Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Net of Tax		$ 242.5	$ 422.5	$ (254.3)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		(257.3)
Other comprehensive income/(loss) before reclassification adjustments		348.1	515.5	(365.9)
Tax effect		86.9	(124.4)	104.7
Reclassification adjustments to net earnings		(24.7)	41.2	12.0
Tax effect		6.0	(9.8)	(5.1)
Accumulated Other Comprehensive, ending balance		(14.8)	(257.3)
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect				(42.3)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		(22.0)	48.7	319.5
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		(269.2)	(227.0)	(234.8)
Other comprehensive income/(loss) before reclassification adjustments		(53.0)	(42.2)	7.8
Tax effect		0.0	0.0	0.0
Reclassification adjustments to net earnings		0.0	0.0	0.0
Tax effect		0.0	0.0	0.0
Accumulated Other Comprehensive, ending balance		(322.2)	(269.2)	(227.0)
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect				0.0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		224.6	(274.0)	68.3
Other comprehensive income/(loss) before reclassification adjustments		602.2	642.4	(460.7)
Tax effect		136.4	(144.4)	123.4
Reclassification adjustments to net earnings	[1]	(12.9)	0.9	2.7
Tax effect		2.9	(0.3)	(0.6)
Accumulated Other Comprehensive, ending balance		680.4	224.6	(274.0)
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect				(7.1)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		(212.7)	(178.8)	(216.7)
Other comprehensive income/(loss) before reclassification adjustments		(160.8)	(84.7)	87.0
Tax effect		(39.5)	20.0	(18.7)
Reclassification adjustments to net earnings	[2]	(11.8)	40.3	9.3
Tax effect		3.1	(9.5)	(4.5)
Accumulated Other Comprehensive, ending balance		(342.7)	(212.7)	(178.8)
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect				(35.2)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		(257.3)	(679.8)	(383.2)
Accumulated Other Comprehensive, ending balance		(14.8)	(257.3)	(679.8)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		0.0	0.0	0.0
Other comprehensive income/(loss) before reclassification adjustments		(40.3)	0.0	0.0
Tax effect		10.0	0.0	0.0
Reclassification adjustments to net earnings		0.0	0.0	0.0
Tax effect		0.0	0.0	0.0
Accumulated Other Comprehensive, ending balance		$ (30.3)	$ 0.0	0.0
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect				$ 0.0

[1] Reclassification adjustments out of AOCI are included within Other (income)/expense, net, on the Statements of Consolidated Earnings.

[2] Reclassification adjustments out of AOCI are included in net pension (income)/expense (see Note 10). In fiscal 2020, reclassification includes $17.0 million of prior service credits which were recognized as a component of net pension (income)/expense as a result of the US pension plan freeze.