Consolidated Balance Sheets - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Securities held to maturity, at amortized cost:
Fixed maturities		$ 34,401	$ 33,350
Other Investments	[1]	1,701	1,450
Cash and cash equivalents		4,205	4,859
Total investments and cash		120,503	116,361
Receivables		618	669
Accrued investment income		723	754
Deferred policy acquisition costs		9,255	8,993
Property and equipment, at cost less accumulated depreciation		444	433
Other	[2]	2,107	2,609
Total assets		133,650	129,819
Insurance Loss Reserves [Abstract]
Future policy benefits		79,624	76,106
Unpaid policy claims		4,230	4,045
Unearned premiums		6,825	6,916
Other policyholders’ funds		6,945	6,659
Total policy liabilities		97,624	93,726
Income Taxes		5,626	5,387
Payables for return of cash collateral on loaned securities		1,482	526
Notes payable		5,250	5,360
Other	[3]	3,328	4,338
Total liabilities		113,310	109,337
Shareholders’ equity:
Common stock of $.10 par value. In thousands: authorized 1,900,000 shares in 2017 and 2016; issued 671,683 shares in 2017 and 671,249 shares in 2016		67	67
Additional paid-in capital		2,008	1,976
Retained earnings		26,400	25,981
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains (losses)		(1,650)	(1,983)
Unrealized gain (losses) on investment securities		4,474	4,805
Unrealized gains (losses) on derivatives		(22)	(24)
Pension liability adjustment		(170)	(168)
Treasury stock, at average cost		(10,767)	(10,172)
Total shareholders’ equity		20,340	20,482
Total liabilities and shareholders’ equity		133,650	129,819
Investments Other Than Consolidated Variable Interest Entities
Securities available for sale, at fair value:
Fixed maturities		72,113	68,778
Perpetual securities		1,555	1,425
Equity securities		271	265
Securities held to maturity, at amortized cost:
Fixed maturities		34,401	33,350
Variable Interest Entity, Consolidated
Securities available for sale, at fair value:
Fixed maturities		4,964	4,982
Perpetual securities		215	208
Equity securities		$ 1,078	$ 1,044

[1] Includes $926 in 2017 and $819 in 2016 of loan receivables from consolidated variable interest entities

[2] Includes $146 in 2017 and $127 in 2016 of derivatives from consolidated variable interest entities

[3] Includes $125 in 2017 and $146 in 2016 of derivatives from consolidated variable interest entities