Commitments, Contingent Liabilities and Litigation Narrative (Details) $ in Millions		3 Months Ended		12 Months Ended
	Nov. 02, 2020 Reportable_Segments	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Loss Contingencies [Line Items]
Gain (Loss) Related to Litigation Settlement		$ (1,038.0)	$ (5,673.0)
Income Tax Expense (Benefit)		(410.0)	(423.0)
Opioid Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number | Reportable_Segments	3,300
Lawsuits Against Distributors | Reportable_Segments	25
Product Liability Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | Reportable_Segments	31
New York Opioid Stewardship Act [Member]
Loss Contingencies [Line Items]
Aggregate Annual Assessment		100.0
Estimated Liability for New York Opioid Stewardship Act		$ 41.0
Opioid Lawsuits State [Domain] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number | Reportable_Segments	2,800
CVS Health
Loss Contingencies [Line Items]
Long-term Purchase Commitment, Period		10 years
Maximum quarterly payment		$ 45.6
Product Liability Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | Reportable_Segments	354
Minimum | Product Liability Lawsuits [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual		494.0
Alameda County [Member] | Product Liability Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | Reportable_Segments	4,526
Other Jurisdictions [Member] | Product Liability Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | Reportable_Segments	36
Total Opioid Litigation [Member]
Loss Contingencies [Line Items]
litigation settlement liability recorded		6,590.0
Gain (Loss) Related to Litigation Settlement		1,020.0	5,630.0
Litigation Charges		1,020.0	$ 5,630.0
Income Tax Expense (Benefit)		(450.0)			$ 488.0
Total Opioid Litigation [Member] | Forecast [Member]
Loss Contingencies [Line Items]
Income Tax Expense (Benefit)				$ 35.0
Private Parties [Member] | Opioid Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number | Reportable_Segments	411
Class Action Lawsuits [Member] | Private Parties [Member] | Opioid Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number | Reportable_Segments	116
Product Liability Lawsuits [Member] | Maximum
Loss Contingencies [Line Items]
Loss Contingency Accrual		$ 961.0