Commitments, Contingent Liabilities and Litigation (Details) $ in Millions					3 Months Ended		6 Months Ended
	Jan. 31, 2019 organization	Jan. 31, 2019 jurisdictions	Jan. 31, 2019 category	Jan. 31, 2019 lawsuit	Dec. 31, 2018 USD ($)	Sep. 30, 2018 category	Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Opioid Stewardship Act Loss Contingency Accrual | category						34,000,000
Income from Settlements of Class Action Lawsuits					$ 47.0
Product Liability Lawsuits | Subsequent Event
Loss Contingencies [Line Items]
Number of lawsuits filed | lawsuit				22
CVS Health
Loss Contingencies [Line Items]
Maximum quarterly payment							$ 45.6
Opioid Lawsuits | Subsequent Event
Loss Contingencies [Line Items]
Opioid Stewardship Act Loss Contingency Accrual | jurisdictions		10
Number of lawsuits filed			1,500	56
Product Liability Lawsuits | Subsequent Event
Loss Contingencies [Line Items]
Number of lawsuits filed | lawsuit				212
Minimum
Loss Contingencies [Line Items]
Loss contingency accrual, net of insurance recoveries					302.0		302.0
Maximum
Loss Contingencies [Line Items]
Loss contingency accrual, net of insurance recoveries					$ 519.0		$ 519.0
Alameda County [Member] | Product Liability Lawsuits | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs | organization	2,394
Other Jurisdictions [Member] | Product Liability Lawsuits | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs | organization	24
State Attorney General [Member] | Opioid Lawsuits | Subsequent Event
Loss Contingencies [Line Items]
Opioid Stewardship Act Loss Contingency Accrual | jurisdictions		39