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Medical Claims Liability (Schedule Of Change In Medical Claims Liability) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] | |||
| Balance, January 1, | $ 1,112us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense | $ 815us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense | $ 519us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense |
| Incurred related to: Current year | 12,820us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense | 9,073us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense | 6,836us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense |
| Incurred related to: Prior years | (142)us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense | (78)us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense | (55)us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense |
| Total incurred | 12,678us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1 | 8,995us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1 | 6,781us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1 |
| Paid related to: Current year | 11,122us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1 | 7,975us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1 | 6,025us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1 |
| Paid related to: Prior years | 945us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1 | 723us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1 | 460us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1 |
| Total paid | 12,067us-gaap_PaymentsForLossesAndLossAdjustmentExpense | 8,698us-gaap_PaymentsForLossesAndLossAdjustmentExpense | 6,485us-gaap_PaymentsForLossesAndLossAdjustmentExpense |
| Balance, December 31, | 1,723us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense | 1,112us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense | 815us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense |
| Reinsurance recoverables | $ 22us-gaap_ReinsuranceRecoverables | $ 10us-gaap_ReinsuranceRecoverables | |
| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of payments to settle claims incurred in the current period and related claims settlement costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of payments to settle claims incurred in prior periods and related claims settlement costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of expense for claims incurred and costs incurred in the claim settlement process. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of payments to settle insured claims and pay costs incurred in the claims settlement process. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after valuation allowance recoverable including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of expense for claims incurred in the current reporting period and related claims settlement costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of expense for claims incurred in prior reporting periods and related claims settlement costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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