XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.26.1

Debt - Debt Repurchase Program (Details) - USD ($) $ in Millions | Mar. 31, 2026 | Feb. 28, 2026 | Jun. 30, 2022
--- | --- | --- | ---
Line of Credit Facility [Line Items] |  |  |
Debt repurchase program, authorized amount |  |  | $ 1,000
Debt repurchase program increase authorized amount |  | $ 1,000 |
Debt repurchase program remaining authorized to be repurchased, amount | $ 484 | $ 1,484 |
$2,500 million 4.25% Senior Notes due December 15, 2027 | Senior Notes |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument, repurchased face amount | $ 1,029 |  |

X
- Definition Debt Repurchase Program, Authorized Amount + References No definition available. + Details
Name: | cnc_DebtRepurchaseProgramAuthorizedAmount
Namespace Prefix: | cnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Repurchase Program Increase Authorized Amount + References No definition available. + Details
Name: | cnc_DebtRepurchaseProgramIncreaseAuthorizedAmount
Namespace Prefix: | cnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Repurchase Program, Remaining Amount Authorized To Be Repurchased, Amount + References No definition available. + Details
Name: | cnc_DebtRepurchaseProgramRemainingAmountAuthorizedToBeRepurchasedAmount
Namespace Prefix: | cnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentRepurchasedFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-6 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-6 + Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cnc_A2500Million425SeniorNotesDueDecember2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |