Federal Income Taxes	6 Months Ended
Jun. 30, 2011
Notes to Financial Statements [Abstract]
Federal Income Taxes	7. Federal Income Taxes The effective tax rate is a ratio of tax expense over pre-tax income (loss). The effective tax rate was 26% and 27% for the three and six months ended June 30, 2011, respectively. The effective tax rate was 24% and 25% for the three and six months ended June 30, 2010, respectively. The effective tax rate on pre-tax income (loss) from continuing operations was lower than the prevailing corporate federal income tax rate. Differences in the effective rates and the U.S. statutory rate of 35% were the result of certain tax preferred investment income, separate account dividends-received deduction, foreign tax credits and other tax preference items.

Description containing the entire income tax disclosure. Examples include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49

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