Commitments and Contingencies - Price Fixing Lawsuits (Details)	Jun. 30, 2020 manufacturer	Jun. 10, 2020 retailer manufacturer pharmaceuticalProduct plaintiffGroup	Nov. 14, 2019 class	Jun. 21, 2017 genericPrescriptionPharmaceutical
Loss Contingencies [Line Items]
Number of classes | class			3
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical				6
State Attorney General Complaint
Loss Contingencies [Line Items]
Number of additional states and territories | plaintiffGroup		50
Number of manufacturers		35
Loss contingency, number of former employees | retailer		2
Number of generic prescription pharmaceuticals | pharmaceuticalProduct		80
Canadian Class Action Complaint
Loss Contingencies [Line Items]
Number of manufacturers	29