Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Securities held to maturity, at amortized cost:
Fixed maturities		$ 33,459	$ 34,242
Other investments		294	171
Cash and cash equivalents		4,350	4,658
Total investments and cash		105,897	107,341
Receivables		705	842
Accrued investment income		768	762
Deferred policy acquisition costs		8,511	8,273
Property and equipment, at cost less accumulated depreciation		427	429
Other	[1]	1,988	2,120
Total assets		118,296	119,767
Policy liabilities:
Future policy benefits		69,687	65,646
Unpaid policy claims		3,802	3,630
Unearned premiums		7,857	8,626
Other policyholders' funds		6,285	6,031
Total policy liabilities		87,631	83,933
Income taxes		4,340	5,293
Payables for return of cash collateral on loaned securities		941	2,193
Notes payable		5,011	5,282
Other	[2]	$ 2,665	$ 4,719
Commitments and contingent liabilities (Note 14)
Total liabilities		$ 100,588	$ 101,420
Shareholders' equity:
Common stock of $.10 par value. In thousands: authorized 1,900,000 shares in 2015 and 2014; issued 669,723 shares in 2015 and 668,132 shares in 2014		67	67
Additional paid-in capital		1,828	1,711
Retained earnings		24,007	22,156
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains (losses)		(2,196)	(2,541)
Unrealized gains (losses) on investment securities		2,986	4,672
Unrealized gains (losses) on derivatives		(26)	(26)
Pension liability adjustment		(139)	(126)
Treasury stock, at average cost		(8,819)	(7,566)
Total shareholders' equity		17,708	18,347
Total liabilities and shareholders' equity		118,296	119,767
Investments Other Than Consolidated Variable Interest Entities
Securities available for sale, at fair value:
Fixed maturities		60,795	61,407
Perpetual securities		1,719	2,240
Equity securities		135	28
Securities held to maturity, at amortized cost:
Fixed maturities		33,459	34,159
Variable Interest Entity, Consolidated
Securities available for sale, at fair value:
Fixed maturities		4,554	4,166
Perpetual securities		228	429
Equity securities		363	0
Securities held to maturity, at amortized cost:
Fixed maturities		$ 0	$ 83

[1] Includes $102 in 2015 and $106 in 2014 of derivatives from consolidated variable interest entities

[2] Includes $293 in 2015 and $318 in 2014 of derivatives from consolidated variable interest entities