Accounting Policies [Abstract]
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Consolidation Items [Axis]
Consolidation Items [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Operating Segments [Member]
Operating Segments [Member]
Intersegment Eliminations [Member]
Intersegment Eliminations [Member]
Contract with Customer, Sales Channel [Axis]
Contract with Customer, Sales Channel [Axis]
Pharmacy services distribution channel
Contract with Customer, Sales Channel [Domain]
Pharmacy network
Sales Channel, Directly to Consumer [Member]
Mail choice
Sales Channel, Through Intermediary [Member]
Other
Sales Channel, Other [Member]
Sales Channel, Other [Member]
Product and Service [Axis]
Product and Service [Axis]
Product and Service [Domain]
Product and Service [Domain]
Pharmacy
Pharmacy Revenue [Member]
Pharmacy Revenue [Member]
Front Store
Front Store Revenue [Member]
Front Store Revenue [Member]
Premiums
Premiums [Member]
Premiums [Member]
Other
Product and Service, Other [Member]
Segments [Axis]
Segments [Axis]
Segments [Domain]
Segments [Domain]
Pharmacy Services Segment [Member]
Pharmacy Services Segment [Member]
Pharmacy Services Segment [Member]
Retail Long-Term Care Segment [Member]
Retail Long-Term Care Segment [Member]
Retail Long-Term Care Segment [Member]
Health Care Benefits Segment [Member]
Health Care Benefits Segment [Member]
Health Care Benefits Segment [Member]
Corporate / Other [Member]
Corporate / Other [Member]
Corporate / Other [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Revenues
Revenue from Contract with Customer, Excluding Assessed Tax
Net investment income
Net Investment Income
Total revenues
Revenues
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Restricted cash (included in other current assets)
Restricted Cash, Current
Restricted cash (included in other assets)
Restricted Cash, Noncurrent
Total cash, cash equivalents and restricted cash in the statements of cash flows
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Investments [Abstract]
Schedule of Available-for-sale Securities [Table]
Schedule of Available-for-sale Securities [Table]
Total Investments [Axis]
Total Investments [Axis]
Total Investments [Domain]
Total Investments [Domain]
Financial Instrument [Axis]
Financial Instrument [Axis]
Financial Instruments [Domain]
Financial Instruments [Domain]
Debt Securities [Member]
US Government Agencies Debt Securities [Member]
US States and Political Subdivisions Debt Securities [Member]
Debt Security, Corporate, US [Member]
Debt Security, Corporate, Non-US [Member]
Residential Mortgage Backed Securities [Member]
Commercial Mortgage Backed Securities [Member]
Other Asset-Backed Securities [Member]
Securities collateralized by a variety of assets such as automobile loans, credit card receivables, home equity loans, etc.
Redeemable Preferred Stock [Member]
Equity Securities [Member]
Supporting Experience Rated Products [Member]
Supporting discontinued and experience-rated products.
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost Basis
Available-for-sale Securities, Amortized Cost Basis
Available-for-sale Securities, Gross Unrealized Gain
Available-for-sale Securities, Gross Unrealized Gain
Available-for-sale Securities, Gross Unrealized Loss
Available-for-sale Securities, Gross Unrealized Loss
Available-for-sale Securities, Fair Value
Available-for-sale Securities
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Aetna Inc. [Member]
Aetna Inc. [Member]
Aetna Inc. [Member]
Debt Subject to Mandatory Redemption [Axis]
Debt Subject to Mandatory Redemption [Axis]
Debt Subject to Mandatory Redemption [Axis]
Debt Subject to Mandatory Redemption [Domain]
Humana Debt Subject to Mandatory Redemption [Domain]
[Domain] for Debt Subject to Mandatory Redemption [Axis]
Class of Stock [Axis]
Class of Stock [Axis]
Class of Stock [Domain]
Class of Stock [Domain]
Common Stock [Member]
Common Stock [Member]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Business Combination, Per Share Exchange Ratio
Business Combination, Per Share Exchange Ratio
Business Combination, Per Share Exchange Ratio
Business Combination, Acquisition Value Per Share Acquired
Business Combination, Acquisition Value Per Share Acquired
Business Combination, Acquisition Value Per Share Acquired
Business Combination, Consideration Transferred
Business Combination, Consideration Transferred
Business Acquisition, Share Price
Business Acquisition, Share Price
Business Combination Acquisition Assigned Value Of Acquiree
Business Combination Acquisition Assigned Value Of Acquiree
Business Combination Acquisition Assigned Value Of Acquiree
Long-term Debt
Long-term Debt
Number of Stores
Number of Stores
Number of Walk In Medical Clinics
Number of Walk In Medical Clinics
Number of Walk In Medical Clinics
New Accounting Pronouncements or Change in Accounting Principle [Table]
New Accounting Pronouncements or Change in Accounting Principle [Table]
Adjustments for New Accounting Pronouncements [Axis]
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption [Domain]
Type of Adoption [Domain]
Accounting Standards Update 2016-02 [Member]
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other current assets
Other Assets, Current
Total current assets
Assets, Current
Property and equipment, net
Property, Plant and Equipment, Net
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
Other assets
Other Assets, Noncurrent
Total assets
Assets
Accrued expenses
Accrued Liabilities, Current
Current portion of operating lease liabilities
Operating Lease, Liability, Current
Current portion of long-term debt
Long-term Debt, Current Maturities
Total current liabilities
Liabilities, Current
Long-term operating lease liabilities
Operating Lease, Liability, Noncurrent
Long-term debt
Long-term Debt, Excluding Current Maturities
Deferred income taxes
Deferred Tax Liabilities, Net, Noncurrent
Other long-term liabilities
Other Liabilities, Noncurrent
Total liabilities
Liabilities
Retained earnings
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Pre-Tax
Retained Earnings (Accumulated Deficit), Pre-Tax
Retained Earnings (Accumulated Deficit), Pre-Tax
Total CVS health shareholders' equity
Stockholders' Equity Attributable to Parent
Total shareholders' equity
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Supporting Experience Rated Products [Member]
Supporting Remaining Products [Member]
Supporting Remaining Products [Member]
Debt securities in an unrealized capital loss position supporting remaining products.
Available-for-sale Securities, Continuous Unrealized Loss Position, Maturities [Axis]
Available-for-sale Securities, Continuous Unrealized Loss Position, Maturities [Axis]
Available-for-sale Securities, Continuous Unrealized Loss Position, Maturities [Axis].
Available-for-sale Securities, Continuous Unrealized Loss Position, Maturities [Domain]
Available-for-sale Securities, Continuous Unrealized Loss Position, Maturities [Domain]
Available-for-sale Securities, Continuous Unrealized Loss Position, Maturities [Domain].
Other Asset-Backed Securities [Member]
Commercial Mortgage Backed Securities [Member]
Residential Mortgage Backed Securities [Member]
Maturing in Less than one Year [Member]
Maturing in Less than one Year [Member]
Maturing in Less than one Year [Member].
Maturing in One Through Five Years [Member]
Maturing in One Through Five Years [Member]
Maturing in One Through Five Years [Member].
Maturing After Five Years Through Ten Years [Member]
Maturing After Five Years Through Ten Years [Member]
Maturing After Five Years Through Ten Years [Member].
Maturing in Greater Than Ten Years [Member]
Maturing in Greater Than Ten Years [Member]
Maturing in Greater Than Ten Years [Member].
Available-for-sale Securities With Established Maturities [Member]
Available-for-sale Securities With Established Maturities [Member].
Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost
Due To Mature Less Than One Year
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost
Due to mature one year through five years
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost
Due to mature after five years through ten years
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost
Due to mature greater than ten years
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value
Debt Securities, Available-for-sale, Amortized Cost
Debt Securities, Available-for-sale, Amortized Cost
Document and Entity [Abstract]
Document and Entity [Abstract]
Entities [Table]
Entities [Table]
Legal Entity [Axis]
Legal Entity [Axis]
Entity [Domain]
Entity [Domain]
Entity Information [Line Items]
Entity Information [Line Items]
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Document Type
Document Type
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Current Reporting Status
Entity Current Reporting Status
Entity Filer Category
Entity Filer Category
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Entity Emerging Growth Company
Entity Emerging Growth Company
Entity Small Business
Entity Small Business
Earnings Per Share [Abstract]
Earnings Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Estimated fair values of the assets acquired and liabilities assumed
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Unaudited pro forma financial information
Business Acquisition, Pro Forma Information [Table Text Block]
Fair Value Disclosures [Abstract]
Statement [Table]
Statement [Table]
Measurement Basis [Axis]
Measurement Basis [Axis]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement [Member]
Carrying value
Reported Value Measurement [Member]
Estimated Fair Value
Estimate of Fair Value Measurement [Member]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Nonrecurring
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Hierarchy [Axis]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy [Domain]
Fair Value Hierarchy and NAV [Domain]
Level 1
Fair Value, Inputs, Level 1 [Member]
Level 2
Fair Value, Inputs, Level 2 [Member]
Level 3
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 1, 2 and 3 [Member]
Fair Value, Inputs, Level 1, 2 and 3 [Member]
Statement [Line Items]
Statement [Line Items]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Mortgages Held-for-sale, Fair Value Disclosure
Mortgages Held-for-sale, Fair Value Disclosure
Equity Securities without Readily Determinable Fair Value, Amount
Equity Securities without Readily Determinable Fair Value, Amount
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Investment Contracts With Fixed Maturity
Investment Contracts With Fixed Maturity, Fair Value Disclosure
Investment Contracts With Fixed Maturity, Fair Value Disclosure.
Investment Contracts Without A Fixed Maturity
Investment Contracts Without A Fixed Maturity, Fair Value Disclosure
Investment Contracts Without A Fixed Maturity, Fair Value Disclosure.
Long-term debt
Debt Instrument, Fair Value Disclosure
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Commitments and Contingencies Disclosure [Abstract]
Loss Contingencies [Table]
Loss Contingencies [Table]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Litigation Case [Axis]
Litigation Case [Axis]
Litigation Case [Domain]
Litigation Case [Domain]
Provider Proceedings [Member]
Provider Proceedings [Member]
Provider Proceedings [Member]
Litigation Status [Axis]
Litigation Status [Axis]
Litigation Status [Domain]
Litigation Status [Domain]
Loss Contingency Nature [Axis]
Loss Contingency Nature [Axis]
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Guarantor Obligations, Number of Leases
Guarantor Obligations, Number of Leases
Guarantor Obligations, Number of Leases
Loss Contingency, Number Of Locations With Subpoena For Documents
Loss Contingency, Number Of Locations With Subpoena For Documents
Loss Contingency, Number Of Locations With Subpoena For Documents
Loss Contingency, Damages Awarded, Value
Loss Contingency, Damages Awarded, Value
Loss Contingency, Audit Methodology Sample Size
Loss Contingency, Audit Methodology Sample Size
Loss Contingency, Audit Methodology Sample Size
Total cash, cash equivalents, and restricted cash
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Accounts receivable, net
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Disaggregation of revenue
Disaggregation of Revenue [Table Text Block]
Contracts with customers, assets and liabilities
Contract with Customer, Asset and Liability [Table Text Block]
Impact of new lease standard on balance sheet line items
New Accounting Pronouncements, Policy [Policy Text Block]
Segment Reporting [Abstract]
Restatement [Axis]
Restatement [Axis]
Restatement [Domain]
Restatement [Domain]
Previously Reported [Member]
Previously Reported [Member]
Restatement Adjustment [Member]
Restatement Adjustment [Member]
Cost of products sold
Cost of Goods and Services Sold
Benefit Costs
Policyholder Benefits and Claims Incurred, Net, Health
Operating expenses
Operating Expenses
Operating income
Operating Income (Loss)
Adjusted Operating Income (Loss)
Adjusted Operating Income (Loss)
Adjusted Operating Income (Loss)
Acquisition of Aetna
Business Combination Disclosure [Text Block]
Total Investments [Table]
Total Investments [Table]
Mortgage Loans on Real Estate, Credit Quality Indicator [Axis]
Mortgage Loans on Real Estate, Credit Quality Indicator [Axis]
Mortgage Loans on Real Estate, Credit Quality Indicator [Axis].
Mortgage Loans on Real Estate, Credit Quality Indicator [Domain]
Mortgage Loans on Real Estate, Credit Quality Indicator [Domain]
Mortgage Loans on Real Estate, Credit Quality Indicator [Domain].
Debt And Equity Securities Available For Sale [Member]
Debt And Equity Securities Available For Sale [Member]
Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities. Such securities are reported at fair value; unrealized gains and losses related to Available-for-sale securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income)
Mortgage Loans [Member]
Mortgage Loans [Member]
Represents mortgage loans for the reporting period measured at carrying value. We carry the value of our mortgage loan investments on our balance sheet at the unpaid principal balance, net of impairment reserves.
Other Investments [Member]
Other Investments [Member]
Total Investments [Line Items]
Total Investments [Line Items]
Current investments
Short-term Investments
Long-term investments
Long-term Investments
Total investments
Investments
Available-for-sale Securities, Gross Unrealized Loss
Pro Forma Financials [Abstract]
Pro Forma Financials [Abstract]
Total revenues
Business Acquisition, Pro Forma Revenue
Net Income attributable to CVS Health
Business Acquisition, Pro Forma Net Income (Loss)
Net income per share attributable to CVS Health
Net income per share attributable to CVS Health [Abstract]
Net income per share attributable to CVS Health [Abstract]
Basic
Business Acquisition, Pro Forma Earnings Per Share, Basic
Diluted
Business Acquisition, Pro Forma Earnings Per Share, Diluted
Total investments
Total Investments [Table Text Block]
This item includes total investments, both current and long-term.
Debt and equity securities available for sale
Available-for-sale Securities [Table Text Block]
Fair value of debt securities by contractual maturity
Investments Classified by Contractual Maturity Date [Table Text Block]
Debt and Equity Securities in an Unrealized Capital Loss Position
Schedule of Unrealized Loss on Investments [Table Text Block]
Maturity dates for debt securities
Maturity Dates For Debt Securities [Table Text Block]
This item includes the maturity dates for debt securities in an unrealized loss position.
Activity in mortgage loan portfolio
Activity in mortgage loan portfolio [Table Text Block]
Table representing activities in mortgage loan portfolio during the period.
Mortgage loan internal credit rating
Schedule Of Mortgage Loan Internal Credit Ratings [Table Text Block]
Schedule detailing credit quality information related to financing receivables by credit quality indicator and by class of financing receivable.
Net Investment Income
Investment Income [Table Text Block]
Proceeds and related gross realized capital gains and losses from the sale of debt securities
Proceeds And Related Gross Realized Capital Gains Losses From Sale Of Debt Securities [Table Text Block]
This item includes proceeds from the sale of debt securities and the related gross realized capital gains and losses, excluding amounts related to experience-rated and discontinued products.
Schedule of Investment Income, Reported Amounts, by Category [Table]
Investment Income [Table]
Investment Type [Axis]
Investment Type [Axis]
Investment income, categories
Investments [Domain]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Net Investment Income [Line Items]
Gross investment income
Investment Income, Interest and Dividend
Investment expenses
Investment Income, Investment Expense
Investment Income, Excluding Capital Gains or Losses
Investment Income, Excluding Capital Gains or Losses
Investment Income, Excluding Capital Gains or Losses
Realized Investment Gains (Losses)
Realized Investment Gains (Losses)
Net investment income
Investment Income, Net
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net
Leases [Abstract]
Lease, Cost [Abstract]
Lease, Cost [Abstract]
Operating Lease, Cost
Operating Lease, Cost
Finance Lease, Right-of-Use Asset, Amortization
Finance Lease, Right-of-Use Asset, Amortization
Finance Lease, Interest Expense
Finance Lease, Interest Expense
Finance Lease Cost
Finance Lease Cost
Finance Lease Cost
Short-term Lease, Cost
Short-term Lease, Cost
Variable Lease, Cost
Variable Lease, Cost
Sublease Income
Sublease Income
Lease, Cost
Lease, Cost
Statement of Financial Position [Abstract]
Assets:
Assets [Abstract]
Assets:
Assets, Current [Abstract]
Investments
Total accounts receivable, net
Accounts Receivable, Net, Current
Inventories
Inventory, Net
Total current assets
Goodwill
Goodwill
Separate account assets
Separate Account Assets
Total assets
Liabilities and shareholders' equity:
Liabilities and Equity [Abstract]
Liabilities:
Liabilities, Current [Abstract]
Accounts payable
Accounts Payable, Trade, Current
Pharmacy claims and discounts payable
Pharmacy Claims and Discounts Payable, Current
Pharmacy Claims and Discounts Payable, Current
Health care costs payable
Liability for Unpaid Claims and Claims Adjustment Expense, Net
Other Policyholder Funds
Other Policyholder Funds
Other insurance liabilities
Other Insurance Liabilities, Current
Other Insurance Liabilities, Current
Short-term debt
Short-term Debt
Total current liabilities
Separate accounts liabilities
Separate Accounts, Liability
Other long-term insurance liabilities
Other Insurance Liabilities, Noncurrent
Other Insurance Liabilities, Noncurrent
Total liabilities
CVS Health shareholders' equity:
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value $0.01: 0.1 shares authorized; none issued or outstanding
Preferred Stock, Value, Issued
Common stock, par value $0.01: 3,200 shares authorized; 1,722 shares issued and 1,298 shares outstanding at March 31, 2019 and 1,720 shares issued and 1,295 shares outstanding at December 31, 2018
Common Stocks, Including Additional Paid in Capital
Treasury stock, at cost: 424 shares at March 31, 2019 and 425 shares at December 31, 2018
Treasury Stock, Value
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss), Net of Tax
Total CVS health shareholders' equity
Noncontrolling interests
Stockholders' Equity Attributable to Noncontrolling Interest
Total shareholders' equity
Total liabilities and equity
Liabilities and Equity
Other Comprehensive (Loss) Income
Comprehensive Income (Loss) Note [Text Block]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Statement of Stockholders' Equity [Abstract]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Treasury Stock [Member]
Treasury Stock [Member]
Common Stock Including Additional Paid in Capital [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Member]
CVS Health Shareholders' Equity
Parent [Member]
Noncontrolling Interest [Member]
Noncontrolling Interest [Member]
Shareholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, balance at beginning of period (in shares)
Common Stock, Shares, Outstanding
Treasury shares, balance at beginning of period (in shares)
Shares, Outstanding
Balance at beginning of period
Total equity at beginning of period
Adoption of new accounting standard
Cumulative Effect of New Accounting Principle in Period of Adoption
Net income attributable to CVS Health
Net Income (Loss) Attributable to Parent
Net income attributable to noncontrolling interest
Net Income (Loss) Attributable to Noncontrolling Interest
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Other Comprehensive Income
Other Comprehensive Income (Loss), Net of Tax
Stockholders' Equity Attributable to Noncontrolling Interest at beginning of period
Stock option activity, stock awards and other (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Stock option activity, stock awards and other
Stock Issued During Period, Value, Stock Options Exercised
Treasury Stock, Shares, Acquired, Cost Method, Net Of ESPP Issuance
Treasury Stock, Shares, Acquired, Cost Method, Net Of ESPP Issuance
Treasury Stock, Shares, Acquired, Cost Method, Net Of ESPP Issuance
Treasury Stock, Value, Acquired, Cost Method, Net Of ESPP Issuance
Treasury Stock, Value, Acquired, Cost Method, Net Of ESPP Issuance
Treasury Stock, Value, Acquired, Cost Method, Net Of ESPP Issuance
Dividends declared
Dividends, Common Stock
Other decreases in noncontrolling interest
Noncontrolling interest, Other Period Increase (Decrease)
Noncontrolling interest, Other Period Increase (Decrease)
Common stock, balance at end of period (in shares)
Treasury shares, balance at end of period (in shares)
Balance at end of period
Stockholders' Equity Attributable to Noncontrolling Interest at end of period
Total equity at end of period
Consolidated Statements of Comprehensive Income [Abstract]
Consolidated Statements of Comprehensive Income [Abstract]
Other Comprehensive Income Location [Axis]
Other Comprehensive Income Location [Axis]
Other Comprehensive Income Location [Domain]
Other Comprehensive Income Location [Domain]
Net unrealized investment gains
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
Foreign currency translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Net cash flow hedges
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax
Other Comprehensive Income
Comprehensive Income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive Income attributable to CVS Health
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Health Care and Other Insurance Liabilities [Abstract]
Health Care and Other Insurance Liabilities [Abstract]
Short-Duration Insurance and Deposit Contracts [Text Block]
Short-Duration Insurance and Deposit Contracts [Text Block]
Balance Sheet (Paranthetical) [Abstract]
Balance Sheet (Paranthetical) [Abstract]
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Preferred stock, shares authorized (in shares)
Preferred Stock, Shares Authorized
Preferred stock, shares issued (in shares)
Preferred Stock, Shares Issued
Preferred stock, shares outstanding (in shares)
Preferred Stock, Shares Outstanding
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Common stock, shares issued (in shares)
Common Stock, Shares, Issued
Common stock, shares outstanding (in shares)
Treasury stock (in shares)
Treasury Stock, Shares
Fair Value Disclosures [Text Block]
Fair Value Disclosures [Text Block]
Leases of Lessee Disclosure [Text Block]
Leases of Lessee Disclosure [Text Block]
Proceeds On Sales
Proceeds from Sale of Debt Securities, Available-for-sale
Gross Realized Capital Gains
Available-for-sale Securities, Gross Realized Gains
Gross Realized Capital Losses
Available-for-sale Securities, Gross Realized Losses
Number of Under Performing Stores
Number of Under Performing Stores
Number of Under Performing Stores
Net Revenues, Retail CoPayments
Net Revenues, Retail CoPayments
Net Revenues, Retail CoPayments
Amortization of intangible assets
Amortization of Intangible Assets
Acquisition-related transaction and integration costs
Business Combination, Integration Related Costs
Store Rationalization Charges
Store Rationalization Charges
Store Rationalization Charges
Loss on divestiture of subsidiary
Gain (Loss) on Disposition of Business
Interest income on financing for the Aetna Acquisition
Interest Income (Expense), Net
Accounting Policies - Narrative [Abstract]
Accounting Policies - Narrative [Abstract]
Number of Pharmacy Plan Members
Number of Pharmacy Plan Members
Number of Pharmacy Plan Members
Number of Patients Served per Year
Number of Patients Served per Year
Number of Patients Served per Year
Number of People Served through Health Insurance Products and Related Services
Number of People Served through Health Insurance Products and Related Services
Number of People Served through Health Insurance Products and Related Services
Number of Reportable Segments
Number of Reportable Segments
Related Party Transaction, Expenses from Transactions with Related Party
Related Party Transaction, Expenses from Transactions with Related Party
Number of States in which Entity Operates
Number of States in which Entity Operates
Related Party Transaction, Other Revenues from Transactions with Related Party
Related Party Transaction, Other Revenues from Transactions with Related Party
Trade receivables
Contract with Customer, Asset, Net, Current
Contract liabilities (included in accrued expenses)
Contract with Customer, Liability, Current
Change in Contract with Customer, Liability [Abstract]
Change in Contract with Customer, Liability [Abstract]
Contract liabilities (included in accrued expenses) beginning balance
Loyalty program earnings and gift card issuances
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress
Redemption and breakage
Contract with Customer Liaiblity Redemption and Breakage
Contract with Customer Liaiblity Redemption and Breakage
Contract liabilities (included in accrued expenses) ending balance
Finance Lease Liabilities, Payments, Due [Abstract]
Finance Lease Liabilities, Payments, Due [Abstract]
Finance Lease, Liability, Payments, Remainder of Fiscal Year
Finance Lease, Liability, Payments, Remainder of Fiscal Year
Finance Lease, Liability, Payments, Due Year Two
Finance Lease, Liability, Payments, Due Year Two
Finance Lease, Liability, Payments, Due Year Three
Finance Lease, Liability, Payments, Due Year Three
Finance Lease, Liability, Payments, Due Year Four
Finance Lease, Liability, Payments, Due Year Four
Finance Lease, Liability, Payments, Due Year Five
Finance Lease, Liability, Payments, Due Year Five
Finance Lease, Liability, Payments, Due after Year Five
Finance Lease, Liability, Payments, Due after Year Five
Finance Lease, Liability, Payments, Due
Finance Lease, Liability, Payments, Due
Finance Lease, Liability, Undiscounted Excess Amount
Finance Lease, Liability, Undiscounted Excess Amount
Finance Lease, Liability
Finance Lease, Liability
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year
Lessee, Operating Lease, Liability, Payments, Due Year Two
Lessee, Operating Lease, Liability, Payments, Due Year Two
Lessee, Operating Lease, Liability, Payments, Due Year Three
Lessee, Operating Lease, Liability, Payments, Due Year Three
Lessee, Operating Lease, Liability, Payments, Due Year Four
Lessee, Operating Lease, Liability, Payments, Due Year Four
Lessee, Operating Lease, Liability, Payments, Due Year Five
Lessee, Operating Lease, Liability, Payments, Due Year Five
Lessee, Operating Lease, Liability, Payments, Due after Year Five
Lessee, Operating Lease, Liability, Payments, Due after Year Five
Lessee, Operating Lease, Liability, Payments, Due
Lessee, Operating Lease, Liability, Payments, Due
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Operating Lease, Liability
Operating Lease, Liability
Lessee, Liability, Payments, Remainder of Fiscal Year
Lessee, Liability, Payments, Remainder of Fiscal Year
Lessee, Liability, Payments, Remainder of Fiscal Year
Lessee, Liability, Payments, Due Year Two
Lessee, Liability, Payments, Due Year Two
Lessee, Liability, Payments, Due Year Two
Lessee, Liability, Payments, Due Year Three
Lessee, Liability, Payments, Due Year Three
Lessee, Liability, Payments, Due Year Three
Lessee, Liability, Payments, Due Year Four
Lessee, Liability, Payments, Due Year Four
Lessee, Liability, Payments, Due Year Four
Lessee, Liability, Payments, Due Year Five
Lessee, Liability, Payments, Due Year Five
Lessee, Liability, Payments, Due Year Five
Lessee, Liability, Payments, Due After Year Five
Lessee, Liability, Payments, Due After Year Five
Lessee, Liability, Payments, Due After Year Five
Lessee, Liability, Payments, Due
Lessee, Liability, Payments, Due
Lessee, Liability, Payments, Due
Lessee, Liability, Undiscounted Excess Amount
Lessee, Liability, Undiscounted Excess Amount
Lessee, Liability, Undiscounted Excess Amount
Lease, Liability
Lease, Liability
Lease, Liability
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals
Operating And Capital Leases, Amount Due In Excess Of Remaining Estimated Economic Life
Operating And Capital Leases, Amount Due In Excess Of Remaining Estimated Economic Life
Operating And Capital Leases, Amount Due In Excess Of Remaining Estimated Economic Life
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]
Summarized financial information of segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Reconciliation of Operating Earnings to Net Income
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Reinsurance Disclosures [Abstract]
Reinsurance
Reinsurance [Text Block]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Numerator for earnings per share calculation [Abstract]
Numerator for earnings per share calculation [Abstract]
Numerator for earnings per share calculation [Abstract]
Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted
Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Denominator for earnings per share calculation [Abstract]
Denominator for earnings per share calculation [Abstract]
Denominator for earnings per share calculation [Abstract]
Weighted Average Shares Outstanding, Basic
Weighted Average Number of Shares Outstanding, Basic
Dilutive effect of outstanding stock-based compensation awards (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Weighted average shares used to compute diluted EPS (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Earnings Per Share, Basic and Diluted [Abstract]
Earnings Per Share, Basic and Diluted [Abstract]
Basic EPS (in dollars per share)
Earnings Per Share, Basic
Diluted EPS (in dollars per share)
Earnings Per Share, Diluted
Stockholders' Equity Note Disclosure [Text Block]
Stockholders' Equity Note Disclosure [Text Block]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses
Mortgage Loans on Real Estate [Table]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table]
Real Estate, Type of Property [Axis]
Real Estate, Type of Property [Axis]
Real Estate [Domain]
Real Estate [Domain]
Commercial Real Estate [Member]
Commercial Real Estate [Member]
New Mortgage Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, New Mortgage Loan
Mortgage Loans Fully Repaid
Mortgage Loans on Real Estate, Loans Fully Repaid
Pertains to amount of mortgage loans fully repaid.
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans Foreclosed
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]
Financial Instruments [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Category [Domain]
Equity Securities [Member]
Common/Collective Trusts [Member]
Common and Collective Trusts [Member]
The total amount of Common/Collective Trusts held by the company, primarily related to investment funds otherwise known as underlying funds.
Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Member]
Fair Value, Measurements, Recurring [Member]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Comprehensive Income Loss [Table]
Comprehensive Income Loss [Table]
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Net Unrealized Gains (Losses) Previously Impaired Securities [Member]
Net Unrealized Gains (Losses) Previously Impaired Securities [Member]
Represents the non-credit-related component of previously impaired debt securities that we do not intend to sell and subsequent appreciation in the fair value of securities that we intend to sell.
Foreign Currency and Derivative Gain (Loss) [Member]
Foreign Currency Gain (Loss) [Member]
Pension and OPEB Plan [Member]
Pension and OPEB Plan [Member]
Pension and OPEB Plan [Member]
Comprehensive Income Loss [Line Items]
Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax
Cumulative Effect of New Accounting Principle in Period of Adoption, before tax
Cumulative Effect of New Accounting Principle in Period of Adoption, before tax
Cumulative Effect of New Accounting Principle in Period of Adoption, before tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Other Comprehensive Income
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 months, net
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net
Income Statement [Abstract]
Product
Product [Member]
Service
Service [Member]
Revenues:
Revenues [Abstract]
Net investment income
Total revenues
Operating costs:
Benefits, Losses and Expenses [Abstract]
Benefit costs
Total operating cost
Costs and Expenses
Operating income
Interest expense
Interest Expense
Other expense (income)
Other Nonoperating Income (Expense)
Income before income taxes
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Income tax provision
Income Tax Expense (Benefit)
Net income
Net income attributable to CVS Health
Basic
Diluted
Weighted average shares outstanding
Weighted average shares outstanding [Abstract]
Weighted average shares outstanding [Abstract]
Weighted Average Shares Outstanding, Diluted
Dividends declared per share
Common Stock, Dividends, Per Share, Declared
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Earnings Per Common Share
Earnings Per Share [Text Block]
Statement of Cash Flows [Abstract]
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Cash receipts from customers
Proceeds from Customers
Cash paid for inventory and prescriptions dispensed by retail network pharmacies
Payments for Inventory and Prescriptions Dispensed by Retail Network Pharmacies
Payments for Inventory and Prescriptions Dispensed by Retail Network Pharmacies
Insurance benefits paid
Payments for Insurance Benefits
Payments for Insurance Benefits
Cash paid to other suppliers and employees
Payments to Suppliers and Employees
Interest and investment income received
Proceeds from Interest and Dividends Received
Interest Paid
Interest Paid, Excluding Capitalized Interest, Operating Activities
Income taxes paid
Income Taxes Paid, Net
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Cash flows from investing activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Proceeds from sales and maturities of investments
Proceeds from Sale and Maturity of Marketable Securities
Purchase of investments
Payments to Acquire Investments
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Acquisitions (net of cash acquired)
Payments to Acquire Businesses, Net of Cash Acquired
Proceeds from sale of subsidiary
Proceeds from Divestiture of Businesses, Net of Cash Divested
Other
Payments for (Proceeds from) Other Investing Activities
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Cash flows from financing activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Net borrowings (repayments) of short-term debt
Proceeds from (Repayments of) Short-term Debt
Proceeds from issuance of long-term debt
Proceeds from Issuance of Long-term Debt
Repayments of long-term debt
Repayments of Long-term Debt
Derivative settlements
Payments for (Proceeds from) Derivative Instrument, Financing Activities
Dividends paid
Payments of Dividends
Proceeds from exercise of stock options
Proceeds from Stock Options Exercised
Payments for taxes related to net share settlement of equity awards
Payments Related to Tax Withholding for Share-based Compensation
Other
Proceeds from (Payments for) Other Financing Activities
Net cash provided by financing activities
Net Cash Provided by (Used in) Financing Activities
Cash and cash equivalents at the beginning of the period
Cash and cash equivalents at the end of the period
Reconciliation of net income to net cash provided by operating activities:
Supplemental Cash Flow Information [Abstract]
Adjustments required to reconcile net income to net cash provided by operating activities: [Abstract]
Adjustments required to reconcile net income to net cash provided by operating activities: [Abstract]
Adjustments required to reconcile net income to net cash provided by operating activities: [Abstract]
Depreciation and amortization
Depreciation, Depletion and Amortization
Stock-based compensation
Share-based Compensation
Deferred income taxes and other noncash items
Deferred income taxes and other noncash items
Amount of deferred income tax expense (benefit) and income tax credits and amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.
Change in operating assets and liabilities, net of effects from acquisitions: [Abstract]
Change in operating assets and liabilities, net of effects from acquisitions: [Abstract]
Change in operating assets and liabilities, net of effects from acquisitions: [Abstract]
Accounts receivable, net
Increase (Decrease) in Accounts Receivable
Inventories
Increase (Decrease) in Inventories
Other assets
Increase (Decrease) in Other Operating Assets
Accounts payable and pharmacy claims and discounts payable
Increase (Decrease) in Accounts Payable
Health care costs payable and other insurance liabilities
Increase (Decrease) in Insurance Liabilities
Other liabilities
Increase (Decrease) in Other Operating Liabilities
Net cash provided by operating activities
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Segment Information
Segment Reporting Disclosure [Text Block]
Statement of Stockholders' Equity (Parentheticals) [Abstract]
Statement of Stockholders' Equity (Parentheticals) [Abstract]
Report Date [Axis]
Report Date [Axis]
Financial Statement Filing Date [Domain]
Financial Statement Filing Date [Domain]
Adjustments for Change in Accounting Principle [Axis]
Adjustments for Change in Accounting Principle [Axis]
Adjustments for Change in Accounting Principle [Domain]
Adjustments for Change in Accounting Principle [Domain]
Adjustments for Error Corrections [Axis]
Adjustments for Error Corrections [Axis]
Adjustments for Error Correction [Domain]
Adjustments for Error Correction [Domain]
Treasury Stock, Shares, Held in Trust
Treasury Stock, Shares, Held in Trust
Treasury Stock, Shares, Held in Trust
Treasury Stock, Value, Shares Held In Trust
Treasury Stock, Value, Shares Held In Trust
Treasury Stock, Value, Shares Held In Trust
Common Stock, Value, Issued
Common Stock, Value, Issued
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Fair Value, by Balance Sheet Grouping [Table Text Block]
Fair Value, by Balance Sheet Grouping [Table Text Block]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table Text Block]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table Text Block]
Lease, Cost [Table Text Block]
Lease, Cost [Table Text Block]
Lessee, Lease [Table Text Block]
Lessee, Lease [Table Text Block]
Lessee, Lease [Table Text Block]
Lease Liability Maturity [Table Text Block]
Lease Liability Maturity [Table Text Block]
[Table Text Block] for Lease Liability Maturity [Table]
Recurring
US Government Agencies Debt Securities [Member]
US States and Political Subdivisions Debt Securities [Member]
Debt Security, Corporate, US [Member]
Debt Security, Corporate, Non-US [Member]
Redeemable Preferred Stock [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure
Investments
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Fair Value of Assets Acquired and Liabilities Assumed [Abstract]
Fair Value of Assets Acquired and Liabilities Assumed [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value of Assets Acquired and Liabilities Assumed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents
Accounts Receivable
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables
Other current assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other
Investments (current and long-term)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Investments
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Investments
Intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill
Other long-term assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets
Total assets acquired
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets
Health care costs payable
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Liability for Unpaid Claims and Claims Adjustment Expense, Net
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Liability for Unpaid Claims and Claims Adjustment Expense, Net
Other current liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other
Debt (current and long-term)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Debt
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Debt
Deferred income taxes
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities
Other long-term liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other
Total liabilities assumed
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities
Noncontrolling interests
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value
Total consideration transferred
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Retail stores, mail order facilities and certain distribution centers and corp offices
Building [Member]
Equipment and other assets
Equipment [Member]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Lessee, Operating Lease, Term of Contract
Lessee, Operating Lease, Term of Contract
Supplemental cash flow information related to leases [Abstract]
Supplemental cash flow information related to leases [Abstract]
Supplemental cash flow information related to leases [Abstract]
Operating Lease, Payments
Operating Lease, Payments
Finance Lease, Interest Payment on Liability
Finance Lease, Interest Payment on Liability
Finance Lease, Principal Payments
Finance Lease, Principal Payments
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Supplemental balance sheet information related to leases [Abstract]
Supplemental balance sheet information related to leases [Abstract]
Supplemental balance sheet information related to leases [Abstract]
Operating Lease, Liability
Finance Lease, Right-of-Use Asset
Finance Lease, Right-of-Use Asset
Finance Lease, Liability, Current
Finance Lease, Liability, Current
Finance Lease, Liability, Noncurrent
Finance Lease, Liability, Noncurrent
Finance Lease, Liability
Operating Lease, Weighted Average Remaining Lease Term
Operating Lease, Weighted Average Remaining Lease Term
Finance Lease, Weighted Average Remaining Lease Term
Finance Lease, Weighted Average Remaining Lease Term
Operating Lease, Weighted Average Discount Rate, Percent
Operating Lease, Weighted Average Discount Rate, Percent
Finance Lease, Weighted Average Discount Rate, Percent
Finance Lease, Weighted Average Discount Rate, Percent
Sale Leaseback Transaction, Net Proceeds, Investing Activities
Sale Leaseback Transaction, Net Proceeds, Investing Activities
Investments, Debt and Equity Securities [Abstract]
Category 1 [Member]
Category 1 [Member]
Mortgage Loan Credit Quality Indicator - Category 1 [Member].
Category 2 to 4 [Member]
Category 2 to 4 [Member]
Mortgage Loan Credit Quality Indicator - Category 2 to 4 [Member].
Categories 5 and 6 [Member]
Categories 5 and 6 [Member]
Mortgage loan credit quality indicator - Categories 5 and 6
Category 7 [Member]
Category 7 [Member]
Mortgage loan credit quality indicator - Category 7
Mortgage loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate
Summary of Significant Accounting Policies
Significant Accounting Policies [Text Block]
Stock Repurchase Program, Authorized Amount
Stock Repurchase Program, Authorized Amount
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Stock Repurchased During Period, Shares
Stock Repurchased During Period, Shares
Health care costs payable, beginning of the period
Reinsurance recoverables
Reinsurance Recoverables on Unpaid Losses, Gross
Health care costs payable, beginning of the period, net
Short-Duration Liability for Unpaid Claims, Health Care
The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.
Add Components Of Incurred Health Care Costs [Abstract]
Add Components Of Incurred Health Care Costs [Abstract]
Add Components Of Incurred Health Care Costs [Abstract]
Current year incurred health care costs
Current Year Claims and Claims Adjustment Expense
Prior year incurred health care costs
Prior Year Claims and Claims Adjustment Expense
Policyholder Benefits and Claims Incurred, Net, Health
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims
Less Claims Paid [Abstract]
Less Claims Paid [Abstract]
Less Claims Paid [Abstract]
Current year claims paid
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year
Prior year claims paid
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years
Total claims paid
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid
Premium Deficiency Reserves
Premium Deficiency Reserve Liability
The amount of reserves related to expected future claims, including maintenance costs (for example, direct costs such as claim processing costs), in excess of existing reserves plus anticipated future premiums and reinsurance recoveries.
Health care costs payable, end of the period, net
Reinsurance recoverables
Health care costs payable, end of the period
Benefit costs recorded in other insurance liabilities
SEC Schedule, 12-18, Supplemental Information, Property, Casualty Insurance Underwriters, Current Year Claim and Claim Adjustment Expense
Incurred but Not Reported (IBNR) Claims Liability, Net
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net
Vendor and manufacturer receivables
Vendor and Manufacturer Receivables
Vendor and Manufacturer Receivables
Premiums receivables
Premiums Receivable, Net
Other receivables
Other Receivables, Net, Current