Income Taxes	9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We record income tax expense during interim periods based on our best estimate of the full year’s tax rate as adjusted for discrete items, if any, that are taken into account in the relevant interim period. Each quarter, we update our estimate of the annual effective tax rate and any change in the estimated rate is recorded on a cumulative basis. Our tax rate on income from continuing operations was 21.0% and 15.3% for the three and nine months ended September 30, 2017, respectively, compared to 38.3% and 37.3% for the three and nine months ended September 30, 2016, respectively. The Company’s tax rate for the three and nine months ended September 30, 2017 was lower than the statutory federal income tax rate of 35% primarily due to the non-taxable nature of the BFDS exchange transaction, the adoption of new tax guidance issued for tax benefits on employee share-based transactions, benefits realized from the settlement of uncertain tax positions, and a change in the proportional mix of domestic and international income. The Company’s tax rate for the three and nine months ended September 30, 2016 was higher than the statutory federal income tax rate of 35% primarily due to state income taxes and transaction related taxes, partially offset by dividends received deductions and a change in the proportional mix of domestic and international income. Our estimated annual effective full year 2017 tax rate will vary from the statutory federal rate primarily as a result of variances among the estimates and actual amounts of full year sources of taxable income (e.g., domestic consolidated, joint venture and/or international), the realization of tax credits (e.g., research and experimentation, foreign tax and state incentive), adjustments which may arise from the resolution of tax matters under review and our assessment of our liability for uncertain tax positions.

Income Taxes

9 Months Ended

Sep. 30, 2017

We record income tax expense during interim periods based on our best estimate of the full year’s tax rate as adjusted for discrete items, if any, that are taken into account in the relevant interim period. Each quarter, we update our estimate of the annual effective tax rate and any change in the estimated rate is recorded on a cumulative basis. Our tax rate on income from continuing operations was 21.0% and 15.3% for the three and nine months ended September 30, 2017, respectively, compared to 38.3% and 37.3% for the three and nine months ended September 30, 2016, respectively. The Company’s tax rate for the three and nine months ended September 30, 2017 was lower than the statutory federal income tax rate of 35% primarily due to the non-taxable nature of the BFDS exchange transaction, the adoption of new tax guidance issued for tax benefits on employee share-based transactions, benefits realized from the settlement of uncertain tax positions, and a change in the proportional mix of domestic and international income. The Company’s tax rate for the three and nine months ended September 30, 2016 was higher than the statutory federal income tax rate of 35% primarily due to state income taxes and transaction related taxes, partially offset by dividends received deductions and a change in the proportional mix of domestic and international income.

Our estimated annual effective full year 2017 tax rate will vary from the statutory federal rate primarily as a result of variances among the estimates and actual amounts of full year sources of taxable income (e.g., domestic consolidated, joint venture and/or international), the realization of tax credits (e.g., research and experimentation, foreign tax and state incentive), adjustments which may arise from the resolution of tax matters under review and our assessment of our liability for uncertain tax positions.