Income Taxes	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	On December 22, 2017, comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the Tax Act) was enacted by the U.S. government. The Tax Act is generally effective January 1, 2018, and among other changes, reduced the federal corporate income tax rate from 35% to 21%, eliminated the corporate Alternative Minimum Tax, modified numerous insurance-specific provisions, and further limited deductions for executive compensation. The Tax Act reduced the Company’s effective tax rate by 9.5% for the period ended March 31, 2018. The Company recorded provisional amounts in its December 31, 2017 and March 31, 2018 Consolidated Financial Statements related to partnership investments and discounted loss reserves. Reasonable estimates of the tax impacts of these provisional items were reflected in the Company’s results of operations; however, as of March 31, 2018, the Company has not yet completed its accounting for these provisional items. For partnership investments, the Company is waiting to receive schedules K-1, and for discounted loss reserves, the Company is waiting on guidance from the U.S. Treasury. Adjustments to the provisional amounts will impact the Company’s consolidated results of operations and must be reflected no later than in the Company’s December 31, 2018 Consolidated Financial Statements.

Income Taxes

3 Months Ended

Mar. 31, 2018

On December 22, 2017, comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the Tax Act) was enacted by the U.S. government. The Tax Act is generally effective January 1, 2018, and among other changes, reduced the federal corporate income tax rate from 35% to 21%, eliminated the corporate Alternative Minimum Tax, modified numerous insurance-specific provisions, and further limited deductions for executive compensation. The Tax Act reduced the Company’s effective tax rate by 9.5% for the period ended March 31, 2018. The Company recorded provisional amounts in its December 31, 2017 and March 31, 2018 Consolidated Financial Statements related to partnership investments and discounted loss reserves. Reasonable estimates of the tax impacts of these provisional items were reflected in the Company’s results of operations; however, as of March 31, 2018, the Company has not yet completed its accounting for these provisional items. For partnership investments, the Company is waiting to receive schedules K-1, and for discounted loss reserves, the Company is waiting on guidance from the U.S. Treasury. Adjustments to the provisional amounts will impact the Company’s consolidated results of operations and must be reflected no later than in the Company’s December 31, 2018 Consolidated Financial Statements.