Commitments and Contingencies (Details)	1 Months Ended		3 Months Ended	7 Months Ended
	Oct. 31, 2020 entity	May 31, 2020 state entity	Mar. 31, 2013 member	Aug. 31, 2019 claim	Sep. 30, 2020 store
Loss Contingencies [Line Items]
Guarantor obligations, number of leases | store					76
Sample size | member			200
Number of pending claims | claim				6
Blue Cross and Blue Shield of Alabama vs. CVS Health Corporation | Pending Litigation
Loss Contingencies [Line Items]
Number of entities filing claims		8
Number of states in which entities filed claims | state		6
Blue Cross And Blue Shield Of New Jersey [Member] | Pending Litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of entities filing claims	2