CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Cash flows from operating activities
Net Income (Loss) Attributable to Parent	$ 870	$ 716	$ 1,822
Change in operating assets and liabilities:
Accrued investment income	(4)	7	(43)
Premiums receivable and other reinsurance balances	110	(764)	(347)
Deferred policy acquisition costs	(198)	(107)	154
Reinsurance ceded receivable balances	(178)	66	(124)
Future policy benefits, other policy claims and benefits, and other reinsurance balances	1,537	1,593	1,321
Deferred income taxes	211	77	(847)
Other assets and other liabilities, net	113	(163)	242
Amortization of net investment premiums, discounts and other	(55)	(57)	(105)
Depreciation, Depletion and Amortization	49	45	53
Investment related (gains) losses, net	(91)	170	(168)
Other, net	(57)	(2)	24
Net cash provided by operating activities	2,307	1,581	1,982
Cash flows from investing activities
Sales of fixed maturity securities available-for-sale	13,214	9,340	7,309
Principal payments on mortgage loans on real estate	907	627	589
Proceeds from Sale of Available-for-sale Securities, Equity	98	46	207
Proceeds from Sale and Collection of Mortgage Notes Receivable	490	445	340
Proceeds from Collection of Policy Loans	82	57	115
Payments to Acquire Available-for-sale Securities	(15,664)	(9,724)	(8,941)
Payments to Acquire Available-for-sale Securities, Equity	(312)	(13)	(81)
Purchases of fixed maturity securities available-for-sale	(1,216)	(1,019)	(964)
Payments to Fund Policy Loans	(42)	(45)	(45)
Cash invested in funds withheld at interest	(60)	(54)	(23)
Purchase of businesses, net of cash acquired of $27 and $5	4	(32)	0
Payments to Acquire Property, Plant, and Equipment	(34)	(29)	(44)
Change in short-term investments	199	129	52
Change in other invested assets	(304)	(365)	(122)
Net cash used in investing activities	(2,638)	(637)	(1,608)
Cash flows from financing activities
Dividends to stockholders	(163)	(140)	(117)
Repayment of collateral finance and securitization notes	(91)	(96)	(68)
Proceeds from long-term debt issuance	599	0	0
Debt issuance costs	(5)	0	0
Principal payments of long-term debt	(403)	(3)	(303)
Purchases of treasury stock	(101)	(300)	(44)
Exercise of stock options, net	6	3	7
Change in cash collateral for derivative positions and other arrangements	(163)	44	(65)
Deposits on universal life and other investment type policies and contracts	1,309	864	1,018
Withdrawals on universal life and other investment type policies and contracts	(1,109)	(694)	(752)
Net cash used in financing activities	(121)	(322)	(324)
Effect of exchange rate changes on cash	11	(36)	53
Change in cash and cash equivalents	(441)	586	103
Cash and cash equivalents, beginning of period	1,890	1,304	1,201
Cash and cash equivalents, end of period	1,449	1,890	1,304
Supplementary information:
Interest paid	180	170	173
Income taxes paid, net of refunds	44	142	37
Transfer to Investments	6,275	4,636	3,286
Capital Expenditures Incurred but Not yet Paid	1	0	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	8	70	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	$ (12)	$ (38)	$ 0