Subsequent Events (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
	Oct. 01, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Subsequent Event
Unrecognized Tax Benefits, Including Income Tax Penalties and Interest Accrued		$ 2.0			$ 2.0					$ 5.0
Assets		10,830.0			10,830.0		$ 10,508.0	$ 11,148.0	$ 10,206.0	10,508.0
Line of Credit, Current		715.0			715.0
Other comprehensive income/(loss) before reclassifications		25.0	$ (6.0)		22.0	$ (35.0)
Foreign currency translation adjustments		27.0	(22.0)		10.0	(54.0)
Net change in derivatives and hedges, net of tax		(2.0)	17.0		12.0	21.0
Available for sale investments		2.0	(1.0)		4.0	(2.0)
Other Comprehensive Income, Other, Net of Tax		27.0	(5.0)		26.0	(33.0)
Accumulated other comprehensive income/(loss)		(368.0)	(350.0)		(368.0)	(350.0)		(395.0)		(394.0)	$ (345.0)	$ (317.0)
Amounts reclassified from accumulated other comprehensive income/(loss)		2.0	(1.0)		4.0	2.0
Pension and other post-retirement adjustments		0.0	1.0		0.0	2.0
Tax expense/(benefit)			1.0		0.0	(1.0)
Accumulated Translation Adjustment [Member]
Subsequent Event
Other comprehensive income/(loss) before reclassifications		27.0	(22.0)		10.0	(54.0)
Foreign currency translation adjustments			(22.0)		10.0	(54.0)
Accumulated other comprehensive income/(loss)		(368.0)	(322.0)		(368.0)	(322.0)		(395.0)		(378.0)	(300.0)	(268.0)
Amounts reclassified from accumulated other comprehensive income/(loss)		0.0
AOCI, Derivative Qualifying as Hedge, Parent [Member]
Subsequent Event
Other comprehensive income/(loss) before reclassifications		(2.0)	17.0		12.0	21.0
Accumulated other comprehensive income/(loss)		39.0	21.0		39.0	21.0		41.0		27.0	4.0
Amounts reclassified from accumulated other comprehensive income/(loss)		0.0
ACOI, Accumulated Gain (Loss), Marketable Securities [Member]
Subsequent Event
Other comprehensive income/(loss) before reclassifications		0.0	(1.0)	$ 0.0		(2.0)
Net change in derivatives and hedges, net of tax		(2.0)	17.0		12.0	21.0
Available for sale investments			(1.0)		4.0	(2.0)
Accumulated other comprehensive income/(loss)		0.0	(3.0)		0.0	(3.0)		(2.0)		(4.0)	(2.0)	(1.0)
Amounts reclassified from accumulated other comprehensive income/(loss)		2.0			4.0
Accumulated Defined Benefit Plans Adjustment [Member]
Subsequent Event
Other comprehensive income/(loss) before reclassifications		0.0
Accumulated other comprehensive income/(loss)		(38.0)	(45.0)		(38.0)	(45.0)		(38.0)		(38.0)	(46.0)	(47.0)
Amounts reclassified from accumulated other comprehensive income/(loss)		0.0	1.0			2.0
Pension and other post-retirement adjustments		0.0	1.0		0.0	2.0
Available-for-sale Securities [Member]
Subsequent Event
Other comprehensive income/(loss) before reclassifications		0.0
Other Comprehensive Income, Other, Net of Tax		0.0
Accumulated other comprehensive income/(loss)		(1.0)	(1.0)		(1.0)	(1.0)		$ (1.0)		(1.0)	$ (1.0)	$ (1.0)
Amounts reclassified from accumulated other comprehensive income/(loss)		0.0
PharmaConsumerHealth
Subsequent Event
Segment EBITDA		125.0	$ 144.0		368.0	$ 390.0
Assets		$ 4,847.0			$ 4,847.0					$ 4,356.0
Metrics
Subsequent Event
Business Combination, Consideration Transferred	$ 474.0