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VARIABLE LIFE AND ANNUITY CONTRACTS (Tables)
12 Months Ended
Dec. 31, 2017
VARIABLE LIFE AND ANNUITY CONTRACTS  
Schedule of Account balances of variable annuity contracts with guarantees were invested in separate account investment
At December 31,
(in millions)20172016
Equity funds$48,594$42,266
Bond funds7,7937,798
Balanced funds27,65625,365
Money market funds730840
Total$84,773$76,269
Schedule of details concerning entity's GMDB exposures, by benefit type
At December 31,20172016
Net Deposits Net Deposits
Plus a MinimumHighest ContractPlus a MinimumHighest Contract
(dollars in billions)ReturnValue AttainedReturnValue Attained
Account value$99$17$91$16
Net amount at risk1-11
Average attained age of contract holders by product63686368
Range of guaranteed minimum return rates0%-4.5%0%-4.5%
Schedule of changes in GMDB liabilities for guarantees on variable contracts reflected in the general account
Years Ended December 31,
(in millions)201720162015
Balance, beginning of year$402$491$420
Reserve increase (decrease)(14)(32)127
Benefits paid(42)(57)(56)
Changes in reserves related to unrealized appreciation of investments6--
Balance, end of year$352$402$491