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Commitments, Contingent Liabilities and Litigation (Details) $ in Millions		12 Months Ended			61 Months Ended	149 Months Ended
	Jul. 31, 2014	Jun. 30, 2026 USD ($) vestingPeriods	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jul. 31, 2026 USD ($)	Dec. 31, 2038 USD ($)	Aug. 06, 2026 vestingPeriods lawsuit	Feb. 02, 2026 USD ($)	Apr. 30, 2018 USD ($)
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss								$ 160
Gain (Loss) Related to Litigation Settlement		$ 10	$ 185	$ (78)
Income Tax Examination, Estimate of Possible Loss		400
Income from Settlements of Class Action Lawsuits		24	171	117
Deferred income taxes and other liabilities		9,115	8,882
Net Operating Loss Carryback
Loss Contingencies [Line Items]
Deferred income taxes and other liabilities		1,400
CVS Health Corporation
Loss Contingencies [Line Items]
Long-Term Purchase Commitment, Period	10 years
Opioid Lawsuits
Loss Contingencies [Line Items]
Insurance Recoveries		5	25
Insurance Recoveries - Pharma		$ 12
Loss Contingency, Number of State \| vestingPeriods		50
Settling U.S Territories \| vestingPeriods		5
Opioid Lawsuits \| Subsequent Event
Loss Contingencies [Line Items]
Payments for Legal Settlements					$ 2,600	$ 3,700
Product Liability Lawsuits
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		$ 448
New York Opioid Stewardship Act
Loss Contingencies [Line Items]
Aggregate Annual Assessment									$ 100
Loss Contingency, Receivable, Proceeds		17
Total Opioid Litigation [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability		4,300
Estimated Litigation Liability, Current		468
Litigation settlement				$ 5,600
Litigation Settlement, Loss		417	$ 798
Private Parties [Member] \| Opioid Lawsuits \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number \| lawsuit							73
Class Action Lawsuits [Member] \| Private Parties [Member] \| Opioid Lawsuits
Loss Contingencies [Line Items]
Estimated Litigation Liability		$ 213
Class Action Lawsuits [Member] \| Private Parties [Member] \| Opioid Lawsuits \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Lawsuits, Number \| lawsuit							13
Product Liability Lawsuits
Loss Contingencies [Line Items]
Loss Contingency, Claims Settled, Number \| vestingPeriods		6,845
Product Liability Lawsuits \| Subsequent Event
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number \| vestingPeriods							9
Product Liability Lawsuits \| Minimum
Loss Contingencies [Line Items]
Loss contingency accrual		$ 29