Statutory Net Income and Surplus and Dividend Restrictions (Details) - USD ($) $ in Millions						12 Months Ended
	Dec. 21, 2016	Dec. 22, 2015	Jun. 29, 2015	Dec. 19, 2014	Jun. 27, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statutory Net Income And Surplus And Dividend Restrictions [Abstract]
Statutory net income						$ (2,018)	$ 340	$ 393
Statutory surplus balance						5,718	$ 482
Distribution to parent	$ 1,140	$ 180	$ 270	$ 75	$ 267
Net Gains from Operations						$ (159)