Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Net of Tax		$ (259.3)	$ (164.1)	$ 45.5
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		(379.2)	(215.1)	(260.6)
Other comprehensive income/(loss) before reclassification adjustments		(370.9)	(273.1)	63.9
Tax effect		104.7	98.0	(29.3)
Reclassification adjustments to net earnings		12.0	18.4	17.0
Tax effect		(5.1)	(7.4)	(6.1)
Tax Cuts and Jobs Act of 2017, Reclassfication from AOCI to Retained Earnings, Tax Effect	[1]	(42.3)
Accumulated Other Comprehensive, ending balance		(680.8)	(379.2)	(215.1)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		(230.8)	(253.8)	(228.3)
Other comprehensive income/(loss) before reclassification adjustments		2.8	23.0	(25.5)
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
Tax Cuts and Jobs Act of 2017, Reclassfication from AOCI to Retained Earnings, Tax Effect	[1]	0.0
Accumulated Other Comprehensive, ending balance		(228.0)	(230.8)	(253.8)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		68.3	333.8	143.9
Other comprehensive income/(loss) before reclassification adjustments		(460.7)	(405.7)	288.8
Tax effect		123.4	141.6	(102.2)
Reclassification adjustments to net earnings	[2]	2.7	(2.2)	5.0
Tax effect		(0.6)	0.8	(1.7)
Tax Cuts and Jobs Act of 2017, Reclassfication from AOCI to Retained Earnings, Tax Effect	[1]	(7.1)
Accumulated Other Comprehensive, ending balance		(274.0)	68.3	333.8
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive, beginning balance		(216.7)	(295.1)	(176.2)
Other comprehensive income/(loss) before reclassification adjustments		87.0	109.6	(199.4)
Tax effect		(18.7)	(43.6)	72.9
Reclassification adjustments to net earnings	[3]	9.3	20.6	12.0
Tax effect		(4.5)	(8.2)	(4.4)
Tax Cuts and Jobs Act of 2017, Reclassfication from AOCI to Retained Earnings, Tax Effect	[1]	(35.2)
Accumulated Other Comprehensive, ending balance		$ (178.8)	$ (216.7)	$ (295.1)

[1] During fiscal 2018, the Company adopted ASU 2018-02 and reclassified stranded tax effects attributable to the Act from AOCI to retained earnings. The fiscal 2018 Consolidated Balance Sheets reflect the reclassification out of accumulated other comprehensive (loss)/income into retained earnings (see Note 1).

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

[3] Reclassification adjustments out of AOCI are included in net pension expense (see Note 11).