Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Available-for-sale securities, at fair value:
Fixed maturity securities (amortized cost: 2017 – $86,993; 2016 – $84,287)	$ 94,840	$ 89,013
Variable interest entities’ fixed maturity securities (amortized cost: 2017 – $0; 2016 – $200)		200
Equity securities (cost: 2017 – $247; 2016 – $260)	246	275
Trading securities	1,620	1,712
Mortgage loans on real estate	10,762	9,889
Real estate	11	24
Policy loans	2,399	2,451
Derivative investments	915	927
Other investments	2,296	2,230
Total investments	113,089	106,721
Cash and invested cash	1,628	2,722
Deferred acquisition costs and value of business acquired	8,403	9,134
Premiums and fees receivable	396	430
Accrued investment income	1,078	1,062
Reinsurance recoverables	4,907	5,265
Funds withheld reinsurance assets	593	617
Goodwill	1,368	2,273
Other assets	6,082	5,006
Separate account assets	144,219	128,397
Total assets	281,763	261,627
Liabilities
Future contract benefits	22,887	21,576
Other contract holder funds	80,209	78,903
Short-term debt	450
Long-term debt	4,894	5,345
Reinsurance related embedded derivatives	57	53
Funds withheld reinsurance liabilities	1,761	1,976
Deferred gain on business sold through reinsurance	1	24
Payables for collateral on investments	4,417	4,995
Other liabilities	5,546	5,880
Separate account liabilities	144,219	128,397
Total liabilities	264,441	247,149
Contingencies and Commitments (See Note 13)
Stockholders' Equity
Preferred stock - 10,000,000 shares authorized
Common stock - 800,000,000 shares authorized; 218,090,114 and 226,335,105 shares issued and outstanding as of December 31, 2017, and December 31, 2016, respectively	5,693	5,869
Retained earnings	8,399	7,043
Accumulated other comprehensive income (loss)	3,230	1,566
Total stockholders' equity	17,322	14,478
Total liabilities and stockholders' equity	$ 281,763	$ 261,627