Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Net cash provided by operating activities	$ 628	$ 428
Proceeds from the sale, maturity, disposal or redemption of:
Fixed maturities	2,318	2,277
Equity securities	0	0
Mortgage loans on real estate	309	257
Limited partnerships/corporations	27	37
Acquisition of:
Fixed maturities	(3,067)	(1,898)
Equity securities	(3)	(2)
Mortgage loans on real estate	(402)	(850)
Limited partnerships/corporations	(165)	(65)
Derivatives, net	(22)	169
Policy loans, net	2	5
Short-term investments, net	24	29
Short-term loan to affiliate, net	80	0
Collateral received (delivered), net	40	(161)
Other investments, net	(39)	0
Net cash used in investing activities	(898)	(202)
Cash Flows from Financing Activities:
Deposits received for investment contracts	1,838	1,249
Maturities and withdrawals from investment contracts	(1,511)	(1,316)
Settlements on deposit contracts	(19)	(33)
Dividends paid and distributions of capital	(126)	(261)
Net cash provided by (used in) financing activities	182	(361)
Net decrease in cash and cash equivalents	(88)	(135)
Cash and cash equivalents, beginning of period	288	561
Cash and cash equivalents, end of period	$ 200	$ 426