v3.8.0.1
Closed Block (Closed Block Liabilities and Assets Designated to Closed Block; Maximum Future Earnings to be Recognized) (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Closed Block liabilities      
Future policy benefits $ 48,870 $ 49,281  
Policyholders’ dividends payable 829 932  
Policyholders’ dividend obligation 5,446 4,658 $ 4,509
Policyholders’ account balances 5,146 5,204  
Other Closed Block liabilities 5,070 4,262  
Total Closed Block liabilities 65,361 64,337  
Closed Block assets      
Fixed maturities, available-for-sale, at fair value 41,043 38,696  
Other trading account assets, at fair value 339 283  
Equity securities, available-for-sale, at fair value 2,340 2,572  
Commercial mortgage and other loans 9,017 9,437  
Policy loans 4,543 4,660  
Other long-term investments 3,159 3,020  
Short-term investments 632 837  
Total investments 61,073 59,505  
Cash and cash equivalents 789 1,310  
Accrued investment income 474 491  
Other Closed Block assets 249 206  
Total Closed Block assets 62,585 61,512  
Excess of reported Closed Block liabilities over Closed Block assets 2,776 2,825  
Portion of above representing accumulated other comprehensive income:      
Net unrealized investment gains (losses) 3,627 2,990  
Allocated to policyholder dividend obligation (3,656) (3,011)  
Future earnings to be recognized from Closed Block assets and Closed Block liabilities $ 2,747 $ 2,804