|**Employee Retirement Benefits**                                   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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|**Compensation and Retirement Disclosure [Abstract]**              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Employee Retirement Benefits                                       | Employee Retirement BenefitsWe sponsor a qualified defined benefit pension plan. During 2008, we changed the form of retirement benefit we offer some associates to a company match on contributions to a 401(k) plan from the defined benefit pension plan. We froze entry into the pension plan for new associates as of June 30, 2008, and only participants40 yearsof age or older as of August 31, 2008, could elect to continue to participate. For participants remaining in the pension plan, we continue to contribute to fund future benefit obligations. Benefits for the defined benefit pension plan are based on years of credited service and compensation level. Contributions are based on the prescribed method defined in the Pension Protection Act. Our pension expense is based on certain actuarial assumptions and also is composed of several components that are determined using the projected unit credit actuarial cost method. During the fourth quarters of 2012 and 2011, we offered limited opportunities for distribution of vested balances to terminated participants in the qualified pension plan. The qualified plan was amended to allow for distribution of vested balances to terminated participants on an ongoing basis.We also sponsor a defined contribution plan (401(k) plan). Matching contributions totaled$10 million,$9 millionand$8 millionduring the years 2013, 2012 and 2011, respectively. Associates who are not accruing benefits under the pension plan are eligible to receive the company match of up to6 percentof cash compensation. We also pay all operating expenses for the 401(k) plan. Participants vest in the company match for the 401(k) plan afterthreeyears of eligible service.We maintain a supplemental executive retirement plan (SERP) with a benefit obligation of$9 millionat bothyear-end 2013 and 2012, which are included in the obligation and expense amounts. The company also makes available to a select group of associates the CFC Top Hat Savings Plan, a nonqualified deferred compensation plan.Defined Benefit Pension Plan AssumptionsWe evaluate our pension plan assumptions annually and update them as necessary. This is a summary of the weighted-average assumptions used to determine our benefit obligations at December 31 for the plans:Qualified Pension PlanSERP2013201220132012Discount rate5.15%4.20%4.80%3.95%Rate of compensation increase2.75-3.252.75-3.252.75-3.252.75-3.25To determine the discount rate for each plan, a hypothetical diversified portfolio of actual domestic Aa rated bonds was chosen to provide payments approximately matching the plan’s expected benefit payments. A single interest rate for each plan was determined based on the anticipated yield of the constructed portfolio. Based on this analysis, we increased the rate from the prior year by0.95percentage points for the qualified pension plan and by0.85percentage points for the SERP due to market interest rate conditions at year-end 2013. Compensation increase assumptions reflect anticipated rates of inflation, real return on wage growth and merit and promotional increases.This is a summary of the weighted-average assumptions used to determine our net expense for the plans:Qualified Pension PlanSERP201320122011201320122011Discount rate4.20%5.10%5.85%3.95%4.75%5.55%Expected return on plan assets7.507.507.50n/an/an/aRate of compensation increase2.75-3.253.50-5.503.50-5.502.75-3.253.50-5.503.50-5.50The discount rate was decreased by0.90percentage points for the qualified pension plan and0.80percentage points for the SERP due to market interest rate conditions at the beginning of 2013. The discount rate assumptions for our benefit obligation generally track with high grade corporate bond yields chosen in our hypothetical portfolio, and yearly adjustments reflect any changes to those bond yields. We believe the expected return on plan assets is representative of the expected long-term rate of return on these assets which is consistent with 2013 expectations of interest rates and based partially on the fact that the plan’s common stock holdings pay dividends. We believe this rate is representative of the expected long-term rate of return on these plan assets. We review historical actual return on plan assets when determining our expected long-term rate of return. Total portfolio return for 2013 was24.0percent.  Our compensation increase assumptions in 2013 reflect anticipated rates of inflation, real return on wage growth and merit and promotional increases.Benefit obligation activity using an actuarial measurement date for our qualified plan and SERP at December 31 follows:(In millions)At December 31,20132012Change in projected benefit obligation:Benefit obligation, January 1$320$281Service cost1312Interest cost1314Actuarial (gain) loss(34)28Benefits paid(28)(15)Projected benefit obligation, December 31$284$320Accumulated benefit obligation$257$282Change in plan assets:Fair value of plan assets, January 1$238$216Actual return on plan assets5523Employer contribution1514Benefits paid(28)(15)Fair value of plan assets, December 31$280$238Funded status, December 31$(4)$(82)A reconciliation follows of the funded status for our qualified plan and SERP at the end of the measurement period to the amounts recognized in the consolidated balance sheets at December 31:(In millions)At December 31,20132012Pension amounts recognized in the consolidated balance sheets:Other assets$4$—Other liabilities(8)(82)Net amount recognized$(4)$(82)Amounts recognized in accumulated other comprehensive income:Net actuarial loss$18$100Prior service cost—1Total$18$101The change in the amount recognized in other comprehensive income is largely due to the increase in discount rate and corresponding increases in assumed lump sum rates.Below are the components of our net periodic benefit cost, as well as other changes in plan assets and benefit obligations recognized in other comprehensive income for our qualified plan and SERP at December 31:(In millions)Years ended December 31,201320122011Net periodic benefit cost:Service cost$13$12$11Interest cost131414Expected return on plan assets(17)(16)(16)Amortization of actuarial loss and prior service cost984Other200Net periodic benefit cost$20$18$13(In millions)Years ended December 31,201320122011Other changes in plan assets and benefit obligations recognized inother comprehensive income:Current year actuarial (gain) loss$(72)$20$30Amortization of actuarial loss(10)(6)(4)Amortization of prior service cost(1)(1)(1)Total recognized in other comprehensive (income) loss$(83)$13$25The total recognized in net periodic benefit cost and other comprehensive income was a net benefit of$63 millionfor the year ended December 31, 2013. We recognized$31 millionand$38 millionin net periodic benefit cost and other comprehensive income for the years ended December 31, 2012 and 2011, respectively. The change in the amount recognized in other comprehensive income from 2012 is largely due to increases in discount and lump sum rates and a greater than anticipated return on plan assets. The estimated costs to be amortized from AOCI into net periodic benefit cost over the next year for our plans are a$2 millionactuarial loss and less than$1 millionin prior service cost.Defined Benefit Pension Plan AssetsThe pension plan assets are managed to maximize total return over the long term while providing sufficient liquidity and current return to satisfy the cash flow requirements of the plan. The plan’s day-to-day investment decisions are managed by our internal investment department; however, overall investment strategies are discussed with our employee benefits committee.Excluding cash, during 2013 we held approximately80 percentof our pension portfolio in domestic common equity investments, which reflect the long-term time horizon of pension obligations. The remainder of the portfolio consists of12 percentin states, municipalities and taxable political subdivisions fixed-maturity investments and8 percentin domestic corporate fixed-maturity investments. Our common equity portfolio consists of22 percentin the financial sector,22 percentin the information technology sector,12 percentin the healthcare sector and12 percentin the industrial sector during 2013. No additional sectors accounted for10 percentor more of our common equity portfolio balance at year-end 2013. We had$19 millionof cash on hand at December 31, 2013, to coverend-of-year retirements. We have purchased more fixed maturities over the past several years to increase the duration of the fixed-maturity portfolio, diversify the types of credit risk and to better match our liability risks, which is consistent with our investment strategy. Our fixed-maturity bond portfolio is investment grade. The plan does not engage in derivative transactions.Investments in securities are valued based on the fair value hierarchy outlined in Note 3, Fair Value Measurements.  The pension plan did not have any liabilities carried at fair value during the years ended December 31, 2013 and 2012. There have been no transfers between Level 1 and Level 2 for the years ended December 31, 2013 and 2012. The following table shows the fair value hierarchy for those assets measured at fair value on a recurring basis at December 31, 2013 and 2012. Excluded from the table below is cash on hand of$19 millionand$3 millionat December 31, 2013 and 2012.(In millions)Quoted prices inactive markets foridentical assets (Level 1)Significant otherobservable inputs (Level 2)Significantunobservableinputs(Level 3)TotalAt December 31, 2013Fixed maturities, available for sale:States, municipalities and political subdivisions$—$32$—$32Corporate securities—21—21Total fixed maturities, available for sale—53—53Common equities, available for sale208——208Total$208$53$—$261At December 31, 2012Fixed maturities, available for sale:States, municipalities and political subdivisions$—$36$—$36Corporate securities—24—24Total fixed maturities, available for sale—60—60Common equities, available for sale175——175Total$175$60$—$235Our pension plan assets included467,113and567,113shares of the company’s common stock at December 31, 2013 and 2012, which had a fair value of$24 millionand$22 millionat December 31, 2013 and 2012, respectively. The defined benefit pension plan did not purchase any shares of our common stock during 2013 and 2012. During 2013, the pension plan sold100,000shares of the company’s common stock for a realized gain of$5 million. No shares of our common stock were sold during 2012. The company paid$1 millionin cash dividends on our common stock to the pension plan in both 2013 and 2012.We contributed$5 millionto our qualified plan during the first quarter of 2014 and expect to pay out$2 millionof benefit payments from the SERP during 2014. We expect to make the following benefit payments for our qualified plan and SERP, reflecting expected future service:(In millions)Years ended December 31,201420152016201720182019 - 2023Expected future benefit payments$23$25$28$26$24$136
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             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