Commitments, Contingent Liabilities and Litigation (Details) $ in Millions		1 Months Ended	3 Months Ended
	Apr. 28, 2017 plaintiff lawsuit	Jul. 31, 2014	Mar. 31, 2017 USD ($)	Sep. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Accrued Litigation Charges, Net			$ 93.0
Subsequent Event
Loss Contingencies [Line Items]
Number of lawsuits filed | lawsuit	58
Number of plaintiffs | plaintiff	500
State of West Virginia vs Cardinal Health, Inc [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability			20.0
Litigation accrual			20.0
CVS Health
Loss Contingencies [Line Items]
Initial term of pharmaceutical sourcing venture		10 years
Maximum quarterly payment			$ 45.6
Cordis [Member]
Loss Contingencies [Line Items]
Accrued Legal Defense Costs				$ 79.0