Basis of Presentation and Accounting Policies Level 4 (Details)	3 Months Ended
	Mar. 31, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reinsurance Recoverable, Unsecured	$ 1,200,000,000
Reinsurer Concentration Risk [Member] | Stockholders' Equity, Total [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration Risk, Percentage	0.00%
Dividend Paid [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash Dividends Paid to Parent Company	$ 300,000,000
Dividend to Parent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Dividends	300,000,000
Individual Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reinsurance Recoverable, Unsecured	$ 0.16