Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Investments:
Fixed maturities, at fair value (amortized cost, $21,867; $19,942)	$ 23,138	$ 20,961
Equity securities, at fair value (cost, $589; $583)	588	583
Commercial Mortgage Loans	1,761	1,666
Policy loans	1,415	1,452
Other long-term investments	1,518	1,462
Short-term investments	199	691
Total investments	28,619	26,815
Cash and cash equivalents	2,972	3,185
Premiums, accounts and notes receivable, net	3,380	3,077
Reinsurance recoverables	6,046	6,478
Deferred policy acquisition costs	2,237	1,818
Property and equipment	1,563	1,536
Deferred tax assets, net	33	304
Goodwill	6,164	5,980
Other assets, including other intangibles	2,316	2,227
Separate account assets	8,423	7,940
Total assets	61,753	59,360
Liabilities:
Contractholder deposit funds	8,196	8,458
Future policy benefits	10,040	9,648
Unpaid claims and claim expenses	5,168	4,917
Global Health Care medical costs payable	2,719	2,532
Unearned premiums	724	634
Total insurance and contractholder liabilities	26,847	26,189
Accounts payable, accrued expenses and other liabilities	7,260	6,414
Short-term debt	240	276
Long-term debt	5,199	4,756
Separate account liabilities	8,423	7,940
Total liabilities	47,969	45,575
Contingencies - Note 21
Redeemable noncontrolling interests	49	58
Shareholders' Equity
Common stock (par value per share, $0.25; shares issued, 296; authorized, 600)	74	74
Additional paid-in capital	2,940	2,892
Accumulated other comprehensive (loss)	(1,082)	(1,382)
Retained earnings	15,824	13,855
Less: treasury stock, at cost	(4,021)	(1,716)
Total shareholders' equity	13,735	13,723
Noncontrolling interests	0	4
Total equity	13,735	13,727
Total liabilities and equity	$ 61,753	$ 59,360
Shareholders' Equity Per Share	$ 56.3	$ 53.42