Represents the number of store leases guaranteed by the reporting entity.

No definition available.

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- Definition

Loss Contingency, Number of Directors Named in Lawsuit

+ References

No definition available.

+ Details

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- Definition

Loss Contingency, Number of Officers Named in Lawsuit

+ References

No definition available.

+ Details

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- Definition

Loss Contingency, Number of Pharmacies Indicated in Subpoena

+ References

No definition available.

+ Details

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Namespace Prefix:	cvs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of independent pharmacies which have filed putative class action against the reporting entity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

Represents the number of states participating in multi-state investigation under Federal Trade Commission Act.

+ References

No definition available.

+ Details

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Namespace Prefix:	cvs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
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- Details

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- Details

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- Details

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Commitments and Contingencies (Details) $ in Millions		1 Months Ended
Commitments and Contingencies (Details) $ in Millions	Oct. 29, 2010 USD ($) plaintiff	Oct. 31, 2016 USD ($)	Sep. 30, 2015 pharmacy	Mar. 31, 2010 state	Feb. 28, 2006 director class_action_complaint officer	Oct. 31, 2003 pharmacy class_action_complaint	Dec. 31, 2016 lease
Loss contingencies
Number of store leases guaranteed \| lease							87
Number of pharmacies filing putative action \| pharmacy						2
New claims filed, number \| class_action_complaint						3
Number of pharmacies indicated in subpoena \| pharmacy			8
Omnicare, Inc.
Loss contingencies
New claims filed, number \| class_action_complaint					2
Number of officers named in lawsuit \| officer					3
Number of directors named in lawsuit \| director					2
Multi-state Investigation
Loss contingencies
Number of states participating in multi-state investigation \| state				28
Banigan and Templin v. Organon USA, Inc., Omnicare, Inc. and PharMerica Corporation \| Omnicare, Inc.
Loss contingencies
Litigation settlement, amount	$ 23.0
Number of plaintiffs \| plaintiff	2
Omnicare's Nationwide Billing Practices, Pure Service Pharmacy \| Omnicare, Inc.
Loss contingencies
Litigation settlement, amount		$ 1.5
Auto Label Verification \| Omnicare, Inc.
Loss contingencies
Litigation settlement, amount		8.0
Controlled Substances Act
Loss contingencies
Litigation settlement, amount		$ 5.0