Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Investments:
Available-for-sale Securities, Debt Securities	$ 57,834	$ 56,003
Fixed Maturities at Fair Value Using Fair Value Option Variable Interest Entity Assets	146	293
Equity securities, trading, at fair value (cost of $30,454 and $32,928)	11	11
Available-for-sale Securities, Equity Securities	1,055	1,097
Mortgage loans (net of allowances for loan losses of $83 and $102)	5,796	5,697
Policy loans, at outstanding balance	1,433	1,444
Alternative Investments, Fair Value Disclosure	2,445	2,456
Other investments	355	403
Short-term investments (includes variable interest entity assets, at fair value, of $1 as of September 30, 2012)	4,716	3,244
Cash	362	882
Total investments	73,780	70,637
Premiums receivable and agents' balances, net	3,846	3,731
Reinsurance recoverables, net	23,265	23,311
Deferred policy acquisition costs and present value of future profits	1,648	1,711
Deferred Tax Assets, Net	2,868	3,281
Goodwill	567	567
Disposal Group, Including Discontinued Operation, Assets, Current	0	870
Property and equipment, net	974	991
Other assets	1,807	1,786
Separate account assets	116,746	115,665
Total assets	225,863	223,432
Liabilities
Liability for Claims and Claims Adjustment Expense	27,839	27,605
Liability for Future Policy Benefits	14,156	13,929
Other Policyholder Funds	30,466	31,176
Unearned premiums	5,573	5,499
Short-term Debt	320	416
Long-term Debt, Excluding Current Maturities	4,817	4,636
Other liabilities (includes variable interest entity liabilities)	8,658	6,992
Disposal Group, Including Discontinued Operation, Liabilities, Current	0	611
Separate Accounts, Liability	116,746	115,665
Total liabilities	208,575	206,529
Stockholders' Equity
Common stock, $0.01 par value - 1,500,000,000 shares authorized	4	4
Additional paid-in capital	5,195	5,247
Retained earnings	13,282	13,114
Treasury stock, at cost	(1,687)	(1,125)
Accumulated other comprehensive income, net of tax	494	(337)
Total stockholders' equity	17,288	16,903
Total liabilities and stockholders' equity	225,863	223,432
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity
Accumulated other comprehensive income, net of tax	$ 494	$ (337)