Name:	cvs_AcceleratedShareRepurchasesAgreementAmount
Namespace Prefix:	cvs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the additional number of shares of common stock receivable under the entity's fixed dollar accelerated share repurchase agreement with Barclays Bank PLC, depending on the market price of common stock over the term of the ASR agreement.

No definition available.

Name:	cvs_AcceleratedShareRepurchasesNumberOfAdditionalSharesReceivable
Namespace Prefix:	cvs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Represents the additional number of shares of common stock repurchased under the entity's fixed dollar accelerated share repurchase agreement with Barclays Bank PLC, upon establishment of the minimum number of shares to be repurchased.

No definition available.

Name:	cvs_AcceleratedShareRepurchasesNumberOfAdditionalSharesRepurchased
Namespace Prefix:	cvs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Represents the number of shares of common stock repurchased under the entity's fixed dollar accelerated share repurchase agreement with Barclays Bank PLC.

No definition available.

Name:	cvs_AcceleratedShareRepurchasesNumberOfSharesRepurchased
Namespace Prefix:	cvs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Represents the number of shares of common stock repurchased under the entity's fixed dollar accelerated share repurchase agreement with Barclays Bank PLC that were placed into treasury stock.

No definition available.

Name:	cvs_AcceleratedShareRepurchasesNumberOfSharesRepurchasedPlacedIntoTreasuryStock
Namespace Prefix:	cvs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Represents the price paid for the purchase of targeted number of shares, under the entity's fixed dollar accelerated share repurchase agreement with Barclays Bank PLC.

No definition available.