XML 46 R26.htm IDEA: XBRL DOCUMENT
v3.21.2

Significant Accounting Policies - Narrative (Details) people in Millions, patient in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) patient people state location clinic | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) patient Segment people state location clinic | Jun. 30, 2020 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of pharmacy plan members | people | 108 |  | 108 |
Number of patients served per year | patient | 1 |  | 1 |
Number of reportable segments | Segment |  |  | 4 |
Health insurer fee | $ 0 | $ 248,000,000 | $ 0 | $ 519,000,000
Related party transaction, expenses from transactions with related party | 10,000,000 | 3,000,000 | 19,000,000 | 23,000,000
Related party transaction, other revenues from transactions with related party | $ 19,000,000 | $ 22,000,000 | $ 37,000,000 | $ 43,000,000
Heartland Healthcare Services |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of states in which entity operates | state | 4 |  | 4 |
Retail/ LTC |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of stores | location | 9,900 |  | 9,900 |
Number of walk in medical clinics | clinic | 1,100 |  | 1,100 |
Health Care Benefits |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of people served | people | 34 |  | 34 |

X
- Definition Represents the estimated amount of the health insurer fee accrued during the reporting period, as required by Health Care Reform. + References No definition available. + Details
Name: | cvs_HealthInsurerFee
Namespace Prefix: | cvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number Of People Served + References No definition available. + Details
Name: | cvs_NumberOfPeopleServed
Namespace Prefix: | cvs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Patients Served per Year + References No definition available. + Details
Name: | cvs_NumberofPatientsServedperYear
Namespace Prefix: | cvs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Pharmacy Plan Members + References No definition available. + Details
Name: | cvs_NumberofPharmacyPlanMembers
Namespace Prefix: | cvs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Walk In Medical Clinics + References No definition available. + Details
Name: | cvs_NumberofWalkInMedicalClinics
Namespace Prefix: | cvs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599 + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of stores. + References No definition available. + Details
Name: | us-gaap_NumberOfStores
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=cvs_HeartlandHealthcareServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cvs_RetailLongTermCareSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cvs_HealthCareBenefitsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |