v2.4.1.9

Condensed Financial Information Of Registrant (Condensed Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
Cash and cash equivalents | $ 1,610 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations | $ 1,038 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations | $ 844 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations | $ 574 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations
Short term investments | 177 us-gaap_ShortTermInvestments | 102 us-gaap_ShortTermInvestments |  |
Other current assets | 324 us-gaap_OtherAssetsCurrent | 217 us-gaap_OtherAssetsCurrent |  |
Total current assets | 3,034 us-gaap_AssetsCurrent | 1,800 us-gaap_AssetsCurrent |  |
Long term investments | 1,280 us-gaap_LongTermInvestments | 792 us-gaap_LongTermInvestments |  |
Other long term assets | 80 us-gaap_OtherAssetsNoncurrent | 60 us-gaap_OtherAssetsNoncurrent |  |
Total assets | 5,838 us-gaap_Assets | 3,529 us-gaap_Assets |  |
Current liabilities | 2,900 us-gaap_LiabilitiesCurrent | 1,559 us-gaap_LiabilitiesCurrent |  |
Long term debt | 888 us-gaap_LongTermDebtNoncurrent | 666 us-gaap_LongTermDebtNoncurrent |  |
Other long term liabilities | 158 us-gaap_OtherLiabilitiesNoncurrent | 60 us-gaap_OtherLiabilitiesNoncurrent |  |
Total liabilities | 3,947 us-gaap_Liabilities | 2,286 us-gaap_Liabilities |  |
Redeemable noncontrolling interest | 148 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount | 0 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |
Common stock, $.001 par value; authorized 200,000,000 shares; 124,274,864 issued and 118,433,416 outstanding at December 31, 2014, and 117,346,430 issued and 110,638,478 outstanding at December 31, 2013 | 0 us-gaap_CommonStockValue | 0 us-gaap_CommonStockValue |  |
Additional paid-in capital | 840 us-gaap_AdditionalPaidInCapitalCommonStock | 594 us-gaap_AdditionalPaidInCapitalCommonStock |  |
Retained earnings | 1,003 us-gaap_RetainedEarningsAccumulatedDeficit | 732 us-gaap_RetainedEarningsAccumulatedDeficit |  |
Treasury stock, at cost (5,841,448 and 6,707,952 shares, respectively) | (98)us-gaap_TreasuryStockValue | (89)us-gaap_TreasuryStockValue |  |
Total Centene stockholders’ equity | 1,744 us-gaap_StockholdersEquity | 1,234 us-gaap_StockholdersEquity |  |
Noncontrolling interest | (1)us-gaap_MinorityInterest | 9 us-gaap_MinorityInterest |  |
Total stockholders’ equity | 1,743 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 1,243 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 954 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 937 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total liabilities and stockholders’ equity | 5,838 us-gaap_LiabilitiesAndStockholdersEquity | 3,529 us-gaap_LiabilitiesAndStockholdersEquity |  |
Parent Company [Member] |  |  |  |
Income Taxes Receivable | 359 us-gaap_IncomeTaxReceivable / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 113 us-gaap_IncomeTaxReceivable / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Cash and cash equivalents | 3 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 3 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 22 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 29 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Short term investments | 8 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 6 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other current assets | 378 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 125 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total current assets | 389 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 134 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Long term investments | 10 us-gaap_LongTermInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 8 us-gaap_LongTermInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Investment in subsidiaries | 2,296 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,667 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other long term assets | 38 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 32 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total assets | 2,733 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,841 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Current liabilities | 24 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Long term debt | 815 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 591 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other long term liabilities | 3 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities | 842 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 598 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Redeemable noncontrolling interest | 148 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Common stock, $.001 par value; authorized 200,000,000 shares; 124,274,864 issued and 118,433,416 outstanding at December 31, 2014, and 117,346,430 issued and 110,638,478 outstanding at December 31, 2013 | 0 us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Additional paid-in capital | 840 us-gaap_AdditionalPaidInCapitalCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 594 us-gaap_AdditionalPaidInCapitalCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Unrealized gain on investments, net of tax | (1)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (3)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Retained earnings | 1,003 us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 732 us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Treasury stock, at cost (5,841,448 and 6,707,952 shares, respectively) | (98)us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (89)us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total Centene stockholders’ equity | 1,744 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,234 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Noncontrolling interest | (1)us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 9 us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total stockholders’ equity | 1,743 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,243 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities and stockholders’ equity | $ 2,733 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 1,841 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |

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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph g -Article 7 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568447-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568740-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4590271-111686 + Details
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- Definition The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 + Details
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