Recent Accounting Pronouncements	9 Months Ended
Sep. 30, 2012
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Effective January 1, 2012, the Company adopted FASB ASU No. 2010-26, which addresses diversity in practice within the insurance industry regarding the interpretation of which costs relating to the acquisition of new or renewal insurance contracts qualify for deferral. This guidance specifies that a cost must be directly related to the successful acquisition of a new or renewal insurance contract in order to be capitalized. The Company elected prospective adoption of ASU No. 2010-26. At December 31, 2011, deferred policy acquisition costs included approximately $43 million of costs that no longer met the criteria for deferral as of January 1, 2012 and will be recognized into income primarily over the first nine months of 2012, consistent with policy terms. Upon adoption of ASU No. 2010-26, the Company's policy is to defer commissions and premium taxes that meet the criteria for deferral under the new guidance. During the quarter ended September 30, 2012, the Company deferred $89.4 million of policy acquisition costs and amortized $96.5 million of policy acquisition costs. Under its previous policy, the Company would have deferred $117.9 million of policy acquisition costs and amortized $117.7 million of policy acquisition costs for the quarter ended September 30, 2012. During the nine months ended September 30, 2012, the Company deferred $289.3 million of policy acquisition costs and amortized $316.8 million of policy acquisition costs. Under its previous policy, the Company would have deferred $374.7 million of policy acquisition costs and amortized $358.0 million of policy acquisition costs for the nine months ended September 30, 2012. Effective January 1, 2012, the Company adopted FASB ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs, which amends FASB ASC 820 to achieve a uniform framework for fair value measurement and disclosures in U.S. GAAP and International Financial Reporting Standards. ASU No. 2011-04 prohibits the grouping of financial instruments for purposes of determining fair value, except when market and credit risks are managed on the basis of the Company's net exposure, and extends the prohibition against the use of block discounts to Level 2 and Level 3 fair value measurements. The guidance also requires expanded disclosures for Level 3 fair value measurements including quantitative information about unobservable inputs, the sensitivity of fair value measurements to a change in unobservable inputs and a description of the Company's valuation processes. Additionally, the guidance requires disclosure of the hierarchy classification for assets and liabilities not measured at fair value, but whose fair value is disclosed. The adoption of this guidance did not have an impact on the Company's financial position, results of operations or cash flows. The Company has included the additional disclosures required by ASU No. 2011-04 in notes 7 and 10. Effective January 1, 2012, the Company adopted FASB ASU No. 2011-05, Comprehensive Income and FASB ASU No. 2011-12, Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05. ASU No. 2011-05 requires comprehensive income to be reported in either a single statement that presents the components of net income, the components of other comprehensive income and total comprehensive income, or in two consecutive statements, and it eliminates the option to report other comprehensive income and its components in the statement of changes in equity. This guidance also requires the presentation of separate line items on the statements of income for reclassification adjustments of items out of accumulated other comprehensive income into net income. ASU No. 2011-12 deferred the requirement to present separate line items on the statements of income and instead requires the presentation of reclassification adjustments within other comprehensive income or in the notes to the consolidated financial statements. The adoption of ASU No. 2011-05 and ASU No. 2011-12 did not have an impact on the Company's financial position, results of operations, cash flows or financial statement presentation.

Recent Accounting Pronouncements

Effective January 1, 2012, the Company adopted FASB ASU No. 2010-26, which addresses diversity in practice within the insurance industry regarding the interpretation of which costs relating to the acquisition of new or renewal insurance contracts qualify for deferral. This guidance specifies that a cost must be directly related to the successful acquisition of a new or renewal insurance contract in order to be capitalized. The Company elected prospective adoption of ASU No. 2010-26. At December 31, 2011, deferred policy acquisition costs included approximately $43 million of costs that no longer met the criteria for deferral as of January 1, 2012 and will be recognized into income primarily over the first nine months of 2012, consistent with policy terms. Upon adoption of ASU No. 2010-26, the Company's policy is to defer commissions and premium taxes that meet the criteria for deferral under the new guidance. During the quarter ended September 30, 2012, the Company deferred $89.4 million of policy acquisition costs and amortized $96.5 million of policy acquisition costs. Under its previous policy, the Company would have deferred $117.9 million of policy acquisition costs and amortized $117.7 million of policy acquisition costs for the quarter ended September 30, 2012. During the nine months ended September 30, 2012, the Company deferred $289.3 million of policy acquisition costs and amortized $316.8 million of policy acquisition costs. Under its previous policy, the Company would have deferred $374.7 million of policy acquisition costs and amortized $358.0 million of policy acquisition costs for the nine months ended September 30, 2012.

Effective January 1, 2012, the Company adopted FASB ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs, which amends FASB ASC 820 to achieve a uniform framework for fair value measurement and disclosures in U.S. GAAP and International Financial Reporting Standards. ASU No. 2011-04 prohibits the grouping of financial instruments for purposes of determining fair value, except when market and credit risks are managed on the basis of the Company's net exposure, and extends the prohibition against the use of block discounts to Level 2 and Level 3 fair value measurements. The guidance also requires expanded disclosures for Level 3 fair value measurements including quantitative information about unobservable inputs, the sensitivity of fair value measurements to a change in unobservable inputs and a description of the Company's valuation processes. Additionally, the guidance requires disclosure of the hierarchy classification for assets and liabilities not measured at fair value, but whose fair value is disclosed. The adoption of this guidance did not have an impact on the Company's financial position, results of operations or cash flows. The Company has included the additional disclosures required by ASU No. 2011-04 in notes 7 and 10.

Effective January 1, 2012, the Company adopted FASB ASU No. 2011-05, Comprehensive Income and FASB ASU No. 2011-12, Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05. ASU No. 2011-05 requires comprehensive income to be reported in either a single statement that presents the components of net income, the components of other comprehensive income and total comprehensive income, or in two consecutive statements, and it eliminates the option to report other comprehensive income and its components in the statement of changes in equity. This guidance also requires the presentation of separate line items on the statements of income for reclassification adjustments of items out of accumulated other comprehensive income into net income. ASU No. 2011-12 deferred the requirement to present separate line items on the statements of income and instead requires the presentation of reclassification adjustments within other comprehensive income or in the notes to the consolidated financial statements. The adoption of ASU No. 2011-05 and ASU No. 2011-12 did not have an impact on the Company's financial position, results of operations, cash flows or financial statement presentation.