Commitments, Contingent Liabilities and Litigation (Details) $ in Millions			3 Months Ended		5 Months Ended	6 Months Ended		9 Months Ended	12 Months Ended		40 Months Ended	176 Months Ended
	Apr. 30, 2023 USD ($) lawsuit	Jul. 31, 2014	Dec. 31, 2024 USD ($) numberOfUSTerritories states	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2024 USD ($) numberOfUSTerritories states	Dec. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Oct. 31, 2024 USD ($)	Dec. 31, 2038 USD ($)	Jan. 27, 2025 lawsuit	Aug. 31, 2024 USD ($)	Nov. 30, 2023 USD ($)	Oct. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)	Apr. 30, 2018 USD ($)
Loss Contingencies [Line Items]
Income from Settlements of Class Action Lawsuits			$ 16	$ 31		$ 59	$ 71
Product Liability Lawsuits | IVC April 2023 Agreement
Loss Contingencies [Line Items]
Loss Contingency, Claims Settled, Number | lawsuit	4,375
Product Liability Lawsuits | Minimum
Loss Contingencies [Line Items]
Loss Contingency Accrual			286			286
Total Opioid Litigation [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability			4,900			4,900
Estimated Litigation Liability, Current			636			$ 636
Litigation Settlement, Loss			$ 340
Income As A Result Of Prepayments									$ 105
Loss Contingency Accrual, Period Increase (Decrease)									$ 344
New York Opioid Stewardship Act [Member]
Loss Contingencies [Line Items]
Aggregate Annual Assessment																		$ 100
Opioid Lawsuits [Member]
Loss Contingencies [Line Items]
Settling States | states			48			48
Settling U.S Territories | numberOfUSTerritories			5			5
Payments for Legal Settlements											$ 1,900
Insurance Recoveries			$ 16			$ 25		$ 34
Opioid Lawsuits [Member] | Subsequent Event
Loss Contingencies [Line Items]
Payments for Legal Settlements												$ 4,400
Opioid Lawsuits [Member] | WEST VIRGINIA
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss																	$ 124
Opioid Lawsuits [Member] | ALABAMA
Loss Contingencies [Line Items]
Litigation Settlement, Loss						22
Loss Contingency, Estimate of Possible Loss															$ 123
Opioid Lawsuits [Member] | Native American tribes
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss																$ 136
Opioid Lawsuits [Member] | City of Baltimore
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss														$ 153
Opioid Lawsuits [Member] | Private Parties [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number | lawsuit													285
Opioid Lawsuits [Member] | Class Action Lawsuits [Member] | Private Parties [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability			$ 213			$ 213
Opioid Lawsuits [Member] | Class Action Lawsuits [Member] | Private Parties [Member] | Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number | lawsuit													87
Product Liability Lawsuits
Loss Contingencies [Line Items]
Product Liability Accrual, Period Expense										$ (103)
Product Liability Lawsuits | IVC April 2023 Agreement
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 275
Payments for Legal Settlements					$ 275
CVS Health
Loss Contingencies [Line Items]
Long-term Purchase Commitment, Period		10 years