Contingencies (Details) $ in Millions	Jan. 31, 2024 USD ($) order shareholder classAction singleCountyCase securitiesClassAction	Nov. 15, 2022 USD ($)	Aug. 17, 2022 USD ($) defendant	Oct. 25, 2023 case	Jan. 31, 2023 USD ($)	Dec. 20, 2022 state	Oct. 31, 2022 USD ($)	Sep. 27, 2021 shareholder
Loss Contingencies [Line Items]
Loss contingency, accrued liabilities	$ 0				$ 2,949
Number of single-county cases | singleCountyCase	5
Number of cases brought by third-party payers | case				4
Opioids Litigation
Loss Contingencies [Line Items]
Loss contingency, accrued liabilities							$ 3,300
Amount awarded to other party		$ 3,100
Loss contingency, damages paid, amount	$ 3,300
Number of days following a satisfied condition from a settlement administrator	15 days
Number of states with settlement agreements | state						50
Number of securities class actions | securitiesClassAction	2
Number of shareholders that filed derivative actions | shareholder	2							3
Number of orders issued | order	2
Opioids Litigation | Judicial Ruling
Loss Contingencies [Line Items]
Loss contingency, number of defendants | defendant			3
Loss contingency, damages awarded, value			$ 700
Loss contingency, damages awarded, period			15 years
Canada Opioids Class Action Complaints
Loss Contingencies [Line Items]
Number of putative class actions | classAction	2