Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Investments:
Fixed maturity securities available-for-sale, at estimated fair value (amortized cost: $58,460 and $58,599, respectively)	$ 61,560	$ 63,333
Equity securities, at estimated fair value (cost: $142 and $142, respectively)	160	161
Mortgage loans (net of valuation allowances of $49 and $46, respectively; includes $105 and $115, respectively, at estimated fair value, relating to variable interest entities)	11,206	10,640
Policy loans	1,107	1,106
Real estate joint ventures	441	433
Other limited partnership interests	1,698	1,667
Short-term investments, principally at estimated fair value	215	269
Other invested assets, principally at estimated fair value	2,468	2,519
Total investments	78,855	80,128
Cash and cash equivalents, principally at estimated fair value	1,411	1,363
Accrued investment income (includes $1 and $1, respectively, relating to variable interest entities)	614	575
Premiums, reinsurance and other receivables	12,990	12,918
Deferred policy acquisition costs and value of business acquired	5,457	5,623
Current income tax recoverable	821	735
Other assets	549	547
Separate account assets	106,529	110,156
Total assets	207,226	212,045
Liabilities
Future policy benefits	35,327	35,715
Policyholder account balances	37,186	37,069
Other Policyholder Funds	2,730	2,720
Payables for collateral under securities loaned and other transactions	4,238	4,158
Long-term debt (includes $8 and $11, respectively, at estimated fair value, relating to variable interest entities)	43	46
Deferred Tax Liabilities, Net	749	894
Other Liabilities	4,361	4,419
Separate account liabilities	106,529	110,156
Total liabilities	191,163	195,177
Contingencies, Commitments and Guarantees (Note 11)
Equity
Common stock, par value $25,000 per share; 4,000 shares authorized; 3,000 shares issued and outstanding	75	75
Additional paid-in capital	19,073	19,073
Retained earnings (deficit)	(4,099)	(4,132)
Accumulated other comprehensive income (loss)	999	1,837
Total equity	16,048	16,853
Stockholders' Equity Attributable to Noncontrolling Interest	15	15
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	16,063	16,868
Total liabilities and equity	$ 207,226	$ 212,045