5	(36.2)
Reclassification adjustments to net earnings	4.3	(17.5)	2.9	(26.7)
Tax effect	(1.5)	4.3	(1.6)	6.3
Ending balance	5,673.9	5,490.7	5,673.9	5,490.7
Prior service credits recognized		17.0		17.0
AOCI
AOCI Net of Tax [Roll Forward]
Beginning balance	40.3	(231.2)	(14.8)	(257.3)
Ending balance	(257.7)	(234.4)	(257.7)	(234.4)
Currency Translation Adjustment
AOCI Net of Tax [Roll Forward]
Beginning balance	(209.9)	(283.8)	(322.2)	(269.2)
Other comprehensive (loss)/income before reclassification adjustments	(27.5)	(68.4)	84.8	(83.0)
Tax effect	0.0	0.0	0.0	0.0
Reclassification adjustments to net earnings	0.0	0.0	0.0	0.0
Tax effect	0.0	0.0	0.0	0.0
Ending balance	(237.4)	(352.2)	(237.4)	(352.2)
Net Gains/Losses on Available-for-sale Securities
AOCI Net of Tax [Roll Forward]
Beginning balance	621.0	264.6	680.4	224.6
Other comprehensive (loss)/income before reclassification adjustments	(352.5)	139.3	(421.2)	199.9
Tax effect	79.2	(32.2)	94.7	(45.4)
Reclassification adjustments to net earnings	0.4	(2.5)	(7.6)	(11.9)
Tax effect	(0.1)	0.6	1.7	2.6
Ending balance	348.0	369.8	348.0	369.8
Cash Flow Hedging Activities
AOCI Net of Tax [Roll Forward]
Beginning balance	(31.5)	0.5	(30.3)	0.0
Other comprehensive (loss)/income before reclassification adjustments	0.0	(38.2)	(3.3)	(37.4)
Tax effect	0.0	9.5	0.8	9.2
Reclassification adjustments to net earnings	1.1	0.0	2.7	0.0
Tax effect	(0.3)	0.0	(0.6)	0.0
Ending balance	(30.7)	(28.2)	(30.7)	(28.2)
Pension Liability
AOCI Net of Tax [Roll Forward]
Beginning balance	(339.3)	(212.5)	(342.7)	(212.7)
Other comprehensive (loss)/income before reclassification adjustments	0.0	0.0	0.0	0.0
Tax effect	0.0	0.0	0.0	0.0
Reclassification adjustments to net earnings	2.8	(15.0)	7.8	(14.8)
Tax effect	(1.1)	3.7	(2.7)	3.7
Ending balance	$ (337.6)	$ (223.8)	$ (337.6)	$ (223.8)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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