Guaranteed Benefit Features	9 Months Ended
	Sep. 30, 2021
Guaranteed Benefit Features [Abstract]
Guaranteed Benefit Features	8. Guaranteed Benefit Features Information on the guaranteed death benefit (“GDB”) features outstanding (dollars in millions) was as follows: As ofAs of September 30,December 31, 2021 (1) 2020 (1) Return of Net Deposits Total account value $ 114,058 $ 109,856 Net amount at risk (2) 96 72 Average attained age of contract holders 66 years 66 years Minimum Return Total account value $ 98 $ 100 Net amount at risk (2) 12 12 Average attained age of contract holders 79 years 78 years Guaranteed minimum return 5% 5% Anniversary Contract Value Total account value $ 28,067 $ 27,650 Net amount at risk (2) 511 390 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 Nine Months Ended September 30, 2021 2020 Balance as of beginning-of-year$ 121 $ 117 Changes in reserves 31 46 Benefits paid (16) (21) Balance as of end-of-period$ 136 $ 142 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 ofAs of September 30,December 31, 2021 2020 Asset Type Domestic equity $ 73,503 $ 70,362 International equity 21,041 20,855 Fixed income 44,627 43,521 Total $ 139,171 $ 134,738 Percent of total variable annuity separate account values 98% 98% 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 38% of total life insurance in-force reserves as of September 30, 2021, and December 31, 2020. UL and VUL products with secondary guarantees represented 17% and 15% of total life insurance sales for the three and nine months ended September 30, 2021, respectively, compared to 32% for the corresponding periods in 2020.