Commitments and contingencies (Details) - Pending Litigation	Feb. 28, 2022 case
City and Cnty. of San Francisco, et al. v. Purdue Pharma L.P., et al.
Loss Contingencies [Line Items]
Number of litigation cases outstanding	1
Cnty. of Lake, Ohio v. Purdue Pharma L.P., et al.
Loss Contingencies [Line Items]
Number of litigation cases outstanding	2
The Cherokee Nation v. McKesson Corp., et al.
Loss Contingencies [Line Items]
Number of litigation cases outstanding	1
Bellweather Litigation Cases
Loss Contingencies [Line Items]
Number of litigation cases outstanding	5
Consolidated Cases in N.D. Ohio
Loss Contingencies [Line Items]
Number of litigation cases outstanding	2
Consolidated Cases in New York State Court
Loss Contingencies [Line Items]
Number of litigation cases outstanding	2