Guaranteed Benefit Features	12 Months Ended
	Dec. 31, 2021
Guaranteed Benefit Features [Abstract]
Guaranteed Benefit Features	10. Guaranteed Benefit Features The GDB features include those where we contractually guarantee to the contract holder either: return of no less than total deposits made to the contract less any partial withdrawals (“return of net deposits”); total deposits made to the contract less any partial withdrawals plus a minimum return (“minimum return”); or the highest contract value on any contract anniversary date through age 80. The highest contract value is increased by purchase payments and is decreased by withdrawals subsequent to that anniversary date in the same proportion that withdrawals reduce the contract value. Information on the GDB features outstanding (dollars in millions) was as follows: As of December 31, 2021 (1) 2020 (1) Return of Net Deposits Total account value$ 117,503 $ 109,856 Net amount at risk (2) 84 72 Average attained age of contract holders 67 years 66 years Minimum Return Total account value$ 102 $ 100 Net amount at risk (2) 11 12 Average attained age of contract holders 79 years 78 years Guaranteed minimum return 5% 5% Anniversary Contract Value Total account value$ 28,788 $ 27,650 Net amount at risk (2) 400 390 Average attained age of contract holders 73 years 72 years (1)Our variable contracts with guarantees may offer more than one type of guarantee in each contract; therefore, the amounts listed are not mutually exclusive.(2)Represents the amount of death benefit in excess of the account balance that is subject to market fluctuations. The determination of GDB liabilities is based on models that involve a range of scenarios and assumptions, including those regarding expected market rates of return and volatility, contract surrender rates and mortality experience. The following summarizes the balances of and changes in the liabilities for GDBs (in millions), which were recorded in future contract benefits on our Consolidated Balance Sheets: For the Years Ended December 31, 2021 2020 2019 Balance as of beginning-of-year$ 121 $ 117 $ 161 Changes in reserves 31 30 (24) Benefits paid (20) (26) (20) Balance as of end-of-year$ 132 $ 121 $ 117 Variable Annuity Contracts Account balances of variable annuity contracts, including those with guarantees, (in millions) were invested in separate account investment options as follows: As of December 31, 2021 2020 Asset Type Domestic equity$ 77,290 $ 70,362 International equity 21,223 20,855 Fixed income 45,231 43,521 Total$ 143,744 $ 134,738 Secondary Guarantee Products Future contract benefits and other contract holder funds include reserves for our secondary guarantee products sold through our Life Insurance segment. Reserves on UL and VUL products with secondary guarantees represented 39% and 38% of total life insurance in-force reserves as of December 31, 2021 and 2020, respectively.